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Volume 22 No. 3 Fall 1999Carolina Sun
Special Issue Published by North Carolina Solar Energy Association
Platinum:
Gold:
Silver:
Energy Division ofN.C. Dept. of CommerceDuke SolarInnovative DesignWood Wise Design & Remodeling
Organized by N.C. Solar EnergyAssociation in partnership withN.C. Solar Center
TriangleTourof SolarHomes
Alicia Ravetto, AIA - ArchitectBeaver BrothersBrown & Jones ArchitectsCarolina Country Buildersof Chatham CountyEnvironmental Quality ControlFrank Cole Building Co.Giles Blunden ArchitectHeartwood Realty
New Morning Solar RealtyRaleigh Specialty ProductsRestoration WoodworksSolar ConsultantsSolar Village InstituteSundog BuildersUncommon PropertiesWeaver Street Realty
TriangleTourof SolarHomes
NORTH CAROLINA SOLARENERGY ASSOCIATION2501 Blue Ridge Road, Suite 150Raleigh, NC 27607Tel. (919) 832-7601Fax. (919) 863-4101E-Mail: [email protected]://www.mindspring.com/~ncsea
1999 Board of Directors
Chair: Richard HarkraderNew Morning Solar Realty
Vice Chair/Chair-Elect: Hank WallWood Wise Design & Remodeling
Secretary: Parie HinesBrown and Jones, Architects
Treasurer: Wayne JonesBrown and Jones, Architects
Director, NC Solar Center: Larry Shirley
Joyce BrownChapel Hill Town Council
Van CrandallPioneer Electronics
Arnie KatzAdvanced Energy Corp.
Chris LarsenNC Solar Center
Bob LekerNC Energy Division
Sherri Zann RosenthalEno Commons
Scott SuddrethRock Castle Solar
Lisa WilsonDesign Collaboration
Tom WillsSolar Consultants
Jon ZubizarettaInnovative Design
Executive Director: Susan Luster
Administrative Services: Your Office USA
CAROLINA SUNis a publication of the NCSolar Energy Association (NCSEA), a privatenonprofit organization founded in 1978 tocommunicate with solar enthusiasts and solarbuilding professionals in North Carolina.NCSEA carries out many of its activities incooperation with the NC Solar Center, andencourages the public to contact the SolarCenter (1-800-33-NC SUN) for solar informa-tion. (The NC Solar Center is sponsored bythe Energy Division of the NC Departmentof Commerce in cooperation with NC StateUniversity.)
Managing Editor: Susan LusterEditorial Board: Chris Larsen, Tom Mincarelli,
Fred Stewart, Scott SuddrethDesktop composition: Klaus Holder
CAROLINA SUN accepts unsolicitedmanuscripts, artwork, and photographs.All materials are subject to editing.
Times solar homes are open on tour day:10:00 a.m. - 4:00 p.m.14. NCSU Solar House, Raleigh passive solar, active solar, solar electric
10:00 a.m. - 2:00 p.m.Carrboro: Arcadia8. Curtis/Granda passive solar, active solar9. Blunden/Blakeley passive solar, active solar, solar electric10. Stein passive solar11. Common House passive solar
Hillsborough12. Weber sun-tempered
Efland13. Rivera/Wasnak passive solar, active solar
Holly Springs/Fuquay-Varina Area16. McDermott active solar, solar electric
12:00 - 4:00 p.m.Durham1. Maguire passive solar
Solterra2. Horstman passive solar3. Krassner passive solar4. Jacobs/Meredith sun-tempered5. Wade sun-tempered
Chapel Hill6. Broadwell/Darnell passive solar7. Hudepohl/Khalsa passive solar, active solar, solar electric
Lake Wheeler Area17. Argentati passive solar18. Jaramillo passive solar19. Pfeiffer sun-tempered
Thanks to Weaver Street Market forproviding coffee the day of the tour.
New! North Carolina RenewableEnergy Tax CreditsEffective January 1, 2000New income tax credits for 35% of cost of systems whenpaid for after January 1, 2000 with a dollar limit as listedbelow:
ResidentialSolar hot water systems $ 1,400Passive solar (not sun-tempered)and active solar space heating $ 3,500Photovoltaics, wind, small hydro $10,500
CommercialAll technologies $250,000
Call the NC Solar Center for more information,and for information on existing solar tax credits.1-800-33-NC SUN.
RECYCLEDPAPER
BECAUSE WHAT YOUPRINT ON
IS AS IMPORTANTAS WHAT YOU SAY
Grass Roots Press, Inc.401 1/2 W. Peace Street
Raleigh, North Carolina 27603(919) 828-2364
Offset Printing
WE NOW HAVE 100%POST CONSUMER WASTE
RECYCLED PAPER!
2 CAROLINA SUN Fall 1999
NCSEA MembershipCategories
Individual: $30Professional: $50Corporate: $95Sustaining: $250Student: $15ASES: $55(Special Rate for NCSEAmembers; includesSolar Todaymagazine)
Contribution: $ __________Life Membership: $1000New MemberRenewal
The North Carolina Solar Energy Association and the American SolarEnergy Society (its parent organization) rely on people like you for supportof solar activities. Join now! Sign up a business associate, a client, a friend.
Name: _______________________________________________________________
Company ____________________________________________________________
Address: _____________________________________________________________
City/State/Zip: _______________________________________________________
Telephone: (__________) ______________________________________________
E-Mail ______________________________________________________________
Sponsors of Triangle Tour of Solar HomesPlatinum
Energy Division of N.C. Department of Commerce
GoldDuke Solar
Innovative DesignWood Wise Design & Remodeling
SilverAlicia Ravetto, AIA - Architect
Beaver BrothersBrown & Jones Architects
Carolina Country Builders of Chatham CountyEnvironmental Quality Control
Frank Cole Building Co.Giles Blunden Architect
Heartwood RealtyNew Morning Solar RealtyRaleigh Specialty Products
Restoration WoodworksSolar Consultants
Solar Village InstituteSundog Builders
Uncommon PropertiesWeaver Street Realty
Sponsors of National Tour of Solar Homes
American Solar Energy Society
U.S. Department of Energy
BP Solarex
AstroPower
Interstate Renewable Energy Council
Home Power Magazine
Utility Photovoltaic Group
Innovative Design
NCSEA
Thanksyou!
NCSEA
Thanksyou!
Fall 1999 CAROLINA SUN 3
THANK YOU NCSEA fororganizing the TriangleTour of Solar Homes 1999
Richard & Lonna HarkraderTel. 919-489-1656
NEW MORNINGSOLAR REALTY
✹ ✹ ✹ ✹ ✹ ✹ ✹ ✹ ✹ ✹ ✹ ✹ ✹ ✹ ✹ ✹ ✹ ✹ ✹
New Morning Solar Realty offersthe best in solar living with energyefficient, passive solar apartments(some with active solar hot water)located in SW Durham near DukeUniversity and in Chatham Countynear UNC. Currently looking fortenants.
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Carolina Country Buildersof Chatham County, Inc.
Solar DesignConstruction
ConsultingTraining
Promoting Solar andEnvironmentally Attuned Construction
New Homes / AdditionsIn a Variety of Housing Styles, and Prices.
Paul Konove
1459 Redbud Road • Pittsboro, N.C. 27312 • 919-542-5361
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400 South Tryon StreetCharlotte, NC 28201ph: 704-382-8795 fax: [email protected]
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4 CAROLINA SUN Fall 1999
Durham
Maguire Residence (open 12-4pm) 1Passive Solar
Designer Paul Konove and Lynn Maguire
Builder Carolina Country Builders of Chatham County
Style Traditional
Year Built Completed May 1999
Size 1730 sq.ft.
Cost $172,000.00
Utility costs N/A
Features The Maguire residence is a 1730 sq.ft. 3 bed-room home, located on a wooded site. Mostof the trees to the south of the residence weretaken down to provide solar access. Southfacing window area is over 10% of the floorarea. The east, west, and north windows aredouble low-E, while the south windows havea single coat of low E on the third surface.All south facing windows have appropriateshading. Thermal mass is placed in 4 distinctlocations on the main floor. The wallseparating the main bedroom from the diningarea is a north/south oriented block wall,surfaced with stucco. There is a smallervertical mass wall located behind the woodstove in the main room. The third location ofthermal mass is a strip of colored concretefloor running along the south side of theresidence. The last of the thermal mass is acolored concrete floor located at the home’smain entry. The balance of the main livingarea of the first floor has white oak flooring.The east, west and north walls of the homewere constructed with 2x6 framing whichallows for an R-19 insulation value. The southwall was constructed from 2x4’s. Ceilinginsulation was installed to a value of R-38.The upstairs has a quieter than normal wholehouse fan with mechanically insulatedoperable doors. The bathrooms have lowsone Panasonic fan-lights for ventilation.Air tight cans were used in appropriatelocations. The home’s heating utilizes LP gasand hot water distributed through sealedducts by means of an Aquatherm air handler.
Environmental Federationof North Carolina
Support the
Help keep North Carolina healthy and green.Look for us in your workplace campaign.
EFNC, PO Box 196, Durham, NC 27702919-687-4840, 800-200-6311
NCSEA is a charter member of EFNC.
CALL US TOLL FREE Calls Originating Outside NC:Calls Originating in NC:
P.O. Box 2855Durham, North Carolina 27705
Custom MatchC SO OL R
Vice PresidentMEL HERRING
1-800-334-16351-800-422-6502
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Fall 1999 CAROLINA SUN 5
Solterra
Horstman Residence (open 12-4pm) 2Passive Solar
Designer Keith Bartholomew, Owner, and Bruce Weber
Builder Owner and Keith Bartholomew
Style Contemporary
Year Built 1998
Size 1815 sq.ft.
Cost $115/sq.ft.
Utility Costs $85 per month average
Features Insulated Poly-Steel concrete form walls witha stucco finish. Concrete floor on main level.Colored concrete on southern end of house,hardwood floors on the north. Low-Ewindows. Screen porch with glass panels forwinter use. Stamped and colored concreteslab in screen porch. 155 sq.ft. South facingglass.
Krassner Residence (open 12-4pm) 3Passive Solar
Architect/Designer Giles Blunden Architect
Builder Frank Cole Building Co.
Style Contemporary - Country
Year Built 1999
Size 1940 sq.ft.
Cost $105 per sq.ft.
Utility Costs N/A
Features Low-E windows. East and west porches.340 sq.ft. brick flooring on first floor for solarmass. 140 sq.ft. south facing glass. Gas heatpump, engineered HVAC system, sealedcrawlspace, standard insulation levels withradiant barriers. Native cypress siding and 2foot overhangs.
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6 CAROLINA SUN Fall 1999
Jacobs/Meredith Residence (open 12-4pm) 4Sun-Tempered
Designer Owner in collaboration with JimCameron, Kathleen Jardine and Al Crabtree
Builder Byron Papa
Style Vernacular Farmhouse
Year Built 1999
Size 3200 sq.ft.
Cost Owner states it cost no more than aconventional home.
Utility Costs N/A
Features Andersen low-E windows. Northern low-Eused on south elevation. Advanced DrywallApproach finished wall installation. Highinsulation levels with blown cellulose. R-19walls and R-38 ceilings. 234 sq.ft. south facingglass. High efficiency gas furnace and heatpump. No mass for heat storage. Screenporches upstairs and down.
Wade Residence (open 12-4pm) 5Sun-Tempered
Architect Robert Sotolongo
Builder David Roberts
Style Contemporary
Year Built 1999
Size 1830 sq.ft.
Cost $100 / sq.ft.
Utility Costs N/A
Features Open air design. East carport and northernscreen porch. Limited east and west glass.Whole house fan. Tile and hardwood floors.130 sq ft southern glass.
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Fall 1999 CAROLINA SUN 7
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Marcoplos Construction
Custom Building & Remodeling
Mark Marcoplos 919-968-0056
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Homes Additions Screened porchesDecks Kitchen & bath remodeling
Skylights RepairsSeamless gutters
N.C. Green Building CouncilN.C. Solar Energy Association
N.C. Home Builders Association
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Energy Efficient ConstructionEnvironmentally Sound Techniques
Healthy House Alternatives
1419F Crawford Dairy Rd.Chapel Hill, N.C. 27516
GEORGIA BIZIOS, AIA
104 Rose LaneChapel Hill, NC 27514
Phone: 919·960·2779Fax: 919·967·7545Email: [email protected]
A R C H I T E C T U R A L C O N S U LT I N G
CHAD F. CHANDLER ARCHITECT, PA
“green building design”
5108 Damask CourtFuquay-Varina, NC 27526
919-557-7109
8 CAROLINA SUN Fall 1999
Chapel Hill
Broadwell/Darnell Residence (open 12-4pm) 6Passive Solar
Architect Wayne Jones, Brown & Jones Architects Builder Mark Perry, Sundog Builders
Style Contemporary - Farmhouse
Year Built 1999
Size 2700 sq.ft.
Cost $90/sq.ft.
Utility Costs Unavailable
Features Vertical loop ground source heat pump heatshouse and preheats water heater. Concretestorage mass on southern end of house withradiant heat system. Future plans for solar hotwater system to supplement floor heatingsystem. 2x6 exterior walls with blown Cellu-lose insulation. Estimated R-21. Woodstovewith recycled brick surround. Recycled heartpine flooring. Radon evacuation system inslab. Trombe wall at stairs. 350 sq.ft. southfacing glass; south windows are northernlow-E. Space Guard fresh air filter
Licensed Contractor, Plumber, and Electrician
Designer/Builder of Passive Solar andEnergy Efficient Homes and Additions
SUNDOG
BU I LDERS
Mark PerryP.O. Box 326
Bynum, NC 27228(919) 545-0662
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Brown & Jones,ArchitectsCharles Brown, AIAWayne Jones, AIA
- dedicated to conscientiousclient service and environmentallyresponsible design and construction
Solar Home Designs
Daylighting
Passive and Active Solar DesignAdditions/Renovations
Renewable Energy Systems
14 North Boylan AvenueRaleigh,NC 27603(919) 831-2625e-mail: [email protected]
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Fall 1999 CAROLINA SUN 9
Solar VillageInstitute, Inc. 336 . 376 . 9530
Do you wantThe Power?
We’ve been installingphotovoltaic, hydroelectricand wind energy systemsfrom the mountains to thecoast since 1992. We canput in a reliable, professional-quality system to meet yourneeds and fit your lifestyle.
Call us to find out more!
Or visit our websitewww.solarvillage.com
See our systems on the North Carolina Solar Home Tour
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Hudepohl/Khalsa Residence (open 12-4pm) 7Passive Solar, Active Solar, Solar Electric
Designer Owner
Builder Nationwide - First Value Homes
Solar Contractor Solar Electric, Chris and Lynne Carter,Solar Village Institute; Solar Hot Water,Chandler Design/Build
Style Traditional modular home with expansivesouth-facing glass and dormers to provideextra solar gain in the second story.
Year Built 1999
Size 3,100 sq.ft. + 2 car garage with utility rooms
Cost Not available
Utility Costs Not available
Features 2x6 walls R-19 batt w/house wrap. R-30 roof &R-19 floor. One and a half story over crawlspace with dormers. Low-E glass on north,east and west. Clear glazing and retractableawnings by Custom Canvas Works for south-facing glass to optimize heat gain andshading. All windows are vinyl clad. Tile floor3’ & 4’ wide along south glazing + 3 Ton stonevertical wall (15’ long x 3’ high) for thermalmass by Joseph Kenland. Ground source heatpump by Evangelist Service Co. (4 Ton WaterFurnace) 600 ft ground loop 6’ deep. 500 galpropane tank buried for cooking and propane/electric generator. Sunfrost refrigerator. Woodcook stove for backup. Four 75W PV panelsfor well pump and 24 Volt sheer flow windgenerator as back up (3000W). WATSUN dualaxis solar tracker with (18) 75W PV panels forelectricity withTrace Inverter for split circuitsin the house. 900 gallon water storage for 2households with shared well/pump/tank. Fourground-mounted solar hot water collectors.
Note The owner previously spent 10 years retrofittingan existing home with passive and activesolar. After taking the solar tour 7 years ago,he was convinced to do it right from theground up. Every possible system isengineered into this house. Consulting wasprovided by Henry Rogers at the NC SolarCenter, Phil Bisesi at Advanced Energy, andGiles Blunden. Passive solar, active solar,PV, wind AND a modular home in a smalldeveloping community in rural Orange County.
CASSEDY
FAHRBACH& CABINET DESIGN
(919) 542-2578
Fax (919) 542-2748
P C
E F
IERCE ASSEDY
DWARD AHRBACH
P.O. Box 788 • Pittsboro, NC 27312
Highway 64 West
Kitchen and Bath Design • Cabinetry • Interior Millwork
Not only Solar — but Sustainable
Not only Solar — but Geothermal
Not only Solar — but Economical
98% Renewable/Recycled Materials in our Kits
For Summer cooling as well as Winter heating
Precut Numbered Kits - Free Delivery in NC
Visit our Website at: http://enertia.comP.O. Box 58442, Raleigh, NC 27658Tel. (919) 556-0177
ENERTIA BUILDING SYSTEMS, INC.
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Fall 1999 CAROLINA SUN 11
FRANK COLEBUILDING COMPANY
INC.
SERVICEClient
QUALITYHeirloom
BUILDINGSBeautiful
An engineering approach to Heating & Cooling
ComfortApplying Building Science
101 Center Street in Carrboro 942.3392
Low Maintenance
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Giles Blunden Architect
Custom Home DesignRemodeling and Additions
Solar DesignCohousing Development
919-967-8505
Giles Blunden Architect
Custom Home DesignRemodeling and Additions
Specializing In
Solar DesignCohousing Development
919-967-8505
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Weaver Street RealtyWeaver Street Realty
You’ll enjoy full-service real estate from ouragents, who know the ins and outs of Land,Homes and Farms.
We have several lots in Solterra, a solar co-housing community, for sale. Enjoy sharedcommon land and individual garden plots.Convenient location off Erwin Road, nearthe border of Orange and Durham counties.
Call us at 929-5658 or visit us at116 East Main Street, in CarrboroSi
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12 CAROLINA SUN Fall 1999
Carrboro: Arcadia
Curtis/Granda Residence (open 10am-2pm) 8Passive Solar, Active Solar
Architect Giles Blunden, Architect Builder Hartford Construction
Solar Contractor Solar hot water: Fred Stewart, SolarConsultants
Year Built 1996
Features 1300 sq.ft. Solar hot water. Radiant floor.Passive solar. Clerestory ventilation.1 story home in a neighborhood designedfor sustainability.
Blunden/Blakeley Residence (open 10am-2pm) 9Passive Solar, Active Solar, Solar Electric
Architect Giles Blunden Architect
Builder Giles Blunden
Solar Contractors Solar hot water: Fred Stewart, SolarConsultants; Solar electric: Chris and LynneCarter, Solar Village Institute
Style Contemporary
Year Built 1996
Size 800 sq.ft.
Cost N/A
Utility Cost $20 per month
Features Solar electric power (photovoltaic system),solar hot water, passive solar, radiant floor,energy efficient appliances. The house isbermed into the earth. This is a small, veryefficient house off the grid in a suburbanneighborhood. A totally “all-solar” home.
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Fall 1999 CAROLINA SUN 13
Stein Residence (open 10am-2pm) 10Passive Solar
Architect Giles Blunden Architect
Builder Bob Hartford, Hartford Construction
Style Contemporary
Year Built 1996
Size 1700 sq.ft.
Cost N/A
Utility Cost N/A
Features Passive solar with radiant floor. This one storyhome is in a neighborhood designed forsustainability.
Common House (open 10am-2pm) 11Passive Solar
Architect Gail Lindsay, Design Harmony
Builder Construction Resources
Style Contemporary
Year Built 1999
Size 3000 sq.ft.
Cost $275,000 & a lot of sweat equity
Utility Cost N/A
Features Passive solar design; earth bermed. This is theCommon House for Arcadia community andhas a 5-sided window wall in the dining roomwhich seats 50, large kitchen, guest rooms,office, children’s playroom and laundry.
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14 CAROLINA SUN Fall 1999
Hillsborough
Weber Residence (open 10am-2pm) 12Sun-Tempered
Designer Owner
Builder Havencroft (owner)
Style Transitional
Year Built 1999
Size 4250 sq.ft.
Cost $90 per sq.ft.
Utility Costs N/A
Features Southern part of main level on a slab (500 sq.ft.)with a tile finish. Sun-Tempered with an openfloor plan to promote convective air currents.Isokern wood burning fireplace. Hardiplank/stone exterior. 362 sq.ft. southern glass. Highefficiency gas furnace; electric and gas waterheaters. Family rooms in attic for winter andbasement for summer use. Tight construction;blown cellulose insulation.
888 544 7909Toll Free
Email: [email protected]/~havencroft
CUSTOM HOME DESIGN AND CONSTRUCTIONOur goal is to create a relaxed partnership with the client and builder while focusing onefficient communication. Out of this process grows the home you’ve dreamed of; a lowmaintenance structure that will provide generations of comfort and pride while meetingyour lifestyle needs and your budget.
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Derive the plan that you want for both interiorspace and exterior appearance.
Obtain computer generated 3D views to enhancethe creative process.
Discuss various construction techniques from thesimple to the complex.
Discover “threshold products” that may beunknown to most builders, that will augment theenjoyment of your home for years to come.
Benefit from extensive plan review for structuralintegrity, scale, proportion, overall harmonybetween selections, flow and functionality, trimdetails and potential cost savings.
Receive elevation, perspective, structural, cutaway, and plot plans, including stampedblueprints ready for permit and construction.
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Efficient relationships with bank and buildingdepartment, engineers, utilities, and developers.
Materials evaluation and performance reviews.
High quality team of professional tradespeople.
Detailed interim financial reports, budgettracking, and scheduling updates.
Design and Construction of Passive Solar and Energy Efficient Homes!
FROM VIRTUAL TO REALITY
EXTENSIVE DESIGN CONSULTATION
EFFECTIVE PROJECT MANAGEMENT
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Fall 1999 CAROLINA SUN 15
437 Dimmocks Mill Road Hillsborough, NC 27278919.732.9612
❖ The broadest selection of
standard and custom windows
❖ Wood, steel, vinyl, and
fiberglass doors
❖ New construction and remodeling
❖ Expert installation
❖ Marvin, Norco, Vellux
Replacement
windows
and doors
in wood
fiberglass
vinyl
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Environmentally
Sensitive Architecture
Solar
Daylighting
Small Commercial
Residential
❂
Alicia Ravetto, AIA
Architect
❂
400 West Weaver Street
Carrboro, NC 27510
919-933-0999 tel
919-933-1988 fax
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Environmental Quality Control
Comfortable, Healthy, Energy EfficientStructures
121 S. Estes Drive, Suite #104Chapel Hill, NC 27514Office 919/942-8331
Fax 919/[email protected]
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16 CAROLINA SUN Fall 1999
Efland
Rivera/Wasnak Residence (open 10am-2pm) 13Passive Solar, Active Solar
Architect Alicia Ravetto, AIA Architect
Builder Metz & Dehart Builders, Inc.
Solar Contractor: Active solar designed by Jeff Reilich,Environmental Quality Control.
Style Traditional exterior brick with hip roofs and aunique floor plan including an open courtyard
Year Built 1998-1999
Size 2,686 sq.ft. heated + 623 sq.ft. heated swimmingpool room + 695 sq.ft. unheated garage + 107sq.ft. screen porch
Cost Approximately $355,000
Utility Costs N/A (moved in June 1, 1999)
Features The unique program called for 2 masterbedrooms and 2 master bathrooms. It is athree generation family (6 people). In orderto provide as much solar access as possiblewithout making an extremely long building,an interior courtyard was introduced withcirculation on 3 sides. This allows for an areathat collects heat almost like a sunspace infront of one of the master bedrooms and thepool. The windows between the 2 rooms andthe sunspace (hallway) will allow heat to betransferred by convection. Low maintenancematerials were chosen. Indoor air quality wascritical due to family members’ allergies. Theactive solar panels will provide domestic hotwater and preheating for the radiant heatingsystem in the Living-Dining-Kitchen area,which can be used in emergencies for thewhole family. A comprehensive panelincludes all the controls in the crawl space.
Features South facing glass equals 12% of floor area,with adequate overhangs. Color concrete slabthroughout with radiant heating (3 thermalzones). Cooling: 45,800 Btu (5 Ton Air HandlingUnit & 4 Ton condenser) Heating: 69,000 Btu.(2) heat pumps by Trane 10 SEER. 1½ Ton 10SEER in Living Area & 2½ Ton 10 SEER inBedroom Area with Honeywell zone controlsystem with Thermostats in both MasterBedrooms. Radiant Pipes by Heatwayimbedded in the slab. Boiler with LP gasbackup heat and active solar (10 panels).Aluminum clad windows, casements withappropriate use of low-e glazing byKolbe&Kolbe. 2x4 walls w/R-13 unfacedfiberglass batts, blown-in cellullose in theattic R-30. Swimming pool room has R-30 incathedral ceiling and all walls are insulatedw/vapor barrier. In order to provide additionaldaylighting 2 skylights were included. It has aseparate dehumidification system. Cooling:9,000 Btu (Future plans include the installationof solar panels to heat the pool water). 2x10floors w/R-19 batts in suspended slab. Slab ongrade with perimeter insulation.
(919) 863-4100 CALL US TODAY !2501 Blue Ridge Road, Suite 150
Raleigh, NC 27607FAX: (919) 863-4101
WWW.yourofficeRaleigh.com
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Your costs are kept low, your timecommitments are kept short (no longterm leases - unless you want one).You decide the exact combination ofspace and support services that youneed and we’ll tailor a packageaccording to your requirements.
Prestigious AddressHigh Tech Phone SystemsElegant Conference Rooms
Gen . Office ServicesFax/Copy/
Professional Receptionists
Building Directory ListingVideo Conferencing
Furnished/Unfurnished Offices
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Fall 1999 CAROLINA SUN 17
David Hillman
Windows, Doors & Millwork
8101 Brownleigh Drive • Raleigh, NC 27612Office Ph. 919-783-5386 • Office Fax 919-783-9003
raleighspecialty
products INC
No matter how talented a builder is, every projecthinges on the products he uses. That’s why the bestuse Andersen Windows. No other window complements a builder’swork so well. Or delivers satisfaction for so long. Looking for abuilder? Remember this: Great builders and great window go together.
®
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SolarConsultants
terrestrial solar systems
ConsultingInstallation
Service
Active Solarand
Radiant Heat
919 831-5304
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Innovative Design...
850 West Morgan StreetRaleigh, NC 27603919-832-6303 • 919-832-3339 (fax)[email protected]
Leader in EnvironmentallySensitive Design
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18 CAROLINA SUN Fall 1999
RaleighNCSU Solar House (open 10am-4pm)
14
Passive Solar, Active Solar, Solar Electric
Architect/Designers Innovative Design and NCSU Depts.of Mechanical and Aerospace Engineeringand Civil Engineering
Builder Ammons Construction Company
Style Transitional
Year Built 1981
Size 2020 sq.ft.
Cost
Utility Costs <$70 heating costs per winter
Features This demonstration house is on the McKimmonCenter campus of NCSU in Raleigh and will beopen all day. It is passive solar design with anisolated sunspace and two Trombe walls, andhas an active solar water heating system. The3.6 kW PV array on the roof supplies power toa battery bank; the house is connected to theelectric grid. Ground source heat pumpprovides back up heat in winter and cooling insummer. The house has an extensive libraryand series of free printed materials on solarand renewable energy.
Holly Springs/Fuquay VarinaMcDermott Residence (open 10am-2pm)
16
Active Solar, Solar Electric
Architect N/A
Builder N/A
Solar Contractors Solar electric systems: Chris and LynneCarter, Solar Village Institute; Solar hot watersystem: Fred Stewart, Solar Consultants
Style Traditional ranch (not passive solar)
Year Built 1994
Size 1200 sf
Cost n/a
Utility Cost $15/month
Features Standard ranch house with closed looppressurized solar hot water system (onepanel) which is oversized (the collector tostorage ratio was increased by 1/3) since itfaces east, matching the orientation of theexisting house.The solar electric systemincludes both wind and photovoltaics (PV).The 210 Watt PV system is on a single axistracker pole (which follows the sun’s path)and was installed in 1996. A 750 Watt PVsystem is planned later this year and will beon a dual-axis tracker. The wind generator is
on a 64-foot tilt-up steel tower, allowing it to beserviced on the ground and protected duringhurricanes. It has a rated output of 1000 Wattsand was installed this summer. Both systemsare charging a battery bank (twelve 24 Volt DC1050 amp-hour batteries) which, through theinverter, converts the solar electricity to ACand powers ALL 120V loads in the house. Theinverter has a transformer that runs the well,which is 240V. Rated output of the inverter is4000 watts of Sinewave power.
Note The homeowner has relied ONLY on solarheated water since its installation withoutresorting to any backup water heating source.Homeowner is seeking assistance to usecurrent woodstove to help heat water tankduring cloudy winter days. The homeownerrelies ONLY on sun/wind to charge the batterysystem and has never used ‘the grid’ tocharge/recharge them.
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Fall 1999 CAROLINA SUN 19
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EfficientRenewableFuelEnvironmen-tally FriendlyFireplacesStovesMasonryHeaters
FireplaceEditions
Tue.-Fri. 11-5:30 • Sat. 9-2102 West Main Street, Carrboro
919-968-8101 • FAX 919-969-8353www.fireplaceeditions.citysearch.com
Additions • KitchensWhole House Renovations
833-3389
Renovations in Raleigh and Cary
Gold
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AlternativeEnergy Products
Sales and Installations
Rod BairdTel. 828-264-4484
726 Green Knob Mt. Rd.Boone, NC 28607
Micro-HydroPhotovoltaics
Energy from the Sunfor the Heart and Soul
20 CAROLINA SUN Fall 1999
Lake Wheeler Area
Argentati Residence (open 12-4pm) 17Passive Solar
Designer John Argentati
Builder Dennis James, Home Environments, Inc.
Style Contemporary
Year Built 1999
Size 4928 sq.ft. total (3200 heated living space; 1728partially finished, heated basement; 192 isolatedgain sunspace; 88 attached greenhouse)
Construction Cost $380,000 (Completed July of 1999)
Utility Costs Unknown at time of publication
Features 12x16 - 2½ Story, isolated gain sunspace. 7x16attached, solar greenhouse. 12x16, 5" thicksolar slab in dining room. 2x6 Construction.Pella low-E windows and sliding doors.Blown-in cellulose insulation (recyclednewspaper) and air sealing. Finnish soapstone fireplace (Tulikivi 2450). Clerestorywindows, small skylights, and Solatubes areused for daylighting. 3’ roof overhangs andbalconies shade south-facing windows duringcooling season. Two Tamarack whole housefans are used for cooling during transitionmonths. Properly sized Trane heat pumpsequipped with Space Guard air filtrationsystem. Home is pre-plumbed for future solarhot water heater. Roof pitch is latitude (35.5°)for optimal, year round, solar collection infuture. Centrally located mechanical roomhelps reduce heat loss/gain from of waterlines and HVAC ducts. Ceiling fans throughout.550 sq.ft. daylit/sun-tempered home office.Recycled heart pine flooring. 1200 gallonunderground, rainwater collection system(for irrigation).
Jaramillo Residence (open 12-4pm) 18Passive Solar
Designer Owner
Builder Dennis James, Home Environments
Style Transitional
Year built 1999
Size 2800 sq.ft.
Cost $250,000
Utility Cost Average $70 per month
Features Passive solar house with courtyard entranceon north. Most rooms open into commonareas for even distribution of solar heat.First floor is concrete slab with Mexican tilefor thermal mass. Windows on north, eastand west are low-E glass. An arbor withadjustable awnings over the south windowsregulates the amount of sunlight on thethermal mass. Earth berm planters on northand west hold heat or cool in the house.Energy efficient features include R-30insulation in 2 x 6 walls and whole house fan.
N
Fall 1999 CAROLINA SUN 21
Pfeiffer Residence (open 12-4pm) 19Sun-Tempered
Designer Barry Henderson, Residential Design
Builder Kevin Poythress, Poythress Construction
Year Built 1999
Style Transitional
Size 3570 sq.ft.
Cost $236,000
Utility Cost N/A
Features Sun-tempered house with active solar features.Sun-tempered features include minimal glasssurfaces on east and west and low-E glassthroughout. Active features includeallowances for a roof collector in future,insulated concrete slab basement floor withhydronic coils for heat storage, heatexchanger sized to allow additional coils tofeed from solar collector or thermal slab, andhollow concrete block walls on the south andeast basement walls which are veneered withdark rock and power-vented to collect anddistribute gained heat. The house has 3bedrooms, 2½ baths, bonus and family roomsin an open design in three stories including afull basement. It is oriented due south and hasa 10/12 (37°) pitch roof.
RENAISSANCE-WORKSEnergy Conservation Products, Services and ConsultationTom Mincarelli, P.O. Box 1118, Black Mountain, NC 28711
Tel. E-Mail:(828) 669-1125 or (828) 669-7053 [email protected]
ENERGY CONSERVATION FOR RESIDENCE OR BUSINESS MAKES $ENSE!**** PRODUCT LINE ****
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Solar Modules
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Batteries
Charge Controllers
Inverters
Solar Light Systems
Lighting Systems - AC/DC
Composter Tumblers
Composting Toilets
Water Conservation Products
No-Salt Water Conditioning Systems
Energy Efficient Refrigerators
Energy Efficient Washing Machines
Water Pumps AC/DC/Solar/Wind
Sun Ovens
Sun Light Pipes
Radiant Heating Systems
Radiant Barrier Insulation
Solar Hot Water Systems
Instant Water Heaters
Hurricane Proof Dome Homes!
Mike Beaver
807 Corporate CircleSalisbury, NC 28147(704) 637-9595 Phone(704) 636-3764 Fax
“Since 1919”Heating • Air ConditioningSolar Energy
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22 CAROLINA SUN Fall 1999
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Definitions of Solar Home FeaturesPassive Solar Homesare those optimally designed to take advantage of thesun for heating in the winter and are shaded with anoverhang, trellis, etc. in the summer and swing months.These homes have calculated amounts of thermal mass(concrete, tile, stone, etc.) and glass, and their solarfeatures are oriented to the south. A passive solar homeis one in which the building itself is the solar collectorand heat storage system.
Sun-Tempered Homesare designed to take advantage of the sun and areoriented to the south, but have less glass to the south,possibly more glass to the east, west and north, andmay not have optimal amounts of thermal mass. Theygenerally perform better than an average home butnot as well as a totally passive solar home.
Active SolarVery basically, an active system depends uponmechanical and electrical apparatus to move the heatfrom the collector to the storage medium and fromstorage to the living space. Some houses on the tourinclude active solar water and space heating systems.These systems are installed on houses that are passivesolar, sun-tempered, and/or have a solar electric system.These systems use the sun to heat or preheat the waterheater, radiant floor or other heating system.
Solar Electric SystemsWind power and photovoltaic (PV) systems are featuredon houses on this tour. The wind generators include atower (“windmill”) and a battery storage system; the PVsystems consist of solar panels either on the roof orrotating on a pole to track the sun’s path and use abattery storage system. Systems may include an inverterto convert solar electricity from dc to ac. There are manyways these systems can be hooked up to the home; youwill learn much more on the tour.
Other DefinitionsBack-up SystemThe system used for heating the house when the solarsystem is unable to do the job alone, such as after anextended period of cloudy days.
CollectorA device or building part that collects the sun’s energy.
Direct GainA design whereby the sun enters the living space directlyand heats it.
Earth-sheltered or earth-bermingThe practice of piling earth around the house. In theextreme case, the house is placed in the ground withearth around and on top of it. In other cases, earth isbermed up against some of the walls. This practicetempers the effects of outdoor climatic changes.
GlazingThe term for the material, such as glass, fiberglass,plastic film, etc., that covers the collector but allows thesun to shine in. The most common glazing is the glass ofa normal window. Double- or triple-glazing simply refersto placing two or three layers of glazing material, with air
spaces in between, over an opening for added insulation.A storm window placed over a window is an example ofdouble-glazing.
Ground Source Heat PumpA heat pump that uses the ground temperature insteadof air temperature to cool or heat a home. Usually thisis accomplished with underground water pipes thattransfer the ground temperature into the heat pump.There is no outdoor unit.
Heat ExchangerA device that transfers heat from a medium such as airor water to another medium. For example, the fluid in asolar collector is often an anti-freeze solution. Thissolution is heated in the collector, moves through theheat exchanger to transfer the heat to the domesticwater supply, and returns to the collector to be reheated.
Heat Storage MediumUsed to store the heat collected from the sun. Someexamples include a concrete floor, a brick wall, anda brick fireplace chimney. See also Thermal Mass.
Movable InsulationConsists of panels, shutters, curtains, or shades made ofhighly insulating materials that cover windows at nightand on cloudy days and are opened during sunny periodsto let in the solar heat.
Natural ConvectionSimply refers to the natural tendency of warm air to riseand cold air to fall. Designers can take advantage of thisfact of nature by leaving openings in the proper places inthe house to allow for a natural convective loop to occur,thereby moving heated air through the house.
Natural VentilationUses the placement of windows and doors, vents,stairways, etc., to take advantage of cross ventilationand the “stack effect” (or gravity ventilation). The stackeffect is the tendency of warm air to rise, pulling coolerair behind it, to cool the house in the summer.
Radiant Floor HeatA thermal mass floor with pipes laid underneath totransfer heat generated either by a solar collector orother type of water heating system.
Thermal MassMaterial that is used in the house with heat-retainingcapabilities. Most commonly used are concrete, stone,brick, and water. Proper sizing of the amount of massfor the amount of collector area is crucial for efficientoperation of a solar house. Not enough mass can easilylead to over heating, while too much mass will preventadequate heat from transferring into the living space.See also Heat Storage.
Trombe WallMassive wall located directly behind a section ofsouth-facing glass, with a small air space between theglass and the wall. Solar radiation comes through theglass and heats up the wall, which then radiates the heatdirectly to the living space behind it. Some Trombe wallsare vented to allow heated air between the glazing andthe wall to circulate into the room.
Fall 1999 CAROLINA SUN 23
North Carolina Solar Energy Association2501 Blue Ridge Road, Suite 150Raleigh, NC 27607
Non-profit Org.U.S. Postage Paid
Raleigh, NCPermit No. 1183
NORTH CAROLINA
SOLAR CENTER
American Solar Energy Society
Division
North CarolinaDepartment of Commerce
NCSEA thanks thetour organizers
Triangle AreaHank Wall, chairChad ChandlerTom HenkelBarb IrlbeckPaul KonoveJim MeloyAlicia RavettoEleanor SettleLarry ShirleyJill SmithJon ZubizarretaSusan Luster, staff
AshevilleSke and Kitty Boniske
BooneMarcus Renner and Appalachian State UniversitySolar Energy Society
Burnsville AreaJune Engman
And thanks to all the volunteerson tour day.
