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HTS Engineering - Boston Company Presentation created by Evan Miller. Presentation emphasizes customizability of the HTS product line. HTS Engineering is a Toronto based firm with offices throughout the United States. HTS represents HVAC manufacturers.
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OFFERING HEAT TRANSFER OFFERING HEAT TRANSFER SOLUTIONSSOLUTIONS
Who are we?• Located in Peabody, MA
• 9 Degreed Sales Engineers
• 1 Secretary/Sales Assistant
• In Business Since 1996
HTS Boston
Arsenal St.
Novartis
South Shore Conservatory
Kimball Woods
Biogen
Harvard Life Sciences
Worcester Courthouse
Good Samaritan Medical Center
Philosophy
• Support Engineers With Fast, Quality Design Information
– Keep Engineers out of Trouble
• Deliver Quality Systems And Products On Time At Competitive Prices
• Never Leave An Engineer Or Owner With A System Or Product That Doesn’t Work
Engineering Focus
• Air Handling Systems
• Factory Packaged Mechanical Rooms
• Compressorized Systems/Chiller Systems
• Additional HVAC Products
Engineering Focus
• Air Handling Systems
• Factory Packaged Mechanical Rooms
• Compressorized Systems/Chiller Systems
• Additional HVAC Products
Air Handling
• Air Handling Systems
– Custom Units
– Heat Recovery Systems
– Natatorium Units
– Desiccant Units
Air Handling
• Air Handling Systems
– Custom Units
– Heat Recovery Systems
– Natatorium Units
– Desiccant Units
Custom Units• Quality Product
• Quality Product
• Tight CasingLess Than 0.5% Leakage @ 12” S.P.Welded Floors, No Oil CanningWater-Tight, Contains CondensateOn Time DeliveriesSuperior Esthetics With Highest Quality FinishVery Few Site Issues
Custom Units
Custom Units
• Same-Day Turn-Around On Comprehensive Designs
Custom Units
Custom Units
Custom Units
Custom UnitsUMASS Amherst ISB
ATT
AT&T
Custom Units
Biogen-1
Custom Units
Biogen-2
Custom Units
Biogen-3
Custom Units
Carnegie Custom Units
Hahnemann Custom Units
Harvard Laser Custom Units
HR Coils Custom Units
ZebrafishCustom Units
• 100% Outdoor Air Units
• Packaged DX Units (Air-Cooled or Water Cooled Condensing Sections) (Water-Source Heat Pumps Up To 200 Tons)
• Natural Gas Heat (Direct or Indirect)
• Indirect and Direct Evaporative Cooling
Custom Units
• Double Wall Panelized Casing– Results in rigid
construction– Eliminates leaks– Accessible for easy
maintenance
• Frame– Welded steel base– Extruded aluminum tubing– Cast aluminum corners
• Removable Panels– 2” or 4” thick– Fiberglass or foam
insulation
Custom Units
• Energy Recovery– Flat-plate heat exchangers– Energy wheels
• Heating– Indirect gas furnace– Direct gas furnace– Hot water coil– Steam coil– Heat pumps– Electric
Custom Units
• Cooling
– DX coil
– Chilled water coil
– Evaporative Cooling
• Packaged Refrigeration
– Air cooled condensing unit
– Water cooled condensing unit
– Water source heat pump
• Ground source or Boiler/Tower
– R22 & R410a Refrigerants
Custom Units
• Example 1:– 50,000 CFM with Flat Plate HX– CW Cooling– HW Heating– Integral gas fired humidification (2,160 lbs/hr)– Duct Silencers– Heated service vestibule– 99.97% HEPA Filters– Built in 7 sections for shipment (too wide – 22’)
Custom Units
Custom Units
• Example 2:
– 20,300 cfm
– 66 ton chilled water cooling
– 66 ton emergency DX cooling
– (4) scroll compressors
– UV lights on both cooling coils
– 12” 95% cartridge final filters
– SF & EF VFD’s
Custom Units
Custom Units
• Example 3:– Redundant air tunnels, 2000 cfm– Common Base Frame– Integral Electric to Steam Generator– Two 8 ton refrigeration systems
• hermetic scroll compressors• 2 cooling stages each• Modulating Hot Gas reheat
Custom Units
Custom Units
• Example 4:– Multi-zone– Replacement Project – 12 units– 6,400 – 13,500 CFM– Dual deck– Hot water heat– Air cooled Refrigeration
Custom Units
Custom Units
• Example 5:– Evaporative Condensed
Custom Units
• Patriot Place:– Air-Cooled Condensing Section
Custom Units
• Frisbee Hospital:– Evap-Cooled Condensing Section
Custom Units
• Frisbee Hospital:– Evap-Cooled Condensing Section
Custom Units
Air Handling
• Air Handling Systems
– Custom Units
– Heat Recovery Systems
– Natatorium Units
– Desiccant Units
• 4 Methods of Heat Recovery
Flat Plate Heat Exchangers
Enthalpy Wheel
Heat Recovery Coils (Run Around Loop)
Heat Pipes
Heat Recovery
• Flat Plate Heat Exchangers
– Aluminum plates are ribbed or dimpled
– Plates stacked to create adjacent air flow passages
– Operation• Two air streams pass in close
proximity without mixing• Sensible energy is transferred
through plates
Heat Recovery
• Flat Plate Heat Exchangers
• Advantages:– Low maintenance
• No moving parts• Wider air passages
– Reduced fouling risk– Lower pressure drop
– Higher efficiency than heat pipe– Less expensive than pipes, wheels– Consistent performance over time– Easy to clean and inspect
• Disadvantages:– Lower efficiency than heat wheel– Sensible energy transfer only
Heat Recovery
CUSTOM ERU W/ FLAT PLATE HEAT EXCHANGERS
Return Air Supply Air
Outside Air
Filter
Heat Pump Coil
Exhaust fanFlat plate HX
Filter
Side Elevation100”h x 84”w x 195”l
Compressors
Heat Recovery
CUSTOM ERU W/ FLAT PLATE HEAT EXCHANGERS
Heat Recovery
• Enthalpy Wheel– Variety of Sizes For Different
Recovery Capacity– Frost Control and Economizer
Options– Aluminum or Synthetic Construction
• Advantages:– Higher efficiencies (70-80%) than pipes or plates– Latent transfer capability
• Disadvantages:– Higher maintenance– Higher risk of fouling– Odors/other contaminants can be reintroduced to the space (especially
nicotine)– Particulate matter can be reintroduced to the space– Due to leakage/purge, fans must move 10-25% more air
Heat Recovery
• Enthalpy Wheel
Heat Recovery
• Heat Recovery Coils (Run Around Loop)• Two coils are piped in a loop
– One coil in cold air stream– One coil in warm air stream
• Liquid coolant circulated with pump between coils
• Advantages:– Supply and exhaust air stream need
not be together– No possibility of air streams to cross
contaminate
• Disadvantages:– Lower efficiency than pipes, plates, wheels– Higher total costs– Pump consumes energy– Glycol required to prevent freezing– High FPI required to achieve moderate efficiency
• Higher pressure drops• Prone to fouling
Heat Recovery
• Heat Recovery Coils (Run Around Loop)
• Example:– 21,000 CFM ERU– Brought into building through freight elevator– Fit into freight elevator - Max dimensions of 76”H x 76”D x
36”W– Split into 10 pieces and 2 remote condensing sections– Run around coil for energy recovery– 4 circuit, 8 stage, 128 ton water cooled condenser– HW heating
Heat Recovery
• Heat Recovery Coils (Run Around Loop)
Heat Recovery
• Heat Pipes– Refrigerant sealed in finned tube coil
– Coil split between warm and cold air streams
– Operation
• Refrigerant evaporates and condenses to transfer energy
Warm air is cooled by evaporating
refrigerant
Cold air is warmed by condensing refrigerant
Sealed tube,tilted filled with refrigerant
Liquid refrigerant is evaporated by the
warm air
Condensed liquid flows back to warm side
Vaporous refrigerant is condensed by the cold air
Heat Recovery
• Heat Pipes
• Advantages:– Side-by-side air flows (better in certain applications)
• Disadvantages:– Uses refrigerants
• Possibility of refrigerant leakage– Tight fin spacing
• Higher pressure drops• Higher risk of fouling
– Lower relative efficiency than wheels and plates– Sensible energy transfer only– More expensive than plates, comparable cost to wheels
Heat Recovery
Heat RecoveryDesigned To Condition And Deliver Fresh Air to Either The Space Or The Intake of A Conventional Air Handler
LASER-1:
Heat RecoveryLASER-1:
Heat RecoveryHave An Exhaust Air Blower And Additional Heat Exchanger For Energy Recovery From Exhaust Airstreams
LASER-2:
Heat RecoveryLASER-2:
Heat RecoveryGrinnell:
Air Handling
• Air Handling Systems
– Custom Units
– Heat Recovery Systems
– Natatorium Units
– Desiccant Units
• Pool consultants, owners, and design engineers experience problems with: – Rotting buildings, structural members– Sick swimmers– Odors– Inability to control water chemistry– Complicated systems for owners to operate
Natatorium Units
• The main causes of first four problems have been identified as:
– Insufficient outside (ventilation) air– Ineffective airflow distribution
Result: Chloramines buildup
Natatorium Units
• Maximized Outdoor Air
• Natural Humidity Control
• Improved Indoor Air Quality
• Increased Natatorium Life
• Decreased Costs• Lower Initial Cost• Lower Operating Cost• Lower Maintenance Cost
Natatorium Units
Natatorium Units
Natatorium Units
• Dehumidify natatorium with outside air up to approx. 55–60F dewpoint
• Provide 25% to 50% O/A.
• Use aux. cooling only when O/A dewpoint above 55-60F.
• Use heat recovery to minimize operating costs.
NDHU
Natatorium Units
NDHU
Natatorium Units
Air Handling
• Air Handling Systems– Modular Units
– Custom Units
– Heat Recovery Systems
– Natatorium Units
– Desiccant Units
Concepts and Designs, Inc. (CDI)
• Ideal For Applications Requiring Dew Point Temperatures of 45oF Or Lower
• Applications Include: Ice Rinks, Hospital Operating Rooms, Libraries and Archival Storage, Museums, Food Processing Plants & Any Building Requiring Very Dry Air
• Specializes in 100% O/A Projects
• Offers Indirect and Direct Fired Natural Gas, Steam or Electric Reactivation
• Quick Ship Capabilities
Desiccant Units
Desiccant Units
1,000 CFM
50,000 CFM
12,000 CFM
Dessicant Units
Desiccant Units
Dessicant Units
Engineering Focus
• Air Handling Systems
• Factory Packaged Mechanical Rooms
• Compressorized Systems/Chiller Systems
• Additional HVAC Products
Boiler Plants
• Housed In Custom Fabricated Double Wall Enclosures Suitable for Extreme Weather
• Factory Built Always Costs Less Than Field Built
• Steam Boilers Or Hot Water Boilers Are Packaged Together With All The Necessary Equipment, Including Breaching and Stacks
Chiller Plants• Fast Turn-Around On Quality Designs
• Housed In Custom Fabricated Double Wall Enclosures Suitable for Extreme Weather
• Factory Built Always Costs Less Than Field Built
• Chiller Plants Include Water or Air Cooled Chillers, Pumps, Cooling Towers, Piping, Valves, and Hydronic Specialties
• Packages are pre-wired with electrical switchgear; drives and control systems
$420K vs. $650K
540 Tons
0.58 kW/Ton
Submittal in 2 weeks
Delivered in 14 weeks
Arsenal StreetChiller Plants
Arsenal StreetChiller Plants
Engineering Focus
• Air Handling Systems
• Factory Packaged Mechanical Rooms
• Compressorized Systems/Chiller Systems
• Additional HVAC Products
Compressorized/Chiller Systems
• Compressorized Systems/Chiller Systems
– Air, Water, & Evaporative Condensed Chiller/Pump Packages
– Modular Chiller Systems
Compressorized/Chiller Systems
• Compressorized Systems/Chiller Systems
– Air, Water, & Evaporative Condensed Chiller/Pump Packages
– Modular Chiller Systems
Condensing Units/Chillers• Anything You Want-Compressorized
• Systems Up To 500 Tons
• Chiller/Pump Packages
• Flexible And Potentially Smaller Footprints
• Low Sound Chillers (Low RPM Fans and Enclosed Compressors)
• Low Ambient Chillers For Reliable Year Round Chiller Operation
• Multiple Flexible Compressor Circuits For Redundancy Or Loading Matching
• Process Temperatures (High & Low)
CHILLER & PUMPING PACKAGE
Condensing Units/Chillers
CHILLER & PUMPING PACKAGE
Condensing Units/Chillers
Condensing Units/Chillers
Evaporative Condensed Chillers
Condensing Units/Chillers
Air Evap Components
240 compressor HP (16) 2hp 28” Propeller fans
186000 CFM 32 fan HP
Total HP = 272 Performance
204 Tons 123°F CT Comp EER = 10.4, Unit EER=9.2 Unit MCA = 469 amps
@460/60/3 Max fuse = 600 amps
Foot print = 96W x 264L x 100H LwA = 107 dBA
Components 220 compressor HP (1) 10hp fan motor
32900 CFM (1) 2hp spray pump Total HP = 232
Performance 207 tons 102°F CT Comp EER = 16, Unit EER=14 Unit MCA = 304 amps
@460/60/3 Max fuse = 400 amps
Foot print = 140W x 204 x 117 LwA = 93 dBA
Condensing Units/Chillers
Higher Efficiencies LEED, ASHRAE 90.1
Reliable Operation Less Total HP, Fewer Motors, Less Air
Lower kW Levels
Lower Amp Draw
Easily Integrated Controls and Pumps
Benefits of Evaporative Condensed Chillers
Condensing Units/Chillers
Air Cooled Chiller with Waterside Economizer
Condensing Units/Chillers
Air Cooled Chiller with Waterside Economizer
Condensing Units/Chillers
Evaporative Chiller w/ Wintertime Full Capacity Operation
Condensing Units/Chillers
Multiple / Independent Refrigerant Circuits
Condensing Units/Chillers
Compressorized/Chiller Systems
• Compressorized Systems/Chiller Systems
– Air, Water, & Evaporative Condensed Chiller/Pump Packages
– Modular Chiller Systems
Modular Chillers• Systems Up To 1000 GPM
• Redundancy
• Space Efficiency
• Perfect For Variable Primary Flow
• Retrofit Applications
• Superior Part Load Operation
• Small Foot Print– 44L X 34W X 79H– Modules Fit In An Elevator
• Sized In 30, 50, & 65 Ton Modules
• Can combine different size modules
• Minimum 15 Tons • Max approx. 300 Tons (2 Compressors Per Module)
• Application Example:– Data Centers
Modular Chillers
Six 65 Ton Chillers, One Operating @ 50 tonsvs.
One 300 Ton Screw Compressor Operating @ 50 tons
The Benefits Of Total Redundancy
Modular Chillers
Modular Chillers
• .71 KW/TON @ FULL LOAD
• .57 KW / TON @ PART LOAD IPLV
• UNLOADS DOWN TO 5% CAPACITY
• Saves $$, Space, Installation, Piping
• Ideal for phased construction
• .59 KW / TON @ FULL LOAD
• 0.5 KW / TON @ PART LOAD IPLV
• UNLOADS DOWN TO 10% OF CAPACITY
ClimaCool Modular Centrifugal
Modular Chillers
Engineering Focus
• Air Handling Systems
• Factory Packaged Mechanical Rooms
• Compressorized Systems/Chiller Systems
• Additional HVAC Products
Variable Frequency DrivesEMERSON (SAFTRONICS)
• 1HP to 800HP Range
• 6 & 18 Pulse Standard Catalog Products
• SAFLINK PC/PDA Program For Programming, Troubleshooting, And Monitoring
• Offer 208, 230, and 460 Volts
• Feature User Friendly Digital Display Systems
• Variety of Options for Customization
Humidifiers• PURE Humidifier Company
• Methods– Electric – Steam to Steam – Gas Fired Humidifiers
• Rapid Absorption (Insty-Pak)
• Microprocessor Control Systems
• Stainless Steel All-Welded Construction– Eliminate Parts that Require Maintenance
Fans/Lab ExhaustPLASTICAIR
VENTURI Fume Hood Exhaust Systems
FRP Fans
Perchloric Hood Exhaust
SKYPLUME Generation II (G2)Tested To Provide Velocity ProfileDesigned To Withstand Downwash Up To 41 MPHConstructed Entirely Of UV Stable FRP, Will Never Rust
Sound Attenuators
Commercial Acoustics• Rectangular, Circular, Non-
erosive, Industrial, and Axial Fan Silencers
• Designed to minimize pressure loss in the air stream
• Offer silencers that prevent the growth and spread of bacterial particles
• Offer static regain systems
Precision & Spot Cooling
UNITED COOL AIR Small Tonnage W/
Application Flexibility
Easy Installation
Wide Variety Of Commercial & Industrial Applications
High Cooling Capacity To Size Ratio for Optimizing Floor Space
Reduced Ducting Costs
Precision & Spot Cooling
Precision & Spot Cooling
Additional Information
HTS Engineering, Inc.3 Centennial DrivePeabody, MA 01960(978) 977-9911 (978) 977-9941 fax