Geothermal AIA

Geothermal Heat Pump Seminar

Kelso-Regen Kelso-Regen Associates, Inc.Associates, Inc.

IntroductionIntroduction

BASICS OF GEOTHERMAL SYSTEMSBASICS OF GEOTHERMAL SYSTEMS

DETAILS OF THE HEAT EXCHANGERDETAILS OF THE HEAT EXCHANGER

DETAILS OF THE BUILDING SYSTEMDETAILS OF THE BUILDING SYSTEM

HELPFUL TIPS AND ADVICEHELPFUL TIPS AND ADVICE

General InformationGeneral Information

• GEOTHERMAL GEOTHERMAL HEAT PUMPS HEAT PUMPS

• GROUND SOURCE GROUND SOURCE • HEAT PUMPSHEAT PUMPS

• GHPGHP

• GEOEXCHANGEGEOEXCHANGE

INTERCHANGABLE TERMS

General InformationGeneral Information

BASIC DESCRIPTION:BASIC DESCRIPTION:– NO OUTDOOR EQUIPMENTNO OUTDOOR EQUIPMENT– LEED & ENERGY STAR CREDITSLEED & ENERGY STAR CREDITS– REDUCE ENERGY CONSUMPTION & REDUCE ENERGY CONSUMPTION &

MAINTENANCEMAINTENANCE– OLD TECHNOLOGY OLD TECHNOLOGY – DOES NOT USE THERMALLY ACTIVE DOES NOT USE THERMALLY ACTIVE

ZONESZONES– MOVES HEAT INSTEAD OF CREATING ITMOVES HEAT INSTEAD OF CREATING IT

General InformationGeneral Information

HOW IT HOW IT WORKS – WORKS – COOLING:COOLING:

General InformationGeneral Information

HOW ITHOW IT

WORKS - WORKS - HEATING:HEATING:

Three heat exchanger types:Three heat exchanger types:

OPENOPEN

Three heat exchanger types:Three heat exchanger types:

HYBRIDHYBRID

CLOSED . . CLOSED . . ..

Three heat exchanger types:Three heat exchanger types:CLOSED: CLOSED: HORIZONTALHORIZONTAL

Three heat exchanger types:Three heat exchanger types:CLOSED: CLOSED: VERTICALVERTICAL

Three heat exchanger types:Three heat exchanger types:CLOSED: POND/LAKE CLOSED: POND/LAKE LOOPSLOOPS

Pros:Pros: NO OUTSIDE NO OUTSIDE

EQUIPMENTEQUIPMENT

NO OPERATING NO OPERATING NOISENOISE

Pros:Pros:

COST EFFICIENCYCOST EFFICIENCY

3 – 5 YEAR PAYBACK 3 – 5 YEAR PAYBACK

TAX INCENTIVES, TAX INCENTIVES, REBATES, GRANTSREBATES, GRANTS

Pros:Pros:

VERSATILITYVERSATILITY

Pros:Pros:

Green and LEED Green and LEED pointspoints

Cons:Cons: Unexpected ground Unexpected ground

conditionsconditions

Cons:Cons: Neighbor Neighbor

annoyanceannoyance

Cons:Cons:

Dirty Dirty ProcessProcess

Cons:Cons:

Land Area Land Area RequiredRequired

Site PrepSite Prep

SurveySurvey

(HVAC load (HVAC load calculation)calculation)

Site Prep - HorizontalSite Prep - Horizontal

TrencheTrenches with s with straight straight tubingtubing

Site Prep - HorizontalSite Prep - Horizontal

Excavations Excavations with “slinky” with “slinky” loopsloops

Site Prep - VerticalSite Prep - Vertical

Test Bore HolesTest Bore Holes

Site Prep - VerticalSite Prep - Vertical

Purpose... Purpose...

Site Prep - VerticalSite Prep - Vertical

Drill Log Drill Log

CasingCasing??

Thermal Conductivity TestThermal Conductivity Test Testing EquipmentTesting Equipment

Thermal Conductivity TestThermal Conductivity Test

GRTI Test DataGRTI Test Data

GRTI Test ReportGRTI Test Report

Drilling EquipmentDrilling Equipment Drilling RigDrilling Rig

Drilling EquipmentDrilling Equipment

Trailer with Trailer with drill and drill and casing pipingcasing piping

Drilling EquipmentDrilling Equipment

Water tanks Water tanks & fuel tank & fuel tank trailerstrailers

Drilling EquipmentDrilling Equipment Grout & Grout Grout & Grout

PumpPump

Drilling EquipmentDrilling Equipment Pipe Pipe

LoopsLoops

DrillingDrilling

Drilling: beforeDrilling: beforeCertified Driller with Certified Driller with

water-well driller & water-well driller & loop installer licenseloop installer license

Drilling: Drilling:

Site Survey – hole spacing Site Survey – hole spacing minimum 20’ apartminimum 20’ apart

Drilling: processDrilling: processDrill holes Drill holes

(with (with casing if casing if needed)needed)

Drilling: processDrilling: process Insert BHE Insert BHE & & Pressure Pressure Test Test PipingPiping

Drilling: processDrilling: process GroutGrout

Drilling: processDrilling: process

GroutGrout

Drilling: processDrilling: process

GrouGroutt

Drilling: processDrilling: processGrout fill Grout fill

processprocess

Drilling: processDrilling: process

Remove Remove Casing (if Casing (if used)used)

Drilling: trench systemDrilling: trench systemTrenchTrench Pipe manifold, Pipe manifold,

connection to connection to wellswells

Drilling: trench systemDrilling: trench system Create Create

Reverse Return Reverse Return Circuits to Circuits to Balance Balance PressurePressureHorseshoe RR Circuit,

Single Vault Arrangement

Straight RR Circuit, Singe Vault

Drilling: trench systemDrilling: trench systemUnderground Underground

VaultVault

Drilling: trench systemDrilling: trench system

Pipe from Pipe from vault to vault to buildingbuilding

Drilling: trench systemDrilling: trench systemFlush and Flush and

PurgePurge

Building Construction: Building Construction: HVAC Licensed ContractorHVAC Licensed Contractor

Building Construction: Building Construction: HVAC inside the buildingHVAC inside the building

Ground to Building TransitionGround to Building Transition

Building Construction: Building Construction: HVAC inside the buildingHVAC inside the building

Base Base mounted VFD mounted VFD

pumpspumps

Building Construction: Building Construction: HVAC inside the buildingHVAC inside the building

Make-up WaterMake-up Water

Building Construction: Building Construction: HVAC inside the buildingHVAC inside the building

Air SeparatorAir Separator

Building Construction: Building Construction: HVAC inside the buildingHVAC inside the building

Expansion TankExpansion Tank

HVAC UNITS: HVAC UNITS:

Vibration Vibration IsolationIsolation

HVAC UNITS: HVAC UNITS:

ThermostatThermostat

HVAC UNITS: HVAC UNITS:

Differential Pressure Differential Pressure Sensor (DPS)Sensor (DPS)

HVAC UNITSHVAC UNITS

18 MANUFACTURERS18 MANUFACTURERS– AMERICAN AMERICAN

REFRIGERATION REFRIGERATION INSTITUTE (ARI) 330 INSTITUTE (ARI) 330 OR NEW ISO OR NEW ISO STANDARD 13256-1 STANDARD 13256-1 FOR CLOSED LOOP FOR CLOSED LOOP GEOTHERMAL UNITSGEOTHERMAL UNITS

–DESUPERHEATERSDESUPERHEATERS

Tips and AdviceTips and Advice

SYSTEM SYSTEM PUMPSPUMPS

CONTRACTORSCONTRACTORS

Tips and AdviceTips and AdviceOTHER CONSIDERATIONSOTHER CONSIDERATIONS

– ENVIRONMENTAL ENVIRONMENTAL EFFECTSEFFECTS

Tips and AdviceTips and Advice

•LAWSLAWS

•HAZARDHAZARDSS

Tips and AdviceTips and Advice ““RULES OF THUMB”RULES OF THUMB”

– 300’ OF BOREHOLE = 300’ OF BOREHOLE = APPROXIMATELY 1.5 to 2 APPROXIMATELY 1.5 to 2 TONS DEPENDING ON TONS DEPENDING ON SUBSURFACE FORMATIONSUBSURFACE FORMATION

– WELL FIELD INSTALLED WELL FIELD INSTALLED COST: $12.00 TO $15.00 COST: $12.00 TO $15.00 PER LINEAR FOOT OF PER LINEAR FOOT OF BOREHOLEBOREHOLE

Tips and AdviceTips and Advice ““RULES OF THUMB”RULES OF THUMB”

DOOR PRIZEDOOR PRIZE