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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