Water-Source Heat Pump Basics
Water-to-Air
HEATING POSITION
CONDENSER (HEAT ING)
EVAPORAT OR (COOLING)
AIR
COIL
AIR
HANDLER
SECTION
REFRIG FLOW - HEATING
COOLING POSITION
REFRIG FLOW - COOLING
COM PRESSOR SECTION
REVERSING
VALVE
SUCTION
CONDENSER (COOLING)
EVAPORATOR (HEATING)
COMPRESSOR
EXPANSION
VALVE
FILTER
DRIER
COAX
DISCHARGE
HWG
FP2:
HEATING
LIQUID
LINE
FP1:
COOLING
LIQUID
LINE
Water-to-Air Heating
CONDENSER (HEAT ING)
21C
AIR
COIL
AIR
HANDLER
SECTION
REFRIG FLOW - HEATING
COM PRESSOR SECTION
REVERSING
VALVE
8 bar
SUCTION
EVAPORATOR (HEATING)
COMPRESSOR
38C
EXPANSION
VALVE
23 bar
COAX
FILTER
DRIER
DISCHARGE
HWG
FP2:
HEATING
LIQUID
LINE
10C
7C
48C
54C
Water-to-Water Heating
REFRIG FLOW - HEATING
38C
COAX
45C
REVERSING
VALVE
CONDENSER (HEAT ING)
8 bar
SUCTION
EVAPORATOR (HEATING)
COMPRESSOR
EXPANSION
VALVE
FP2:
HEATING
LIQUID
LINE
23 bar
COAX
FILTER
DRIER
10C
DISCHARGE
7C
Water-to-Air Cooling
REFRIG FLOW - COOLING
EVAPORAT OR (COOLING)
24C
AIR
COIL
AIR
HANDLER
SECTION
REVERSING
VALVE
10 bar
SUCTION
CONDENSER (COOLING)
COMPRESSOR
13C
EXPANSION
VALVE
FILTER
DRIER
23 bar
COAX
DISCHARGE
HWG
FP1:
COOLING
LIQUID
LINE
32C
37C
48C 54C
Water-to-Water Cooling
REFRIG FLOW - COOLING
10C
COAX
4C
REVERSING
VALVE
EVAPORAT OR (COOLING)
10 bar
SUCTION
CONDENSER (COOLING)
COMPRESSOR
EXPANSION
VALVE
FILTER
DRIER
FP1:
COOLING
LIQUID
LINE
23 bar
COAX
32C
DISCHARGE
37C
Cold Weather
Warm Weather
Moderate Weather
Cold Weather with Interior Loads
Owner Advantages of utilizing
WSHPs versus other systems
• Ultimate in occupant
comfort
• Ultimate in
Redundancy
• Long Service Life
• Lower service and
maintenance costs
• Very efficient cooling
and heating
– One of the highest
efficiency system
available
• Low installed cost
• Best value in benefits
Water Source Heat Pumps
are excellent for . . .
 Office Buildings
 Educational Facilities
 Retail Outlets & Dry Goods
 Hotel/Motel
 Restaurants
 Health Care/Assisted Living
 Government Buildings
 Homes
How
WSHPs?
Boiler/Tower
Systems
Ground-Source
(Geothermal)
What is Geothermal?
• Ground Source (Geothermal, Ground
Loop Heat Pump or GeoExchange) Two types . . .
– Ground Water - open loop/well water
• Direct water use
– Ground Coupled - closed loop
• Vertical earth loop
• Horizontal earth loop
• Surface water
Open Loop Systems
Vertical Loop System
Surface Water (Lake/Pond)
Loop System
Horizontal Loop System
(Slinky shown)
Hybrid Systems
 Ground Loop/Tower
 Ground Loop/Aquifer
– Auxiliary Geothermal Heat
Sink
 Benefits:
– Off Peak Operation
– Lower First Cost
Geothermal
System Design
What resources are available?
Geothermal Resources
• ClimateMaster Application Materials
• eQUEST Modeling Software
(commercial)
• GeoDesigner Modeling Software
(residential)
• Industry Publications (e.g. ASHRAE)
• ClimateMaster Experience
Questions?