Jet operated heat pump

Patent · Tue Mar 30 00:00:00 EST 1982

OSTI ID:5409332

Collard, T H

A jet pump system is shown that utilizes waste heat to provide heating and/or cooling. Waste heat diverted through a boiler causes a refrigerant to evaporate and expand for supersonic discharge through a nozzle thereby creating a vacuum in an evaporator coil. The vacuum draws the refrigerant in a gaseous state into a condensing section of a jet pump along with refrigerant from a reservoir in a subcooled liquid form. This causes condensation of the gas in a condensation section of the jet pump, while moving at constant velocity. The change in momentum of the fluid overcomes the system high side pressure. Some of the condensate is cooled by a subcooler. Refrigerant in a subcooled liquid state from the subcooler is fed back into the evaporator and the condensing section with an adequate supply being insured by the reservoir. The motive portion of the condensate is returned to the boiler sans subcooling. By proper valving start-up is insured, as well as the ability to switch from heating to cooling.

• Assignee: EDB-82-115200
• Patent Number(s): US 4321801
• Application Number: TRN: 82-013613
• OSTI ID: 5409332
• Resource Relation: Patent File Date: Filed date 26 Jan 1981; Other Information: PAT-APPL-228338
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
HEAT PUMPS
DESIGN
WASTE HEAT UTILIZATION
BOILERS
COOLING SYSTEMS
EVAPORATION
EVAPORATORS
HEATING SYSTEMS
JETS
NOZZLES
OPERATION
REFRIGERANTS
TUBES
VALVES
VAPOR CONDENSATION
CONTROL EQUIPMENT
ENERGY SYSTEMS
EQUIPMENT
FLOW REGULATORS
FLUIDS
PHASE TRANSFORMATIONS
WASTE PRODUCT UTILIZATION
WORKING FLUIDS
420200* - Engineering- Facilities
Equipment
& Techniques