Solar heating system

Patent · Tue Jul 20 00:00:00 EDT 1982

OSTI ID:6980496

Molivadas, S

Various systems are disclosed for absorbing radiant heat, especially solar heat, by evaporating a refrigerant, and for releasing the heat thus absorbed to a medium to be heated, by condensing the evaporated portion of the refrigerant. The refrigerant fluid loop includes (1) an evaporator, or solar collector, including passageways where at least a portion of the refrigerant is vaporized, (2) a separator which may be a part of or a separate component from the evaporator, that divides the vapor portion and the liquid portion of the refrigerant exiting the evaporator passageways, (3) a condenser for condensing the vapor portion of the refrigerant and transferring the latent heat released to a medium to be heated, and (4) a condensate pump to return the liquid refrigerant from the separator and condenser to the evaporator. Systems are also disclosed for returning the liquid refrigerant to the evaporator by gravity thus eliminating the need for a condensate pump. Controls and component arrangements are shown for maintaining the temperature of evaporation of the refrigerant automatically insofar as practical just above that of the medium to be heated, independently of changes in the temperature of the medium, the temperatures of the system's surroundings, and the intensity of radiation intercepted by the system. Also disclosed are novel solar collector designs applicable to the invented systems.

• Assignee: EDB-83-015285
• Patent Number(s): US 4340030
• OSTI ID: 6980496
• Resource Relation: Patent File Date: Filed date 5 May 1978; Other Information: PAT-APPL-902950
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
42 ENGINEERING
SOLAR HEATING SYSTEMS
DESIGN
RANKINE CYCLE POWER SYSTEMS
CONTROL EQUIPMENT
EVAPORATION
REFRIGERANTS
SOLAR ABSORBERS
SOLAR COLLECTORS
SOLAR RADIATION
WORKING FLUIDS
ENERGY SYSTEMS
EQUIPMENT
FLUIDS
HEATING SYSTEMS
PHASE TRANSFORMATIONS
POWER SYSTEMS
RADIATIONS
SOLAR EQUIPMENT
STELLAR RADIATION
140901* - Solar Thermal Utilization- Space Heating & Cooling
141000 - Solar Collectors & Concentrators
425002 - Engineering- Power Cycles- Rankine- (1980-)