Solar heater

Patent · Tue Aug 11 04:00:00 EDT 1987

OSTI ID:5937325

Seidel, P

A thermosyphonic solar heater is described which consists of a solar collector for heating a liquid by solar radiation, the collector having an inlet socket and an outlet socket, a tank into which the heated liquid is transferred by thermosyphonic action, a hot-liquid, outlet pipe leading from the outlet socket to the top region of the tank and a cold-liquid, return pipe leading from the bottom region of the tank to the inlet socket. The hot-liquid pipe has a downwardly extending portion ending at, and opening into, the top region, and the cold return pipe having an upwardly extending portion beginning at, and open towards, the bottom region, and a downwardly extending portion, the upper end of the upwardly extending portion of the return pipe communicating with the upper end of the downwardly extending portion thereof. A proportion of the upwardly extending portion of the return pipe is in at least indirect thermal contact and heat exchange relationship with at least some of the liquid inside the downwardly extending portion of the hot-liquid pipe and inside the storage tank. The forward thermosyphonic circulation is produced when the collector is heated by solar radiation, but reverse circulation is substantially inhibited when the collector cools down in absence of solar radiation.

• Assignee: NOV; NOV-87-076109; EDB-87-168799
• Patent Number(s): US 4685445
• OSTI ID: 5937325
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
140901* -- Solar Thermal Utilization-- Space Heating & Cooling
141000 -- Solar Collectors & Concentrators
DESIGN
ENERGY SYSTEMS
ENERGY TRANSFER
EQUIPMENT
FLUID FLOW
FLUIDS
HEAT TRANSFER
HEAT TRANSFER FLUIDS
HEATING SYSTEMS
LIQUID FLOW
OPERATION
PIPES
SOLAR COLLECTORS
SOLAR EQUIPMENT
SOLAR HEATING SYSTEMS
THERMOSYPHONS