Freeze protection valve and system
Patent
·
OSTI ID:5863082
The present invention is a device for a solar heating system having a solar collector, a storage tank connected to the solar collector, a pump for circulating liquid from the tank to the solar collector, a supply of liquid at a temperature above freezing and a connection from the supply of liquid to the solar collector for replacing any liquid lost from said solar collector. The device comprises a sensor for sensing the temperature of liquid in the solar collector, and a valve for bleeding liquid from the solar collector when the sensed temperature falls below a predetermined minimum whereby cool liquid in the solar collector is automatically replaced by liquid at a temperature above freezing.
- Assignee:
- Pulstar Corp.
- Patent Number(s):
- US 4557252
- OSTI ID:
- 5863082
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
14 SOLAR ENERGY
140901* -- Solar Thermal Utilization-- Space Heating & Cooling
CONTROL EQUIPMENT
DESIGN
ENERGY SYSTEMS
EQUIPMENT
EQUIPMENT PROTECTION DEVICES
FLOW REGULATORS
FLUIDS
FREEZE PROTECTION
HEAT TRANSFER FLUIDS
HEATING SYSTEMS
MONITORING
SOLAR COLLECTORS
SOLAR EQUIPMENT
SOLAR HEATING SYSTEMS
TEMPERATURE MONITORING
THERMOSTATS
VALVES
140901* -- Solar Thermal Utilization-- Space Heating & Cooling
CONTROL EQUIPMENT
DESIGN
ENERGY SYSTEMS
EQUIPMENT
EQUIPMENT PROTECTION DEVICES
FLOW REGULATORS
FLUIDS
FREEZE PROTECTION
HEAT TRANSFER FLUIDS
HEATING SYSTEMS
MONITORING
SOLAR COLLECTORS
SOLAR EQUIPMENT
SOLAR HEATING SYSTEMS
TEMPERATURE MONITORING
THERMOSTATS
VALVES