Cool pool development. Quarterly technical report No. 1, April-June 1979

Technical Report · Mon Oct 15 00:00:00 EDT 1979

DOI:https://doi.org/10.2172/5511285· OSTI ID:5511285

Crowther, K.

The Cool Pool is a passive cooling system consisting of a shaded, evaporating roof pond which thermosiphons cool water into water-filled, metal columns (culvert pipes) located within the building living space. The water in the roof pond is cooled by evaporation, convection and radiation. Because the water in the pool and downcomer is colder and denser than the water in the column a pressure difference is created and the cold water flows from the pool, through the downcomer and into the bottom of the column. The warm column water rises and flows through a connecting pipe into the pool. It is then cooled and the cycle repeats itself. The system requires no pumps. The water column absorbs heat from the building interior primarily by convection and radiation. Since the column is radiating at a significantly lower temperature than the interior walls it plays a double role in human comfort. Not only does it cool the air by convection but it provides a heat sink to which people can radiate. Since thermal radiation is important to the cooling of people, the cold water column contributes substantially to their feelings of comfort. Research on the Cool Pool system includes the following major tasks: control of biological organisms and debris in the roof pond and water cylinders; development of a heat exchanger; experimental investigation of the system's thermal performance; and development of a predictive computer simulation of the Cool Pool. Progress in these tasks is reported.

• Research Organization: Living Systems, Winters, CA (USA)
• DOE Contract Number: EG-77-G-04-4153
• OSTI ID: 5511285
• Report Number(s): DOE/CS/34153-1
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
14 SOLAR ENERGY
BUILDINGS
PASSIVE SOLAR COOLING SYSTEMS
THERMOSYPHON EFFECT
ROOF PONDS
DESIGN
EVAPORATIVE COOLING
OPERATION
RESEARCH PROGRAMS
WATER
CONVECTION
COOLING
EQUIPMENT
HEATING SYSTEMS
HYDROGEN COMPOUNDS
OXYGEN COMPOUNDS
PASSIVE SOLAR HEATING SYSTEMS
PONDS
SOLAR COLLECTORS
SOLAR COOLING SYSTEMS
SOLAR EQUIPMENT
SOLAR HEATING SYSTEMS
SOLAR PONDS
320100* - Energy Conservation
Consumption
& Utilization- Buildings
140901 - Solar Thermal Utilization- Space Heating & Cooling