Roof pond cooling experiments using the passive test facility for warm, humid climates
Technical Report
·
OSTI ID:5353514
The warm humid climate Passive Test Facility at Trinity University in San Antonio, Texas has been used to investigate uncertainties in the heat transfer in passively cooled buildings. The two buildings were configured as modified roof pond systems, one with a wet surface and one with a dry surface. The major uncertainties addressed were the heat loss rates from wet and dry roof ponds and the heat transfer from a cooled ceiling with either natural convection or forced convection (ceiling fans). Experiments were also conducted to determine the temperature stratification in roof ponds and the ability of roof ponds to transfer heat laterally from localized sources of heat in the building. A description of the sensors and their installation is presented together with the configuration employed for each experiment. Results are presented in the form of graphs of selected data which are applicable to each of the major uncertainties. A preliminary analysis of the data has been performed and the results are presented. Convective heat transfer coefficients for the ceiling have been determined for different air speeds. A rule of thumb for the cooling performance of dry roof ponds has been produced and used to develop a feasibility criterion for such systems.
- Research Organization:
- Trinity Univ., San Antonio, TX (USA)
- DOE Contract Number:
- AC03-79CS30201
- OSTI ID:
- 5353514
- Report Number(s):
- DOE/CS/30201-T7; ON: DE82008268
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
14 SOLAR ENERGY
140901* -- Solar Thermal Utilization-- Space Heating & Cooling
AMBIENT TEMPERATURE
BLOWERS
CALIBRATION
COMPUTER CODES
CONVECTION
DATA
DATA ACQUISITION SYSTEMS
DESIGN
ENERGY LOSSES
ENERGY SYSTEMS
ENERGY TRANSFER
EQUIPMENT
EXPERIMENTAL DATA
FORCED CONVECTION
HEAT FLUX
HEAT LOSSES
HEAT METERS
HEAT TRANSFER
HEATING SYSTEMS
INFORMATION
LIMITING VALUES
LOSSES
MEASURING INSTRUMENTS
METERS
NATURAL CONVECTION
NUMERICAL DATA
PASSIVE SOLAR COOLING SYSTEMS
PASSIVE SOLAR HEATING SYSTEMS
PERFORMANCE TESTING
PONDS
ROOF PONDS
SOLAR COLLECTORS
SOLAR COOLING SYSTEMS
SOLAR EQUIPMENT
SOLAR HEATING SYSTEMS
SOLAR PONDS
STRATIFICATION
SURFACE WATERS
TEMPERATURE DISTRIBUTION
TESTING
WIND
140901* -- Solar Thermal Utilization-- Space Heating & Cooling
AMBIENT TEMPERATURE
BLOWERS
CALIBRATION
COMPUTER CODES
CONVECTION
DATA
DATA ACQUISITION SYSTEMS
DESIGN
ENERGY LOSSES
ENERGY SYSTEMS
ENERGY TRANSFER
EQUIPMENT
EXPERIMENTAL DATA
FORCED CONVECTION
HEAT FLUX
HEAT LOSSES
HEAT METERS
HEAT TRANSFER
HEATING SYSTEMS
INFORMATION
LIMITING VALUES
LOSSES
MEASURING INSTRUMENTS
METERS
NATURAL CONVECTION
NUMERICAL DATA
PASSIVE SOLAR COOLING SYSTEMS
PASSIVE SOLAR HEATING SYSTEMS
PERFORMANCE TESTING
PONDS
ROOF PONDS
SOLAR COLLECTORS
SOLAR COOLING SYSTEMS
SOLAR EQUIPMENT
SOLAR HEATING SYSTEMS
SOLAR PONDS
STRATIFICATION
SURFACE WATERS
TEMPERATURE DISTRIBUTION
TESTING
WIND