ASHRAE standards

ASHRAE standards

Interr.ational n e w s No u velles in terna tionales ASHRAE standards A revised standard to provide test methods for determining the thermal performan...

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Interr.ational n e w s No u velles in terna tionales ASHRAE standards A revised standard to provide test methods for determining the thermal performance of solar energy collectors has been published by the American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE). Standard 931986, 'Methods of Testing to Determine the Thermal Performance of Solar Collectors', provides a procedure whereby solar energy collectors can be tested, both indoors and outdoors, to rate the collectors in accordance with their thermal performance. The standard also determines the time constant and variation of collector efficiency with changes in the angle of incidence between the sun's direct rays and the normal to the collector aperture. Several significant changes to Standard 93-1977 have been made to produce the new standard. The alterations were introduced to reduce the experimental uncertainties. Specifications for the instrumentation have been upgraded, especially those for solar irradiance measurements. ASHRAE Standard 93-1986 carefully defines its applicability to both liquid-cooled non-concentrating and concentrating collectors and collectors that use air as the heat transfer fluid. The

standard has been recognized as an American National Standard by the American National Standards Institute. Copies are available from the address given below (price US$18 or US$12 for ASHRAE members). ASHRAE Publication Sales, 1791 Tullie Circle, NE, Atlanta, GA 30329, USA.

Far East conference on air conditioning in hot climates The American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) has announced a conference on air conditioning in hot climates. The conference will be held at the Hyatt Regency in Singapore, 3-5 September 1987. Papers presented will explore the effect of temperature and humidity on building envelope and systems components, ventilating and air conditioning systems and components, energy utilization, ventilation, human response, and other factors of special concern in hot climates. The technical programme is

expected to include presentations on energy consumption estimation, solar shading performance, the effect of moisture on heat flow through external walls, improvement in thermal performance using water evaporation and selective radiation, energy saving system design for air conditioning, low temperature air and cool storage, the utilization of thermal and geometric modelling in the design of environmental systems, cooling research for hot and humid climates, economic comfort cooling, the influence of glazing selection on commercial building energy performance, thermal comfort requirements, passive humidity control, computer simulation of natural ventilation cooling, microcomputer and diagnostic instrumentations applications for commercial building energy audits, interstitial condensation, the measurement of attic radiant barrier performance, computer-based instrumentation and energy analysis, and tropical air conditioning with low energy consumption and high quality. Registration for the conference is US$150. This includes admittance to all sessions, conference proceedings, welcome reception, lunches and one dinner. For details of registration please contact the address below. ASHRAE, 1791 Tullie Circle, NE, Atlanta, GA 30329, USA.

Rev. Int. Froid 1987 Vol 10 Septembre

311