Low temperature air with high IAQ for tropical climates

Journal Article · Mon Mar 01 00:00:00 EST 1993 · ASHRAE Journal (American Society of Heating, Refrigerating and Air-Conditioning Engineers); (United States)

OSTI ID:5966738

Scofield, C M

This article describes how a heat pipe precooler can greatly reduce ventilation cooling loads for low temperature supply air systems in tropical climates. Interest increases daily in the application of low temperature supply air to HVAC systems. For example, the cover photograph of the March 1991 ASHRAE Journal featured the 34-story Taipei World Trade Center office building. The low temperature thermal storage system designed for this building was awarded first place in the commercial buildings category for the new ASHRAE Technology Awards. There are many compelling arguments for the low temperature thermal storage concept, particularly when it is coupled with a VAV fan system: Substantial savings in building construction cost through reduction of overall structure height brought about by shrinkage in supply air ductwork. Significant increase in the rentable floor space through reduction of mechanical room and duct chase area. Reduced HVAC construction costs because ducts, fans, coils, filters and all components associated with the airside system can be downsized by 40% to 50%. Savings of fan energy when compared to conventional all-air VAV systems at 55F (13C) supply air temperatures. Reduced fan sound levels, requiring less sound and vibration treatment to achieve acceptable noise levels in occupied areas. Increased indoor comfort in humid climates because the lower indoor relative humidity allows space thermostats to be set higher than usual.

• OSTI ID: 5966738
• Journal Information: ASHRAE Journal (American Society of Heating, Refrigerating and Air-Conditioning Engineers); (United States), Vol. 35:3; ISSN 0001-2491
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
AIR CONDITIONERS
ENERGY EFFICIENCY
VENTILATION SYSTEMS
AIR QUALITY
HEAT PIPES
HUMIDITY
INDOOR AIR POLLUTION
TROPICAL REGIONS
AIR POLLUTION
EFFICIENCY
ENVIRONMENTAL QUALITY
POLLUTION
320106* - Energy Conservation
Consumption
& Utilization- Building Equipment- (1987-)
320107 - Energy Conservation
Consumption
& Utilization- Building Systems- (1987-)