Integrated desiccant cold air distribution system

Conference · Sun Jan 01 04:00:00 EST 1989 · ASHRAE Transactions (American Society of Heating, Refrigerating and Air-Conditioning Engineers); (USA)

OSTI ID:5783202

Meckler, M ^[1]

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1. Meckler Group, Encino, CA (US)

Strong design trends toward the use of cold air distribution systems, which generally operate with owe supply air temperatures (i.e., 40{degrees}F to 45{degrees}F), provide unique opportunities to enhance the cost effectiveness of physically integrated desiccant and evaporation cooling and air-handling components of variable-air-volume (VAV) systems. With higher outdoor ventilation rates required by the proposed ASHRAE Standard 62-1981R, a higher premium cost is incurred for refrigerating this air to a 40{degrees}F or 45{degrees}F supply air temperature if cooled by conventional air-conditioning methods. The newly developed integrated desiccant cold air distribution methods. The newly developed integrated desiccant cold air distribution (IDCAD) system can work with a variety of conventional or advanced direct gas-fired desiccant regeneration developments expected to be commercially available in the near future. The IDCAD air-handling unit employs three supply fans: one for the hot deck and two for each cold deck, thereby allowing for separation of ventilation rates for both exterior and interior occupied zones. This design feature allows for significant reductions in the amount of building return air in ductwork while permitting low containment space levels than conventionally designed VAV systems within separately served interior and exterior occupied building spaces.

• OSTI ID: 5783202
• Report Number(s): CONF-890609--
• Conference Information: Journal Name: ASHRAE Transactions (American Society of Heating, Refrigerating and Air-Conditioning Engineers); (USA) Journal Volume: 95, Part 2
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320106* -- Energy Conservation
Consumption
& Utilization-- Building Equipment-- (1987-)
320107 -- Energy Conservation
Consumption
& Utilization-- Building Systems-- (1987-)
AIR CONDITIONERS
AIR CONDITIONING
AIR FLOW
AIR QUALITY
DESICCANTS
DESIGN
EFFICIENCY
ENVIRONMENTAL QUALITY
FLUID FLOW
GAS FLOW
THERMAL EFFICIENCY
VENTILATION