Ventilation air, the economy cycle, and VAV

Journal Article · Sat Oct 01 04:00:00 EDT 1994 · Heating, Piping and Air Conditioning; (United States)

OSTI ID:6829442

Haines, R W

This article describes a simple yet effective method of providing both minimum and economy cycle control of outside air with a VAV system. Like most of the people in the HVAC industry, the author has been aware that there are problems with ventilation air and economy cycle outside air control when variable air volume (VAV) systems are used. It seemed obvious that the simple solution was to use an injection fan in the outside air intake to provide the minimum ventilation requirement under any operating condition of the VAV system and--presto--the problem would be solved. Recently the author was asked to prepare a seminar on HVAC controls for one of the ASHRAE chapters, with special emphasis on VAV systems. This forced him to take a careful look at the situation, and in the ensuing analysis, it became apparent that the previous look at the problem had not discovered the simplest and perhaps best solution.

• OSTI ID: 6829442
• Journal Information: Heating, Piping and Air Conditioning; (United States), Journal Name: Heating, Piping and Air Conditioning; (United States) Vol. 66:10; ISSN HPAOAM; ISSN 0017-940X
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320106* -- Energy Conservation
Consumption
& Utilization-- Building Equipment-- (1987-)
AIR FLOW
AIR QUALITY
BUILDINGS
ENVIRONMENTAL QUALITY
FLUID FLOW
GAS FLOW
VENTILATION
VENTILATION SYSTEMS