Impacts of static pressure reset on VAV system air leakage, fan power, and thermal energy.(variable air volume)(Report): An article from: ASHRAE Transactions

This digital document is an article from ASHRAE Transactions, published by American Society of Heating, Refrigerating, and Air-Conditioning Engineers, Inc. on January 1, 2010. The length of the article is 5219 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available immediately after purchase. You can view it with any web browser.

From the author: As for a variable air volume (VAV) system, the supply fan speed typically modulate to maintain a duct static pressure setpoint. Traditionally, this setpoint is a constant based on system characteristics at design condition and the pressure sensor location. The static pressure is the summation of the duct pressure loss downstream of the sensor and box inlet static pressure. Under partial load conditions, the pressure loss in the duct is much less than the design value due to reduced airflow. Thus, the static pressure set point can be reset lower. This can reduce fan power, avoid noise at terminal box dampers and prevent box damper malfunction due to excessive pressure. This paper develops theoretical models to demonstrate the impacts of static pressure reset on air leakage, fan power and thermal energy for both pressure independent and pressure dependent terminal boxes.

Citation Details
Title: Impacts of static pressure reset on VAV system air leakage, fan power, and thermal energy.(variable air volume)(Report)
Author: Mingsheng Liu
Publication:ASHRAE Transactions (Magazine/Journal)
Date: January 1, 2010
Publisher: American Society of Heating, Refrigerating, and Air-Conditioning Engineers, Inc.
Volume: 116 Issue: 1 Page: 428(9)

Article Type: Report

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