Experimental measurement and uncertainty analysis on the energy performance of a chilled water cooling coil.(Report): An article from: ASHRAE Transactions
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ISBN / ASINB003AVK7QS
ISBN-13978B003AVK7Q2
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This digital document is an article from ASHRAE Transactions, published by American Society of Heating, Refrigerating, and Air-Conditioning Engineers, Inc. on July 1, 2009. The length of the article is 6245 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: In this study, an energy balance and uncertainty analysis was performed on a standard chilled water cooling coil mounted in a commercial Air Handling Unit operating under typical conditions with a conventional PID loop control. Two different sets of relative humidity transmitters and temperature sensors (high and low accuracy) were evaluated for measuring relative humidity and temperature of the moist air entering and exiting a cooling coil. The impact of the different errors in these sensors and installation on the uncertainty in the energy calculation is presented. In addition, the affects of the transient behavior inherent in the cooling coil with respect to the energy balance was evaluated. This study gives insight to how an energy balance test coupled with an uncertainty analysis could be used to verify the cooling coil system performance and instrumentation output. Experimental results showed that the transient behavior inherent to the cooling coil had a negligible affect on the energy balance calculations and that by employing high accuracy instrumentation and careful installation, expected energy balance results could be attained.
Citation Details
Title: Experimental measurement and uncertainty analysis on the energy performance of a chilled water cooling coil.(Report)
Author: Ryan D. Warren
Publication:ASHRAE Transactions (Magazine/Journal)
Date: July 1, 2009
Publisher: American Society of Heating, Refrigerating, and Air-Conditioning Engineers, Inc.
Volume: 115 Issue: 2 Page: 676(13)
Article Type: Report
Distributed by Gale, a part of Cengage Learning
From the author: In this study, an energy balance and uncertainty analysis was performed on a standard chilled water cooling coil mounted in a commercial Air Handling Unit operating under typical conditions with a conventional PID loop control. Two different sets of relative humidity transmitters and temperature sensors (high and low accuracy) were evaluated for measuring relative humidity and temperature of the moist air entering and exiting a cooling coil. The impact of the different errors in these sensors and installation on the uncertainty in the energy calculation is presented. In addition, the affects of the transient behavior inherent in the cooling coil with respect to the energy balance was evaluated. This study gives insight to how an energy balance test coupled with an uncertainty analysis could be used to verify the cooling coil system performance and instrumentation output. Experimental results showed that the transient behavior inherent to the cooling coil had a negligible affect on the energy balance calculations and that by employing high accuracy instrumentation and careful installation, expected energy balance results could be attained.
Citation Details
Title: Experimental measurement and uncertainty analysis on the energy performance of a chilled water cooling coil.(Report)
Author: Ryan D. Warren
Publication:ASHRAE Transactions (Magazine/Journal)
Date: July 1, 2009
Publisher: American Society of Heating, Refrigerating, and Air-Conditioning Engineers, Inc.
Volume: 115 Issue: 2 Page: 676(13)
Article Type: Report
Distributed by Gale, a part of Cengage Learning
