Energy implications of filtration in residential and light-commercial buildings.(Report): An article from: ASHRAE Transactions
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ISBN / ASINB003QN3ZPU
ISBN-13978B003QN3ZP0
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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 January 1, 2010. The length of the article is 9967 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: Higher-efficiency HVAC filters generally have a higher pressure drop and are widely assumed to increase energy consumption in smaller air conditioning systems. To explore the effects of filters in real buildings, we monitored 17 residential and light-commercial forced air cooling systems in Austin, TX. Measurements were made once per month for one year at each site with filters from three different MERV range categories. Measured parameters included system airflow, fan power draw, outdoor unit power draw, cooling capacity, pressure drops across filters and coils, and duct leakage. Higher-efficiency (MERV 11-12) filters generally had a small impact on parameters related to cooling energy consumption in the residential and light-commercial test systems when compared to lower-efficiency (MERV 2) filters. The median energy consequence of higher-efficiency filtration in the test systems was estimated as a decrease of approximately 16 kWh per ton of nominal capacity (4.6 kWh per kW) per month of cooling season operation, albeit with large variation, with most of these small savings coming from fan energy reductions. These results suggest a weak link between higher-efficiency filters and energy use in residential and light-commercial systems and that other factors should govern filter selection.
Citation Details
Title: Energy implications of filtration in residential and light-commercial buildings.(Report)
Author: Brent Stephens
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: 346(12)
Article Type: Report
Distributed by Gale, a part of Cengage Learning
From the author: Higher-efficiency HVAC filters generally have a higher pressure drop and are widely assumed to increase energy consumption in smaller air conditioning systems. To explore the effects of filters in real buildings, we monitored 17 residential and light-commercial forced air cooling systems in Austin, TX. Measurements were made once per month for one year at each site with filters from three different MERV range categories. Measured parameters included system airflow, fan power draw, outdoor unit power draw, cooling capacity, pressure drops across filters and coils, and duct leakage. Higher-efficiency (MERV 11-12) filters generally had a small impact on parameters related to cooling energy consumption in the residential and light-commercial test systems when compared to lower-efficiency (MERV 2) filters. The median energy consequence of higher-efficiency filtration in the test systems was estimated as a decrease of approximately 16 kWh per ton of nominal capacity (4.6 kWh per kW) per month of cooling season operation, albeit with large variation, with most of these small savings coming from fan energy reductions. These results suggest a weak link between higher-efficiency filters and energy use in residential and light-commercial systems and that other factors should govern filter selection.
Citation Details
Title: Energy implications of filtration in residential and light-commercial buildings.(Report)
Author: Brent Stephens
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: 346(12)
Article Type: Report
Distributed by Gale, a part of Cengage Learning
