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Decomposition of formaldehyde by [TiO.sub.2] nanocatalyst filters in a heating ventilation air-conditioning system.(Report): An article from: ASHRAE Transactions
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ISBN / ASINB004SF5TVS
ISBN-13978B004SF5TV3
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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, 2010. The length of the article is 7206 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: This paper investigates the effectiveness of [TiO.sub.2] photo-catalytic oxidation of formaldehyde under different heating ventilation air conditioning (HVAC)-related air conditions. Formaldehyde, at a specific concentration, was injected into an enclosed HVAC test chamber, and circulated under UV irradiation though [TiO.sub.2] nanofilm-coated stainless steel air filter. After two hours of HVAC operation under preset temperature, relative humidity (RH), and air velocity conditions, the formaldehyde photocatalyst decomposition effectiveness was 65-87%. At constant RH and air velocity, photocatalysis increased with an increase in air temperature. At 40-60% RH, and constant temperature and air velocity, the photocatalytic degradation rates were 78-89%. Under constant temperature and RH conditions, and air velocities of 0.4-1.3 m/s (1.3-4.3 ft/s), the formaldehyde decomposition efficiency was 70-86%. Therefore, in a sealed system, when one or all of air temperature, RH, and air velocity are increased, the formaldehyde photodegradation rate will be increased.
Citation Details
Title: Decomposition of formaldehyde by [TiO.sub.2] nanocatalyst filters in a heating ventilation air-conditioning system.(Report)
Author: Ching-Song Jwo
Publication:ASHRAE Transactions (Magazine/Journal)
Date: July 1, 2010
Publisher: American Society of Heating, Refrigerating, and Air-Conditioning Engineers, Inc.
Volume: 116 Issue: 2 Page: 507(15)
Article Type: Report
Distributed by Gale, a part of Cengage Learning
From the author: This paper investigates the effectiveness of [TiO.sub.2] photo-catalytic oxidation of formaldehyde under different heating ventilation air conditioning (HVAC)-related air conditions. Formaldehyde, at a specific concentration, was injected into an enclosed HVAC test chamber, and circulated under UV irradiation though [TiO.sub.2] nanofilm-coated stainless steel air filter. After two hours of HVAC operation under preset temperature, relative humidity (RH), and air velocity conditions, the formaldehyde photocatalyst decomposition effectiveness was 65-87%. At constant RH and air velocity, photocatalysis increased with an increase in air temperature. At 40-60% RH, and constant temperature and air velocity, the photocatalytic degradation rates were 78-89%. Under constant temperature and RH conditions, and air velocities of 0.4-1.3 m/s (1.3-4.3 ft/s), the formaldehyde decomposition efficiency was 70-86%. Therefore, in a sealed system, when one or all of air temperature, RH, and air velocity are increased, the formaldehyde photodegradation rate will be increased.
Citation Details
Title: Decomposition of formaldehyde by [TiO.sub.2] nanocatalyst filters in a heating ventilation air-conditioning system.(Report)
Author: Ching-Song Jwo
Publication:ASHRAE Transactions (Magazine/Journal)
Date: July 1, 2010
Publisher: American Society of Heating, Refrigerating, and Air-Conditioning Engineers, Inc.
Volume: 116 Issue: 2 Page: 507(15)
Article Type: Report
Distributed by Gale, a part of Cengage Learning
