Chemical off-gassing from indoor swimming pools.(Report): An article from: ASHRAE Transactions
Book Details
ISBN / ASINB00371OVKE
ISBN-13978B00371OVK7
MarketplaceFrance 🇫🇷
Description
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 3666 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 research focuses on measuring the off-gassing of disinfection by-products (DBP's) from chlorine-based pool water treatment, filtration and chemistry of an indoor test swimming pool, to provide the Mechanical System Designer with specification guidelines for improved air quality. Aqueous derived effluent from the mechanical dehumidification (MDH) system is analyzed for chloroform (a trihalomethane or THM), chloramines and pH using commercially available products. Pool vapor content and composition are determined by gas chromatography using standard NIOSH and OSHA analytical methods and includes preliminary nitrogen trichloride (trichloramine or TCA) measurement using published methods. Based on observation, this research confirms and highlights that nitrogen trichloride is the vapor (gas) that causes the most irritation and pool air containing TCA is essentially toxic over long term exposure. Tests conducted with top level ventilation and re-circulation rates confirmed the need to understand Henry's Law and the physical properties of TCA. When used in conjunction with deck (ground) level ventilation, low exhaust air movement at ASHRAE's current ventilation rate (0.5 cfm/[ft.sup.2]) can be successful in maintaining this heavier than air TCA gas at low levels within the indoor space.
Citation Details
Title: Chemical off-gassing from indoor swimming pools.(Report)
Author: Richard C. Cavestri
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: 502(11)
Article Type: Report
Distributed by Gale, a part of Cengage Learning
From the author: This research focuses on measuring the off-gassing of disinfection by-products (DBP's) from chlorine-based pool water treatment, filtration and chemistry of an indoor test swimming pool, to provide the Mechanical System Designer with specification guidelines for improved air quality. Aqueous derived effluent from the mechanical dehumidification (MDH) system is analyzed for chloroform (a trihalomethane or THM), chloramines and pH using commercially available products. Pool vapor content and composition are determined by gas chromatography using standard NIOSH and OSHA analytical methods and includes preliminary nitrogen trichloride (trichloramine or TCA) measurement using published methods. Based on observation, this research confirms and highlights that nitrogen trichloride is the vapor (gas) that causes the most irritation and pool air containing TCA is essentially toxic over long term exposure. Tests conducted with top level ventilation and re-circulation rates confirmed the need to understand Henry's Law and the physical properties of TCA. When used in conjunction with deck (ground) level ventilation, low exhaust air movement at ASHRAE's current ventilation rate (0.5 cfm/[ft.sup.2]) can be successful in maintaining this heavier than air TCA gas at low levels within the indoor space.
Citation Details
Title: Chemical off-gassing from indoor swimming pools.(Report)
Author: Richard C. Cavestri
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: 502(11)
Article Type: Report
Distributed by Gale, a part of Cengage Learning
