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Book Gravimetric and Dust spot Procedures for Testing Air cleaning Devices Used in General Ventilation for Removing Particulate Matter

Download or read book Gravimetric and Dust spot Procedures for Testing Air cleaning Devices Used in General Ventilation for Removing Particulate Matter written by American Society of Heating, Refrigerating and Air-Conditioning Engineers and published by . This book was released on 1992 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt: This standard establishes procedures to measure the ability of air-cleaning devices to remove dust as they become loaded with standard synthetic dust. The dust-removal performance is measured in two ways: first by the percentage of the weight of the synthetic dust captured by the filter (ASHRAE weight arrestance) and second by comparing the blackening of targets both upstream and downstream of the air-cleaning device using ambient atmospheric dust (ASHRAE dust-spot efficiency). The procedures in this standard do not measure the ability of the air cleaner to remove particles of specific diameters. This standard is not intended for testing air cleaners exhibiting ASHRAE dust-spot efficiencies of greater than 98%.

Book An American National Standard Gravimetric and Dust spot Procedures for Testing Air cleaning Devices Used in General Ventilation for Removing Particulate Matter

Download or read book An American National Standard Gravimetric and Dust spot Procedures for Testing Air cleaning Devices Used in General Ventilation for Removing Particulate Matter written by American Society of Heating, Refrigerating and Air-Conditioning Engineers and published by . This book was released on 1992 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Method of Testing Air cleaning Devices Used in General Ventilation for Removing Particulate Matter

Download or read book Method of Testing Air cleaning Devices Used in General Ventilation for Removing Particulate Matter written by American Society of Heating, Refrigerating and Air-Conditioning Engineers and published by . This book was released on 1976 with total page 31 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Method of Testing General Ventilation Air cleaning Devices for Removal Efficiency by Particle Size

Download or read book Method of Testing General Ventilation Air cleaning Devices for Removal Efficiency by Particle Size written by American Society of Heating, Refrigerating and Air-Conditioning Engineers and published by . This book was released on 2017 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Historically, standards for testing air cleaners have been developed in response to the needs of the times. Protection of machinery and coils came first, then reduction of soiling. Now concerns about indoor air quality and respirable particles, protection of products during manufacturing, and protection of HVAC equipment have prompted development of this test standard based on particle size ... This standard addresses two air-cleaner performance characteristics of importance to users: the ability of the device to remove particles from the airstream and its resistance to airflow ... A sample of air from a general ventilation system contains particles with a broad range of sizes having varied effects, sometimes dependent on particle size. Coarse particles, for example, cause energy waste when they cover heat transfer surfaces. Fine particles cause soiling and discoloration of interior surfaces and furnishings as well as possible health effects when inhaled by occupants of the space. When air cleaners are tested and reported for efficiency in accordance with this standard, there is a basis for comparison and selection for specific tasks. The test procedure uses laboratory-generated KCl particles dispersed into the airstream as the test aerosol. A particle counter measures and counts the particles in 12 size ranges, both upstream and downstream, for the efficiency determinations. This standard also delineates a method of loading the air cleaner with synthetic dust to simulate field conditions. A set of particle size removal efficiency (PSE) performance curves at incremental dust loading is developed and, together with an initial clean performance curve, is the basis of a composite curve representing the minimum performance in each size range. Points on the composite curve are averaged and the averages are then used to determine the minimum efficiency reporting value (MERV) of the air cleaner. Coarse air cleaners may be tested for particle size removal efficiency when they are clean, with results reported in the prescribed format. (An example of a coarse air cleaner is the so-called “furnace” filter, a flat panel with a cardboard frame and spun glass fiber media.) However, the standard also provides the basis for evaluation using the loading dust efficiency by weight, or “arrestance,” as well as an estimate of predicted life called “dust holding capacity.”--Foreword, page 2.

Book ANSI ASHRAE standard 52 2 2007

Download or read book ANSI ASHRAE standard 52 2 2007 written by and published by . This book was released on 2007 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Method of Testing Air cleaning Devices Used in General Ventilation for Removing Particulate Matter

Download or read book Method of Testing Air cleaning Devices Used in General Ventilation for Removing Particulate Matter written by American Society of Heating, Refrigerating and Air-Conditioning Engineers and published by . This book was released on 1976 with total page 31 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Index of Specifications and Standards

Download or read book Index of Specifications and Standards written by and published by . This book was released on 2005 with total page 810 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Method of Testing General Ventilation Air cleaning Devices for Removal Efficiency by Particle Size

Download or read book Method of Testing General Ventilation Air cleaning Devices for Removal Efficiency by Particle Size written by American Society of Heating, Refrigerating and Air-Conditioning Engineers and published by . This book was released on 2006 with total page 1 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book ANSI ASHRAE standard 145 1 2008

Download or read book ANSI ASHRAE standard 145 1 2008 written by and published by . This book was released on 2008 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book ANSI AIHA Z9 2 2006 Fundamentals Governing the Design and Operation of Local Exhaust Ventilation Systems

Download or read book ANSI AIHA Z9 2 2006 Fundamentals Governing the Design and Operation of Local Exhaust Ventilation Systems written by Aiha and published by AIHA. This book was released on 2007 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt: This new standard describes fundamental good practices related to the commissioning, design, selection, installation, operation, maintenance, and testing of local exhaust ventilation (LEV) systems used for the control of employee exposure to airborne contaminants.