The ventilation rate procedure is the most commonly used procedure. * The zone is not served by heating or cooling equipment Section 6.4 and the openings cannot be closed during periods of * The natural ventilation system complies with the requirements in * The engineered natural ventilation system is approved by the Supplement natural ventilation systems are: The exeptions where mechanical ventilation is not required to Systems can be found in Strategy 8.4 of the recently published IndoorĪir Quality Guide - Best Practices for Design, Construction, and Mechanical ventilation to supplement natural ventilation should be the The requirement for mechanical ventilation in ASHRAE Standard 62.2-2007.Īs mixed mode or hybrid ventilation systems become more attractiveĭesign options, the standard was updated to reflect that using Natural ventilation systems shall include mechanical ventilation systems Section 5 (Systems and Equipment) and a new section 6.4 was written. Natural ventilation requirements were removed from The natural ventilation procedure is established in 62.1-2010 Rate procedure (VRP) and the indoor air quality procedure (IAQP). TheĪpproaches are now the natural ventilation procedure, the ventilation In the 1981 version the filtrationĬredit was incorporated into a new indoor air quality procedure. Mechanical ventilation and exhaust, and credit was given for advancedįiltration in the 1973 version. The standard recognized the use of natural ventilation, There was an allowance for different methods of providing for indoor air This paper is to explain some of the changes that occurred and documentįrom the initial publication of ASHRAE's ventilation standard, While the ventilation rates did not change markedly between 2007 andĢ010, there are significant changes in the procedures. Ventilation rates in the 1981, 1989, and 2004 versions of the standard. Standard 62.1 Ventilation for Acceptable Indoor Air Quality was Separation of the low-rise residential provisions into new standardĦ2.2. The standard number was revised flora 62 to 62.1 to allow for Standard is revised continually and by policy is republished every three The standard was placed onĬontinuous maintenance in 1997. Retrieved from ĪSHRAE Standard 62 was first published in 1973. APA style: New requirements of ASHRAE standard 62.1-2010.New requirements of ASHRAE standard 62.1-2010." Retrieved from 2010 American Society of Heating, Refrigerating, and Air-Conditioning Engineers, Inc. MLA style: "New requirements of ASHRAE standard 62.1-2010." The Free Library.
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