这是对ANSI/ASHRAE标准78-1985的重申，该标准在1997年和2003年得到了重申。本标准由美国采暖、制冷和空调工程师协会（ASHRAE）主持编制。协会或政府机构可以全部或部分使用该软件，并向ASHRAE提供适当的信贷。严格遵守是在自愿的基础上进行的，只是为了在整个行业内获得统一的标准。本标准旨在提供一种测量制冷剂吸入管路过滤器和过滤器干燥器流量的方法。为2007年的重申所做的更改是对参考书目的更新。本标准规定了测量制冷剂吸入管路过滤器和过滤器流量的方法- 烘干机。本试验方法适用于密封式和可更换元件式吸入管过滤器以及所有类型的过滤器干燥器。该测试方法基于使用空气作为测试介质，并计算各种应用条件下制冷剂气体流量的结果。

This is a reaffirmation of ANSI/ASHRAE Standard 78- 1985, which was reaffirmed in 1997 and 2003. This standard was prepared under the auspices of the American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE). It may be used, in whole or in part, by an association or government agency with due credit to ASHRAE. Adherence is strictly on a voluntary basis and merely in the interests of obtaining uniform standards throughout the industry.This standard is intended to provide a method for measuring the flow capacity of refrigerant suction line filters and filter- driers. The changes made for the 2007 reaffirmation were updates to the Bibliography.This standard establishes a method for measuring the flow capacity of refrigerant suction line filters and filter-driers.This test method is intended for use on both sealed and replaceable element type suction line filters and filter-driers of all types.The test method is based on using air as the testing medium and calculating the results to refrigerant gas flow under various application conditions.