ASHRAE 25-2018 PDF

Standard No.: ASHRAE 25-2018
Release Date: 2018
Published By: ASHRAE - American Society of Heating@ Refrigerating and Air-Conditioning Engineers@ Inc.
Latest: ASHRAE 25-2018

Scope: This standard applies to factory-made@ forced-circulation free-delivery unit coolers operating with a volatile refrigerant fed by either direct expansion or liquid overfeed at wet and/or dry conditions. This standard does not include the following: a. Air conditioning units used primarily for comfort cooling for which testing methods are given in other standards b. Unit coolers operating at latent load conditions with a refrigerant saturation temperature of less than 32??(0.0?? c. Unit coolers installed in or connected to ductwork or with external air resistance devices not provided by the manufacturer d. Unit coolers using zeotropic refrigerants with glides greater than 12.6??(7.0?? e. Field testing of unit coolers PURPOSE This standard establishes uniform methods of testing for obtaining performance data@ lists and defines the terms used in testing@ specifies data to be recorded and formulas to be used in calculations@ and sets limits and tolerances in testing.

ASHRAE 25-2018 history

2018 ASHRAE 25-2018 Methods of Testing Forced-Circulation Free-Delivery Unit Coolers for Refrigeration
2001 ASHRAE 25-2001 Methods of Testing Forced Convection and Natural Convection Air Coolers for Refrigeration
1990 ASHRAE 25-1990 Methods of Testing Forced Convection and Natural Convection Air Coolers for Refrigeration (Errata - 08/05/1996)