ASHRAE STD 84
Method of Testing Air-to-Air Heat/Energy Exchangers
|Publication Date:||1 January 2020|
This standard prescribes the laboratory methods for testing the performance of air-to-air heat and energy exchangers. In this standard, an air-to-air heat/energy exchanger is a device to transfer heat, or heat and water vapor, from one airstream to another. The types of air-to-air heat/energy exchangers covered by this standard are as follows.
a. Rotary regenerators (including heat wheels and total energy wheels)
b. Fixed-bed regenerators, including double-core regenerators, but excluding indoor fixed-bed regenerators that require connecting ductwork at Station 1 and 4 in which reversing airflows will occur in the field, and single-core fixed-bed regenerators
Exchangers with intermediate energy transfer medium arranged in a closed-loop circuit:
a. Heat pipe exchangers
b. Thermosiphon exchangers
c. Recovery loop exchangers (run-around loops)
a. Fixed-plate exchangers (including sensible-only and enthalpic plates)
The purpose of this standard is to
a. establish a uniform method of test for obtaining the effectiveness of air-to-air heat/energy exchangers;
b. specify the test conditions, data required, uncertainty analysis to be performed, calculations to be used, and reporting procedures for testing the performance of an air-to-air heat/energy exchanger; and
c. specify the types of test equipment for performing such tests.