Method of Testing Air-to-Air Heat/Energy Exchangers

Abstract

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.

Regenerators:

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)

Recuperators:

a.

Fixed-plate exchangers (including sensible-only and enthalpic plates)

PURPOSE

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.