Unitary and Room air Conditioners & Heat Pumps
ASHRAE Technical Committee 8.11

Meeting Documents

Download documents from previous committee meetings below according to the appropriate society year. ASHRAE's society year begins on July 1 and ends June 30.


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Other Publications

Additional documents produced by the TC may be available for direct download or for purchase through the ASHRAE Bookstore, as noted below.

Research

ASHRAE members have free access to research project final reports. Non-ASHRAE members can purchase research reports for $30 per article from the ASHRAE Bookstore found at this link.

1581-RP:  DEVELOP ALTERNATE GUIDELINES FOR UNITARY AIR CONDITIONER TEST CONFIGURATIONS WHICH CANNOT ADHERE TO ASHRAE 37/ASHRAE 116 SPECIFIED DUCT DIMENSIONS AND EXTERNAL PRESSURE TAP LOCATIONS
TC 8.11, Unitary and Room Air Conditioners

As HVAC indoor equipment continues to grow to meet the efficiency demands of the consumer the ability of the test lab to produce accurate and repeatable data will be strained. The current state of the art has exceeded the ability of many test lab facilities to test per the standards. Perfectly good equipment could fail audit tests as a result of not using the correct ASHRAE geometry. A high efficiency design may be rated significantly below its actual capability because the ASHRAE geometry is not adhered to by the manufacture. Both of these cases are unacceptable in a competitive market place.

The objective of this project is to experientially develop standardized geometry that will be utilized by laboratories when necessary to test unitary air-conditioning equipment in configurations that deviate from ASHRAE specified duct dimensions and external pressure tap measurement locations. This geometry will need to produce static pressure measurements that are within 5% of what standard ASHRAE duct design produces.

The following is a list of publications from other TC research projects:

J.T. LeRoy, E.A. Groll, and J.E. Braun, "Capacity and Power Demand of Unitary Air Conditioners and Heat Pumps Under Extreme Temperature and Humidity Conditions," Final Report ASHRAE RP-859, Herrick Labs 97-26, Report No. 3220-3, 1997

J.-H. Kim, and E.A. Groll, "Microchannel Heat Exchanger Defrost Performance and Reliability," Final Report (ASHRAE 1195-RP), Herrick Labs 2003-13, Report No. 5707-2, 2003.

J.T. LeRoy, E.A. Groll, and J.E. Braun, "Computer Model Predictions of Dehumidification Performance of Unitary Air Conditioners and Heat Pumps Under Extreme Operating Conditions", ASHRAE Transactions, Vol. 104, Pt. 2, 1998.

J.T. LeRoy, E.A. Groll, and J.E. Braun, "Evaluating the Accuracy of Public Domain Simulation Model PUREZ in Predicting the Performance of Unitary Equipment", ASHRAE Transactions, Vol. 106, Pt. 1, 2000, pp. 200-215.

J.-H. Kim, and E.A. Groll, "Performance Comparisons of a Unitary Split System Using Microchannel and Fin-Tube Outdoor Coils," ASHRAE Transactions, Vol. 109, Pt. 2, 2003, 11 pages.

Presentations

Presentations from TC sponsored seminars can be downloaded here, if available.