| Development and Verification of a Linear-Fit Mixed System Rating Method for Unitary Two-Speed and Variable-Speed Air Conditioners Contributor(s): Nist (Author) |
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ISBN: 1497334780 ISBN-13: 9781497334786 Publisher: Createspace Independent Publishing Platform OUR PRICE: $13.29 Product Type: Paperback Published: March 2014 |
| Additional Information |
| BISAC Categories: - Science | Weights & Measures |
| Physical Information: 0.21" H x 8.5" W x 11.02" (0.56 lbs) 100 pages |
| Descriptions, Reviews, Etc. |
| Publisher Description: A linear-fit method of rating residential-type air conditioning systems was evaluated based on performance predictions and laboratory testing of one two-speed matched system and two mixed systems (matched two-speed condensing unit, matched indoor coil blower, and two mixed coil blowers). The individual evaporators and the condensing unit were separately tested using water heated/cooled condensing/evaporating units at standard air conditions over a range of evaporator refrigerant saturation temperatures, evaporator superheats, and liquid refrigerant temperatures. Capacity predictions were within 1.0 % of the tested values for the mixed systems, and the EER predictions were within 1.5 % of the measured EERs. The methods used for system rating on the two-speed system can also be applied to a variable-speed system. |