A comparative study between a constant-speed air-conditioner and a variable-speed air-conditioner

Ing Youn Chen, C. S. Wei, Y. M. Chen, Chi-Chuan Wang, Y. J. Chang

Research output: Contribution to journalConference articlepeer-review

7 Scopus citations

Abstract

The present study compares the performance between a constant-speed air-conditioner and a variable-speed airconditioner subject to identical operation conditions. Influences of added heat load, ambient temperature, and setting point temperature on the system performances had been examined. The results show that the average consumed poweris increased with the increase of heat load and with the decrease of TserAlso, the variable-speed AC consumes less average power than that of the constant-speed AC under the same heat load and Tser For the same initial room temperature, the constant-speed AC can reach setting point earlier. Although the variable-speed AC takes a longer time to reach the set point temperature, its compressor operates at a low speed operation as Tser reached. Thus, the consumed power is reduced in the long term operation and the room set point temperature can be maintained at a more stable condition than the constant-speed AC.

Original languageEnglish
Pages (from-to)326-332
Number of pages7
JournalASHRAE Transactions
Volume115 PART 1
StatePublished - 19 Nov 2009
Event2009 ASHRAE Winter Conference - Chicago, IL, United States
Duration: 25 Jan 200928 Jan 2009

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