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Title: High efficiency novel window air conditioner

Journal Article · · Applied Energy
 [1]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

This paper presents the technical development of a high efficiency window air conditioner. In order to achieve higher energy efficiency ratio (EER), the original capacity of the R410A unit was downgraded by replacing the original compressor with a lower capacity but higher EER compressor, while all heat exchangers and the chassis from the original unit were retained. The other subsequent major modifications included – the AC fan motor being replaced with a brushless high efficiency electronically commuted motor (ECM) motor, the capillary tube being replaced with a needle valve to better control the refrigerant flow and refrigerant set points, and R410A being replaced with drop-in environmentally friendly binary mixture of R32 (85% molar concentration)/R125 (15% molar concentration). All these modifications resulted in significant EER enhancement of the modified unit.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Building Technologies Research and Integration Center (BTRIC)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1213331
Journal Information:
Applied Energy, Journal Name: Applied Energy Vol. 156; ISSN 0306-2619
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

References (17)

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Performance assessment of HC-290 as a drop-in substitute to HCFC-22 in a window air conditioner journal June 2005
Analysis of environmentally friendly refrigerant options for window air conditioners journal March 2015
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Experimental Investigation of Performance of a Residential Air Conditioning System with an Evaporatively Cooled Condenser journal November 1993
High Efficiency Room Air Conditioner report January 2015

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