Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Evaluation of R-22 Alternatives for Heat Pumps.
Author Hwang, Y. ; Judge, J. F. ; Radermacher, R. ;
CORP Author Maryland Univ., College Park. Center for Environmental Energy Engineering.;Environmental Protection Agency, Research Triangle Park, NC. Air Pollution Prevention and Control Div.
Publisher 1996
Year Published 1996
Report Number EPA-R-819710-01-0; EPA/600/A-96/007;
Stock Number PB96-143466
Additional Subjects Heat pumps ; Environmental chemical substitutes ; Halohydrocarbons ; Material substitution ; Retrofitting ; Alternatives ; Heat exchangers ; Heating systems ; Heat recovery ; Energy efficiency ; Refrigerants ; Chlorofluorocarbons ; Air pollution abatement ; Performance evaluation ; Reprints ; R-22 ; R-407C
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
NTIS  PB96-143466 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 05/18/1996
Collation 10p
The paper reports results of a study investigating three different possibilities for replacing refrigerant R-22 with R-407C in a heat pump. The first and simplest scenario was a retrofit without any hardware modifications. The second possibility was a modification that required altering the refrigerant path to attain a near-counterflow configuration in the indoor coil for the heating mode. The third and most complex possibility was soft optimization, consisting of maximizing the coefficients for performance (COPs) in the heating and cooling modes by optimizing the refrigerant charge and expansion devices.