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Main Title Screening of Non-CFC Alternatives for High-Temperature Heat Pumps.
Author Kazachki, G. ; Gage, C. L. ;
CORP Author Acurex Corp., Research Triangle Park, NC.;Environmental Protection Agency, Research Triangle Park, NC. Air Pollution Prevention and Control Div.
Publisher 1997
Year Published 1997
Report Number EPA-68-D4-0005; EPA/600/A-97/103;
Stock Number PB98-135197
Additional Subjects Heat pumps ; Environmental chemical substitutes ; Thermodynamic properties ; Comparative evaluations ; Material substitution ; Refrigerants ; Chlorofluorocarbons ; Alternatives ; Screening ; Air pollution abatement ; Ozone depletion ;
Library Call Number Additional Info Location Last
NTIS  PB98-135197 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 12p
Abstract Ten pure fluids (R134, R134a, R245cb, R227ea, R236fa, RE134, R236ea, R245fa, R245ca, and R123) and three blends are analyzed as refrigerants for high-temperature heat pumps at three sets of evaporating/condensing temperatures: 7/80 deg C, 20/100 deg C, and 30/120 deg C. Aside from the commonly used thermodynamic analytical criteria, design criteria based on an R410a a scroll air-conditioning and heat-pump compressor are applied: discharge pressure of 3.4 MPa continuous and 4.1 to 4.5 MPa short-time, pressure ratio of 10, and isentropic discharge temperature at 130-145 deg C. The heat cost reflecting the market conditions is used to make the final selection.
Supplementary Notes Presented at the IIR Conference on Heat Pump Systems, Energy Efficiency, and Global Warming, Linz, Austria, September 28-October 1, 1997. Sponsored by Environmental Protection Agency, Research Triangle Park, NC. Air Pollution Prevention and Control Div.
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NTIS Title Notes Rept. for Jun-Aug 97.
Category Codes 71M; 68A
NTIS Prices PC A03/MF A01
Primary Description 600/13
Document Type NT
Cataloging Source NTIS/MT
Control Number 821200280
Origin NTIS
Type CAT