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 ;
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
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. |
Availability Notes |
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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 |