| Main Title |
Comparison of CFC-114 and HFC-236ea Performance in Shipboard Vapor Compression Systems. |
| Author |
Ray, D. T. ;
Pate, M. B. ;
Shapiro, H. N. ;
|
| CORP Author |
Iowa State Coll., Ames.;Environmental Protection Agency, Research Triangle Park, NC. Air Pollution Prevention and Control Div. |
| Publisher |
Jun 97 |
| Year Published |
1997 |
| Report Number |
EPA-R-820755-01-4; EPA/600/R-97/058; |
| Stock Number |
PB97-178735 |
| Additional Subjects |
Shipboard ;
Refrigerants ;
Centrifugal compressors ;
Comparative evaluations ;
Environmental chemical substitutes ;
Halohydrocarbons ;
Performance evaluation ;
Material substitution ;
Vapor compression refrigeration cycle ;
Evaporators ;
Condensers ;
Alternatives ;
Heat transfer ;
Thermodynamics ;
Computer models ;
Computerized simulation ;
HFC-114 ;
HFC-236ea ;
Chillers
|
| Internet Access |
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB97-178735 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
88p |
| Abstract |
The report gives results of a comparison of the performance of two refrigerants--1,1, 1,2,3,3-hexafluoropropane (HFC-236ea) and 1,2-dichloro-tetrafluoro-ethane (CFC-114)--in shipboard vapor compression refrigeration systems. A computer model was developed for comparing the two refrigerants in a simulated 440-kW centrifugal chillersystem. Equations for modeling each system component were developed and solved using the Newton-Raphson method for multiple equations and unknowns. Correlations were developed for CFC-114 and HFC-236ea boiling and condensing coefficients taken at the Iowa State Heat Transfer Test Facility. The experimental data provided by the NSWC sufficiently validate the model, and the simulation model predicts that HFC-236ea would perform favorably as a drop-in substitute for CFC-114. Several recommendations are discussed which may further improve the performance of HFC-236ea in Navy chillers. |
| Supplementary Notes |
Sponsored by Environmental Protection Agency, Research Triangle Park, NC. Air Pollution Prevention and Control Div. |
| Availability Notes |
Product reproduced from digital image. Order this product from NTIS by: phone at 1-800-553-NTIS (U.S. customers); (703)605-6000 (other countries); fax at (703)321-8547; and email at orders@ntis.fedworld.gov. NTIS is located at 5285 Port Royal Road, Springfield, VA, 22161, USA. |
| NTIS Title Notes |
Final rept. Oct 92-May 95. |
| Category Codes |
71M; 68A; 47A |
| NTIS Prices |
PC A06/MF A01 |
| Primary Description |
600/13 |
| Document Type |
NT |
| Cataloging Source |
NTIS/MT |
| Control Number |
731600890 |
| Origin |
NTIS |
| Type |
CAT |
