Contamination effects on the performance of a heat pump charged with R-407C and POE lubricant /
11.9% mineral oil contamination. Data analysis showed that
| Main Author: | |
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| Format: | Thesis eBook |
| Language: | English |
| Published: |
[Place of publication not identified] :
[publisher not identified] ;
1996.
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| Subjects: | |
| Online Access: | Link to OAKTrust copy |
| Summary: | 11.9% mineral oil contamination. Data analysis showed that 22 and mineral oil, while the second used R-407c and POE with Btuh (534 W) when mineral oil contamination of at least 5.6% completed approximately 20% of the cycles projected for the compressor from the R-407c unit showed normal wear for the consisted of three different phases of study. The first set high temperature cooling tests increased by as much as 1822.5 higher pressure with compressor discharge temperatures which immediate effect on the performance of a heat pump. However, increase could have potentially lead to increased amounts of length of time that the unit had been in operation. Although mineral oil contamination present. One unit operated with R- of tests examined the long term reliability of a heat pump One unit was left as dry as possible, while the second unit operating with an alternative refrigerant when the unit has project examined the effects of water contamination on the pump charged with R407c and POE were investigated. Testing R-407c unit consumed more power during operation. The reliability of a unit charged with R-407c and POE lubricant. results showed that mineral oil contamination had minimal showed little to no increase in moisture content as well as study. The next phase of the project involved performance testing of two additional heat pump units. Overall, the The capacity of each unit was approximately the same, yet the The effects of contamination on the performance of a heat the power consumption during the high temperature heating and the R-407c unit operated at approximately 15 psi (103.4 kPa) the three metals during the study. The total acid number in the trace metals as the acid attacked system components. the water contaminated unit showed a general increase. This this was an encouraging result, the compressors had only was contaminated with 1200 PPM of moisture. Laboratory tests was present in the first system, The final phase of the were approximately I O'F (5.6'C) lower than the R-22 unit. |
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| Item Description: | "Major subject: Mechanical Engineering". In title, numerals are used. Vita. |
| Physical Description: | xiii, 182 leaves : illustrations ; 28 cm. Also available online. Issued also on microfiche from Lange Micrographics. |
| Bibliography: | Includes bibliographical references: pages 154-157. |