Performance evaluation of a plate type condenser for heat pump water heater
This study deals with an application of blazed plate heat exchangers to a condenser used in a heat pump water heater. The heat transfer performance was experimentally evaluated by using a pump driven two-phase flow loop in the operating condition for water heating at the environmental temperature. T...
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The Japan Society of Mechanical Engineers
2014
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oai:doaj.org-article:342b9bb23f3e4722bed84fac6079fe892021-11-26T06:16:58ZPerformance evaluation of a plate type condenser for heat pump water heater2187-974510.1299/mej.14-00338https://doaj.org/article/342b9bb23f3e4722bed84fac6079fe892014-12-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/mej/2/1/2_14-00338/_pdf/-char/enhttps://doaj.org/toc/2187-9745This study deals with an application of blazed plate heat exchangers to a condenser used in a heat pump water heater. The heat transfer performance was experimentally evaluated by using a pump driven two-phase flow loop in the operating condition for water heating at the environmental temperature. The effects of number of refrigerant paths and setting orientation, such as a vertical orientation with downward refrigerant flow or a horizontal orientation, were evaluated. HFC134a was used as the refrigerant. Superheated vapor was supplied to the condenser, and heated water, and then subcooled liquid was exhausted. Water was supplied to form a counter flow heat exchange. Three kinds of heat exchangers with different refrigerant paths of 6, 10, and 14 were used. Refrigerant temperatures at the exit of each path were measured by inserted thermocouples to evaluate the flow distribution. As a result, it was shown that vertical orientation produced higher heat transfer rate than the horizontal orientation. For the horizontal orientation, heat transfer rate decreased with an increase of refrigerant channels from 10 to 14. The reason would be due to a maldistribution of the refrigerant. The deterioration in heat transfer performance for the horizontal orientation could be improved by the inclination of 15° of the heat exchanger.Hitoshi ASANOKazuya HONDANobuhiro TAKEDAMasaki KONDOKazuhiro NISHIMURAThe Japan Society of Mechanical Engineersarticleplate heat exchangercondensationheat pumpwater heaterhfc-134aflow distributionMechanical engineering and machineryTJ1-1570ENMechanical Engineering Journal, Vol 2, Iss 1, Pp 14-00338-14-00338 (2014) |
| institution |
DOAJ |
| collection |
DOAJ |
| language |
EN |
| topic |
plate heat exchanger condensation heat pump water heater hfc-134a flow distribution Mechanical engineering and machinery TJ1-1570 |
| spellingShingle |
plate heat exchanger condensation heat pump water heater hfc-134a flow distribution Mechanical engineering and machinery TJ1-1570 Hitoshi ASANO Kazuya HONDA Nobuhiro TAKEDA Masaki KONDO Kazuhiro NISHIMURA Performance evaluation of a plate type condenser for heat pump water heater |
| description |
This study deals with an application of blazed plate heat exchangers to a condenser used in a heat pump water heater. The heat transfer performance was experimentally evaluated by using a pump driven two-phase flow loop in the operating condition for water heating at the environmental temperature. The effects of number of refrigerant paths and setting orientation, such as a vertical orientation with downward refrigerant flow or a horizontal orientation, were evaluated. HFC134a was used as the refrigerant. Superheated vapor was supplied to the condenser, and heated water, and then subcooled liquid was exhausted. Water was supplied to form a counter flow heat exchange. Three kinds of heat exchangers with different refrigerant paths of 6, 10, and 14 were used. Refrigerant temperatures at the exit of each path were measured by inserted thermocouples to evaluate the flow distribution. As a result, it was shown that vertical orientation produced higher heat transfer rate than the horizontal orientation. For the horizontal orientation, heat transfer rate decreased with an increase of refrigerant channels from 10 to 14. The reason would be due to a maldistribution of the refrigerant. The deterioration in heat transfer performance for the horizontal orientation could be improved by the inclination of 15° of the heat exchanger. |
| format |
article |
| author |
Hitoshi ASANO Kazuya HONDA Nobuhiro TAKEDA Masaki KONDO Kazuhiro NISHIMURA |
| author_facet |
Hitoshi ASANO Kazuya HONDA Nobuhiro TAKEDA Masaki KONDO Kazuhiro NISHIMURA |
| author_sort |
Hitoshi ASANO |
| title |
Performance evaluation of a plate type condenser for heat pump water heater |
| title_short |
Performance evaluation of a plate type condenser for heat pump water heater |
| title_full |
Performance evaluation of a plate type condenser for heat pump water heater |
| title_fullStr |
Performance evaluation of a plate type condenser for heat pump water heater |
| title_full_unstemmed |
Performance evaluation of a plate type condenser for heat pump water heater |
| title_sort |
performance evaluation of a plate type condenser for heat pump water heater |
| publisher |
The Japan Society of Mechanical Engineers |
| publishDate |
2014 |
| url |
https://doaj.org/article/342b9bb23f3e4722bed84fac6079fe89 |
| work_keys_str_mv |
AT hitoshiasano performanceevaluationofaplatetypecondenserforheatpumpwaterheater AT kazuyahonda performanceevaluationofaplatetypecondenserforheatpumpwaterheater AT nobuhirotakeda performanceevaluationofaplatetypecondenserforheatpumpwaterheater AT masakikondo performanceevaluationofaplatetypecondenserforheatpumpwaterheater AT kazuhironishimura performanceevaluationofaplatetypecondenserforheatpumpwaterheater |
| _version_ |
1718409771410784256 |