Development and validation of static simulation model for CO2 heat pump

Seiichi Yamaguchi; Daisuke Kato; Kiyoshi Saito; Sunao Kawai

doi:10.1016/j.ijheatmasstransfer.2011.01.013

Development and validation of static simulation model for CO₂ heat pump

Seiichi Yamaguchi^*, Daisuke Kato, Kiyoshi Saito, Sunao Kawai

^*Corresponding author for this work

School of Fundamental Science and Engineering

Research output: Contribution to journal › Article › peer-review

41 Citations (Scopus)

Abstract

A simulation model for the CO₂ heat pump water heater was developed and validated in this study. Component models of the gas cooler, evaporator, compressor, and expansion valve were constructed with careful consideration for the heat transfer performances. To validate the simulation model, experiments were carried out using an actual CO₂ heat pump water heater (water heating capacity: 22.3 kW; hot-water temperature: 90 °C). In simulations and experiments, the effects of the inlet water temperature and outside air temperature on the system characteristics were discussed. As a result, the average difference in COP between the simulation results and experimental results is 1.5%.

Original language	English
Pages (from-to)	1896-1906
Number of pages	11
Journal	International Journal of Heat and Mass Transfer
Volume	54
Issue number	9-10
DOIs	https://doi.org/10.1016/j.ijheatmasstransfer.2011.01.013
Publication status	Published - 2011 Apr

Keywords

CO
Heat pump
Simulation
Validation
Water heater

ASJC Scopus subject areas

Condensed Matter Physics
Mechanical Engineering
Fluid Flow and Transfer Processes

Access to Document

10.1016/j.ijheatmasstransfer.2011.01.013

Cite this

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title = "Development and validation of static simulation model for CO2 heat pump",

abstract = "A simulation model for the CO2 heat pump water heater was developed and validated in this study. Component models of the gas cooler, evaporator, compressor, and expansion valve were constructed with careful consideration for the heat transfer performances. To validate the simulation model, experiments were carried out using an actual CO2 heat pump water heater (water heating capacity: 22.3 kW; hot-water temperature: 90 °C). In simulations and experiments, the effects of the inlet water temperature and outside air temperature on the system characteristics were discussed. As a result, the average difference in COP between the simulation results and experimental results is 1.5%.",

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AU - Yamaguchi, Seiichi

AU - Kato, Daisuke

AU - Saito, Kiyoshi

AU - Kawai, Sunao

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AB - A simulation model for the CO2 heat pump water heater was developed and validated in this study. Component models of the gas cooler, evaporator, compressor, and expansion valve were constructed with careful consideration for the heat transfer performances. To validate the simulation model, experiments were carried out using an actual CO2 heat pump water heater (water heating capacity: 22.3 kW; hot-water temperature: 90 °C). In simulations and experiments, the effects of the inlet water temperature and outside air temperature on the system characteristics were discussed. As a result, the average difference in COP between the simulation results and experimental results is 1.5%.

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