| 주 저자 | Beom-Jun Kim, Su-Young Jo, Jae-Weon Jeong |
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| 공동 저자 | - |
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| 소속 | - |
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| Abstract | An appropriate design strategy suitable for the purpose of a building should be considered to apply a cascade heat pump system for multiple functions to buildings. The purpose of this study is to propose a sizing process and evaluate a capacity calculation simulation of air-to-air/water cascade heat pump systems applied in residential buildings that supply indoor cooling and hot water. A simulation study was performed by dividing the capacity calculation method suitable for the building conditions into two cases when this multi-functional cascade heat pump system was applied to a residential building. Case 1 was a sizing method that considered a low-cycle heat pump for indoor cooling. The existing heat pump sizing method for the hot-water supply used in the previous study was set to Case 2. The heat pump simulation and heat calculations were conducted based on thermodynamic theoretical equations. A simulation tool capable of dynamic thermal load analysis was used for model building. Detailed building information was entered in accordance with design standards. The results showed that Case 1 completely satisfies both the cooling and hot-water supply performance of the heat pump compared to Case 2. Based on Case 1, when the temperature of the intermediate heat exchanger was 10
higher than the outdoor temperature, the air volume of the indoor unit and the outdoor unit was found to be 941 m3/h at an appropriate air volume rate. In addition, the energy consumption was also the lowest at 2.29 kW h, and the maximum system COP of 6.0 was achieved. |
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| Keyword | Cascade heat pump, Multi-functional system, Sizing procedure, Residential building, Intermediate heat exchanger, Comparative analysis |
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| 페이지 | pp. 1~17 |
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| 논문 파일 |
없음
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| 게재일시 |
2023-03
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| DOI | - |
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| 학회/저널명 | Case Studies in Thermal Engineering Vol.43 |
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| 년도 | 2023 |
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| 추가 문구 | 202775, https://doi.org/10.1016/j.csite.2023.102775 |
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| 등록 일시 | 2025-06-18 15:27:06 |
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