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A platform for research: civil engineering, architecture and urbanism
Performance analysis of an R744 ground source heat pump system with air-cooled and water-cooled gas coolers
In order to decrease the earth's energy imbalance degree, a R744 ground source heat pump system (GSHPS) with air-cooled and water-cooled gas coolers was designed, and the performances of this system were analyzed numerically. The results show that, for the proposed R744 system in different regions, the earth's energy imbalance degree can always be decreased to zero by optimizing the cooling load proportion of air-cooled gas cooler. Comparing with the system without air-cooled gas cooler, the investment cost of the proposed R744 system is decreased by 14.5%~25.5% due to the decreasing cost of ground heat exchanger, and the coefficient of performance is increased. With the increase of ground heat exchanger depth, the performance deteriorates, and the ground heat exchanger with shorter depth is preferred in the GSHPS. The investment and operation costs of the proposed R744 system are lower than that of the existing R134a system. ; acceptedVersion ; © 2015. This is the authors’ accepted and refereed manuscript to the article. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
Performance analysis of an R744 ground source heat pump system with air-cooled and water-cooled gas coolers
In order to decrease the earth's energy imbalance degree, a R744 ground source heat pump system (GSHPS) with air-cooled and water-cooled gas coolers was designed, and the performances of this system were analyzed numerically. The results show that, for the proposed R744 system in different regions, the earth's energy imbalance degree can always be decreased to zero by optimizing the cooling load proportion of air-cooled gas cooler. Comparing with the system without air-cooled gas cooler, the investment cost of the proposed R744 system is decreased by 14.5%~25.5% due to the decreasing cost of ground heat exchanger, and the coefficient of performance is increased. With the increase of ground heat exchanger depth, the performance deteriorates, and the ground heat exchanger with shorter depth is preferred in the GSHPS. The investment and operation costs of the proposed R744 system are lower than that of the existing R134a system. ; acceptedVersion ; © 2015. This is the authors’ accepted and refereed manuscript to the article. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
Performance analysis of an R744 ground source heat pump system with air-cooled and water-cooled gas coolers
Hu, Haitao (author) / Eikevik, Trygve Magne (author) / Nekså, Petter (author) / Hafner, Armin (author) / Ding, Guoliang (author) / Huang, Qingnan (author) / Ye, Jingjing (author)
2016-01-01
cristin:1288130
72-86 ; 63 ; International journal of refrigeration
Article (Journal)
Electronic Resource
English
DDC:
690
Analysis for Leakage of Coolers for Water-cooled Screw-type Air Compressor and Countermeasures
| British Library Online Contents | 2014