Influencing Degree of Star-Stop Frequency on Running Efficiency of Ground Source Heat Pump which Using Vertical Buried Pipe

Abstract:

Through the three-dimensional heat transfer simulation of different periodic running of 3×3 tube group during one running period, the article draw the influence of vertical buried tube heat exchanger heat transfer performance under the different start-stop times, when total time is certain, shortening the continuous time of intermittent operation (increasing the start and stop times) helps promote the unit energy efficiency as the outlet water temperature change of the heat exchanger is toward to the favorable direction, and the trend of the change showed first increased and then decreased with the increase of start-stop times. Increasing the number of start and stop times do more contribution to promote the energy efficiency of the heat pump unit under the Working condition of refrigeration.

• Periodical: Applied Mechanics and Materials (Volume 508)
• Pages: 141-145
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.508.141
• Online since: January 2014
• Authors: Xian Fang Hu*, Yu Yun Li, Yan Hua Chen, Zhong Yi Yu
• Keywords: Frequency of Start-Stop Time, Model, Running Efficiency, Temperature

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