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Purpose: Ground source heat pump system has been attracted in the horticulture industry for the reduction of energy costs and the increasing of farm income. Even though it has higher initial costs, if it uses in combination with heat storage, it is able to reduce the initial costs and operate efficiently. In order to have significant effect of heat storage type ground source heat pump system, it is required to design the capacity considering various conditions such as energy load pattern and operating schedule. Method: In this study, we have designed heat storage type ground source heat pump system in 5 cases by the operating schedule, and examined the system to find the most economic and having superb performance regarding the system COP(Coefficient of Performance) and energy consumption, using dynamic energy simulation, TRNSYS 17. Result: Conventional ground source heat pump system has lower energy consumption than heat storage type, but following the result of LCC(Life Cycle Cost) analysis, the heat storage type was more economic due to the initial costs. In addition, it has the most efficient performance and energy costs in the case of the smallest heat storage time. c 2015 KIEAE Journal       Horticulture Ground source heat pump system Heat storage Dynamic energy simulation A C C E P TA N C E IN F O Received June 2, 2015 Final revision received June 18, 2015 Accepted June 22, 2015          58 KIEAE Journal, Vol. 15, No. 3, Jun. 2015      . , Zhu et al.           ,  ,  ,             . ,         ,      ,             . ,                   ,                  .

Design method of heat storage type ground source heat pump system considering energy load pattern of greenhouse