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Optimal sizing of a heat pump/thermal storage system based on the linear programming method
Author(s) -
Shiba Takashi,
Yokoyama Ryohei,
Ito Koichi
Publication year - 1995
Publication title -
international journal of energy research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.808
H-Index - 95
eISSN - 1099-114X
pISSN - 0363-907X
DOI - 10.1002/er.4440190804
Subject(s) - thermal energy storage , sizing , heat pump , linear programming , capital cost , process engineering , thermal , storage tank , engineering , computer science , environmental science , mechanical engineering , thermodynamics , electrical engineering , chemistry , algorithm , heat exchanger , physics , organic chemistry
An optimal planning method is proposed for a heat pump/thermal storage system that utilizes time‐of‐use pricing of the electrical utility. Equipment capacities are determined so as to minimize the annual total cost in consideration of system's operational strategies for energy demand requirements. This optimal planning problem is solved by the linear programming method. Through a numerical study on a heat pump/thermal storage system for a commercial building, the effect of thermal storage tank is investigated on the long‐term economics of the system. A parametric study is also performed with respect to the initial capital unit cost of thermal storage tank. The relation is clarified among the optimal capacities of thermal storage tank and other pieces of equipment. It is ascertained that this optimal planning method is a useful tool for evaluating the economic properties of heat pump/thermal storage systems.