Simultaneous heating and cooling system with thermal storage tanks considering energy efficiency and operation method of the system

Abstract

This study is aimed to propose a Simultaneous Heating and Cooling System with Thermal Storage Tanks which performs based on the balanced heat recovery considering energy efficiency and to suggest the operation method of proposed system. To achieve these aims, the essential equipment to the system containing terminal system was determined and a method for applying a variety of heat sources and sinks with one plant was suggested. The operation strategy is suggested for a heat pump to select the heat source or sink while considering zone temperature stability and to maximize the usage of the simultaneous heating and cooling system as much as possible. To achieve this aim, reference points for control were set in order to prevent a lack of available energy, and the priority was given to balancing modes which is only performed by proposed simultaneous heating and cooling system. The simulation results show that all supply temperatures can satisfy the design temperature; therefore, the zone temperatures are controlled well with a small amount of energy input for the auxiliary system. (C) 2019 Elsevier B.V. All rights reserved.