Development of Hot Water Supply System Simulation Tool for Calculating Energy Conservation Performance in Consideration of Load Profile

-Development of Calculation Methods and Adaptation to Resource and Energy Conservation Design-

Abstract

In an effort to realize a decarbonized society, it is becoming increasingly important to plan for and design the reduction of hot-water energy consumption, sparticularly in buildings with high hot-water usage. The objective of this study is to develop a practical water supply system simulation tool for calculating the energy consumption of a water heating system by calculating the water heating load profile while taking into account heat losses from the piping and storage tank as well as the equipment characteristics of the heating device in the system. In this report, the equipment and piping were subdivided into modules, a calculation method was constructed to calculate the water volume and water temperature sequentially, and an example calculation using this tool was presented for examining the resource and energy conservation in a hot-water supply system.