공동주택 단지 난방, 급탕 배관경 설계에 관한 연구

In newly constructed standards for the design of environment-friendly housing and performance estimation, it has been designated that more than 95% of heat is supplied to the user in case of cogeneration or district heating system. Therefore, the current heat delivery performance and corresponding design conditions are required to be assessed in details. In this study, the current design condition of the secondary pipe systems in an apartment housing is investigated using the simulation method, for which annual operation data such as the mass flow rates, ambient temperature and the pipe diameter etc. has been used as input data. The results show that the current pipe diameter is in general designed to be oversized to some extent and the reduction of the pipe diameter to one or two level can attain serious heat loss reduction up to about 10%.