축열식 열교환기의 축/방열 특성

Recently, the interest has been increased to the efficient use for unutilized energy and the emission reduction of carbon dioxide. In particular, waste water on middle temperature is recognized to one of the representative unutilized energy, which occurs on manufacturing processes in the many manufacturers such as power, food and textile industry. The unutilized energy have a disadvantage such as the low energy utility because low energy density. Therefore, a lot of research about the system improvement combined with a heat pump were reported for the production of heat energy of high temperature of utility. However, It is important to maintain steadily heat supply from the system. A heat storage and heat exchanger is applied to the system in order to increase utilization because the heated waste water which occurred in the industry process has various flow according to time. In this article, we designed an thermal storage type heat exchanger which has a thermal storage tank and heat exchanger function as an evaporator of heat pump system. The designed thermal storage type heat exchanger has a double shell and tube structure. Moreover, it is structured to the purpose of conducting stored heat and transferring to four heat medium including a phase change material(PCM). In this article, a basic experiment was conducted in order to measure the heat transfer characteristics of the each three heat medium between PCM. And experimental results will be used as the design data for thermal storage type heat exchanger.