Abstract
In order for economically viable distributed generation systems for apartment buildings to spread, it is essential to develop an efficient and low-cost heat supply system. We are developing a new cogeneration system (Neighboring CoGeneration: NCG). The key concept of this system is to install a heat supply unit with a hot water supply and a room heating function at each household and to connect different households by a single-loop hot water pipe. As a result, time leveling of the heat supply and heat transferring among households become possible. Thus, the costs of the piping and the heat source equipment decrease. Furthermore, because all the heat supply units store heat, the total heat storage capacity is large enough for cogeneration to generate according to the electricity demand and with high operating rate. In this paper, we reported the evaluation of the performance of the heat supply and the energy saving effect of NCG system for 50 households in winter by the dynamic simulation.
