Globally, regulations on environmental issues and the increasing demand for renewable energy are demanding efficient energy integration systems. For example, in Japan, the implementation of the de-nuclearization policy had caused the deficiency in energy, thereby people had begun to pay attention to the auxiliary power systems, such as Ene-farm. Ene-farm is a high-efficiency auxiliary power conversion system using fuel cells, with 90% of total energy conversion efficiency including hot water supply. However, the use of waste heat from fuel cells is limited to simple hot water supply. To solve this problem, this study proposes a sorption system. Up to now, sorption systems have been used mainly for cooling, and Water/LiBr has been mainly used as a working fluid. However, water lithium bromide causes corrosion problems, crystallization problems and freezing problems at low evaporation temperatures, and cannot be operated at low temperatures of the generator below 90℃. In order to solve this problem, cooling and heating simulations were conducted for the alternative working fluids using R32, R1234ze (E), and R1234yf, which have been spotlighted as regulations on high GWP refrigerants. Also, to make the system be integrated with heating and cooling, simulations on hybrid absorption heat pump were conducted systems using selected working pair. In cooling mode, R32/DMAC pair has the highest COP but the narrowest operating range, with a maximum COP of 0.581 at 5℃ evaporation temperature. In heating mode, R32/DMAC pair shows the highest COP at the lowest circulation ratio under the thermal conditions of waste heat. Therefore, R32/DMAC pair is selected as the working fluid for the hybrid sorption heat pumps, and the cycle simulation is conducted to identify the performance characteristics and to examine the feasibility of application.