Modeling of a residential house coupled with a dual source heat pump using TRNSYS software

• We simulate a residential house (type 56a on TRNSYS) coupled with heat pump system (type 20 on TRNSYS).
• We examine the control function in the level of heat pump.
• We study the temporal evolution of the temperature and the energy for 24 h operation in January and 4500 h operation in winter.
• The system gives good results in all operating states.
• The use of renewable energy and control function in the residential building is interesting.

With the information technology revolution and the improving requirement for indoor air environment, energy consumption for air conditioning is increasing in Tunisia. In this research, a heating a residential house using the abundant and universal sources is proposed for a residential house in Tunisia. The effect of the incidence solar radiation in the coupling of a residential house and a heat pump system in all directions during the winter has been studied. The effect of ON–OFF technology in the level of the evaporator of the heat pump has been demonstrated. We present a mathematical description of the house on TRNSYS, as well as the numerical results of the simulation of coupling of the several components. The incidence solar radiation, the temperature distribution and the energy consumed and delivered, and its impact on air-conditioning load in rooms have been measured using the Tunisian climate. Numerical results have been obtained for 24 h in January and 4500 h operation in winter. Results show that the system may be satisfactorily used for residential building or greenhouse heating in the Mediterranean and region of Tunisia.

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