Role of trombe walls on the reduction of energy load and sustainable development in an eco-resort residential building in Binalood region with a cold and dry climate

Trombe wall is a passive strategy that reduces the energy consumption in buildings and helps for sustainable development of residential sector. Applying these walls is very important in areas that need heating load in winter. In this study, a set of trombe walls is evaluated for the energy management of a residential building under real conditions in Binalood region with a cold and dry climate. In order to study the potentials of trombe wall, four different designs, including C, T3SG, T4SG and T designs, for trombe walls are considered. Trombe walls of all four suggested designs are exposed to outdoor conditions and installed at 17 places on the southern walls of the residential building. The occupied surface by these walls is 60% of the total area of the southern walls. Therefore, using the southern natural light is possible for all 17 places. The obtained results show that when the shade (Blinds) and ventilation values are considered on the common wall with specific seasonal and daily functions, the use of trombe walls in all designs leads to a significant reduction in the heating load of the entire building. Results show that during five months of the year, the trombe walls with C, T3SG, T4SG and T designs lead to the reductions of 4710, 5400, 5112 and 5559, kWh in the heating load of the building, respectively. In addition, the most optimal mode, i.e. design T with three directions of radiation absorption, trapezoidal cross-section, and thicker storage wall, leads to the greatest decrease (1637 kWh) in heating load in January.