The paper analyses the influence of the solar wall (unglazed transpired solar collector) on the external envelope during heating and non-heating seasons. Experiments were performed in two rooms – the one with a solar wall and without it. Based on experimental data, the analysis of the influence of the solar wall on the external envelope was done for two cases: employing air by-pass and refusing it. Also, the numerical simulation of the solar wall employing “COMSOL Multiphysics” software was performed. 8 different alternatives were simulated thus seeking to define the ways to decrease a negative and increase a positive influence of the solar wall on the external envelope of the building both in heating and non-heating seasons. The obtained results have shown that the solar wall makes a negative influence on the envelope during the non-heating season if air by-pass is not used. Heat gains increase by 8–12.2%, compared to the case without the solar wall. It has been also defined that the solar wall protects the envelope from heat gains if air by-pass is applied. During the heating season, the solar wall may decrease heat losses by 25.5%, compared to the case without the wall.

Article in: Lithuanian

Article published: 2014-10-24