Thermodynamic investigation on the effects of fouling factor for residantial heating system

In this study, the effect of fouling on the performance of th residential heating system with a combi-boiler was invesitgated by energy and exergy methods. In the analysis, four different indoor temperature scales, namely 18°C, 20°C, 22°C and 24°C, were taken into account. Six different fouling thickness (0.1 mm, 0.3 mm, 0.5 mm, 0.7 mm, 1.0 mm, and 1.5 mm) were investigated for the radiator system. Six different inner fouling thickness (0.1 mm, 0.3 mm, 0.5 mm, 0.7 mm, 1.0 mm, and 1.5 mm) and five different outer fouling thickness (0.1 mm, 0.2 mm, 0.3 mm, 0.4 mm, and 0.5 mm) were investigated for the heat exchanger of the combi-boiler. In this regard, 181 different cases (including the clean case) were formed for the single inddor temperature. Totally, 724 cases were investigated from the thermodynamic points of view.