Exergy Analysis of a Solar Heating System in Indoor Spaces

Energy consumption is rising in unison with population increase, industrialization, and urbanization.A solar heating system is one of the devices that supply consumers with thermal energy.Consequently, it is imperative to conduct an exergy analysis on this system in order to identify genuine, beneficial energy loss, which is not detectable by the first law of thermodynamics.The exergy analysis in this study is conducted using experimental data from the solar heating system in a space that includes a solar collector, pump, connections, and radiator, all of which operate with water as the working fluid.The exergy analysis is conducted for indoor heating spaces, radiators, and solar collectors under a variety of operating conditions, including a range of ambient temperatures and heating demands.The findings indicated that the rate of energy degradation is directly influenced by the heating burden and ambient temperature.The energy degradation rate in the solar collector increased by 14.25% when the ambient temperature varied from 15 to 21, while it decreased in the radiator and interior space by 55.59% and 57.57%, respectively.Conversely, as the heating capacity increased from 1100 to 1250 W, the energy degradation rate in the radiator and the indoor space increased by 15.45% and 19.81%, respectively.