EXERGY OPTIMIZATION OF BUILDINGS WITH DIFFERENT SOLAR SYSTEMS

Abstract

Exergy, as a measure of useful work that can be obtained by the interaction of the system and the environment, is used for the optimization and allocation of losses in the energy system. It is also widely used in the design, simulation and per-formance evaluation of energy systems. In this paper it is investigated the Serbian residential building with photovoltaics and solar collectors on the roof. The building has electrical space heating. Exergy optimization (including embodied exergy) was performed with the aim to determine the maximum value of the generated electricity. On that way, primary energy consumption can be minimized. The residential build-ings with variable PV cell efficiency are investigated. The buildings were simulated in EnergyPlus, Open Studio plug-in in Google SketchUp was used for buildings design and Hooke-Jeeves algorithm for optimization. GENOPT was used for soft-ware execution control during optimization.