Design approach for low-exergy consumption for building service life

An optimization approach is presented in this paper to minimize life-cycle environmental evaluated in terms of expanded cumulative exergy consumption during a building service life, resulting to negative impacts due to waste emission. The optimal solution is found using the strong-searched and structured genetic algorithms. A case study is presented. The strawbale-walled building is compared favourably with the conventional sandcrete block wall in its life-cycle and improves the internal microclimate of a building better than latter. For a residential building the results of the analysis has shown that, energy demand value was input to obtain exergy analysis in building. Hence, the flow of exergy analysis has reduced the load on building service equipment with a remarkable amount of energy left (1/3 of the total energy load), but the same is not true of exergy where the flow envelope sub-system tend to zero.