Among all elements of building which related to CO2 emissions, building shapes is a decisive factor. By deforming a cubic model, we achieved optimal shape of WDH reducingLCCO2 by Genetic Algorithms (GA).

In this paper, we proposed a simulation methodology for evaluating the performance of CO2 Emission (CE) and Investment Value (IV) of Green Roof shape Integrated Photovoltaic System (GRIPV) of a Wooden Detached House using GA. CE and IV acting as evaluation indices were studied. It is an analytical comparative study of searching for efficient GRIPV by maximizing IV and minimizing CE simultaneously. Three typical locations in Japan are taken into account: Sapporo, Tokyo and Naha. We achieved optimal Pareto curve of each location.

To reduce carbon dioxide emissions from buildings, we selected housing shape as research object. By deforming a simplified detached house model, we achieved optimal shape of WDH reducingLCCO2 by Genetic Algorithms (GA).

In this paper, we proposed a simulation methodology for evaluating the performance of CO2 Emission (CE) of Green Roof shape Integrated Photovoltaic System (GRIPV) of a Wooden Detached House using GA. CE acting as evaluating indicator was studied. Three typical locations in Japan are taken into account: Sapporo, Tokyo and Naha. Optimal solution of each location was achieved.

Considering problems in the processes of roof design, a system for evaluating the performances of roofs is presented in this paper. Based on a basic analysis of the primary geometric figures, which simplified from 10 roofs of Japanese Wooden Detached House (WDH), application of the Topology theory in roof design is founded. Adapting the continuous transformation character of Topology theory, Genetic Algorithm (GA) is selected to have simulations on varied roofs derived from a suitable Basic Model (BM) and utilized to search for efficient roof for meeting our Indices. To certificate the validity of the developed system, a sample trail by operating a Curved Roof Surface Model (CRSM) for obtaining an optimal roof to minimization thermal loads from roof is proposed.