Abstract.The purpose of this project is to study the feasible economic use of materials structure energy saving a single storey house floor. With the shaping machine for simple help in decision making. The data was used in the study. From the materials and the information from the table. The study and analysis by using the program. The choice of material, structure, energy saving, instead of building structure model that does not use equipment energy-saving to compare the value in economics, and the heat transfer through the กรอบอาคาร. OTTV and the overall heat transfer of building roof RTTV by using mathematical calculation. Returns the total loss of the building and the roof. Should change to use energy saving structural materials The data was compared between the 2 value. That should change the use of materials, reasonable and worth the investment.The study found that When changing from material structures that do not use energy-efficient appliances. A structural material energy saving The cost is increased because of the original building material structure that does not use energy saving equipment price cheaper materials structure energy saving. Because the accessories used in building structures, reduce the heat into the building, so the prices are higher. Just when compared to payback and value in economics of the accessories used in the structure, it was found that worth the investment.The results of the analysis indicate that both 2 cases. Material selection structure energy saving can reduce the overall heat transfer of the building and the roof than the use of structure building materials that do not use energy-efficient appliances. So, changing from material structures that do not use energy-efficient appliances. A structural material energy saving Can help to reduce heat transfer with a payback and value in economics faster.
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