Fahimeh Rezvani - University of Zaragoza – CIRCE Research Institute, Maria de Luna ۵, ۵۰۰۱۸ Zaragoza, Aragon, Spain
Ignacio Zabalza Bribián - University of Zaragoza – Department of Mechanical Engineering and CIRCE Research Institute, Maria de Luna ۵, ۵۰۰۱۸ Zaragoza, Aragon, Spain

The paper literally works on the parameters regards to the windows, then focus on the energy efficiency and study on the future windows technology, zero windows energy, integrate surface, dynamic windows, highly insulating windows and concentrate on the vacuum glazing windows because of its importance. Also, discuss some subject about thermal optimization of windows and the marketing of new windows. Houses consume a significant section of the overall energy in the world. Apply to renewable energy in houses and energy preservation able to go along a path in extending the fossil fuels life and cleaning the environment. Designing windows properly, not only enhance the inside thermal environment but also supply natural ventilation and daylight.A growing concentration on energy consumption, does particularly traditional windows vulnerable. The windows are responsible for 15-22% of the heat lost in the houses, even though it will differ significantly from house to house, based on the number and size of openings of the exterior wall zone. The vacuum glazing is the most impressive alternative with the best thermal performance and slim profile. The studies demonstrate that single glazed with secondary glazing is approximately as efficient as vacuum glazed windows. The function of glazing is based on the gas kind such as Xenon, Krypton and Argon and the Low-E emissivity.One method of obtaining the high rank of thermal insulation is to gas deplete from the cavity among the glasses. As a total, the future zero energy windows technology has the potential for improving energy efficiency, saving the natural gas and peak electricity. Moreover, by using policy, R&D and continuing basic method, the manufactures will require combining a series of alternative enhancement plan alternative to improve the applying these new technologies. As the potential of energy saving is in wide ranges and make a resolution for choosing the appropriate windows that have a great and long course time influence incorporated with windows lifespan between 20 and more than 50 years. By applying draught proofing and secondary glazing the heat lost decreased significantly

Future windows technology-Energy efficiency-Vacuum glazing windows