Low Energy Technology Research And Energy Efficiency Evaluation Of Public Buildings

The implementation of Low-power public buildings is a necessary and effectivemeans to solve the global energy crisis. Because of its energy-saving advantages and low-emission, this kind of buildings does not use the method of burning minerals to provideheat. It is environment friendly. Therefore, Low-power public buildings should bepromoted.By adopting the energy-saving technology of Caofeidian international club, theeconomics of phase change heat storage insulation performance advantages are analyzed.According to the characteristics of phase change materials, they are chosen andcompositing with the architectural matrix are studied. The results show that capric acid isthe optimal one of all samples due to its suitable transformation temperature and relativehigh adsorption proportion of140%on the vacuum condition at60oC in45min. Inaddition, due to the reduction of the phase transition temperature and economicalefficiency, the binary complex phase change materials are much better. For the phase-change thermal insulation mortar, phase change material should be added more to meetthe physical properties of the premise. At last, the added amount of phase changematerials have been identified as16%of the total. For phase change thermal insulationmortar and the general one, the numerical simulation is carried out to verify theadvantages of phase change materials by fluent.The building energy efficiency is used to evaluate Caofeidian International Clubenergy levels, according to its foundation, regulation and selection. According to thecalculations of DeST, the energy saving rate is66.4%. The building meets the three-starstandard of energy efficiency label, and it belongs to Low-power public buildings.