Application Of Different Energy-saving Technologies In Buildings Within Moderate Climate Zone

Building energy consumption is one of the main consumption industries of energy consumption in China.Moderate climate zone is located in low latitude plateau areas in China with small annual temperature difference and temperate climate.it is generally considered that there is no need to improve indoor air quality.In fact,the solar radiation illuminance in moderate climate zone is high so that the indoor air in large public buildings is dry and hot in summer.there is a certain demand for cooling.In Temperate zone,the altitude is high so that the number of heating degree-days in winter is more than 90 days.The diurnal temperature range is large.The wind speed is high in winter which increases the cold air permeability of buildings.There is a certain degree of heating demand in moderate climate zone.At present,with the continuous improvement of the overall economic level in moderate climate zone,people’s requirements for indoor air quality are also gradually improved.New requirements are put forward for the development and application of building energy saving technology.In this study,a teaching office building in a university in Kunming City was selected as the target building.The application of different building energy saving technologies in the target building was analyzed.The exterior wall energy saving technology,air source heat pump,indirect evaporative air conditioning and photovoltaic power generation technology were selected as the common energy saving technologies for public buildings in moderate climate zone.Then the energy consumption of different building energy saving technologies in the target building was analyzed.The application effects of each technology and its applicability in moderate climate zone were evaluated.Finally,the study summarizes the rules of application of energy-saving technology in buildings in moderate climate zone.The study also proposes a scheme for rational application of energy-saving technology in a building in moderate climate zone.It contains adjusting the thermal performance parameters of building envelope to the standard limits of Standard,adding adjustable sunshade structure in the outer space of the building,strengthening thermal insulation in the inner space,improving the energy saving potential of the building itself.The application of rooftop photovoltaic power generation system can meet the annual energy demand of 30% of the building.In summer,the building space with large area and high use coefficient adopts indirect evaporative refrigeration air conditioning.The small building space adopts split air conditioning.Heating assisted air source heat pump system is used in winter cooling technology.This study uses Energy Plus to simulate energy consumption of a teaching office building in a university in Kunming City.By simulating the application of different energy-saving technologies in the target buildings,the energy-saving effects of different technologies are analyzed.The building energy-saving technologies suitable for public buildings in the study are explored,so as to achieve energy conservation and emission reduction in the building industry.Some suggestions on the application of building energy saving technology are put forward to realizing the "carbon peaking and carbon neutrality goals".