The building energy-saving test determines whether the completion acceptance project meets the energy-saving requirements through a series of national standards. GB 50411-2007 "Building Energy-saving Engineering Construction Quality Acceptance Specification" for indoor temperature, hydraulic system outdoor pipe network hydraulic balance, heating system Water supply rate, heat transfer efficiency of outdoor pipe network, air volume of each air outlet, total air volume of ventilation and air conditioning system, water flow of air conditioning unit, total flow of cold and hot water of air conditioning system, total flow of cooling water, average illuminance and lighting power density Wait for energy saving detection. Public building energy-saving testing based on JGJ/T 177-2009 "Public Building Energy-Saving Testing Standards" for building indoor average temperature, humidity, non-transparent outer protective structure heat transfer coefficient, cold water (heat pump) unit actual performance coefficient, water system back Water temperature consistency, water system supply and return water temperature difference, pump efficiency, cooling source system energy efficiency coefficient, fan unit air volume power consumption, fresh air volume, constant air volume system balance, heat source (dispatch center, heat station) outdoor temperature, etc. . Energy-saving testing of residential buildings is based on JGJ132-2009 “Energy-saving Testing Standards for Residential Buildings†for indoor average temperature, heat transfer coefficient of main parts of enclosures, internal surface temperature of thermal bridges of external protection structures, thermal defects of external protection structures, and peripherals Energy-saving detection of insulation structure, outdoor pipe network hydraulic balance, water supply rate, outdoor pipe network heat loss rate, boiler operation efficiency, and power consumption ratio. Flow Meter,Venturi Meter,Air Flow Meter,Orifice Meter Jingsu Huaerwei Science and Technology Group Co.,Ltd , https://www.huaerweiflewmeter.com