Building energy efficiency testing is a critical process that ensures the completed project meets national energy conservation standards. It involves a series of assessments and measurements to evaluate the overall performance of the building’s systems. According to the GB 50411-2007 "Building Energy Conservation Engineering Construction Quality Acceptance Specification," several key parameters are tested, including indoor temperature, hydraulic balance of the outdoor heating network, water supply rate of the heating system, heat transfer efficiency of the outdoor pipe network, air volume at each air outlet, total air volume of the ventilation and air conditioning system, water flow rate of the air conditioning unit, total flow of hot and cold water in the air conditioning system, cooling water flow, average illuminance, and lighting power density. These tests help identify areas where energy can be saved and efficiency improved. For public buildings, energy-saving testing follows the JGJ/T 177-2009 "Public Building Energy-Saving Testing Standards." This includes evaluating factors such as the average indoor temperature and humidity, the heat transfer coefficient of non-transparent exterior structures, the actual performance coefficient of chilled water (heat pump) units, consistency of return water temperature in the water system, temperature difference between supply and return water, pump efficiency, energy efficiency coefficient of the cooling source system, power consumption per unit air volume for fan units, fresh air volume, balance of constant air volume systems, and outdoor temperature at the heat source (such as dispatch centers or heat stations). These tests ensure that public buildings operate efficiently and sustainably. Residential building energy-saving testing is guided by the JGJ132-2009 "Energy-saving Testing Standards for Residential Buildings." Key indicators include the average indoor temperature, heat transfer coefficient of main building components, internal surface temperature of thermal bridges in external structures, thermal defects in external walls, insulation structure performance, hydraulic balance of the outdoor pipe network, water supply rate, heat loss rate of the outdoor network, boiler operating efficiency, and power consumption ratio. These metrics help assess how well a residential building conserves energy and maintains comfort for its occupants. Regulating Flow Sphere,L Type Sphere Ball,Electric Control Ball Valve,Change The Way Ball Valve Antong Valve Co.,Ltd , https://www.atvalveball.com