In the planning, design, newly built, rebuilding and expansion of), the transformation and use process, implement energy efficiency standards, energy-saving technologies, processes, equipment, materials and products, improve the heating of the heat preservation and heat insulation performance and efficiency of heating, air conditioning and refrigeration heating system, strengthen the operation and management, building environment can use system using renewable energy, on the premise of guarantee the quality of the indoor thermal environment, reduce the heating, air conditioning and refrigeration heating, lighting, hot water supply of energy consumption.