【 Weak current college 】 building energy-saving technology measures

Building energy-saving technology measures
1 envelope energy-saving technology
Wall with glass wool, rock wool, polystyrene, polyurethane foam and polyethylene plastics, new high-efficiency heat-insulating materials and composite wall, lower wall heat transmission coefficient.
Taken to increase the window glass floors, Windows adds transparent polyester film, installation of window and door seal, the use of low-e glass (low-e glass), package glass and insulating properties of plastic Windows, doors and Windows to improve insulation performance, effectively reducing indoor air and outdoor air heat conduction.
Highly efficient thermal insulation materials and thermal insulation-thermal insulation of roof, overhead roof, pumice sand insulation-thermal insulation of roof and inverted roof and other energy-saving roof. In the South East and heat in summer and cold winter region roof sunshade with roof insulation.
A comprehensive account of building ventilation, sunshade, natural lighting and other building envelope optimization of integrated energy-saving technology.　　For example, double-wall technology is the middle with adjustable sun visor, and ventilation, can be effective in the summer sun and heat, ventilation in winter and allows sunlight through the reduction of heating load. 2. energy-saving control of the system
Heating and air conditioning system control technology is on the existing heating network system and building energy system for energy saving, energy-saving control to achieve the optimum operation of key technologies.　　There are three main ways: VWV (vwv), VAV (variable air volume) and VRV (variable capacity), and its key technology is based on the heating, air conditioning system in the cold (hot) source-transmission and distribution system-terminal equipment "all links in the physical properties of the control. 3. heat pump technology
Heat pump technology is the use of low temperature heat energy resources, the use of heat pump principle, by a small amount of high energy input, low heat energy to high heat transfer of technologies, mainly in the air-source heat pump technology and water () the heat pump technology.　　The heating and cooling of buildings, effectively reduce building energy consumption for heating and cooling, while reducing environmental pollution. 4. adjustable heating terminal device technology
Includes adjustable end heat and heat metering device, connect each radiator of thermostatic valve, the appropriate heating control adjustment technology and frequency pump application, etc.　　30%-50% energy saving effect, while avoiding the end of the cold heat heating are not. 5. fresh air treatment and air conditioning systems with heat recovery technology
Fresh air load general accounting for the total load of building of about 30%-40%. Constant fresh air volume required cooling capacity than the fixed minimum ventilation rate required cooling less 20%. The new amount of wind to fresh air from the smallest to the fresh air change, spring quarter can save nearly 60 per cent of energy consumption.　　Through all the hot heat exchanger will air conditioning room and outdoor hot and wet Exchange, the use of air conditioning room cooling and dehumidifying, air conditioning system with heat recovery. 6. independent desiccant air conditioning power saving technology
Central air conditioning energy consumption by 40%-in, 50 per cent to dehumidify. Chilled water supply temperature by 1 ° c, efficiency can be increased 3 percent. Use of desiccant independent way bonding air-conditioning heat recovery, central air conditioning energy consumption can be reduced by 30%.　　China has successfully developed solution-independent desiccant air conditioning way of key technologies to low temperature heat source to power efficient dehumidification. 7. various radiation-heating and air conditioning terminal units and energy-saving technology
Radiant floor, ceiling radiant, vertical plate radiation is the main radial heating. You can avoid blowing sense while using high-temperature cooling and low-temperature heat source, greatly improving the efficiency of the heat pump.　　In a low temperature waste heat, ground water, low grade renewable heat and cold sources, this way you can work directly with the end of the heat and cold sources, eliminating the common cold and heat sources. VIII. construction electricity co-generation
On the basis of the cogeneration increased refrigeration equipment, the formation of cogenerated system. Refrigeration equipment mainly absorption chillers, cooling with heat from cogeneration system quantity of heat.　　And direct use of natural gas boiler heating, natural gas-fired air conditioner refrigeration, power supply, the way to reduce primary energy consumption is 10%-30%, while also reducing transmission process line loss. 9. PCM technology
PCM technology with storage density is high, the transformation temperature is close to a constant temperature, etc., can provide very high heat storage, storage capacity, and the system is easy to control, which can effectively solve the energy supply and demand time mismatch problem.　　For example, in the heating and air conditioning system applications PCM technology, is the power of "peak load shifting" of important ways; in the building envelope in PCM technology, you can reduce the room air-conditioning load. 10. solar integration architecture
Solar integration architecture is solar energy utilization trends.　　The use of solar energy for buildings provide domestic hot water, winter heating and summer air conditioning, and can be combined with PV cell technology for building power supply. XI. evaluation method of building energy consumption
The whole building for every household energy consumption as a starting point to evaluate the thermal performance of buildings. In considering climate conditions, heat transfer, building towards, wall material performance, doors and Windows performance, building of thermal inertia, the adjacent room coupled heat and fresh air requirements, user habits, as well as heating and air conditioning and other construction equipment selection and use, and other factors, on the basis of the energy requirements of buildings.　　For real estate developers and users in the development, purchase and use of energy efficient buildings and construction equipment, energy information service. XII. use energy-saving products
Purchase and use of national energy efficiency standards for energy-efficient air conditioning, refrigerator, lighting equipment, fans, pumps, etc., to reduce the energy consumption of buildings.