Energy-saving measures for central air-conditioning system in building application~

According to statistics, in buildings with central air-conditioning, the energy consumption of central air-conditioning accounts for about 60% of the total energy consumption of the building. At the same time, there is a huge waste of energy in the actual operation of these air-conditioning systems. Therefore, the energy-saving problem of central air-conditioning systems is more serious. It has been paid more and more attention. Air-conditioning maintenance manufacturers propose energy-saving measures for central air-conditioning systems from the following aspects for your reference.

The reasonable design of the air-conditioning system is the prerequisite for realizing the energy-saving of air-conditioning. First of all, specific design conditions should be considered when designing. At the same time, the influence of system operating conditions and partial load system performance should be emphasized, and appropriate cooling and heating source equipment should be selected according to actual load conditions. Excessive design of the cooling and heating load of the air conditioning system, low efficiency operation, waste of energy, will also lead to increased investment. Secondly, a variable air volume system is adopted to reduce the energy consumption of the air conveying system. According to data, the use of a variable air volume system can save energy up to 30%, and at the same time improve the comfort of the environment. Third, the design of the air-conditioning water system should adopt the design method of large temperature difference and small flow rate to reduce power consumption, because most of the time during operation, the actual temperature difference is smaller than the design temperature difference, and the actual flow rate greatly exceeds the design flow rate, and the water pump power consumption greatly increase.

Energy-saving measures for central air-conditioning operation are the key. First of all, all air-conditioning equipment adopts frequency conversion and other central automatic control technology, according to temperature control, humidity control, pressure difference control, and flow control to make the equipment achieve a better matching operation effect and achieve greater energy saving. Second, strengthen daily and regular maintenance of air-conditioning components, regular descaling or ash removal of heat transfer surfaces of heat exchange equipment such as condensers, and regular cleaning of filters, decontamination devices and other equipment. Third, the training of operators should be strengthened to improve the quality of management personnel. The technical quality of operators is directly related to the implementation of various adjustment and energy-saving measures. In addition, the implementation of metered charges for central air-conditioning can effectively increase the energy-saving enthusiasm of air-conditioning users and is also an effective measure for air-conditioning energy conservation.

For the central air-conditioning system, the air-conditioning load through the maintenance structure occupies a large proportion. Research shows that increasing the thermal insulation performance of the envelope structure can reduce the design load of the central air-conditioning system and reduce the annual operating cost of the central air-conditioning system. First of all, rationally design the window structure. The Shanghai central air-conditioning engineering manufacturer feels that for buildings with relatively large window areas, they should consider using heat-absorbing glass, heat-reflective glass or sun-shading measures, such as sun visors, eaves, overhanging eaves, overhanging balconies, and shutters. Boards, curtains, etc. Second, improving the air tightness of doors and windows can effectively reduce the energy consumption of air conditioners. Third, the use of energy-saving building materials can effectively reduce heat dissipation through the enclosure structure, thereby reducing the capacity of major equipment and achieving significant energy-saving effects. In addition, by coating light-colored, high-reflectivity materials on the surface of ordinary roofs, the solar reflectivity of the roof is improved, and the absorption of solar heat is reduced, so as to reduce the cooling load of the air conditioner and save the energy consumption of the air conditioner.