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Application of Electromagnetic Energy Meter in Central Household Air-conditioning Measurement

Application of Electromagnetic Energy Meter in Central Household Air-conditioning Measurement

中央空调分户计量技术 ,通过计量一方面可以倡导用户合理使用空调,主动节能,避免浪费现象;另一方面通过合理计量费用分摊,解决物业管理公司收费难的问题,用户“多用多出、少用少出”,做到收费有据可依。 With the promulgation of a series of national energy-saving policies and regulations, centrally-cooled public buildings are increasingly applying central air-conditioning household metering technology . Through metering, on the one hand, users can promote the rational use of air-conditioning, actively save energy, and avoid waste; On the other hand, through the reasonable measurement of cost allocation, the problem of difficult charging by property management companies is solved. Users "use more and more, less use and less output", so that fees can be supported by evidence. 能量表 的读数评估制冷机组的实际供冷能力,根据历史数据建立数据库,通过实际数据分析研究大型公共建筑的节能潜力,从而实施对大型公共建筑实施节能改造。 The deeper meaning is to evaluate the actual cooling capacity of the refrigeration unit through the readings of the energy meter , establish a database based on historical data, and analyze the energy-saving potential of large public buildings through actual data analysis, thereby implementing energy-saving renovation of large public buildings.

                                         
       
Although "cold" and water, electricity, and gas have the same commodity attributes in a market economy and society, in terms of measurement, it is more complicated and difficult to charge than water, electricity, and gas that have already entered the market and succeeded. 能量表 计量为主,其原理是:在承担某一计量区域的空调供、回水管上各安装一支温度传感器(配对使用),测量供、回水温度,在回水管上安装一台流量计,分别测得载冷剂——水的进出口的温度和流量,再经过密度和焓值的补偿及积分计算,得到所消耗的“冷”量值。 Large-area (same owner) air-conditioning measurement is mainly based on energy meter measurement. Its principle is: install a temperature sensor (paired) on the air-conditioning supply and return pipe that undertakes a certain measurement area to measure the supply and return. Water temperature, a flow meter is installed on the return pipe, and the temperature and flow of the refrigerant—water inlet and outlet are measured separately, and then the density and enthalpy value are compensated and integrated to obtain the "cold" amount consumed. value.
电磁式能量表 Mechanical energy meters are generally considered unsuitable for air-conditioning metering. When ultrasonic energy meters are used, electromagnetic energy meters have appeared . The electromagnetic energy meter mainly uses an electromagnetic flowmeter. V 成正比的感应电动势 E Its working principle is based on Faraday's law of electromagnetic induction. When a conductive liquid flows through a measuring tube surrounded by a magnetic field, an induced electromotive force E is proportional to the average flow velocity V in a direction perpendicular to both the flow direction and the magnetic field . The electromagnetic flowmeter includes pipeline type and plug-in type.

      Summary: As the demand for basic energy and its price increase, the operating costs for high-energy-consuming equipment such as central air conditioning continue to increase. If no measurement assessment or strengthening of energy conservation awareness is adopted, central air conditioning will become a central energy source in buildings. Consume the largest proportion. 电磁式能量表 对中央空调进行科学的计量,从而实现中央空调运行费用的合理分摊,促使用户按需使用,按用量交费。 Therefore, in appropriate occasions (such as the use of central air-conditioning in a large area), the electromagnetic energy meter is used to scientifically measure the central air-conditioning, so as to achieve a reasonable allocation of central air-conditioning operating costs, and promote users to use on demand and pay according to usage.


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