外文翻譯---空氣-水風(fēng)機(jī)盤(pán)管系統(tǒng)關(guān)鍵問(wèn)題分析(完整版)
【正文】 sistance and resistance of the device is less than 1/3 when the applicable ISO the scheduling system, or is used with the process air conditioning building scale more and more big, if not the specific specific analysis are the same way system of words, will not only increase the air conditioning the initial investment and thermal loss of the system, also can make effective use of the building space less. When the use of building functional diversification, load characteristic is not A premise, is not suitable with the process system. Because we are using the same process system is intended to ensure the hydraulic balance, ensure each end fan coil water end of the same. While the system load characteristics of different,Water allocation each end it is not balanced, this kind of situation Under the same way system cannot play the advantages with the process system. While regulation and is now automatic control technology and the performance of the valve is getting better and better,Install static control valve, fan wheel solenoid valve can be installed on the water return pipe, the static control valve with a onetime adjustment valve, can be water on all waterways branch adjust the amount of. We can also use the terminal fan coil water solenoid valve installation tube, the water pipe installation of dynamic regulating valve mode to ensure the water distribution system, the dynamic adjusting valve function is the guarantee of the solenoid valve pressure before the valve, and the electromagic valve fully open fan coil long as we are all water branch pipe under the same temperature, evaporating pressure R134a is lower than R12,The refrigerant suction to reduce weight, but also make the pressionto reduce the gas transmission coefficient machine, double negative impact for the refrigerating capacity ring. 36 ℃ environment, condensing temperature R134a is higher than R12 ~1kg/cm2, power consumption will increase the pressor, reduce the . At 36 ℃ environment, the cooling capacity of the different evaporation temperature,R12 is low, about R12 system is about 85%, and our calculation results are in good agreement, The condensation pressure R134a is higher than R12, the power consumption is higher than that of R12 system. When the evaporation temperature is low,Two are consistent, should be due to low evaporation pressure, R134a. 5 Suction decreases due to. R134a refrigerant refrigeration equipment, refrigeration coefficient than the R12 system to reduce a lot of. Figure 6 shows the pressor the refrigeration coefficient, namely the cooling capacity and the pressor power consumption ratio. Never will power auxiliary equipment i
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