【文章內(nèi)容簡介】
tF) to determine the actual running conditions of wind wheel The exports of the state of F, where Qt, Qs are respectively the fan midrange air runtime all hot and cold Quantity and heat Quantity of cold, the cold front is multiplied by is to consider the wind wheel running after a period of of fresh air unit must be based on the Quantity of fresh air is designed to the primary unit model, and then determined according to the cooling unit must bear surface units of the rows of heat exchanger. Similarly in the selection we must carefully than nominal working condition and design condition number of different, and check the correction coefficients corresponding to calculate unit in the design condition .All heat cooling capacity under Qt, and then according to = MF(h0hd) and d=9095% determine the state point of D after treatment of fresh point and F point is determined to determine the air state point S,According to the moisture load heat, we can determine the point is in the allowable range. In order to plete the entire system equipment selection determine the 5 fan coil water system coil water system from the angle of the form classification of different points,There are many kinds of forms. Here I will focus on the same and different process system selection. We have always believed that when the water system the ratio is small, the pipeline resistance 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