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应用概率论方法,定义了3种计算通断控制风机盘管水系统总开启率的方法,分别为实际检验法、加权平均法和二项分布法。通过对数学期望和方差的比较分析,得到总开启率的变化范围:实际检验法等于二项分布法小于加权平均法。在实际工程应用中,由于二项分布法不需要计算每个时刻风机盘管开启个数的概率,应优先考虑。
Using the method of probability theory, three methods for calculating the total opening rate of the fan-coil water system are defined, which are the actual test method, the weighted average method and the binomial distribution method respectively. Through the comparative analysis of mathematical expectation and variance, the range of total open rate is obtained: the actual test method is equal to binomial distribution method is less than the weighted average method. In practical engineering applications, due to the binomial distribution method does not need to calculate the probability of fan coil open number of each moment, priority should be given.