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对于现有型式的散热器热水采暖系统,无论计算温度为95/70℃,还是130/70℃,在计算管径时都采用相同的水力平衡原理。但有些人却有不同的看法,认为不论计算温度如何都必须按95/70℃的条件计算才行。据说:“若用户系统的进、出口计算温差愈大,则立管和散热器支管的压力损失与干管的压力损失的比值就愈小,因而用户系统的水力稳定性也就愈差。如果说用热媒计算温度为95/70℃设计的室内采暖系统在初调整时已经感到困难的话,那末,用130/70℃设计的室内采暖系统就根本无法调整了。实际
For the existing type of radiator hot water heating system, regardless of the calculated temperature of 95/70°C or 130/70°C, the same principle of hydraulic balance is used when calculating the pipe diameter. However, some people have different opinions and believe that regardless of the calculated temperature, it must be calculated according to the condition of 95/70°C. It is said that: "If the temperature difference between the inlet and outlet of the user’s system is greater, the ratio between the pressure loss of the riser and the radiator branch pipe and the pressure loss of the trunk pipe will be smaller, and the hydraulic stability of the user’s system will be worse. When the indoor heating system designed with a heat medium calculation temperature of 95/70°C has been difficult to make initial adjustments, the indoor heating system designed at 130/70°C cannot be adjusted at all.