方案2是以天然气作为燃料，采用热水锅炉实现冬季供热，以电为动力、采用离心式冷水机组实现夏季供冷。
Plan 2 is that heating in winter by water heaters using natural gas for fuel and cooling in summer by power driven centrifugal water cooler.
本文对复合循环热水锅炉水动力计算方法进行了理论推导，并给出了计算实例。
This paper deals with a theoretical study of the hydrodynamic computatation method for use bined circulation hot-water boiler with specific calculation, examples being given.
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