Hot water heating system design for long and huge plant building

Taking the heating project of a train equipment warehouse as an example, based on the building characteristics and the layout conditions of outdoor heat supply network, proposes a set of big and small reversed return heating system. Divides the big and small heating systems reasonably, and controls the number of risers and the loop effect radius of the small system in a reasonable value. Ensures that the unbalance rate between the parallel loops of the big and small systems is less than 15% and the big and small systems achieve good hydraulic conditions. Practical test indicates that the heating system works well, which can provide a reference for similar engineering design.