A small hotel with more than 40 rooms needs water supply and heating. What kind of boiler is suitable for burning coal?

Hotel standard rooms are 20 square meters each, with a heating area of 800 square meters.

Guest bath water is 50 kg per person, and the water consumption is 50*2*40=4000 kg. In winter, the water supply temperature is 5 degrees and the bath water temperature is 42 degrees.

Power of heating boiler: 0.09 MW/hour

The power of the water supply boiler is 0.1.2 MW ∕ h (bathing is generally concentrated in the 2-hour interval).

Total boiler power: 0.09+0.12 = 0.21MW ∕ h.0.3t/boiler.