Abstract
A high level of energy-efficient operation of structures can be achieved through automated life-support systems using secondary energy resources. Analysis of thermal emissions in residential buildings allows us to conclude that the most promising for this purpose are wastewater. The process of utilizing the heat of the used water resources entering the sewerage network can be carried out in two types of evaporative heat exchangers: surface and submerged.The increased area and increased heat transfer efficiency create the conditions for the preferable choice of a submersible type storage wastewater-freon heat exchanger. The design of the case of devices of this type allows to obtain a model range by the step change in its diameter. The calculations carried out for the case diameters of 300, 400, 500 mm have shown that at various water flows the best heat exchange parameters are achieved at a diameter of 300 mm, both under conditions of forced and natural convection.
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