THE UNDERGROUND THERMAL NETWORKS HEAT LOOSING DEFINITION TAKING TO ACCOUNT THE SOIL MOISTURE
Keywords:
energy efficiency, buried pipelines, heating systems, heat loss, soil moisture.Abstract
The actuality of energy efficiency investigation for heating networks that are used at heat supply organizations is considered. It’s done in order for abnormal heat losses detection and nominal level of heat losses evaluation. The methodology of normative heat losses in heat networks calculating in accordance with the normative documents requirements is analyzed. It is adjusted that for objective estimation of energy efficiency for the heating networks of host-based heating systems it needs an all-round implementation of heat energy instrument gages. Also it needs a refinement and actualization of methodological base for heat loses in buried heating networks location due to the registration on heat energy instrument gages that are placed directly at heating systems or heat consumers. Classification of moisture conditions for thermal coating of the heating network pipelines for each construction type is described. Based on comparative analysis of the specific heat losses in segment of buried heating pipe it is showed a substantial impact of soil moisture for actual heat losses deviation. The methodology for heat losses calculating in buried heat networks with the impact of soil moisture including is improved.
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