Розмір шрифта:
DETERMINATION OF HEAT ENERGY LOSSES BY UNDERGROUND HEAT PIPELINES TAKING INTO ACCOUNT SOIL MOISTURE
Остання редакція: 2022-10-31
Анотація
The relevance of the energy efficiency study for heat networks of heat supply enterprises in order to identify excess heat energy losses and determine their level is considered. The calculation method of normative heat losses in the heat pipeline is analyzed in accordance with the requirements of normative documents. It has been established that for an objective assessment of the heat pipelines' energy efficiency, the widespread introduction of heat energy metering devices and the improvement and updating of the methodological base for determining heat losses in underground heat pipelines based on the indicators of heat energy metering devices, installed on heat networks and at heat consumers, are required. The classification of the moisture regime of heat pipelines' thermal insulation is given for each type of laying: trench pipe laying, underground laying. On the basis of a comparative analysis of the specific heat loss calculation in the section of the underground heat pipeline, a significant influence of soil moisture on the deviation of the actual losses from the normative ones is shown. The method of thermal energy losses calculating for underground heating pipelines by taking into account the influence of soil moisture has been improved. The final analytical dependences for determining heat losses, taking into account the moisture regime of the heat pipe route, are given. This makes it possible to realize the general saving of energy resources, the ability to determine the energy efficiency of the heat supply system, forecast the consumption of fuel and energy resources in the future, and, most importantly, minimize the loss of energy resources during the transfer of thermal energy to the final consumer.