Optimizing factors of the temperature schedule of heat release in municipal thermal energy systems. part 1. Minimization of heat loss with boiler waste gases
DOI:
https://doi.org/10.31548/energiya2022.04.055Abstract
The reason for the ambiguous assessment of high-temperature modes of heat release is the influence of the heat carrier temperature in the return pipeline on the work efficiency and thermodynamic efficiency of heat sources in centralized heat supply systems (CSTs). Non-productive heat losses due to heat losses with waste gases.
The purpose of the research is to substantiate the feasibility of implementing the utilization of the heat of combustion products in a condensing heat exchanger-utilizer.
The results of the calculations confirm that a significant reduction in heat loss with waste gases and a corresponding increase in the efficiency of the unit can be achieved if the temperature of the waste gases after the heat exchanger is reduced below the dew point. Without the introduction of condensing boilers or condensing heat exchangers-utilizers and without changing the method of regulation, the transition to a low-temperature heat release schedule will only lead to a deterioration of the overall efficiency of the heat supply system.
Key words: heat release, high-temperature mode, heat loss with waste gases, heat exchanger-utilizer
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