The use of contact heat generators of the new generation for heat production

Gennadii Varlamov,Kateryna Romanova,Mykola Ocheretyanko,Olga Daschenko,Stanyslav Kasyanchuk

doi:10.15587/1729-4061.2016.86088

Abstract

We substantiated the need for searching for, and realization of, fundamentally new approaches, using more efficient physical, heat-mass-exchanging and aerodynamic processes, which will make it possible to improve energy effectiveness and ecological cleanliness of heat generation in the systems for individual and decentralized heat supply. For the heat supply to large cities and industrial regions, we examined the advantages of using highly efficient contact heat-generators of different types, which include compactness due to low metal consumption and, as a result, attractive price. It is proposed to use a heat-generator of contact type of the new generation, with the aid of which it was possible to solve a set of problems on the qualitative combustion of fuel and effective heat exchange of gases with the heated water. The use of tubular technology for the combustion of gas is its special feature. Due to it, quality heat exchanging characteristics are provided. In view of further studies, we presented the relevance of creating heat-generators with the use of highly effective hydrogen technologies, which will make it possible to devise the new energy paradigm of heat supply for residential areas and industrial zones through the possibility of accumulation of electrical energy and accumulation of hydrogen.

Highlights

The advantages of the centralized heat supply in large cities and large industrial centers by the indicators of energy effectiveness and the possibilities of attaining high level of ecological safety are well-known [1]
Water heating takes place through direct complex contact of gases in the gas volume of the plant due to water spraying and contact of gases with the water film that flows down the perforated corrugated cap. This method of heat mass exchange provides for high specific heat exchange characteristics in contact modular heating unit (CMHU) – 300 m2 of heat exchange surface per 1 m3 of the cap’s volume, which makes it possible to cool flue gases to the temperatures considerably below «the dew point», to improve the process of condensation of water vapors from the combustion products at any thermal loads and to use this condensation heat of purposefully
heat-generators of the contact type (HCT) have low thermal inertia, which characterizes them as apparatuses with the capacity of rapid start and rapid stop

Summary

Introduction

The advantages of the centralized heat supply in large cities and large industrial centers by the indicators of energy effectiveness and the possibilities of attaining high level of ecological safety are well-known [1]. There are objective reasons to this: in the large cities and industrial regions the old centralized systems of heat supply are morally and physically obsolete and worn-out, but simultaneously, in this case, they gave rise to ecological problems of atmospheric pollution, they require serious ca pital expenditures for maintaining their operational mode. The density of buildings in the cities increases and this further complicates the process of quality heat supply. The process of designing new city blocks for new industrial, social and everyday-activity centers is complicated.

Methods

Results

Conclusion