THE CHOICE OF HEAT EXCHANGERS FOR THE VENTILATION SYSTEM OF BUILDINGS
Journal Title: Збірник наукових праць Українського державного університету залізничного транспорту - Year 2018, Vol 180, Issue 14
Abstract
The article deals with the problems of calculation and selection of recuperators, which are installed in the ventilation system of buildings of public catering establishments. In article razganata problem rozrahunkiv wyboru heat exchangers, that ustanovlyuvalysya in the ventilation system Budivel zakladu gromadska harchuvannya In the process of ventilation from the room is utilized not only waste air but also a portion of the thermal energy. In winter, this leads to an increase in energy bills. Heat recovery in centralized and local ventilation systems will allow to reduce unnecessary costs, not to the detriment of air exchange. Different types of heat exchangers are used for heat energy recovery. The article considers the problems of analysis and selection of heat exchangers that are installed in the ventilation system of buildings of public catering establishments working Principle of any heat exchanger supply and exhaust units is as follows. It provides heat transfer (in some models – and cold exchange, as well as moisture exchange) between the flows of supply and exhaust air. The process of heat exchange can occur continuously - through the walls of the heat exchanger, with the help of freon or intermediate coolant. The heat exchange can be periodic, as in the rotary and chamber recuperator. As a result, the exhaust air emitted is cooled, thus heating the fresh supply air. The process of cold exchange in some models of recuperators takes place in the warm season and allows you to reduce energy consumption for air conditioning systems due to some cooling supplied to the room supply air. Moisture exchange is between the streams of exhaust and supply air, allowing you to maintain a comfortable room for human humidity year-round, without the use of any additional devices – humidifiers and others.
Authors and Affiliations
Anna Tkach, Evgenia Suchkova, Vlad Sinchuk
Keywords
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