Утилізація теплоти відпрацьованих газів котлів у комбінованих тепло- і масообмінних апаратах

• Date: 2011
• Main Authors: Tuz V.E., Trokoz Ya.E., Lebed N.L.
• Format: Article
• Language: Ukrainian
• Published: General Energy Institute of the National Academy of Sciences of Ukraine 2011
• Subjects: теплообмін; масообмін; теплообмінні апарати; плівка рідини; канал з сітчастим покриттям стінок.
• Online Access: https://systemre.org/index.php/journal/article/view/410
• Journal Title: System Research in Energy

Promising direction in energy saving is to increase the efficiency of usage of hydrocarbon fuel in the boilers at the expense of deep heat utilization, ie, using the heat of condensation of water vapor. The most optimal disposal system is a system that combines heat exchangers of two types: surface and contact. The possibility of such combinations is determined by analysis of heating scheme in each case.Cooling of exhaust gases to a temperature which should be more than dew point temperature, it is advisable to conduct in regenerative heat exchangers type. Further utilization of heat – in the contact devices in which the first is the process of convective heat-mass exchange (cooling gases to a temperature of fluid), and continuing contact this process is complicated by water condensation.A system of deep heat of exhaust gas is considered, which combines surface and contact heat exchangers.Introduced the results of experimental study of the basic parameters of heat carriers on cooling process gas flow by isothermal liquid film in a regular nozzle (channel with mesh surface) of contact devices. Empirical dependencies, obtained from experimental studies used in the calculation of contact type devices.