Estimation of low-potential heat recuperation efficiency of smoke fumes in a condensation heat utilizer under various operation conditions of a boiler and a heating system
- Авторы: Ionkin I.1, Ragutkin A.1, Luning B.2, Zaichenko M.3
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Учреждения:
- Moscow Technological University
- Clean Air Technologies AB Co.
- Moscow Power Engineering Institute (MPEI, National Research University)
- Выпуск: Том 63, № 6 (2016)
- Страницы: 439-444
- Раздел: Steam Boilers, Energetic Fuel, Furnace Facilities, and Auxiliary Equipment of Boilers
- URL: https://journals.rcsi.science/0040-6015/article/view/172310
- DOI: https://doi.org/10.1134/S0040601516060033
- ID: 172310
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Аннотация
For enhancement of the natural gas utilization efficiency in boilers, condensation heat utilizers of low-potential heat, which are constructed based on a contact heat exchanger, can be applied. A schematic of the contact heat exchanger with a humidifier for preheating and humidifying of air supplied in the boiler for combustion is given. Additional low-potential heat in this scheme is utilized for heating of the return delivery water supplied from a heating system. Preheating and humidifying of air supplied for combustion make it possible to use the condensation utilizer for heating of a heat-transfer agent to temperature exceeding the dewpoint temperature of water vapors contained in combustion products. The decision to mount the condensation heat utilizer on the boiler was taken based on the preliminary estimation of the additionally obtained heat. The operation efficiency of the condensation heat utilizer is determined by its structure and operation conditions of the boiler and the heating system. The software was developed for the thermal design of the condensation heat utilizer equipped by the humidifier. Computation investigations of its operation are carried out as a function of various operation parameters of the boiler and the heating system (temperature of the return delivery water and smoke fumes, air excess, air temperature at the inlet and outlet of the condensation heat utilizer, heating and humidifying of air in the humidifier, and portion of the circulating water). The heat recuperation efficiency is estimated for various operation conditions of the boiler and the condensation heat utilizer. Recommendations on the most effective application of the condensation heat utilizer are developed.
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Об авторах
I. Ionkin
Moscow Technological University
Автор, ответственный за переписку.
Email: ionkinil@mail.ru
Россия, pr. Vernadskogo 78, Moscow, 119454
A. Ragutkin
Moscow Technological University
Email: ionkinil@mail.ru
Россия, pr. Vernadskogo 78, Moscow, 119454
B. Luning
Clean Air Technologies AB Co.
Email: ionkinil@mail.ru
Швеция, Tеgagatan 12A, SE_252 22, Helsingborg
M. Zaichenko
Moscow Power Engineering Institute (MPEI, National Research University)
Email: ionkinil@mail.ru
Россия, ul. Krasnokazarmennaya 14, Moscow, 111250