Thermodynamic analysis of periodic operation ammoniawater absorption refrigeration units in atmospheric water generation systems
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Дата
2020
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Анотація
The usage of heat absorption water-ammonia refrigeration units in
atmospheric water generation systems is considered. A basic design of periodic
operation AWRU is described. A method for thermodynamic calculations and analysis
of AWRU PO cycles and modes of operation is presented. Specific refrigerating
capacity depending on the composition of water-ammonia solution, the temperature of
the heating source, the ambient temperature of the environment is calculated. It is
shown that increasing the temperature of the heating source from 65°C to 95°C leads
to minimum temperature in the cooling zone decreasing from 7°C to -17°C. Lowtemperature
ambient air at 25°C enables attaining the maximum value of refrigerating
capacity of AWRU PO by increasing the proportion of ammonia in the initial
composition from 0.3 to 0.5, and this enables lowering of the heating temperature from
95°C to 65°C.
Опис
Kravchenko V. Thermodynamic analysis of periodic operation ammoniawater absorption refrigeration units in atmospheric water generation systems / V. Kravchenko ; supervisor O. Vasyliv // Black Sea Science 2020: proc. of the Intern. Competition of Student Scientific Works / Odessa National Academy of Food Technologies; eds. B. Yegorov, M. Mardar [et al.]. – Odessa: ONAFT, 2020. – P. 491–499 : fig. – Ref.: 2 tit.
Ключові слова
ammonia-water absorption, periodic operation refrigerator, thermodynamic analysis, atmospheric water generation