Influence of the outlet air temperature on the thermohydraulic behaviour of air coolers

The determination of the optimal process conditions for the operation of air coolers demands a detailed analysis of their thermohydraulic behaviour on the one hand, and the estimation of the operating costs, on the other. One of the main parameters of the thermohydraulic behaviour of this type of eq...

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Bibliographic Details
Published in:Hemijska industrija 2003, Vol.57 (4), p.159-164
Main Authors: Djordjevic, Emila, Serbanovic, Slobodan, Milosevic, Dejan, Tasic, Aleksandar, Djordjevic, Bojan
Format: Article
Language:English
Subjects:
Air coolers
Air temperature
Condensation
Coolers
Cooling
Heat transfer
Heat transfer coefficients
Operating costs
Power consumption
Pressure drop
Sound pressure
Temperature
Thermohydraulic calculations
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Summary:The determination of the optimal process conditions for the operation of air coolers demands a detailed analysis of their thermohydraulic behaviour on the one hand, and the estimation of the operating costs, on the other. One of the main parameters of the thermohydraulic behaviour of this type of equipment, is the outlet air temperature. The influence of the outlet air temperature on the performance of air coolers (heat transfer coefficient overall heat transfer coefficient, required surface area for heat transfer air-side pressure drop, fan power consumption and sound pressure level) was investigated in this study. All the computations, using AirCooler software [1], were applied to cooling of the process fluid and the condensation of a multicomponent vapour mixture on two industrial devices of known geometries. Utvrdjivanje optimalnih procesnih uslova za rad vazdusnih hladnjaka zahteva sa jedne strane detaljnu analizu termohidraulickog ponasanja aparata, a sa druge analizu troskova njegovog funkcionisanja. Jedan od kljucnih parametara koji odreduje termohidraulicko ponasanje odredenog aparata je izlazna temperatura vazduha. U radu je ispitan uticaj izlazne temperature vazduha na performanse vazdusnih hladnjaka (koeficijent prelaza toplote sa strane vazduha, koeficijent prolaza toplote, potrebnu povrsinu za toplotnu razmenu pad pritiska sa strane vazduha, snagu motora ventilatora i nivo buke). Sva izracunavanja su izvrsena pomocu programskog paketa AirCooler [1] i primenjena na dva aparata iz industrijske prakse, poznatih dimenzija, i to za proces hladenja jednofaznog fluida i proces kondenzacije visekomponentne parne smese.
ISSN:0367-598X
2217-7426
DOI:10.2298/HEMIND0304159D