Helix is folded stream board Cheng of heat exchanger carapace conducts heat the

Helix is folded stream board Cheng of heat exchanger carapace conducts heat the research of function


River of Wang Anjun tall Lei altogethers

(Liaoning is petro-chemical university, liaoning n 113001)

Summary: Basically be opposite L8. , 25. , 30. The helix of helix angle is folded stream board diathermancy of Cheng of heat exchanger carapace can undertake determining with research, undertook L8 again at the same time. , 25. , 30. The helix of helix angle is folded stream board heat exchanger and traditional segment of a circle are folded stream board Cheng of heat exchanger carapace conducts heat of function quite. Reached from inside the experiment helix angle is namely 30. helix is folded stream board of heat exchanger pass thermal efficiency highest, reach again 18. , 25. , 30. The helix of different helix angle is folded stream board the segment of a circle that the housing Cheng of heat exchanger passes thermal efficiency to compare a tradition is folded stream board Cheng of heat exchanger carapace passes thermal efficiency tall.

Keyword: Helix is folded stream board; Segment of a circle is folded stream board; Helix angle; Pass thermal efficiency

The graph classifies date in: TQ051. 5 document label piles up: A article number: 1001, 4837(2007)09, 0001, 03

1 overview


Cold changing equipment is the main facility in the trade technological process such as oil refining, chemical industry, electric power, according to statistic, in refinery cold the 40 ％ that change equipment to take entire facility about. The main facility in its since technological process, it is the enterprise reduces the specific power consumption, main measure that reduces cost, because this is cold,trading equipment technology level is refinery one of main marks of advanced degree. Our country is most now cold change equipment, the bend that the flow of medium of its carapace Cheng still is a tradition almost fold stream board means of Z word flow, make cold change equipment to always conduct heat coefficient K is worth all the time backwater is in inferior status, and arrived 2O century at the beginning of 90 time, a kind new-style cold change equipment -- helix is folded stream board heat exchanger begins to apply at industrial domain, the flow of medium of its carapace Cheng is shown " corkscrewed yarn " model means of going from place to place, bring about fold stream board appearance produced very big change, fold stream board the form that it is an umbrella, every are folded stream board show certain included angle with housing axes, of photograph adjacent fold stream board in periphery " from beginning to end " conterminous, every 4 circumferential and successive corkscrewed yarn outside forming, the sluggish that reduced housing Cheng side sheds area and dead band, because this reduces bilge deposit, the flow condition that changed housing Cheng fluid thereby and enlarged heating surface area, achieve increase the intent that expresses thermal efficiency. Plant as a result of this again the means of going from place to place of medium of distinctive carapace layer, make housing Cheng pressure falls to be reduced apparently, make heat exchanger is had fight goodly brace up quality, reduced the loss that check produces as a result of vibration, improve the service life of heat exchanger. If particular structure pursues 1, 2 are shown.
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