(A) study on the thermal characteristics of a double-spiral heat exchanger using a thermo-electric cooler : analysis and experimentation = 열전소자를 이용한 이중 나선형 열교환기의 열적 특성에 관한 수치 및 실험적 연구 analysis and experimentation

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A double spiral heat exchanger used as a novel dehumidifier is proposed and constructed, by merging the merits of the double spiral configuration and the advantages of thermo-electric coolers (TECs). Numerical work to verify previous reports is initially conducted, along with other preliminary experiments related with the heat removal capacity of the TEC. Following the integration of various sub parts into an operating dehumidifying system, further experimentation is conducted to obtain temperature profiles in the dehumidifier for various inlet air temperature and humidity conditions. The formed condensate is removed from the dehumidifier through condensate wicks attached to the bottom plate of the dehumidifier. The amount of condensate is measured using a precision scale. The temperature profiles obtained for dry and moist air inlet conditions show that the heat removed consists of only sensible heat in the case of dry air and both sensible and latent heat for moist air. The sensible heat is calculated using the well-known LMTD heat exchanger analysis. The latent heat is accounted for using the psychrometric chart. The sum of the sensible heat transfer and the latent heat transfer in the double spiral heat exchanger adds up to approximately equal the heat removed through the TEC. The operating dehumidifier yields daily condensate amounts in between 160g and 200g over a 24 hour period for the given inlet moist air conditions.
Advisors
Song, Tae-Horesearcher송태호researcher
Description
한국과학기술원 : 기계공학전공,
Publisher
한국과학기술원
Issue Date
2002
Identifier
177036/325007 / 020003804
Language
eng
Description

학위논문(석사) - 한국과학기술원 : 기계공학전공, 2002.8, [ x, 64 p. ]

Keywords

Thermo-electric cooler; Double spiral heat exchanger; Dehumidifier; 제습기; 열전소자; 이중 나선형 열교환기

URI
http://hdl.handle.net/10203/45362
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=177036&flag=dissertation
Appears in Collection
ME-Theses_Master(석사논문)
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