Pregled bibliografske jedinice broj: 102315
BASIC SINGLE-PHASE FLOW PHENOMENA IN CHEVRON-TYPE PLATE HEAT EXCHANGERS
BASIC SINGLE-PHASE FLOW PHENOMENA IN CHEVRON-TYPE PLATE HEAT EXCHANGERS // ZEROLEAKAGE-MINIMUM CHARGE, PREPRINT / W. Pridasawas, B. Palm (ur.).
Stockholm: Kungliga Tekniska Hogskolan, 2002. str. 221-231 (predavanje, međunarodna recenzija, cjeloviti rad (in extenso), znanstveni)
CROSBI ID: 102315 Za ispravke kontaktirajte CROSBI podršku putem web obrasca
Naslov
BASIC SINGLE-PHASE FLOW PHENOMENA IN CHEVRON-TYPE PLATE HEAT EXCHANGERS
Autori
Dović, Damir ; Palm, Bjorn ; Švaić, Srećko
Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni
Izvornik
ZEROLEAKAGE-MINIMUM CHARGE, PREPRINT
/ W. Pridasawas, B. Palm - Stockholm : Kungliga Tekniska Hogskolan, 2002, 221-231
Skup
Joint meeting of the International Institute of Refrigeration, Sctions B and E
Mjesto i datum
Švedska, 26.08.2002. - 28.08.2002
Vrsta sudjelovanja
Predavanje
Vrsta recenzije
Međunarodna recenzija
Ključne riječi
plate heat exchangers; flow mechanism; heat transfer and pressure drop
Sažetak
The paper presents the results of research concerning flow in corrugated chevron channels of plate heat exchangers. The basic flow mechanism is investigated through a number of dye based visualization tests performed on two channels with the chevron angles &#61538 ; ; =28o and &#61538 ; ; =65o under flow conditions corresponding to Re=(0.5÷300). A presence of basically two flow components has been observed whose influence on the heat transfer is dependent mainly upon the angle &#61538 ; ; but also upon the Re-number and aspect ratio b/l. Plate designs with higher values of &#61538 ; ; and b/l will yield better thermal performances and larger pressure drop. From data in the open literature it is concluded that at lower angles, &#61538 ; ; <45o, a variation of b/l does not significantly affect the thermal-hydraulic performances of the exchanger. Also, in the flow regimes at very low Re-numbers (Re<10) an increase of the angle &#61538 ; ; is of minor significance for enhancement of the heat transfer. The conclusions deduced are supported by experimental heat transfer and pressure drop data reported in the open literature. An assessment of thermal-hydraulic performances in terms of the area goodness factor indicates that care must be exercised when optimizing surfaces at a design stage since in certain flow regimes some aspect ratios at fixed angle yield too high pressure drop penalties relative to the gain in heat transfer.
Izvorni jezik
Engleski
Znanstvena područja
Strojarstvo
