Pregled bibliografske jedinice broj: 102334
A THEORETICAL APPROACH TO THE EVALUATION OF VISCOUS AND TURBULENT FLOW HEAT TRANSFER AND PRESSURE DROP IN A CHEVRON PLATE HEAT EXCHANGER CHANNEL
A THEORETICAL APPROACH TO THE EVALUATION OF VISCOUS AND TURBULENT FLOW HEAT TRANSFER AND PRESSURE DROP IN A CHEVRON PLATE HEAT EXCHANGER CHANNEL // ZERO LEKAGE-MINIMUM CHARGE, PREPRINT / W. Pridasawas, B. Palm (ur.).
Stockholm: Kungliga Tekniska Hogskolan, 2002. str. 401-412 (predavanje, međunarodna recenzija, cjeloviti rad (in extenso), znanstveni)
CROSBI ID: 102334 Za ispravke kontaktirajte CROSBI podršku putem web obrasca
Naslov
A THEORETICAL APPROACH TO THE EVALUATION OF VISCOUS AND TURBULENT FLOW HEAT TRANSFER AND PRESSURE DROP IN A CHEVRON PLATE HEAT EXCHANGER CHANNEL
Autori
Dović, Damir ; Palm, Bjorn ; Švaić, Srećko
Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni
Izvornik
ZERO LEKAGE-MINIMUM CHARGE, PREPRINT
/ W. Pridasawas, B. Palm - Stockholm : Kungliga Tekniska Hogskolan, 2002, 401-412
Skup
Joint meeting of the International Institute of Refigeration, Sections 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; thermal and hydraulic measurements; semi-empirical correlation
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
