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EnglishA comparison is made between an ice-slurry solution with different inlet ice mass fractions and an R404a refrigerant utilised in an evaporator with constant heat power and fixed geometry. The comparison is obtained using a parameter that represents the ratio between the total real entropy variation and the exchanged heat. This parameter, introduced by Grazzini and Ferraro (2000), shows that an ice-slurry solution is better than an R404a as refrigerant fluid, when considering a particular heat exchanger. The heat exchanger used is of a finned tube type with an in-line tube bank. Results show that with the same heat power ice-slurry entropy variation is lower than that given by R404a.
| Titolo: | HOW TO CHOOSE COOLING FLUID IN FINNED TUBE HEAT EXCHANGERS |
| Autori di Ateneo: | |
| Autori: | A. GAGLIARDI; GRAZZINI, GIUSEPPE |
| Anno di registrazione: | 2002 |
| Titolo del libro: | Fifth IIR Workshop on Ice Slurries |
| Titolo del congresso: | Fifth IIR WORKSHOP ON ICE SLURRIES, |
| Luogo del congresso: | STOCKHOLM |
| Data del congresso: | 30-31 may |
| Abstract: | A comparison is made between an ice-slurry solution with different inlet ice mass fractions and an R404a refrigerant utilised in an evaporator with constant heat power and fixed geometry. The comparison is obtained using a parameter that represents the ratio between the total real entropy variation and the exchanged heat. This parameter, introduced by Grazzini and Ferraro (2000), shows that an ice-slurry solution is better than an R404a as refrigerant fluid, when considering a particular heat exchanger. The heat exchanger used is of a finned tube type with an in-line tube bank. Results show that with the same heat power ice-slurry entropy variation is lower than that given by R404a. |
| Handle: | http://hdl.handle.net/2158/9839 |
| Appare nelle tipologie: | 4a - Articolo in atti di congresso |
File in questo prodotto:
| File | Descrizione | Tipologia | Licenza | |
|---|---|---|---|---|
| GrazziniGagliardiF.pdf | Articolo principale | PDF editoriale | DRM non definito | Accesso pubblicoVisualizza/Apri |
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