Search: id:"swepub:oai:research.chalmers.se:1e836853-e406-4b42-8f78-5312b5e5f9fd" >
Changes in optimal ...
-
Gabrielii, Cecilia,1969Chalmers tekniska högskola,Chalmers University of Technology
(author)
Changes in optimal design of a dry-expansion evaporation when replacing r22 with r407c
- Article/chapterEnglish1998
Publisher, publication year, extent ...
Numbers
-
LIBRIS-ID:oai:research.chalmers.se:1e836853-e406-4b42-8f78-5312b5e5f9fd
-
https://doi.org/10.1016/S0140-7007(98)00032-2DOI
-
https://research.chalmers.se/publication/44353URI
Supplementary language notes
-
Language:English
-
Summary in:English
Part of subdatabase
Classification
-
Subject category:art swepub-publicationtype
-
Subject category:ref swepub-contenttype
Notes
-
An investigation was made on whether the optimal distribution of heat exchanger area between the evaporator and the suction gas heat exchanger, at a given cost, will change when R22 is replaced with the non-azeotropic mixture R407C. A comprehensive computer program was used to simulate a refrigeration plant, originally designed for R22, where the tube-and-shell evaporator is of dry-expansion type. The simulations show that for R22, the area distribution in the original design is optimal for every set of conditions simulated. For R407C it is, in most of the cases simulated, favourable to move some heat exchanger area from the evaporator to the suction gas heat exchanger. The improvement in COP can be up to 3.4%. Further, it was observed that the optimal area distribution for R407C corresponds to the maximum use of the glide in the evaporator, and for R22 to the minimum pressure drop in the evaporator. The superheat at the evaporator exit is an important parameter, especially for the non-azeotropic mixture.
Subject headings and genre
Added entries (persons, corporate bodies, meetings, titles ...)
-
Vamling, Lennart,1954Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)lennartv
(author)
-
Chalmers tekniska högskola
(creator_code:org_t)
Related titles
-
In:International journal of Refrigeration21:7, s. 518-5341103-2952
Internet link
Find in a library
To the university's database