ShareCapacity comparisons and operating experience of reciprocating chillers with R407C and R22.
[In German. / En allemand.]
Author(s) : HARTMANN K.
Type of article: Article
Summary
Although the zeotrope refrigerant R407C has characteristics similar to R22, it cannot be considered as a full drop-in for R22. Regarding trouble-free compressor performance, especially the different solubility of refrigerant into synthetic oil, has to be noted; at start up the oil pump must handle increased demand. Exact measurements also show differences in heat transfer, where plate heat exchangers perform better than plate fin coils and shell-and-tube exchanger, respectively. With several heat exchanger configurations and numerous laboratory tests it is shown that general numbers in percentage of capacity changes are not worthwhile and that only a change of refrigerant in R22 systems will result in lower COP in any case.
Details
- Original title: [In German. / En allemand.]
- Record ID : 1997-3203
- Languages: German
- Source: KI Luft Kältetech. - n. 11
- Publication date: 1996/11
- Document available for consultation in the library of the IIR headquarters only.
Links
See other articles in this issue (8)
See the source
Indexing
-
Themes:
HCFCs;
Blends - Keywords: R407C; Comparison; R22; Substitute; Oil; Retrofitting; Refrigerant; Heat exchanger; Compressor
-
Consideraciones acerca de la recuperación del a...
- Author(s) : SCHWIEGEL M., MEURER C.
- Date : 2001/10
- Languages : Spanish
- Source: Téc. Frio - vol. 50 - n. 541
View record
-
Comparison of R407C and R410A with R22 in a 10....
- Author(s) : MURPHY F. T., LOW R. E., GILBERT B. E., LINTON J. W., SNELSON W. K., HEARTY P. F.
- Date : 1995/10/23
- Languages : English
- Source: Stratospheric Ozone Protection for the 90's. 1995 International CFC and Halon Alternatives Conference & Exhibition. Conference proceedings.
View record
-
Experiments about R22 substitution.
- Author(s) : APREA C., DE ROSSI F., GRECO A.
- Date : 1996/09/10
- Languages : English
- Source: Research, design and construction of refrigeration and air conditioning equipments in Eastern European countries.
- Formats : PDF
View record
-
Comparison of R407C and R410A with R22 in a 10....
- Author(s) : LINTON J. W., SNELSON W. K., HEARTY P. F., TRIEBE A. R., MURPHY F. T., LOW R. E., GILBERT B. E.
- Date : 1996/07/23
- Languages : English
- Source: Proceedings of the 1996 Purdue International Refrigeration Conference.
View record
-
Refrigeranti alternativi ad R22 nelle applicazi...
- Author(s) : CAMPAGNA E., CHIESA L.
- Date : 1997/06/27
- Languages : Italian
- Source: Le ultime tecnologie del freddo e del condizionamento./ Latest technologies in refrigeration and air conditioning.
View record