Abstract
Experimental study of the condensation of pure and mixed refrigerants of R22 and R114 inside a spirally grooved horizontal tube is carried out for a tube-in-tube counter flow type condenser in the ranges of 3~21 bar of pressure and 26~70 kg/h of mass flow rate. Axial distributions of refrigerant, tube wall and cooling water temperatures, wall heat flux and vapour quality are graphically shown and circumferential distribution of tube wall temperature is also shown. The characteristic of the local Nusselt number depends on the molar fraction, while the average Nusselt number can be correlated well by an equation, which is modified from a previously established equation for pure refrigerants inside a smooth tube.
| Original language | English |
|---|---|
| Pages (from-to) | 1447-1452 |
| Number of pages | 6 |
| Journal | Transactions of the Japan Society of Mechanical Engineers Series B |
| Volume | 54 |
| Issue number | 502 |
| DOIs | |
| Publication status | Published - Jan 1 1988 |
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All Science Journal Classification (ASJC) codes
- Condensed Matter Physics
- Mechanical Engineering
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Condensation of Refrigerant Mixtures R22+R114 Inside a Horizontal Tube. / Koyama, Shigeru; Mlyara, Akio; Fujii, Tetsu; Takamatsu, Hiroshi; Yonemoto, Kazuo.
In: Transactions of the Japan Society of Mechanical Engineers Series B, Vol. 54, No. 502, 01.01.1988, p. 1447-1452.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Condensation of Refrigerant Mixtures R22+R114 Inside a Horizontal Tube
AU - Koyama, Shigeru
AU - Mlyara, Akio
AU - Fujii, Tetsu
AU - Takamatsu, Hiroshi
AU - Yonemoto, Kazuo
PY - 1988/1/1
Y1 - 1988/1/1
N2 - Experimental study of the condensation of pure and mixed refrigerants of R22 and R114 inside a spirally grooved horizontal tube is carried out for a tube-in-tube counter flow type condenser in the ranges of 3~21 bar of pressure and 26~70 kg/h of mass flow rate. Axial distributions of refrigerant, tube wall and cooling water temperatures, wall heat flux and vapour quality are graphically shown and circumferential distribution of tube wall temperature is also shown. The characteristic of the local Nusselt number depends on the molar fraction, while the average Nusselt number can be correlated well by an equation, which is modified from a previously established equation for pure refrigerants inside a smooth tube.
AB - Experimental study of the condensation of pure and mixed refrigerants of R22 and R114 inside a spirally grooved horizontal tube is carried out for a tube-in-tube counter flow type condenser in the ranges of 3~21 bar of pressure and 26~70 kg/h of mass flow rate. Axial distributions of refrigerant, tube wall and cooling water temperatures, wall heat flux and vapour quality are graphically shown and circumferential distribution of tube wall temperature is also shown. The characteristic of the local Nusselt number depends on the molar fraction, while the average Nusselt number can be correlated well by an equation, which is modified from a previously established equation for pure refrigerants inside a smooth tube.
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UR - http://www.scopus.com/inward/citedby.url?scp=0024029242&partnerID=8YFLogxK
U2 - 10.1299/kikaib.54.1447
DO - 10.1299/kikaib.54.1447
M3 - Article
AN - SCOPUS:0024029242
VL - 54
SP - 1447
EP - 1452
JO - Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
JF - Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
SN - 0387-5016
IS - 502
ER -