Coefficients of performance and local heat transfer coefficients for flow boiling inside horizontal tubes with non azeotropic refrigerant mixtures in a small exhaust air heat pump.

Summary

One near azeotropic mixture of R22-R124-R152a and two binary mixtures of R22-R142b with different compositions are compared with R12. The model is designed to simulate the working conditions in a commercial exhaust air heat pump, heating tap water in single-family houses. The experiments show that non azeotropic refrigerant mixtures can increase both heating capacity and COP.

Details

Original title: Coefficients of performance and local heat transfer coefficients for flow boiling inside horizontal tubes with non azeotropic refrigerant mixtures in a small exhaust air heat pump.
Record ID : 1993-0458
Languages: English
Publication date: 1992/07/14
Source: Source: Proc. 1992 int. Refrig. Conf., Energy Effic. New Refrig., Purdue Univ.
vol. 1; 157-166; 8 fig.; 1 tabl.; 10 ref.
Document available for consultation in the library of the IIR headquarters only.

Indexing

Themes: CFCs;
Heat pumps techniques;
HCFCs;
Residential heat-pumps;
HFCs;
Blends
Keywords: Heat transfer coefficient; Exhaust air; Single-family house; Air-water; R22; R152a; R142b; R124; R12; R11; Heat pump; Zeotropic mixture; COP