R134A Suction Line Heat Exchanger in Different Configurations of Automotive Air-Conditioning Systems

Preissner, Marcus; Radermacher, Reinhard; Zhang, Chao; Dickson, Tim

doi:10.4271/2001-01-1694

Cited by 15 publications

(9 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Preissner et al [31] analysed the IHX effects on an R134a automotive air conditioning system, the COP and the capacity resulting with IHX (60% effectiveness) was increased between 5 and 10%. In the same way, Desai [32] used a system test bench calorimeter and noticed that IHX can improve the efficiency of an R134a cycle noticeably (11% with Copper IHX and 7.18% with Aluminum IHX).…”

Section: Introductionmentioning

confidence: 98%

Drop-in analysis of an internal heat exchanger in a vapour compression system using R1234ze(E) and R450A as alternatives for R134a

Mota-Babiloni

Navarro-Esbrí

Barragán-Cervera

et al. 2015

Energy

View full text Add to dashboard Cite

Keywords:Internal heat exchanger R1234ze(E) R134a R450A Energy efficiency Refrigeration a b s t r a c tThe IHX (internal heat exchanger) is introduced in some refrigeration systems in order to achieve higher energy performances. Results obtained vary greatly depending on the refrigerant used and working conditions. This paper describes a drop-in analysis of IHX effects on the performance of a vapour compression system using R1234ze(E) and R450A (R134a/R1234ze(E) commercial mixture) as R134a low-GWP replacements. The tests were carried out in a completely monitored vapour compression system varying the condensing and evaporating temperature, with and without a counter-current flow tube-in-tube IHX. Because the cooling capacity rises and the power consumption remains similar, the conclusion is that the IHX has a positive influence on the energy efficiency for all refrigerants tested. The COP (coefficient of performance) gain using R1234ze(E) is the highest observed (overcomes the R134a COP for the same conditions). The R1234ze(E) and R450A discharge temperature increments are lower than those of R134a so does not reach dangerous values and the IHX pressure drops are also below than that of R134a.

show abstract

Section: Introductionmentioning

confidence: 98%

Drop-in analysis of an internal heat exchanger in a vapour compression system using R1234ze(E) and R450A as alternatives for R134a

Mota-Babiloni

Navarro-Esbrí

Barragán-Cervera

et al. 2015

Energy

View full text Add to dashboard Cite

show abstract

“…Pomme [26] designed three kinds of expansion valve positions and analyzed MAC system performance. Meanwhile, Preissner et al [27] added an internal heat exchanger (IHX) to compressor suction lines. The experimental data showed that the system COP and system cooling capacity can be increased by 5%-7% and 8%-10%, respectively, with an IHX efficiency of 60%-80%.…”

Section: New Technologies To Improve System Performance and Reduce Inmentioning

confidence: 99%

New developments in mobile air conditioning systems in China

Chen

Zhao

2011

Front. Energy

View full text Add to dashboard Cite

show abstract

“…The results showed the use of both the condensing subcooling and the SLHX simultaneously yielded more efficient performance improvement, especially for R-1234yf. Preissner et al (2000) tested the performance of an R134a automotive prototype air-conditioning system with the SLHX. Tube-in-tube type heat exchanger was applied and the effectiveness of the SLHX was between 55 to 65%.…”

Section: Suction Line Heat Exchangermentioning

confidence: 99%