Potential benefits of saturation cycle with two-phase refrigerant injection

Hoseong Lee, Yunho Hwang, Reinhard Radermacher, Ho Hwan Chun

Research output: Contribution to journalArticle

32 Citations (Scopus)

Abstract

In this paper, a saturation cycle is proposed to enhance a vapor compression cycle performance by reducing thermodynamic losses associated with single phase gas compression and isenthalpic expansion. In order to approach the saturation cycle, a two-phase refrigerant injection technique is applied to the multi-stage cycle. This multi-stage cycle with different options is modeled, and its performance is evaluated under ASHRAE standard operating conditions for air conditioning systems. Moreover, the two-phase refrigerant injection cycle is compared with the typical vapor injection cycle which is utilizing the internal heat exchanger or the flash tank. Low GWP refrigerants are applied to this two-phase refrigerant injection cycle. In terms of the COP and its improvement, R123 has a higher potential than any other refrigerants in the multi-stage cycle. Lastly, practical ideas realizing the saturation cycle are discussed such as multi-stage phase separator, phase separator with helical structure inside, and injection location of the compressor.

Original languageEnglish
Pages (from-to)27-37
Number of pages11
JournalApplied Thermal Engineering
Volume56
Issue number1-2
DOIs
Publication statusPublished - 2013 Apr 17
Externally publishedYes

Fingerprint

Refrigerants
Separators
Vapors
Air conditioning
Heat exchangers
Compressors
Compaction
Thermodynamics
Gases

Keywords

  • Multi-stage cycle
  • Saturation cycle
  • Two-phase injection cycle

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Industrial and Manufacturing Engineering

Cite this

Potential benefits of saturation cycle with two-phase refrigerant injection. / Lee, Hoseong; Hwang, Yunho; Radermacher, Reinhard; Chun, Ho Hwan.

In: Applied Thermal Engineering, Vol. 56, No. 1-2, 17.04.2013, p. 27-37.

Research output: Contribution to journalArticle

Lee, Hoseong ; Hwang, Yunho ; Radermacher, Reinhard ; Chun, Ho Hwan. / Potential benefits of saturation cycle with two-phase refrigerant injection. In: Applied Thermal Engineering. 2013 ; Vol. 56, No. 1-2. pp. 27-37.
@article{dd7f4fe93576465e8a9eb1dd5ce37aa6,
title = "Potential benefits of saturation cycle with two-phase refrigerant injection",
abstract = "In this paper, a saturation cycle is proposed to enhance a vapor compression cycle performance by reducing thermodynamic losses associated with single phase gas compression and isenthalpic expansion. In order to approach the saturation cycle, a two-phase refrigerant injection technique is applied to the multi-stage cycle. This multi-stage cycle with different options is modeled, and its performance is evaluated under ASHRAE standard operating conditions for air conditioning systems. Moreover, the two-phase refrigerant injection cycle is compared with the typical vapor injection cycle which is utilizing the internal heat exchanger or the flash tank. Low GWP refrigerants are applied to this two-phase refrigerant injection cycle. In terms of the COP and its improvement, R123 has a higher potential than any other refrigerants in the multi-stage cycle. Lastly, practical ideas realizing the saturation cycle are discussed such as multi-stage phase separator, phase separator with helical structure inside, and injection location of the compressor.",
keywords = "Multi-stage cycle, Saturation cycle, Two-phase injection cycle",
author = "Hoseong Lee and Yunho Hwang and Reinhard Radermacher and Chun, {Ho Hwan}",
year = "2013",
month = "4",
day = "17",
doi = "10.1016/j.applthermaleng.2013.03.030",
language = "English",
volume = "56",
pages = "27--37",
journal = "Applied Thermal Engineering",
issn = "1359-4311",
publisher = "Elsevier Limited",
number = "1-2",

}

TY - JOUR

T1 - Potential benefits of saturation cycle with two-phase refrigerant injection

AU - Lee, Hoseong

AU - Hwang, Yunho

AU - Radermacher, Reinhard

AU - Chun, Ho Hwan

PY - 2013/4/17

Y1 - 2013/4/17

N2 - In this paper, a saturation cycle is proposed to enhance a vapor compression cycle performance by reducing thermodynamic losses associated with single phase gas compression and isenthalpic expansion. In order to approach the saturation cycle, a two-phase refrigerant injection technique is applied to the multi-stage cycle. This multi-stage cycle with different options is modeled, and its performance is evaluated under ASHRAE standard operating conditions for air conditioning systems. Moreover, the two-phase refrigerant injection cycle is compared with the typical vapor injection cycle which is utilizing the internal heat exchanger or the flash tank. Low GWP refrigerants are applied to this two-phase refrigerant injection cycle. In terms of the COP and its improvement, R123 has a higher potential than any other refrigerants in the multi-stage cycle. Lastly, practical ideas realizing the saturation cycle are discussed such as multi-stage phase separator, phase separator with helical structure inside, and injection location of the compressor.

AB - In this paper, a saturation cycle is proposed to enhance a vapor compression cycle performance by reducing thermodynamic losses associated with single phase gas compression and isenthalpic expansion. In order to approach the saturation cycle, a two-phase refrigerant injection technique is applied to the multi-stage cycle. This multi-stage cycle with different options is modeled, and its performance is evaluated under ASHRAE standard operating conditions for air conditioning systems. Moreover, the two-phase refrigerant injection cycle is compared with the typical vapor injection cycle which is utilizing the internal heat exchanger or the flash tank. Low GWP refrigerants are applied to this two-phase refrigerant injection cycle. In terms of the COP and its improvement, R123 has a higher potential than any other refrigerants in the multi-stage cycle. Lastly, practical ideas realizing the saturation cycle are discussed such as multi-stage phase separator, phase separator with helical structure inside, and injection location of the compressor.

KW - Multi-stage cycle

KW - Saturation cycle

KW - Two-phase injection cycle

UR - http://www.scopus.com/inward/record.url?scp=84876143556&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84876143556&partnerID=8YFLogxK

U2 - 10.1016/j.applthermaleng.2013.03.030

DO - 10.1016/j.applthermaleng.2013.03.030

M3 - Article

AN - SCOPUS:84876143556

VL - 56

SP - 27

EP - 37

JO - Applied Thermal Engineering

JF - Applied Thermal Engineering

SN - 1359-4311

IS - 1-2

ER -