Skip to main content

Advertisement

SpringerLink
Log in

Theoretical and experimental research on using quasi saturation isentropic compression discharge temperature to control refrigerant mass flow rate

  • Original
  • Published:
Heat and Mass Transfer Aims and scope Submit manuscript

Abstract

It is common to control refrigerant mass flow rate by suction superheat in a vapor compression system. This paper puts forward a method which is called Quasi Saturation Isentropic Compression Discharge Temperature (QSICDT) Control. First, this control method is used to theoretically analyze the system performance for R22, R134a, R32 and R410A refrigerants under the condition of air conditioning (AC) and refrigeration applications, and it means that the method is applicable to R22 and R32 refrigeration system through experimental study. When optimizing the discharge state, it is found that the COP has a maximum value. Second, from the experimental results, it can be known that the cooling capacity and COP could reach the maximum value, when the suction vapor quality for the R32 refrigeration system is about 0.99. The experimental results also show that using QSICDT can control the suction refrigerant with a little liquid. QSICDT Control is favorable for R32 system, which need to decrease the discharge temperature and improve the system performance. The capacity and COP all have a little increase when the wet compression is applied in R22 and R32 system. Compared to ARI superheat control, R32 COP for QSI Compression can improve 3 and 5% for AC and refrigeration application, respectively. As a result, it is possible to control refrigerant mass flow rate according to operating conditions. And it can promote and apply refrigerant R32 to the air conditioning system with low environmental burden, high energy-efficiency and relatively low cost.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6
Fig. 7
Fig. 8
Fig. 9
Fig. 10

Similar content being viewed by others

Abbreviations

M :

non-dimensional mass flow rate

h :

enthalpy, kJ·kg−1

m :

refrigerant mass flow rate, kg·s−1

P :

pressure, kPa

Q :

cooling capacity, kW

w :

compressor power, kW

χ:

vapor quality

s :

entropy, kJ·kg−1·K−1

T :

temperature, K

η :

compression efficiency

η’:

the actual measured compression efficiency

Φ:

compressor shell heat loss rate, kW

ρ:

refrigerant density at the inlet of the compressor, kg·m−3

Vs :

the volume flowrate at the inlet of the compressor, m3·s−1

F Φ :

compressor shell heat loss factor ∆T - superheat, K

s :

compressor suction

is :

isentropic process

d :

compressor discharge

sc :

condenser sub-cooling

QSICDT :

Quasi saturation isentropic compression discharge temperature

AC:

Air conditioning

COP:

Coefficient of performance

QSI :

Quasi saturation isentropic

ARI:

Air Conditioning and Refrigeration Institute

CHLI :

Compressor heat loss index

PLC:

Programmable logic controller

PID:

Proportion integration differentiation

References

  1. Huelle ZH (1972) The MSS line-a new approach to the hunting problem. ASHRAE J 10:43–46

    Google Scholar 

  2. Mithraratne P, Wijeysundera NE (2001) An experimental and numerical study of the dynamic behaviour of a counter-flow evaporator. Int J Refrig 24:554–565

    Article  Google Scholar 

  3. Chen W, Zhijiu C, Ruiqi Z, Yezheng W (2002) Experimental investigation of a minimum stable superheat control system of an evaporator. Int J Refrig 25:1137–1142

    Article  Google Scholar 

  4. Elliott MS, Rasmussen BP (2010) On reducing evaporator superheat nonlinearity with control architecture. Int J Refrig 33:607–614

    Article  Google Scholar 

  5. Hua L, Jeong S-K, You S-S (2009) Feedforward control of capacity and superheat for a variable speed refrigeration system. Appl Therm Eng 29:1067–1074

    Article  Google Scholar 

  6. Fallahsohi H, Changenet C, Place S, Ligeret C, Lin-Shi X (2010) Predictive functional control of an expansion valve for minimizing the superheat of an evaporator. Int J Refrig 33:409–418

    Article  Google Scholar 

  7. Vinther K, Rasmussen H, Izadi-Zamanabadi R, Stoustrup J (2013) Single temperature sensor superheat control using a novel maximum slope-seeking method. Int J Refrig 36:1118–1129

    Article  Google Scholar 

  8. Dutta AK, Yanagisawa T, Fukuta M (2001) An investigation of the performance of a scroll compressor under liquid refrigerant injection. Int J Refrig 24:577–587

    Article  Google Scholar 

  9. Infante Ferreira CA, Zaytsev D, Zamfirescu C (2006) Wet compression of pure refrigerants, International Compressor Engineering Conference, paper 1778

  10. Wang X, Hwang Y, Radermacher R (2008) Investigation of potential benefits of compressor cooling. Appl Therm Eng 28:1791–1797

    Article  Google Scholar 

  11. Yajima R, Yoshimi A, Piao C-c (2011) Measures to reduce the discharge temperature of R32 compressor. Refrigeration and Air-conditioning 11:60–64

    Google Scholar 

  12. Kusatsu ST, Kusatsu JT, Kusatsu KS Refrigerating device, United States Patent US006581397B1 (2003-6-24)

  13. Lumpkin DR, Bahman AM, Groll EA (2018) Two-phase injected and vapor-injected compression: experimental results and mapping correlation for a R-407C scroll compressor. Int J Refrig 86:449–462

    Article  Google Scholar 

  14. Air Conditioning and Refrigeration Institute (ARI) (1999) ANSI/ARI Standard 540, Positive displacement refrigerant compressors and compressor units

  15. Li W (2013) Simplified steady-state modeling for variable speed compressor. Appl Therm Eng 50:318–326

    Article  Google Scholar 

  16. Gensei taro (1982) The principle and performance of refrigeration device chapter 6.1. Agriculture press

  17. Itard LCM (1995) Wet compression versus dry compression in heat pumps working with pure refrigerants or non-azeotropic mixtures. Int J Refrig 18:495–504

    Article  Google Scholar 

  18. Vorster PPJ, Meyer JP (2000) Wet compression versus dry compression in heat pumps working with pure refrigerants or non-azeotropic binary mixtures for different heating applications. Int J Refrig 23:292–311

    Article  Google Scholar 

  19. Lemmon EW, McLinden MO, Huber ML (2002) REFPROP reference fluid thermodynamic and transport properties, NIST Standard Reference Database 23, Version 7.0

  20. Kline SJ, McClintock FA (1953) Describing uncertainties in single-sample experiments. Mech Eng 75(1):3–8

    Google Scholar 

Download references

Fund projects

Shanghai key laboratory of multiphase flow and heat transfer of power engineering (13DZ2260900), Shanghai Education Committee Project (10-17-301-803), and PhD Start-up Fund(1D-16-301-007).

Author information

Authors and Affiliations

  1. Institute of Refrigeration and Cryogenics, University of Shanghai for Science and Technology, Shanghai, 200093, China

    Lihao Huang, Leren Tao, Chao Wang & Lihui Yang

Authors
  1. Lihao Huang
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Leren Tao
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. Chao Wang
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. Lihui Yang
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to Lihao Huang.

Additional information

Publisher’s Note

Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Huang, L., Tao, L., Wang, C. et al. Theoretical and experimental research on using quasi saturation isentropic compression discharge temperature to control refrigerant mass flow rate. Heat Mass Transfer 55, 489–500 (2019). https://doi.org/10.1007/s00231-018-2437-9

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s00231-018-2437-9

Search

Navigation