Skip to main content

Advertisement

SpringerLink
Log in

Potential electricity savings by variable speed control of compressor for air conditioning systems

  • Original Paper
  • Published:
Clean Technologies and Environmental Policy Aims and scope Submit manuscript

Abstract

The potential of a variable-speed compressor running on a controller to provide enhanced load-matching capability, energy saving and thermal comfort for application in air-conditioning system is demonstrated. An air-conditioning system, originally operated on a constant speed mode, is retrofitted with an inverter and a PID controller. The system was installed to a thermal environmental room together with a data acquisition system to monitor energy consumption and temperature of the room. Measurements were taken 2 h daily at a time interval of 5 min for an on/off and an inverter variable-speed conditions. The results indicate that thermal comfort of the room together with energy saving can be obtained through a proper selection of K for the controller. At a temperature setting of 22°C, the energy saving for the system is estimated to reach 25.3% for PID controllers.

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
Fig. 11
Fig. 12
Fig. 13
Fig. 14

Similar content being viewed by others

Abbreviations

D :

derivative

e :

control error

I :

integral

i :

index of operating point

K p :

proportional gain

K d :

derivative gain

K i :

integral gain

n :

index of current operating point

P:

proportional

ts :

time sampling

u :

control variable

TemReff:

temperature reference

References

  • Ho WF (1993) Development and evaluation of a software package for self-tuning of three-term DDC controller. ASHRAE Trans 99(1):529–534

    Google Scholar 

  • Koury RNN, Machado L, Ismail KAR (2001) Numerical simulation of a variable speed refrigeration system. Int J Refrig 24:192–200

    Article  Google Scholar 

  • Krakow KI, Sui L, Zhao SZ (1995) Temperature and humidity control during cooling and dehumidifying by compressor and evaporator fan speed variation. ASHRAE Trans 101(1):292–304

    Google Scholar 

  • Lloyd JD (1982) Variable speed compressor motors operated on inverters. ASHRAE Trans 88(1):633–642

    Google Scholar 

  • Nasution H (2005) Control tuning and performance, Progress Report, Universiti Teknologi Malaysia

  • Nesler CG, Stoecker WF (1984) Selecting the proportional and integral constants in the direct digital control of discharge air temperature. ASHRAE Trans 90(2B):834–844

    Google Scholar 

  • Perdikaris GA (1991) Computer controlled systems: theory and application. Kluwer, Netherlands

    Google Scholar 

  • Riegger OK (1988) Variable speed compressor performance. ASHRAE Trans 94(1):1215–1228

    Google Scholar 

Download references

Acknowledgements

The author acknowledges support provided by Bung Hatta University and Universiti Teknologi Malaysia for this research. We thank the Fluid and Thermal Laboratory Faculty of Mechanical Engineering and Mr. M. Oktaviandri to support my software.

Author information

Authors and Affiliations

  1. Department of Mechanical Engineering, Faculty of Industrial Engineering, Bung Hatta University, 25143, Padang, West Sumatera, Indonesia

    Henry Nasution

  2. Faculty of Mechanical Engineering, Universiti Teknologi Malaysia, 81300, Skudai, Johor Bahru–Darul Ta’zim, Malaysia

    Mat Nawi Wan Hassan

Authors
  1. Henry Nasution
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Mat Nawi Wan Hassan
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to Henry Nasution.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Nasution, H., Wan Hassan, M.N. Potential electricity savings by variable speed control of compressor for air conditioning systems. Clean Techn Environ Policy 8, 105–111 (2006). https://doi.org/10.1007/s10098-006-0040-0

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s10098-006-0040-0

Keywords

Search

Navigation