Experimental Study on the Thermal Behavior of a Domestic Refrigeration Compressor during Transient Operation in a Small Capacity Cooling System

Johann Wilfried Hopfgartner, Martin Heimel, Erwin Berger, Stefan Posch, Raimund Almbauer, Stefan Stangl

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

Abstract

Generally, domestic refrigerators and freezers are running in non-continuous operation mode most of the time, which is a necessity to match cooling capacity to thermal loads. In currently available domestic appliances it can be observed, that this matching is mainly realized in two different ways: On the one hand, a simple on/off control of the hermetic compressor is installed in lower priced appliances with limited energy efficiency for the mass market. On the other hand, modern top efficiency class appliances have a variable frequency controlled compressor installed. Both control strategies have a repetitive and transient change of thermodynamic states of the refrigerant in common.
For better understanding of these cyclic patterns in terms of internal temperature distribution, a state of the art domestic refrigeration compressor with a displacement of approximately 6 cubic centimeters is integrated in a commercial freezer. The compressor which has an on/off control is equipped with extensive measurement instrumentation. Several temperature probes are inserted and temperatures on surfaces inside and outside the compressor as well as refrigerant temperatures are logged for both cyclic and steady-state behavior.
Finally, a comparison between transient experimental data and steady-state data from a standardized calorimeter test bench is done.
Original languageEnglish
Title of host publication16th International Refrigeration and Air Conditioning Conference at Purdue
Publication statusPublished - 2016

Cite this

Hopfgartner, J. W., Heimel, M., Berger, E., Posch, S., Almbauer, R., & Stangl, S. (2016). Experimental Study on the Thermal Behavior of a Domestic Refrigeration Compressor during Transient Operation in a Small Capacity Cooling System. In 16th International Refrigeration and Air Conditioning Conference at Purdue

Experimental Study on the Thermal Behavior of a Domestic Refrigeration Compressor during Transient Operation in a Small Capacity Cooling System. / Hopfgartner, Johann Wilfried; Heimel, Martin; Berger, Erwin; Posch, Stefan; Almbauer, Raimund; Stangl, Stefan.

16th International Refrigeration and Air Conditioning Conference at Purdue. 2016.

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

Hopfgartner, JW, Heimel, M, Berger, E, Posch, S, Almbauer, R & Stangl, S 2016, Experimental Study on the Thermal Behavior of a Domestic Refrigeration Compressor during Transient Operation in a Small Capacity Cooling System. in 16th International Refrigeration and Air Conditioning Conference at Purdue.
Hopfgartner JW, Heimel M, Berger E, Posch S, Almbauer R, Stangl S. Experimental Study on the Thermal Behavior of a Domestic Refrigeration Compressor during Transient Operation in a Small Capacity Cooling System. In 16th International Refrigeration and Air Conditioning Conference at Purdue. 2016
Hopfgartner, Johann Wilfried ; Heimel, Martin ; Berger, Erwin ; Posch, Stefan ; Almbauer, Raimund ; Stangl, Stefan. / Experimental Study on the Thermal Behavior of a Domestic Refrigeration Compressor during Transient Operation in a Small Capacity Cooling System. 16th International Refrigeration and Air Conditioning Conference at Purdue. 2016.
@inproceedings{7fb4d859283a4f13aa8cf6228879b75e,
title = "Experimental Study on the Thermal Behavior of a Domestic Refrigeration Compressor during Transient Operation in a Small Capacity Cooling System",
abstract = "Generally, domestic refrigerators and freezers are running in non-continuous operation mode most of the time, which is a necessity to match cooling capacity to thermal loads. In currently available domestic appliances it can be observed, that this matching is mainly realized in two different ways: On the one hand, a simple on/off control of the hermetic compressor is installed in lower priced appliances with limited energy efficiency for the mass market. On the other hand, modern top efficiency class appliances have a variable frequency controlled compressor installed. Both control strategies have a repetitive and transient change of thermodynamic states of the refrigerant in common.For better understanding of these cyclic patterns in terms of internal temperature distribution, a state of the art domestic refrigeration compressor with a displacement of approximately 6 cubic centimeters is integrated in a commercial freezer. The compressor which has an on/off control is equipped with extensive measurement instrumentation. Several temperature probes are inserted and temperatures on surfaces inside and outside the compressor as well as refrigerant temperatures are logged for both cyclic and steady-state behavior.Finally, a comparison between transient experimental data and steady-state data from a standardized calorimeter test bench is done.",
author = "Hopfgartner, {Johann Wilfried} and Martin Heimel and Erwin Berger and Stefan Posch and Raimund Almbauer and Stefan Stangl",
year = "2016",
language = "English",
booktitle = "16th International Refrigeration and Air Conditioning Conference at Purdue",

}

TY - GEN

T1 - Experimental Study on the Thermal Behavior of a Domestic Refrigeration Compressor during Transient Operation in a Small Capacity Cooling System

AU - Hopfgartner, Johann Wilfried

AU - Heimel, Martin

AU - Berger, Erwin

AU - Posch, Stefan

AU - Almbauer, Raimund

AU - Stangl, Stefan

PY - 2016

Y1 - 2016

N2 - Generally, domestic refrigerators and freezers are running in non-continuous operation mode most of the time, which is a necessity to match cooling capacity to thermal loads. In currently available domestic appliances it can be observed, that this matching is mainly realized in two different ways: On the one hand, a simple on/off control of the hermetic compressor is installed in lower priced appliances with limited energy efficiency for the mass market. On the other hand, modern top efficiency class appliances have a variable frequency controlled compressor installed. Both control strategies have a repetitive and transient change of thermodynamic states of the refrigerant in common.For better understanding of these cyclic patterns in terms of internal temperature distribution, a state of the art domestic refrigeration compressor with a displacement of approximately 6 cubic centimeters is integrated in a commercial freezer. The compressor which has an on/off control is equipped with extensive measurement instrumentation. Several temperature probes are inserted and temperatures on surfaces inside and outside the compressor as well as refrigerant temperatures are logged for both cyclic and steady-state behavior.Finally, a comparison between transient experimental data and steady-state data from a standardized calorimeter test bench is done.

AB - Generally, domestic refrigerators and freezers are running in non-continuous operation mode most of the time, which is a necessity to match cooling capacity to thermal loads. In currently available domestic appliances it can be observed, that this matching is mainly realized in two different ways: On the one hand, a simple on/off control of the hermetic compressor is installed in lower priced appliances with limited energy efficiency for the mass market. On the other hand, modern top efficiency class appliances have a variable frequency controlled compressor installed. Both control strategies have a repetitive and transient change of thermodynamic states of the refrigerant in common.For better understanding of these cyclic patterns in terms of internal temperature distribution, a state of the art domestic refrigeration compressor with a displacement of approximately 6 cubic centimeters is integrated in a commercial freezer. The compressor which has an on/off control is equipped with extensive measurement instrumentation. Several temperature probes are inserted and temperatures on surfaces inside and outside the compressor as well as refrigerant temperatures are logged for both cyclic and steady-state behavior.Finally, a comparison between transient experimental data and steady-state data from a standardized calorimeter test bench is done.

M3 - Conference contribution

BT - 16th International Refrigeration and Air Conditioning Conference at Purdue

ER -