Select Page

## Study the Effect of Unstable Air Flow in the Suction and Discharge System on the Performance of Reciprocating Air Compressor

Journal of Advanced Research in Fluid Mechanics and Thermal Sciences
Volume 65, No. 1, January 2020, Pages 54-71

Haqi Ismael Qatta1, Abdulrahman Shakir Mahmood2, Laith Jaafer Habeeb3,*
1 University of Technology, Nanotechnology and Advanced Materials Research Center. Baghdad, Iraq
2 University of Technology, Environmental Research Center. Baghdad, Iraq
3 University of Technology, Training and Workshop Research Center. Baghdad, Iraq
*Corresponding author: laithhabeeb1974@gmail.com

## KEYWORDS

Reciprocating air compressor; Volumetric efficiency; Suction pipe

## ABSTRACT

This research aims at studying the effect of unstable air flow in the suction and discharge system on the performance of reciprocating air compressor. The study was conducted on a reciprocating air compressor with two cylinders diagonally, which operates in three stages to generate the required pressure and cooling between the two cylinders by the air. To clarify the flow, three different pipes in length and diameter were used. A mathematical model was prepared to calculate the one-dimensional unstable flow in the pipes by using the characteristics method and the flow relationships that include effect of friction losses, change of entropy and heat transfer; as well as, the compressive waves formed in the pipes with their effect on the flowing mass inside the cylinder and the dynamic behavior of the compressor valves were predicted. In addition, the pressure, temperature, volume, mass and efficiency were calculated, and an optimal method was adopted to solve the differential equations system through numerical analysis and by using Rung-Kutta method. The results manifested that the use of multi-stage reciprocating air compressor gives a high efficiency due to the air cooling, and the length and diameter of the suction pipe and the speed of compressor have an effect on the capacity of compressive waves which affect the final pressure generated by the compressor that causes an increase in volumetric efficiency.

MLA
Haqi Ismael, Qatta, et al. “Study the Effect of Unstable Air Flow in the Suction and Discharge System on the Performance of Reciprocating Air Compressor.” Journal of Advanced Research in Fluid Mechanics and Thermal Sciences 65.1 (2020): 54-71.

APA
Haqi Ismael, Q., Abdulrahman, S. M., & Laith, J. H.(2020). Study the Effect of Unstable Air Flow in the Suction and Discharge System on the Performance of Reciprocating Air Compressor. Journal of Advanced Research in Fluid Mechanics and Thermal Sciences, 65(1), 54-71.

Chicago
Haqi Ismael Qatta, Abdulrahman Sahir Mahmood and Laith Jaafer Habeeb. “Study the Effect of Unstable Air Flow in the Suction and Discharge System on the Performance of Reciprocating Air Compressor.” Journal of Advanced Research in Fluid Mechanics and Thermal Sciences. 65, no. 1 (2020): 54-71.

Harvard
Haqi Ismael, Q., Abdulrahman, S.M., and Laith, J.H., 2020. Study the Effect of Unstable Air Flow in the Suction and Discharge System on the Performance of Reciprocating Air Compressor. Journal of Advanced Research in Fluid Mechanics and Thermal Sciences 65(1), pp. 54-71.

Vancouver
Haqi Ismael Q, Abdulrahman SM, Laith JH. Study the Effect of Unstable Air Flow in the Suction and Discharge System on the Performance of Reciprocating Air Compressor. Journal of Advanced Research in Fluid Mechanics and Thermal Sciences. 2020;65(1): 54-71.

## REFERENCES

[1] Costagliola, MichaeL. “The theory of spring-loaded valves for reciprocating compressors.” Trans. ASME, J. AppLied Mech. 17, no. 4 (1950): 415-420.
[2] Benson, R. S., A. Azim, and A. S. Ucer. “Some further analysis of reciprocating compressor systems.” (1974).
[3] Giacomelli, E., F. Falciani, and S. Manetti. “A new system to simulate the influence of pressure pulsation on reciprocating compressor valve behaviour.” Quaderni Pignone 46 (1988): 3-17.
[4] Mahmood A. “The unstable flow in the suction system of reciprocating internal combustion engines.” Master’s thesis, University of Technology, 1994.
[5] Da Riva, Enrico, and Davide Del Col. “Performance of a semi-hermetic reciprocating compressor with propane and mineral oil.” International journal of refrigeration 34, no. 3 (2011): 752-763.
[6] Kim, Sanghyeon, Cheolung Cheong, Jaeseong Park, Haeseung Kim, and Hyojae Lee. “Investigation of flow and acoustic performances of suction mufflers in hermetic reciprocating compressor.” International Journal of Refrigeration 69 (2016): 74-84.
[7] Siti Nurul Akmal Yusof, Yutaka Asako, Tan Lit Ken, and Nor Azwadi Che Sidik. “Computational Analysis on the Effect of Size Cylinder for the Irreversible Process in a Piston-Cylinder System using ICEDALE Method.” CFD Letters 11, no. 4 (2019): 92-104.
[8] Jawad, Layth H., Shahrir Abdullah, Rozli Zulkifli, and Wan Mohd Faizal Wan Mahmood. “Numerical Investigation on the Effect of Impeller Trimming on the Performance of a Modified Compressor.” CFD Letters 5, no. 4 (2013): 174-184.
[9] Ozsipahi, Mustafa, Haluk Anil Kose, Sertac Cadirci, Husnu Kerpicci, and Hasan Gunes. “Experimental and numerical investigation of lubrication system for reciprocating compressor.” International Journal of Refrigeration 108 (2019): 224-233.
[10] Paul C. Hanlon. Compressor Handbook. New York: McGraw-Hill, 2001.
[11] Cherkassky, V. Pump-Fans-Compressors. Moscow: Mir Publishers, 1997.
[12] R. K. Rajput. A Textbook of Internal Combustion Engines. Second Edition. India: Laxmi Publications (P) Ltd, 2007.
[13] Radermacher Reinhard, Lorenzo Cremaschi, and Robert Andrew Schwentker. “Modeling of oil retention in the suction line and evaporator of air-conditioning systems.” HVAC&R Research 12, no. 1 (2006): 35-56.
[14] R. K. Rajput. A Textbook of Thermal Engineering. SI Units, 9th Edition, 2013.
[15] Evans, Dominic, and Andrew Ward. “The Reduction of Turbocharger Whoosh Noise for Diesel Powertrains.” In 8th International Conference on Turbochargers and Turbocharging, London, United Kingdom, pp. 29-42. 2006.