Calculation of temperature distributions in the rotors of oil-injected screw compressors

Hsieh, Sheng-Hung; Shih, Yi-Pei; Hsieh, Wen‐Hsin; Lin, Feng; Tsai, Ming-Chieh

doi:10.1016/j.ijthermalsci.2011.02.006

Cited by 27 publications

(14 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These assumptions for peak temperature in the rotors and casing neglect heat flux along the rotors from the bearings; this can be significant at certain operating duties. 6 As long as the peak averaged fluid temperature is greater than or equal to the average oil temperature in the bearings then the current assumptions are fair.…”

Section: Thermal Analysis Of Clearance Distortionsmentioning

confidence: 97%

“…Despite additional complexity, use of some assumptions or empirical factors is difficult to avoid. 6 The following procedure is not intended to calculate the actual local temperature on any given component, rather the average fluid boundary temperatures will be used to provide a good estimation of the maximum temperature that the compressor components can reach.…”

Section: Thermal Analysis Of Clearance Distortionsmentioning

confidence: 99%

See 1 more Smart Citation

Design and evaluation of rotor clearances for oil-injected screw compressors

Buckney

Kovačević

Stošić

2016

Proceedings of the Institution of Mechanical Engineers, Part E:

View full text Add to dashboard Cite

This is the accepted version of the paper.This version of the publication may differ from the final published version. Permanent AbstractDesigning twin screw compressors to safely operate at higher than normal temperatures poses a challenge as the compressor must accommodate larger peak thermal distortions while maintaining efficiency at nominal operating conditions. This paper will present a case study of an oil injected compressor tested at elevated discharge temperatures with original and revised clearances. A procedure is presented to use boundary conditions derived from a chamber model to approximate component temperature distributions that are then used to predict possible thermal distortions and the resulting effect on clearance gaps. The original and revised clearance designs are evaluated and performance penalties incurred due to the modifications are discussed.

show abstract

Section: Thermal Analysis Of Clearance Distortionsmentioning

confidence: 97%

Section: Thermal Analysis Of Clearance Distortionsmentioning

confidence: 99%

Design and evaluation of rotor clearances for oil-injected screw compressors

Buckney

Kovačević

Stošić

2016

Proceedings of the Institution of Mechanical Engineers, Part E:

View full text Add to dashboard Cite

show abstract

“…The oil inlet temperature had greater effects than the oil flow rate. Hsieh et al [14] calculated temperature distributions in the rotors of an oil-injected air screw compressor. The heat transfer between bearings and rotors, and between the air and screw, were discussed and analyzed.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation into the Effect of Oil Injection on the Performance of a Variable Speed Twin-Screw Compressor

Wang

et al. 2018

Energies

View full text Add to dashboard Cite

Abstract:In this paper, the effect of oil injection flow rate on the performance of a variable speed twin-screw compressor was investigated experimentally. Comprehensive experiments were conducted at different compressor rotational speeds and oil injection flow rates. As the rotational speed increased from 1000 to 3000 rpm, the compressor volumetric and adiabatic efficiencies increased while the specific power consumption decreased. However, the oil injection flow rate showed different influences on the compressor performance. As the oil injection flow rate increased from 27 to 50 L/min, the adiabatic and volumetric efficiencies increased while the compressor discharge temperature and specific power decreased. Further increases in the oil injection flow rate had little effect on compressor performance at flow rates above 50 L/min. The analysis indicated that the oil injection flow rate was limited by the discharge temperature at low compressor rotational speeds and was a trade-off among two efficiencies and specific power consumption at high rotational speeds.

show abstract

“…And the effect of superfeed pressure on power, efficiency, and coefficient of performance were analyzed. Hsieh et al 5 simulated the temperature distribution of rotors for an oil-injected screw compressor, which provided the reference to calculate the thermal deformation of rotors. Liu et al 6 developed a mathematical model by experimental data regression to calculate the performance of screw compressor in a refrigeration system, and the volumetric displacement, input power, and vapor injection mass flow rate showing a good agreement with the experimental results.…”

Section: Introductionmentioning

confidence: 99%

“…Hsieh et al. 5 simulated the temperature distribution of rotors for an oil-injected screw compressor, which provided the reference to calculate the thermal deformation of rotors. Liu et al.…”

Section: Introductionmentioning

confidence: 99%

Analysis of performance of two-stage screw compressor under various operating conditions

Liu

Yang

Zhao

et al. 2016

Proceedings of the Institution of Mechanical Engineers, Part A:

View full text Add to dashboard Cite

The screw compressor has a promising application in the process industry due to its appropriate pressure and flow rate. In this paper, a mathematical model of a two-stage oil-free screw compressor is developed to simulate the working process under various operating conditions. The results show that the interstage pressure of the two-stage oil-free screw compressor is built automatically depending on the equal mass flow rate of each stage. It increases with the suction pressure, discharge pressure, and clearance, but decreases with rotating speed. Although the power consumption of the 2nd stage decreases with the suction pressure, the power consumption of the whole compressor always increases with the suction pressure, discharge pressure, rotating speed, and clearance. The volumetric efficiency increases with the suction pressure and rotating speed, but decreases with the discharge pressure and clearance for each stage. The indicated efficiency increases with the rotating speed but decreases with the clearance. A maximum indicated efficiency is found. The volumetric and indicated efficiency of the 2nd stage is more sensitive to the operating condition than that of the 1st stage.

show abstract

Calculation of temperature distributions in the rotors of oil-injected screw compressors

Cited by 27 publications

References 22 publications

Design and evaluation of rotor clearances for oil-injected screw compressors

Design and evaluation of rotor clearances for oil-injected screw compressors

Experimental Investigation into the Effect of Oil Injection on the Performance of a Variable Speed Twin-Screw Compressor

Analysis of performance of two-stage screw compressor under various operating conditions

Contact Info

Product

Resources

About