A Latching Mechanism for Unloading a Rotary Compressor

1999 ◽  
Author(s):  
Joseph L. Smith ◽  
Michael D. Webb ◽  
Stephen D. Umans
Keyword(s):  
Air Conditioning ◽  
Rotary Compressor ◽  
Electronic Control ◽  
Motor Speed ◽  
Air Conditioning System ◽  
Mechanical Unloading ◽  
Potential Alternative ◽  
Residential Air Conditioning ◽  
Rotary Vane Compressor ◽  
Capacity Performance

Abstract A vane latching mechanism for unloading a rotary vane compressor is described. Mechanical unloading is proposed as a potential alternative to electronic control of motor speed for variable compressor capacity. Performance of a demonstration compressor operating at part capacity in a residential air conditioning system is described.

scholarly journals Intelligent Residential Air-Conditioning System With Smart-Grid Functionality

2012 ◽  
Vol 3 (4) ◽  
pp. 2240-2251 ◽  
Author(s):  
Auswin George Thomas ◽  
Pedram Jahangiri ◽  
Di Wu ◽  
Chengrui Cai ◽  
Huan Zhao ◽  
...  
Keyword(s):  
Smart Grid ◽  
Air Conditioning ◽  
Air Conditioning System ◽  
Residential Air Conditioning

Theoretical Study of a Novel Four-Chamber Rotary Compressor: Design and Thermodynamic Analysis

2016 ◽  
Vol 819 ◽  
pp. 46-57
Author(s):  
Y.A. Alduqri ◽  
Md Nor Musa
Keyword(s):  
Thermodynamic Analysis ◽  
Air Conditioning ◽  
Theoretical Study ◽  
The Other ◽  
Rotary Compressor ◽  
Air Conditioning System ◽  
Compressor Design ◽  
Compressed Gas ◽  
Swept Volume ◽  
Design Simplicity

A novel four-chamber rotary compressor (FCRC) is being developed for a refrigerator and an air-conditioning system. The novelty lies in the usage of three rotating sleeves and two oppositely installed vanes each has one end fixed to an outer sleeve and the other end to a rotor, respectively. In this paper, the swept volume, the delivered pressure, the work and the power of the FCRC are formulated and analyzed. The compressor configuration and thermodynamic analysis are based on the 174 cc swept volume with R134a as the compressed gas. Considering the encouraging results, added by design simplicity of mainly cylindrical shaped components, the proposed FCRC is reckoned to be very suitable to be used for air-conditioning and refrigeration applications.

Design Study Comparison of Plain Finned Versus Louvered Finned-Tube Condenser Heat Exchangers

2003 ◽  
Author(s):  
Susan W. Stewart ◽  
Sam V. Shelton
Keyword(s):  
Heat Transfer ◽  
Optimum Design ◽  
System Performance ◽  
Air Conditioning ◽  
Finned Tube ◽  
Design Parameters ◽  
Air Conditioning System ◽  
Frictional Pressure Drop ◽  
Residential Air Conditioning ◽  
Tube Condenser

Enhanced fins are widely used in residential air conditioning system finned-tube condenser designs. While this heat transfer augmentation technique increases the heat transfer coefficient in the heat exchanger, it also increases the air side frictional pressure drop. These two effects compete with each other, making it difficult to determine the relative goodness between plain fin versus enhanced fin designs with realistic constraints. In the past, this design tradeoff has been largely determined by experimental trial and error or heuristic figures of merit. No studies are available showing the effect of fin augmentation on overall system performance under consistent cost and frontal area constraints. The residential air conditioning system model calculates all component and system performance parameters. The condenser design requires the specification of approximately ten design parameters. A search method is used to vary these ten parameters and reach an optimum design based on a COP (efficiency) figure-of-merit with condenser cost and other appropriate constraints. It was found that when optimized, louvered fin designs always show better system performance than the optimum plain fin design for the cases studied. However a decrease in system efficiency can result if louvers are merely added to a plain fin optimum design.

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