The Use of Synthetic Lubricants in Compressors

Synthetic Refrigeration Oils - Humidity Related Difficulties and Solutions

New lubricants have been developed to meet the performance demands of modem refrigerants and system components. A brief review of current refrigeration oil developments is presented. It is well known that the new lubricants used with polar refrigerants tend to absorb water. The ester hydrolysis process and the effect on the essential lubricant properties are described. The effect of increased w...

Selection and Performance of Synthetic and Semi-Synthetic Lubricants for Use with Alternative Refrigerants in Refrigeration Applications

Performance Evaluation of Nano-Lubricants at Thrust Slide-Bearing of Scroll Compressors

This paper presents the friction and anti-wear characteristics of nano-oil with a mixture of refrigerant oil and carbon nano-particles in the thrust slide-bearing of scroll compressors. Frictional loss in the thrust slide-bearing occupies a large part of total mechanical loss in scroll compressors. The characteristics of friction and anti-wear using nano-oil is evaluated using a thrust bearing ...

Use of Lubricants to Improve Compressor Efficiency

current world conditions require compressors to be both efficient and economical to manufacture. one means of improving efficiency in a rotary vane (or any) compressor is to use the lubricant as a heat transfer agent. A rotary vane refrigerator compressor was modified and instrumented for calorimeter testing so that the performance improvement could be identified. The changes and testing were c...

Reducing Hardware Complexity of Wallace Multiplier Using High Order Compressors Based on CNTFET

   Multiplier is one of the important components in many systems such as digital filters, digital processors and data encryption. Improving the speed and area of multipliers have impact on the performance of larger arithmetic circuits that are part of them. Wallace algorithm is one of the most famous architectures that uses a tree of half adders and full adders to increase the speed and red...