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Investigation of thermal properties of lubricants used in refrigeration systems.

Number: 1408

Author(s) : ÖZKAN A., UZEN S. Y., AYDIN R., KANTÜRK FİGEN A.

Summary

The growing global need for cooling systems exacerbates sustainability challenges by increasing energy consumption and environmental impacts. In compressors, thermal properties of the preferred lubricant play a critical role in reducing energy consumption and enhancing efficiency. The thermal stability of lubricant is a critical factor determining the performance and efficiency of compressors in refrigeration systems. High thermal stability means the ability of the lubricant to remain chemically intact under high temperature and pressure conditions, which increases durability during long-term use. Furthermore, thermally stable lubricants maintain their quality by strengthening resistance to oxidation and minimize wear and failures in the system. This improves energy efficiency, ensures low maintenance, and supports the long life and reliable operation of cooling systems such as refrigerators. With increased thermal conductivity, the heat transfer capacity of the lubricant improves, enabling efficient heat dissipation within the system, resulting in consistent cooling performance. Therefore, the thermal properties of the lubricant are an important parameter to consider in order to optimize the overall efficiency of refrigeration systems. This study aims to investigate the thermal properties of lubricants and their impact on compressor performance. The study investigated the thermal stability of lubricants through Thermogravimetric Analysis, oxidation resistance using Differential Scanning Calorimetry, heat transfer and cooling performance using Thermal Conductivity Meter, and rheological behavior by creating viscosity-temperature curves. The contribution of the lubricant to energy efficiency was compared with compressor calorimeter tests at the end of the study. Thus, compressor efficiency has been improved by using a lubricant with stronger thermal stability.

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  • Original title: Investigation of thermal properties of lubricants used in refrigeration systems.
  • Record ID : 30033614
  • Languages: English
  • Subject: Technology
  • Source: 2024 Purdue Conferences. 27th International Compressor Engineering Conference at Purdue.
  • Publication date: 2024/07/18

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