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Experimental analysis of a Stirling refrigerator employing jet impingement heat exchanger and nanofluids.

Number: pap. n. R20, 2334

Author(s) : CELIK S., NAGESHWARAN S., BACHU K.

Summary

A free-piston Stirling cooler was implemented into a 27 liter mini refrigerator. Two different fluids were employed as the working fluid. The tested fluids were water and a nanofluid which consisted of dispersed aluminum oxide particles with a volume fraction of 23%. The circulation of the working fluids in the loop was driven by a submersible pump. A jet-impingement heat exchanger was designed, built and tested with three different fluid types for comparison. The unique heat exchanger with two inlets (one circular jet and one rectangular slot) and a single outlet was implemented on the cold side of the Stirling cooler. On the experimental side, temperature readings at the critical locations of the cooling system were recorded using T-type thermocouples and a data acquisition system. For the sake of repeatability, both fluids were tested for five times and the temperature values obtained from each location were averaged among the five tests. In addition, the flow cases for both fluids were simulated using a commercial CFD software. A close agreement in between the experimental and numerical analyses was observed.

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Pages: 7 p.

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Details

  • Original title: Experimental analysis of a Stirling refrigerator employing jet impingement heat exchanger and nanofluids.
  • Record ID : 30000798
  • Languages: English
  • Subject: Technology
  • Source: 2010 Purdue Conferences. 13th International Refrigeration and Air-Conditioning Conference at Purdue.
  • Publication date: 2010/07/12

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