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A microscale monolithic absorption heat pump.

Number: pap. n. R17, 2516

Author(s) : DETERMAN M. D., GARIMELLA S.

Summary

A comprehensive development of a miniaturized thermally activated cooling system is reported here. This study represents the first ever conceptualization, design, fabrication and successful experimental demonstration of a thermally activated microscale absorption heat pump for miniaturized or mobile applications. A 300 W nominal cooling capacity ammonia-water absorption heat pump with overall dimensions of 200 × 200 × 34 mm and a mass of 7 kg was fabricated and successfully tested over a range of heat sink temperatures from 20 to 35°C and desorber thermal input rates ranging from 500 to 800 W. Measured evaporator coolant heat duties ranged from 136 to 300 W, while system COPs ranged from 0.247 to 0.434. At a nominal rating condition of 35°C heat sink temperature, the maximum thermal input of 800 W produced a cooling effect of 230 W, representing a COP of 0.29.

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Pages: 7 p.

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Details

  • Original title: A microscale monolithic absorption heat pump.
  • Record ID : 30000776
  • 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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