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Improving thermal and flow properties of chilled water. 2. Facility construction and flow tests.

Author(s) : LORSCH H. G., MURALI K., CHANDRATRE K., CHO Y. I.

Summary

A mixture of two n-alkanes (paraffin waxes) has a phase-change temperature between the usual supply and return temperatures of chilled-water systems. Adding such a phase-change material (PCM) to water significantly increases its volumetric thermal capacity (Lorsch 1995). The paper describes 1) the construction of an experimental facility and 2) experiments that evaluated the behaviour of water-PCM-surfactant mixtures under conditions encountered in building chilled-water systems. Increases in volumetric thermal capacity of such mixtures up to 20% over water were demonstrated accompanied by presure drop increases of less than 5%.

Details

  • Original title: Improving thermal and flow properties of chilled water. 2. Facility construction and flow tests.
  • Record ID : 1998-1647
  • Languages: English
  • Source: ASHRAE Transactions.
  • Publication date: 1997
  • Document available for consultation in the library of the IIR headquarters only.

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