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Benefits of superheat recovery on chillers: case study for a hotel installation.

Author(s) : RANE M. V., TANDALE M. S.

Summary

A novel patented vented double wall tube-tube heat exchanger (TTHE) was recently commissioned on a chiller. A 60 TR chiller installed in a hotel is used to provide chilled water for air conditioning purpose. Superheat from compressed refrigerant vapours of the semi-hermetic reciprocating chiller was used to heat the tap water from 30 to 65 °C. The benefits of incorporating superheat recovery water heater (SHRWH) in the refrigerant circuit of the chiller are presented in the paper. Practical experiences of commissioning the TTHE on a 60 TR R22 based chiller are presented. The SHRWH unit installed at Hotel Fariyas in Mumbai, six months ago, has been saving about 80 litres of diesel per day needed for heating water. Chiller cooling capacity is increased by 30% and COP increased by 20%. Payback calculated for this installation is about three months. The successful installation of this SHRWH has reduced CO2 emission by 36 tons during the last six months of operation.

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Details

  • Original title: Benefits of superheat recovery on chillers: case study for a hotel installation.
  • Record ID : 2004-2983
  • Languages: English
  • Source: 21st IIR International Congress of Refrigeration: Serving the Needs of Mankind.
  • Publication date: 2003/08/17

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