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A reduced GWP replacement for HFC-134a in centrifugal chillers: XP10 measured performance and projected climate impact.

Number: pap. 2487

Author(s) : KONTOMARIS K., KAUFFMAN J. P., KULANKARA S.

Summary

The performance of XP10, a new refrigerant with a reduced GWP, in a centrifugal chiller designed for HFC-134a with a cooling capacity of 1969.44 kW (560 tons) was measured under full and part load conditions and compared to performance with HFC-134a. Measured chiller energy efficiencies with XP10 were comparable to those with HFC- 134a. They resulted in 0.6% higher energy consumption for XP10 when integrated over a representative profile of partial loads as described by AHRI Standard 550/590. Based on the measured chiller performance, XP10 could be considered a near drop-in replacement for HFC-134a in centrifugal chillers. It could replace HFC-134a in existing chillers or enable optimized new chiller designs without extensive equipment and no flammability code modifications. The Total Equivalent Warming Impact (TEWI) of a chiller with XP10 was estimated under representative scenarios and compared to TEWI with HFC-134a. Use of XP10 could significantly reduce chiller global warming impact relative to HFC-134a, when chiller refrigerant losses are unavoidably high or when electricity is generated with low GHG emissions. XP10 has the potential to be a more environmentally sustainable future option for medium pressure centrifugal chillers.

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Pages: 10 p.

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Details

  • Original title: A reduced GWP replacement for HFC-134a in centrifugal chillers: XP10 measured performance and projected climate impact.
  • Record ID : 30006647
  • Languages: English
  • Source: 2012 Purdue Conferences. 14th International Refrigeration and Air-Conditioning Conference at Purdue.
  • Publication date: 2012/07/16

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