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The use of NH3 and CO2 heat pumps in food processing plants with cold storage facilities.

Author(s) : VISSER K.

Summary

In this paper, the benefits of using heat pumps as an augmentation to two-stage ammonia plants and those of two-stage transcritical CO2 plants are discussed in terms of reductions in energy consumption and attendant greenhouse gas emissions. The concept of the "reverse cascade" heat pumps is introduced. This is a CO2 heat pump using the high stage NH3 compressor discharge as a heat source via a CO2 refrigerated ammonia cascade condenser. It is clearly shown that the application of heat pumps using existing high stage refrigeration as a heat source reduces the specific energy consumption for heating and cooling by between 37 and 40% in the case of livestock conversion plants without rendering. This holds true for both ammonia heat pumps and reverse cascade heat pumps. There is no increase in specific emissions, although there can be.

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Pages: 2010-1

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Details

  • Original title: The use of NH3 and CO2 heat pumps in food processing plants with cold storage facilities.
  • Record ID : 2010-0698
  • Languages: English
  • Subject: General information
  • Source: 1st IIR International Conference on Sustainability and the Cold Chain
  • Publication date: 2010/03/29

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