Potential of carbon dioxide in two refrigeration applications commonly encountered in the Netherlands

摘要

An inventory study of the energy use in cold storage installations in The Netherlands showed that frozen storage and combined chilled storage and distribution are responsible for a substantial part of the energy consumption of the sector. Tworeference complexes including a standard number of refrigerated rooms can represent these two categories of plants. These reference complexes are used to evaluate the potential of carbon dioxide transcritical or secondary cycles in these refrigerationapplications.First a second law analysis of the existing reference plants is presented identifying the contribution of the different components to the total irreversibility of the system. Then the comparable irreversibility losses are predicted when CO{sub}2 is to beused in the same plants as a primary (transcritical) or secondary refrigerant.Based on these results, the advantages and drawbacks of the two carbon dioxide options (transcritical / secondary) in such plants are compared talking the existing systems into account.