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Economy of replacing a refrigerant in a cooling system for preparing chilled water / B. Kulcar in International journal of refrigeration, Vol. 33 N° 5 (Août 2010) 

Public ISBD [article]  in International journal of refrigeration > Vol. 33 N° 5 (Août 2010) . - pp. 989-994 Titre : Economy of replacing a refrigerant in a cooling system for preparing chilled water Titre original : Remplacement du frigorigène dans un système utilisé pour préparer de l'eau glacée : impact financier Type de document : texte imprimé Auteurs : B. Kulcar, Auteur ; D. Goricanec, Auteur ; J. Krope, Auteur Année de publication : 2010 Article en page(s) : pp. 989-994 Note générale : Génie Mécanique Langues : Anglais (eng) Mots-clés : Refrigeration  system  Industrial  application  Production  Chilled  water  Conversion  Refrigerant  R22  R407C  Calculation  Energy  consumption Index. décimale : 621.5 Energie pneumatique. Machinerie et outils. Réfrigération Résumé : Due to the negative impact of refrigerants containing Cl and Br on the ozone layer, these refrigerants are being replaced with refrigerants containing fluorine. The article describes the replacing of refrigerant R22 in a cooling system for preparing chilled water, used for cooling reactors producing phenol–formaldehyde resins. After analyzing the existing state and the capabilities of the cooling system, the refrigerant R22 was replaced with refrigerant R407C. For both refrigerants a calculation of the cooling system has been made, the results of which are given in the form of diagrams depending on the evaporation temperature of the refrigerant. Profitability evaluation of replacing a refrigerant was carried out using the method of the net present value (NPV), the coefficient of profitability and the period of time in which the investment is going to return itself. Also the calculations of the savings of electrical energy needed for the running of the compressors and the price of chilled water have been done, using the method of internal profitability level (IPL). DEWEY : 621.5 ISSN : 0140-7007 En ligne : http://www.sciencedirect.com/science/article/pii/S0140700710000393 [article] Economy of replacing a refrigerant in a cooling system for preparing chilled water = Remplacement du frigorigène dans un système utilisé pour préparer de l'eau glacée : impact financier [texte imprimé] / B. Kulcar, Auteur ; D. Goricanec, Auteur ; J. Krope, Auteur . - 2010 . - pp. 989-994. Génie Mécanique Langues : Anglais (eng) in International journal of refrigeration > Vol. 33 N° 5 (Août 2010) . - pp. 989-994 Mots-clés : Refrigeration  system  Industrial  application  Production  Chilled  water  Conversion  Refrigerant  R22  R407C  Calculation  Energy  consumption Index. décimale : 621.5 Energie pneumatique. Machinerie et outils. Réfrigération Résumé : Due to the negative impact of refrigerants containing Cl and Br on the ozone layer, these refrigerants are being replaced with refrigerants containing fluorine. The article describes the replacing of refrigerant R22 in a cooling system for preparing chilled water, used for cooling reactors producing phenol–formaldehyde resins. After analyzing the existing state and the capabilities of the cooling system, the refrigerant R22 was replaced with refrigerant R407C. For both refrigerants a calculation of the cooling system has been made, the results of which are given in the form of diagrams depending on the evaporation temperature of the refrigerant. Profitability evaluation of replacing a refrigerant was carried out using the method of the net present value (NPV), the coefficient of profitability and the period of time in which the investment is going to return itself. Also the calculations of the savings of electrical energy needed for the running of the compressors and the price of chilled water have been done, using the method of internal profitability level (IPL). DEWEY : 621.5 ISSN : 0140-7007 En ligne : http://www.sciencedirect.com/science/article/pii/S0140700710000393