Features of calculation of refrigerating machines with combined cooling of condensers taking into account climatic and economic factors

Abstract

A method for calculating refrigerating machines with a condensation unit implementing water and air cooling methods is proposed taking into account the economic and climatic features of the calculated region. Since economic and climatic factors have different degrees of influence on the energy efficiency and efficiency of refrigerating machines over the entire range of changing temperatures of cooling media, the results of calculating refrigerating machines according to the proposed methodology allow making informed decisions about the layout of the condensation unit both at the design stage and at the stage of developing a program for managing the refrigeration unit throughout the year. A comparative analysis of refrigerating machines with combined cooling of condensers for the regions of Omsk and Berlin is carried out. The most significant influence of the climatic factor at low temperatures of the cooling air and the influence of the cost of cooling water at high air temperatures were revealed.

Keywords

• combined cooling
• condensation unit
• water and air cooling
• ecology
• energy saving
• mathematical model
• refrigeration machine