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    Item type:Article, Access status: Open Access ,
    Wykorzystanie czynników chłodniczych R507 i R404A w górniczej chłodziarce powietrza
    (Wydawnictwa AGH, 2005) Filek, Krzysztof; Łuska, Piotr; Nowak, Bernard
    In this work is raised a problem of the air refrigeration with a help of the mining cold-air refrigerator wit a direct action, where is used two pre-ecological refrigerants - R404A and R 507. The compression refrigerator TS-300 was examined on the test stand at 90 variants its work (on 45 for each refrigerants). Those variants were differed in properties (a temperature, a humidity, a flow rate of air refrigeration). The results of the thermodynamic variable measurements after pre-cooling were compared with the results of numerical calculations, which were made by using the mathematical model. The effects of measurements and calculations, which were closed to the mining conditions, were shown in the charts