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The process gas (natural gas) flows inside the tubes connected to the chiller at 41[degrees]C and countercurrently exchanges heat and gives up its energy with the liquid refrigerant surrounding the tubes.
The gas and the liquid phases flow through the absorber countercurrently. At contact elements (stages), mass and heat transfer occurs.
(3) When air is passed countercurrently through the moving pellet bed, heat transfer is significantly enhanced as shown in Table 5a and Equation (12).

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