Practice question

Question

A mixed fruit beverage with 12 °Brix having specifc heat of 4298 J kg-1 K 1 is being heated from 30 ᵒᶜ to 95 ᵒᶜ for pasteurization at a flow rate of 1000 L h ⁻¹ in a tubular heat exchanger. Steam at 100 ᵒᶜ is used as heating medium which is converted into condensate at 100 ᵒᶜ . If the density of beverage is 1075 kg m ⁻³ and the latent heat of steam at the given temperature is 2257 kJ kg ⁻¹ , the mass flow rate of steam (kg min ⁻¹ ) is (round off to 2 decimal places).