An ice skating rink is located in a building where the air is at T air = 20C and the
An ice skating rink is located in a building where the air is at Tair = 20°C and the walls are at Tw = 25°C. The convection heat transfer coefficient between the ice and the surrounding air is h = 10 W/m2 · K. The emissivity of ice is ε = 0.95. The latent heat of fusion of ice is hif = 333.7 kJ/kg and its density is 920 kg/m3.
(a) Calculate the refrigeration load of the system necessary to maintain the ice at Ts = 0°C for an ice rink of 12 m by 40 m.
(b) How long would it take to melt d = 3 mm of ice from the surface of the rink if no cooling is supplied and the surface is considered insulated on the back side?
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