What would be the temperature rise in the oil from viscous dissipation under the conditions of Prob. 5.4 if the specific heat of the oil is 0.5 cal/g.°C and its density is 820 kg/m³?

Prob. 5.4

Calculate the power required per meter of width of stream to force lubricating oil through the gap between two horizontal flat plates under the following conditions:

Distance between plates, 6 mm

Flow rate of oil per meter of width, 100 m³/h

Viscosity of oil, 25 cP

Density of oil, 0.88 g/cm³

Length of plates, 3 m

Assume that the plates are very wide in comparison with the distance between them and that end effects can be neglected.