Determine the maximum heat transport capability and the liquid flow rate of a water heat pipe operating at 100 C and atmospheric pressure. The heat pipe is 30 cm long and has an inner diameter of 1...

Determine the maximum heat transport capability and the liquid flow rate of a water heat pipe operating at 100C and atmospheric pressure. The heat pipe is 30 cm long and has an inner diameter of 1 cm. It is inclined at 30C with the evaporator above the condenser. The wick consists of four layers of 250-mesh wire screen (wire diameter of 0.045 mm) on the inner surface of the pipe. The pore radius is 0.002 cm and the permeability is 0.3
 10^–10
m². Water properties at 100C are

₁
= 958 kg/m³,

₁
= 279
 10^–6
N s/m²,

₁
= 58.9
 10^–3
N/m and h_fg
= 2260 kJ/kg. Assume perfect wetting.