Heat Transfer T...

In a particular heat exchanger, identical fluids flow through the tubes at the same mass flow rate. Calculate the effectiveness of the heat exchanger if the hot fluid entry and exit temperatures are 70°C and 40°C and cold fluid enters at 27°C and leaves at 57°C.

Hot gases enter a heat exchanger at 200°C and leave at 150°C. The cold air enters at 40°C and leaves at 140°C. The capacity ratio of the heat exchanger will be:

In the counter-current heat exchanger, the ratio of heat capacity rates of cold and hot fluid is 1. If the effectiveness of the heat exchanger is 0.6, the number of transfer units are ____.

Steam enters the condenser at 287 K and leaves at 295 K. The condenser temperature is maintained at 303 K and the surface area of the tubes is 50 m². If the overall heat transfer coefficient is 2200 W/m²K, then the rate of condensation of steam (kg/min) ____ (At 303 K, h = 2453 kJ/kg)