A heat exchanger is used to heat cold water (CP = 4.18 kJ/kgK) entering at 12 ºC at a rate of 1.2 kg/s by hot air (CP = 1.0 kJ/kgK) at 90ºC at rate of 2.5 kg/s. The highest rate of heat transfer in the heat exchangers is:
1
82kW
2
195 kW
3
391 kW
4
None of these
5
Question Not Attempted