Question

(d) A counter flow heat exchanger is used to heat air entering at 400°C with a flow rate 07of 6 kg/s by exhaust gas entering at 800°C with a flow rate of 4 kg/s. The overallheat transfer coefficient is 100 W/mʻK and outlet temperature of the air is 551.5°C.The specific heat at constant pressure for both air and exhaust gas can be taken as1100 J/kgK. Calculate:(i) Heat transfer area needed,(ii) Number of transfer units.​

Answer 1

Answer:

A heat exchanger in industry is literally exposed to a bad atmosphere: paints, heat, acids, exhaust gases, brine or humidity put material and processing to the test around the clock.

Polybloc plate heat exchangers meet these requirements with the best quality – for all industrial applications. Worked with the highest precision and quality. For maximum durability, efficiency and energy savings.