entering at 10oC. The gas flow rate is 0.15 kg/s with mean specific heat capacity of 1.13 kJ/kgK. ?The water flow rate is 10 kg/s with specific heat capacity of 4.2 kJ/kgK. Calculate:i) the heat transfer rate ?ii) the exit temperature of the water?iii) the fouling factor Uf, if the heat transfer coefficients for the gases and water are 1800 and 2100 W/m2K respectively, and the surface area is 0.3 m2.(Ignoring heat transfer via conduction).
in no way had a secondary warmth exchanger clog up, particularly in case you have been only having a ordinary inspection performed, and if it grow to be blocked, there could have been different issues and the furnace might have failed or went out on a decrease or some thing. i'm suspicious that if it grow to be working high-quality without issues whilst he arrived...the service tech may be the priority. no longer constantly, yet..suspicious concern that grow to be inflicting no issues once you called, and probable doesnt exist + salesman + intense fees (even in canadian $) = you getting taken for a experience. Alot of situations some companies will supply a unfastened 2nd opinion, in step with threat supply that a shot. sturdy success.
If you want to be an engineer, you need to understand how to do these problems. It is not difficult but you must analyze the process of designing heat exchangers. If you do not understand how to do this type of problem, you will not become an engineer.
