Page 1 of 1
a) Water (Cp=4180 J/kg.∘C) is used to cool ethylene glycol (Cp=2670 J/kg.∘C) from 70∘C to 40∘C in a counter-flow doubl
Posted: Thu Jul 14, 2022 3:32 pm
by answerhappygod
- A Water Cp 4180 J Kg C Is Used To Cool Ethylene Glycol Cp 2670 J Kg C From 70 C To 40 C In A Counter Flow Doubl 1 (37.96 KiB) Viewed 34 times
a) Water (Cp=4180 J/kg.∘C) is used to cool ethylene glycol (Cp=2670 J/kg.∘C) from 70∘C to 40∘C in a counter-flow double pipe heat exchanger at a mass flow rate of 0.5 kg/s. The initial temperature of water is 25∘C. Ethylene glycol flows at a total rate of 0.3 kg/s. If the overall heat transfer coefficient is 250 W/m2, calculate: i. The rate of heat transfer (2 marks) ii. The exit temperature of water (2 marks) iii. Log Mean Temperature Δ TLM (4 marks) iv. Surface heating area, As (2 marks)