Nser at the rate of 4080 kg/h is heated from 35° to 75°C by an oil having a specific heat of 1900 Jke K. The erchanger is of a counter flow double pipe design. The oil enters at 110°C and leaves at 75°C Dtermine the area of the heat exchanger necessary to handle this load if the overall heat transfer coefficient is 320 W/m K. (15.82 m²] LE5000 keh of olcobol from 66°C to 40°C using 40 000 ta

Hot oil, which enter a cross-flow heat exchanger at 200 C and leave at 100 C, are used to heat water at a flow rate of 1.5 kg/s from 30 to 120 C. The overall heat transfer coefficient based on the water-side surface area is U = 220 W/m2 . K. Determine : a) the required water surface area Ac using the NTU method(let effectiveness €=0.65). b) Ac when we change the water outlet temperature to 130Cc) discuss the effect of changing the water outlet temperature to Ac? d)draw the temperature profile along the heat exchanger

! Required information Consider a water-to-water counterflow heat exchanger with these specifications. Hot water enters at 70°C while cold water enters at 20°C. The exit temperature of the hot water is 15°C greater than that of the cold water, and the mass flow rate of the hot water is 50 percent greater than that of the cold water. The product of heat transfer surface area and the overall heat transfer coefficient is 2200 W/K. Take the specific heat of both cold and hot water to be cp= 4180 J/kg.°C. NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. Cold water 20°C Hot water 40 °C Th, in Determine the effectiveness of the heat exchanger. The effectiveness of the heat exchanger is 0.72 *

Glycerin (cp=2400J/kgK) at 20oC and 0.5kg/s is heated by ethylene glycol (cp=2500J/kgK at 50oC at the same mass flow rate. The overall heat transfer coefficient for this thin-walled double-pipe parallel flow heat exchanger is 380W/m2K and the heat transfer surface area is 6.5m2. Determine Cmin and Cmax Find c, e, and NTU Determine heat transfer rate for the heat exchanger. Determine the outlet temperatures of both fluids.