Part II – Show your work [19 Marks]
A shell-and-tube heat exchanger with 2-shell passes and 12-tube passes is used to heat water
p |
(c = 4180 J/kg×o C) in the tubes from 30oC to 90oC at a rate of 4.3 kg/s. Heat is supplied by hot oil
p |
(c = 2300 J/kg×o C) that enters the shell side at 180oC at a rate of 12 kg/s. For a tube-side overall heat
transfer coefficient of 420 W/m2 o C is given. Use LMTD Method
Determine the rate of heat transfer in this heat exchanger [4 Marks]
Determine the outlet temperature of the oil [4 Marks]
determine the heat transfer surface area on the tube side [11 Marks]
6. A shell-and-tube heat exchanger with 2-shell passes and 12-tube passes is used to heat water (c 4,180 J/kg K) flowing at a rate of 4.5 kg/s in the tubes from 20°C to 70°C. Heat is supplied by hot oil (cp 2300 J/kg K) that enters the shell side at 170°C at a rate of 10 kg/s. If overall heat transfer coefficient on the tube-side is 350 W/m-K, determine the heat transfer surface area on the tube side.
2.- Hot oil (Cp = 2200 J/kg °C) is to be cooled by water (Cp = 4180 J/kg °C) in a 2-shell-passes and 12-tube-passes heat exchanger. The tubes are thin-walled and are made of copper with a diameter of 1.8 cm. The length of each tube pass in the heat exchanger is 3 m. Water flows through the tubes at a total rate of 0.1 kg/s, and the oil through the shell at a rate of 0.2 kg/s. The water...
2. (35P) Ashell-and-tube heat exchanger with 1-shell pass and 20-tube passes is used to heat glycerin (Cp = 2480 J/kg) in the shell, with hot water in the tubes. The tubes are thinwalled and have a diameter of 1.5 cm and length of 2 m per pass. The hot water (Cp=4180 J/kg Centers the tubes at 102°C at a rate of 9 kg/s and leaves at 55°C. Overall heat transfer coefficient U=13900 W/m2C. The glycerin enters the shell at 15°C...
be clear Problem 3 (60 Points). A 1-2 shell-and-tube heat exchanger must be designed to heat 2.5 kg/s of water from 15 to 85°C. The heating is to be accomplished by passing hot engine oil at a rate of 5.2 kg/s, which is available at 160°C, through the shell side of the exchanger. The oil is known to provide an average convection coefficient of 400 W/m2K on the outside of the tubes. Ten tubes passes the water through the shell....
Problem 2: Heat exchanger (25 points) Cold water (op 4179 J/kg K) enters the tubes of a heat exchanger at 20 °C at a rate of 3 kgs. while hot oil (cp 2200 J/kg.K) enters the shell at 130 C at the same mass flow rate and leaves at 60°C The heat exchanger consistsoftwo shells and 20 tubes, each executing four passes (two passes per shell). If the W/m2-K, assume the tube wall is very thin with convective heat transfer...
Can you please answer the following question 0. (CLO6 - 4 Marks) A counter-flow double-pipe heat exchanger is to heat water from 20°C to 80°C at mass flow rate of 1.5 kg's. The heating is to be accomplished by hot oil available at 150C at a mass flow rate of 2.5 kg/s. The inner tube is thin-walled and has a diameter of 1.5 cm with the length of 60 m. Fluid property: Fluid Type Mass flow rate, The Specific heat,...
Part II - Show your work (19 Marks] 16 Cold water (Cp = 4180 J/kg. "C) leading to a shower enters a thin-walled double-pipe counter flow heat exchanger at 15°C at a rate of 0.25 kg/s and is heated to 45°C by hot water (Cp = 4190 J/kg. "C) that enters at 100°C at a rate of 3 kg/s. If the overall heat transfer coefficient is 950 W/m2. C, determine the rate of heat transfer and the heat transfer surface...
PROBLEM 4 (20 pts) Water at 25 °C is used to cool oil from 120 °C to 80 °C. Oil flows at a rate of 1 kg/s in a tube of inside diameter 1.6 cm and outside diameter 1.9 cm. The tube makes 18 passes in a shell. Water flows through the shell at a rate of 1.5 kg/s. The water side heat transfer coefficient is 12,000 W/m2°C. Oil properties at 100 °C are: Cp = 2219J/(kg.), k = 0.137...
Cold water with properties as shown in Table 4 flows at rate of 4 kg/s is heated from 28 oC to 54 oC in a shell-and-tube heat exchanger as shown in Figure 4.The cold water inters the tubes through thin-walled tubes, each tube has diameter of 19 mm, and the average velocity inside each tube is 0.355 m /s. The shell side, one pass is used with hot water as the heating fluid 1.8 kg/s entering the exchanger at 93...
QUESTION 2 2. A shell and tube heat exchanger with two shell passes and four tube passes cools a chemical with a specific heat of 2385 J/kg K at a rate of 1.25 kg/s from 140°C to 80°C, using water at 35°C. The outlet temperature of the water is 85°C. Determine the area of heat exchanger if U= 800 W/m2-K. If the unit is operated with flow rates doubled, determine the heat transfer. Also determine the heat transfer if the...