QUESTION 8 A concentric-tube, counter-flow heat exchanger, as shown below, is used to cool mercury [C. h= 1,370 J/kg - °C] flowing at a rate of 1.0 kg/s from 110°C to 70°C. The cooling fluid is water entering the heat exchanger at a temperature of 30°C and flow rate of 0.2 kg/s. The overall heat transfer coefficient of the exchanger is U- 250 W/m2.°C. Water

QUESTION 8 A concentric-tube, counter-flow heat exchanger, as shown below, is used to cool mercury [C. h= 1,370 J/kg - °C] flowing at a rate of 1.0 kg/s from 110°C to 70°C. The cooling fluid is water entering the heat exchanger at a temperature of 30°C and flow rate of 0.2 kg/s. The overall heat transfer coefficient of the exchanger is U- 250 W/m2.°C. Water

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Similar questions

Single - shell, two - tube pass heat exchanger with surface area 0.4 m² and overall heat transfer coefficient of 1800 W / m°K; saturated steam at 110° C condenses on one side while water at a flow rate of 0.35 kg / s enters at 17° C. Calculate ( a ) Outlet temperature of the water (b) Rate of condensation of steam . cp ( water ) = 4179 J / kg . K.
Single-shell, two-tube pass heat exchanger with surface area 0.4 m? and overall heat transfer coefficient of 1800 W/m2-K; saturated steam at 110°C condenses on one side while water at a flow rate of 0.35 kg/s enters at 17°C. Calculate (a) Outlet temperature of the water (b) Rate of condensation of steam. cp(water)=4179 J/kg. K. 916 I Thermodynamics TABLE A-4 Saturated water-Temperature table Internal energy, Specific volume, m/kg Enthalpy. KJ/kg Entropy, kJ/kg - K k/kg Sa. Sat Sat. Sat. Sat. Sat. Sat. Sat. liquid, Evap., vapor, Sat. Temp., liquid, liquid, Evap.. liquid, Evap., press. Pst kPa vapor, vapor, vapor, T°C Up he 0.001000 0.001000 0.000 21.019 42.020 2374.9 2374.9 0.001 21.020 42.022 0.0000 9.1556 9.1556 0.0763 0.1511 8.7488 8.8999 0.2245 8.5559 8.7803 0.2965 8.3696 8.6661 0.01 5 10 0.6117 0.8725 1.2281 206.00 147.03 106.32 2360.8 2346.6 2381.8 2388.7 2500.9 2489.1 2477.2 2500.9 2510.1 2519.2 8.9487 9.0249 15 20 0.001000 0.001001 2.3392 0.001002 2332.5 2318.4 2395.5 2402.3…
A countercurrent heat exchanger was designed with an overall heat transfer coefficient of 900 kcal/hr-m-°C. The heat transfer area of a newly designed heat exchanger is 7 m². Over a period of time, its overall heat transfer coefficient has fallen to 450 kcal/hr mt²°C due to fouling. Given: Specific heat of hot fluid = 1 kcal/kg °C Hot fluid entering temperature = 90°C Hot fluid leaving temperature = 65°C Cold fluid entering temperature = 25°C Cold fluid leaving temperature = 40°C Required: How much additional area is to be added to maintain the same rate of heat transfer? Need asap pls
QUESTION 6 En. Karim recently bought a 2-shell passes and 12-tube passes type heat exchanger for his metal factory to reduce the hot oil (cp = 2200 J/kg.K) temperature. The hot oil enters the heat exchanger through the shell passes at 160 °C with a flow rate of 0,2 kg/s. The coolant fluid used to reduce the hot oil temperature is water (cp = 4180 J/kg.K). Water flows through the heat exchanger pipe at 18 °C and at flow rate of 0.1 kg/s. The tube inside the heat exchanger is made of 1.8 cm diameter copper tube and the length is 3 m. If the overall heat transfer coefficient is 340 W/m².K, evaluate and discuss your finding for the following parameters; i. The maximum rate of heat transfer, ii. The actual rate of heat transfer, iii. The outlet temperatures of the water, and iv. The outlet temperatures of the oil.
A shell-and-tube heat exchanger with 2 shell passes and 12 tube passes is used to heat water (cp = 4180 J/kg•K) in the tubes from 20 °C to 70 °C at a rate of 4, 5 kg/sec. Heat is supplied by hot oil (cp = 2300 J/kg•K) entering the shell side at 170 °C at a rate of 10 kg/s. For a total heat transfer coefficient on the tube side of 350 W/m²•K, determine the area of the heat transfer surface on the tube side. Mainly, I also need the solution from concepts of how the heat flow behaves in the system, it can be with a diagram.
QUESTION 9 As in the previous question, a concentric-tube, counter-flow heat exchanger, as shown below, is used to cool mercury [C, h = 1,370 J/kg - "C] flowing at a rate of 1.0 kg/s from 110°C to 70°C. 10 The cooling fluid is water entering the heat exchanger at a temperature of 30°C and flow rate of 0.2 kg/s. The overall heat transfer coefficient of the exchanger is U = 250 w/m² - °C. Water Mercury Calculate the required heat transfer area. O 7.75 m2 O 11.75 m2 O 4.75 m2 O None of these answers O 8.75 m2 Click Save and Submit to save and submit. Click Sare All Answers to save all answers. Save All Answers 人 100% G
A shell and tube heat exchanger is designed as a counter flow type. Water (cp = 4182 J/kg.oC) enters the shell side at 30 oC with a mass flow rate of 12.5 kg/s. A mass flow rate of 19.5 kg/s of engine oil (cp = 1060 J/kg.o C), enters the tube side at 300 oC. Each tube is having an inner diameter of 36 mm and a wall thickness of 2 mm, and a length of 3 m. If the heat exchanger effectiveness is 60 %, calculate the following:1. The heat transfer rate,2. The exit temperature for each fluid,