! 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. Hot water C Th, in Cold water 20°C Determine the effectiveness of the heat exchanger. The effectiveness of the heat exchanger is

! 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. Hot water C Th, in Cold water 20°C Determine the effectiveness of the heat exchanger. The effectiveness of the heat exchanger is

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

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A body is desired to be heated with hot water and oil on the body side in a heat exchanger with 20 pipe passes. The inner and outer diameters of the copper pipe are 20 and 24 mm, respectively. Water with a flow rate of 0.2 kg / s enters the pipe at 87 ° C and leaves at 43 ° C. The inlet and outlet temperatures of the oil in the heat exchanger are 7 ° C and 37 ° C, respectively. Average heat transfer coefficient on the outer surface of the pipes is 800 W / m ° K. The fouling resistances on both sides are negligible.Determine;a) Heat transfer b) External surface based total heat transfer coefficient, c) Determine the pipe length in one pass.
QUESTION 10 Consider a water-to-water counter-flow heat ex-changer with these specifications. Hot water enters at 95 °C while cold water enters at 20 °C. The exit temperature of hot water is 15 °C greater than that of cold water, and the mass flow rate of hot water is 50 percent greater than that of cold water. The product of heat transfer surface area and the overall heat transfer coefficient is 1400 W/m².ºC. Taking the specific heat of both cold and hot water to be Cp = 4180 J/kg.ºC, determine i. the outlet temperature of the cold water, ii. the effective-ness of the heat exchanger, iii. the mass flow rate of the cold water, and iv. the heat transfer rate.
A Counter-flow heat exchanger (water-to-water) with these specifications. Hot water enters at 95 °C while cold water enters at 20 °C. The exit temperature of hot water is 15 °C greater than that of cold water, and the mass flow rate of hot water is 50 percent greater than that of cold water. The product of heat transfer surface area and the overall heat transfer coefficient is 1400 W/K. Taking the specific heat of both cold and hot water to be Cp = 4180 J/kg K, Calculate: (a) The outlet temperature of the cold water, (b) LMTD (c) The effectiveness of the heat exchanger, (d) The mass flow rate of the cold water, (e) The heat transfer rate.
A stream of ammonia is cooled from 100oC to 20oC at a rate of 180 kg/hr in the tube side of a double-pipe counter-flow heat exchanger. Water enters the heat exchanger at 10oC at a rate of 250 kg/hr. The outside diameter of the inner tube is 3 cm and the length of the pipe is 7m. Using the log-mean temperature difference, calculate the overall heat transfer coefficient (U) for the heat exchanger. Determine the log-mean temperature difference. Determine the heat transfer coefficient for the heat exchanger. Cp for ammonia is 5234J/kgK and cp for water is 4180J/kgK.
2. In a counterflow double-pipe heat exchanger, the hot fluid enters at 149°C and exits at 76°C. The cold fluid enters at 33°C and exits at 87°C. What is the heat exchanger effectiveness? Express your answer as a decimal value.
How does a heat exchanger work? Where and when will you use a heat exchanger?
What is the heat source? Write briefly. What should be the characteristics of the heat sources used in heat pumps? Write.
Please answer all parts or leave for someone else to answer i will give you a very positive feedback.
Hot water (Cp= 4.188 kJ/kg.K) with mass flow rate of 2.5 kg/s at 100 C enters a thin-walled concentric tube counterflow heat exchanger with a surface area of 23 m, and an overall heat transfer coefficient of 1000 W/m^2K. Cold water (Cp= 4.178 kJ/kg.K) with mass flow rate of 5 kg/s enters the heat exchanger at 20 C. After a period of operation, the overall heat transfer coefficient is reduced to 500 W/m^2K determine the fouling factor that caused the reduction in the overall heat transfer coefficient.
need all part answers
In a double-pipe, counter-flow heat exchanger, water entering at 1 kg/s is heated from 23°C to 69°C as it flows thru the inner pipe. Hot oil enters the heat exchanger at 2 kg/s and 110°C. The convection heat transfer coefficients in the cold- and hot-sides are 100 and 50 kW/m2∙°C, respectively. Calculate the required heat transfer area in m2. Take cp = 4.18 kJ/kg∙°C for water, and cp = 1.67 kJ/kg∙°C for oil. Round your answer to 2 decimal places.