A counter-flow double-pipe heat exchanger is to heat water from 20°C to 80°C at a rate of 1.2 kg/s. The heating is to be accomplished by geothermal water available at 160°C at a mass flow rate of 2 kg / s. The inner tube is thin- walled and has a diameter of 1.5 cm. If the overall heat transfer coefficient of the heat exchanger is 640W/m².K, determine the length of the heat exchanger required to achieve the desired heating.

A counter-flow double-pipe heat exchanger is to heat water from 20°C to 80°C at a rate of 1.2 kg/s. The heating is to be accomplished by geothermal water available at 160°C at a mass flow rate of 2 kg / s. The inner tube is thin- walled and has a diameter of 1.5 cm. If the overall heat transfer coefficient of the heat exchanger is 640W/m².K, determine the length of the heat exchanger required to achieve the desired heating.

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

Related questions

Q: Hot water (Cp= 4.188 kJ/kg.K) with mass flow rate of 2.5 kg/s at 100 C enters a thin-walled…

A: specific heat of hot waterCph=4.188kJ/kg-Kmass flow rate of hot waterm˙h=2.5kg/sInlet temperature of…

Q: erall heat transfer coefficient of the h

A: given:specific heat of water 4.18kj/kgkspecific heat of geothermal fluid=4.31kj/kgkmass flow of…

Q: A two shell, eight tube pass STHE is to heat mineral oil from -5°C to 40°C using water with an inlet…

A: According to the data number if the sell = n = 2 Number of the tube nt = 8 total tubes N=8x2 =16…

Q: Solve using NTU method. Consider a liquid (Cp = 2.2 kJ /kg·K) is cooled at a rate of 12 kg/min from…

Q: A counterflow double-tube heat exchanger with hot engine oil fluid at inlet and outlet temperatures…

Q: Hot water at 90°C flows on the inside of a 2.5-cm-ID steel tube with 0.8-mm wall thickness at a…

Q: and 2.5cm in diameter, determine (a) the rate of heat transfer and (b) the outlet temperatures of…

A: To calculate the rate of heat transfer, and outlet temperature of the glycerine and glycolgiven the…

Q: Consider a closed loop heat exchanger that carries exit water (cp = 1 Btu/lbm·°F and r = 62.4…

A: It is given that both the fluids are water, but steam is condensing in the pipe. Thus, the given…

Q: Example 2 A shell-and-tube exchanger (two shells, four tube passes) is used to heat 10,000 kg/h of…

Q: 1. A two shell, eight tube pass STHE is to heat mineral oil from -5°C to 40°C using water with an…

Q: The following represents a parallel heat exchanger which contains 130 tubes each with a diameter of…

Q: A heat exchanger is heating water on the tube side with steam condensing on the shell side. The…

Q: determine the length of the tube required to achieve the desired heating.

A: To calculate the length of the tube required for heatinggiven datafor hot waterthe value of specific…

Q: Required information Consider a water-to-water counterflow heat exchanger with these specifications.…

Q: Hot oil, which enter a cross-flow heat exchanger at 200 C and leave at 100 C, are used to heat water…

A: Given data: The inlet temperature of the hot oil, Th,1 =200 C The outlet temperature of the hot oil,…

Q: t is desired to heat 230 kg / h of water from 36 to 94 ºC with oil (Cp = 2.1 kJ / kg ºC) that has an…

A: GIVEN DATA HOT FLUID- OIL MASS FLOW RATE m=230kg/h INLET TEMPRATURE Th1=175'C COLD FLUID - WATER…

Q: A stream of ammonia is cooled from 100oC to 20oC at a rate of 180 kg/hr in the tube side of a…

A: The inlet temperature of ammonia is .The exit temperature of ammonia is .The flow rate of ammonia is…

Concept explainers

Heat Exchangers

Heat exchangers are the types of equipment that are primarily employed to transfer the thermal energy from one fluid to another, provided that one of the fluids should be at a higher thermal energy content than the other fluid.

Heat Exchanger

The heat exchanger is a combination of two words ''Heat'' and ''Exchanger''. It is a mechanical device that is used to exchange heat energy between two fluids.

Question

A counter-flow double-pipe heat exchanger is
to heat water from 20°C to 80°C at a rate of 1.2
kg/s. The heating is to be accomplished by
geothermal water available at 160°C at a mass
flow rate of 2 kg / s. The inner tube is thin-
walled and has a diameter of 1.5 cm. If the
overall heat transfer coefficient of the heat
exchanger is 640W/m².K, determine the
length of the heat exchanger required to
achieve the desired heating.

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1: Given Data

VIEW

Step 2: Length of the heat exchanger to achieve the desired heating

VIEW

Solution

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 3 steps with 1 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.

Similar questions

based on a double-pipe counter flow heat exchanger to be used to cool oil that enters the heat exchanger at 300°F to 105°F at a rate of 5 lbm/s by water that enters at 70°F at a rate of 3 Ibm/s. The diameter of the tube is 1 in. and the length is 20 ft. The measured overall heat transfer coefficient of this heat exchanger is 2.14 Btu/s-ft2-°F. [Oil, c, = 0.525 Btu/lbm°F, Water, c, = 1.0 %3D Btu/lbm°F] The logarithmic mean temperature difference in °C is 46.1 cannot be determined 35.0 59.4
Please explain with steps.
A thin-walled double-pipe heat exchanger is to be used to cool oil (cp= 2500 J/kg-K) from 80°C to 50°C at a rate of 5 kg/s by water (cp= 4200 J/kg.K) that enters at 20°C at a rate of 2 kg/s. The diameter and length of the tube considered for the heat exchanger is 2.5 cm and 2 meters. The convective heat transfer coefficients for the oil and water are assumed to be ho = 400- and W m²c W hw = 600 , respectively. m²c' a. Determine if a parallel or counter flow heat exchanger should be used in this case (tell reason and show calculation) b. Using LMTD method, determine the number of pipes required for the heat exchanger
A long, thin-walled double-pipe heat exchanger with tube and shell diameters of 0.01 m and 0.025 m, respectively, is used to condense refrigerant-134a with water at 20°C. The refrigerant flows through the tube, with a convection heat transfer coefficient of hi= 4100 W/m² °C. Water flows through the shell at a rate of 0.3 kg/s. The thermal resistance of the inner tube is negligible since the tube material is highly conductive and its thickness is negligible. Both the water and refrigerant-134a flows are fully developed. Properties of the water and refrigerant-134a are constant. Water properties: p = 998 kg/m³, v=u/p-1.004x 10-6 m²/s, k = 0.598 W/m. °C, Pr = 7.01 Cold water D Do