(For numbers 4 to 10) A double-pipe heat exchanger (counterflow operation) having an area of 100 m' is used to heat 5 kg/s of water that entersthe heat exchanger at 50 °C. The heating fluid is oil having a specific heat of 2.1 kJ/kg.°C and a flow rate of 8 kg/s. The oil enters the exchangerat 100 °C and the overall heat-transfer coefficient is 120 W/m2 C.4. Which fluid has the Cmar?a. Waterb. Dilc. Both are equald. Can't be determined5. What is the value of the Coin?a. 8.786b. 16.80C.20.92d. 40.006. What is the heat exchanger effectiveness?a. 0.3486b. 0.3778C.0.3959d. 0.43417. What is the rate of heat transfer?a. 292.80 kWb. 317.37 kWC. 332.52 kWd. 364.56 kW

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Answered: (For numbers 4 to 10) A double-pipe…

Introduction to Chemical Engineering Thermodynamics

8th Edition

ISBN:9781259696527

Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart

Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart

Chapter1: Introduction

Section: Chapter Questions

Problem 1.1P

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6. A fermentation medium is cooled in a double pipe heat exchanger from 371.9 K to 349.7 K. The medium flows inside the inner tube and the cooling water at 288.6 K enters the annular space and flows outside the tube at 319.1 K. Calculate the heat transfer area if the heat transfer rate is 5.14 kJ/s and the overall heat transfer coefficient is 340 W/m ²K. b. For co-current flow of streams < +10
3H2(g)+N2rg)E>2NH3(g) +tHeart (十 owhat is the Keqif the coscentratiors atequilion'um are [H2] =lo0l M:[Nz]= 0.250 M and CNH3]=1.50M? o How many gramsofnitrogen gas are needecd to produce 5.0L of amomonia at STP?う

Question is from the class of Heat Transfer please show all steps, Thank you.
Problem 4. In order not to damage the resistance in the kettles, the difference between the temperature of the heater and the fluid should not exceed 25 °C. If the heat transfer area between the fluid and the heater is 78.5 cm² and the heat transfer coefficient is 400 W/m².K, find the maximum allowable power of the heater in order to boil water?
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.
1. A plastic (k = 0.5 W/m K) pipe carries a coolant at -35 °C with a heat-transfer coefficient of 300 W/m².K. The pipe ID is 3 cm and the OD is 4 cm. The exterior pipe surface is exposed to air at 25°C with a heat-transfer coefficient of 20 W/m²K. Radiative heat transfer may be neglected in this problem. (a) Calculate the rate of heat transfer to the coolant per meter of pipe length. (b) Calculate the temperature of the exterior pipe surface.
À wall of area 30 m² having a density of 1500 kg/m', thermal conductivity 30 W/m.K, and specific heat capacity 4 kJ/kg.K. The temperature distribution across a wall 0.5 m thick at a certain instant of time is given as T(x) = 30-5 x-7x The wall is generating a uniform heat (q.) of 1000 W. (1) Find the rate of heat transfer entering and leaving the wall (in W). (2) Find rate of energy stored in Watt. (3) Find (dFT/dx²) (4) Derive the change in temperature with respect to time equation (time rate of temperature change)- remember to substitute the value of (d T/dx²) from (part 3) and values of all other properties into final equation. %3D
Transport Phenomena Question
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 heat transfer rate between the two fluids. Determine the outlet temperature of the water. Determine the heat transfer surface area. 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.
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 heat transfer rate between the two fluids. Determine the outlet temperature of the water. Determine the heat transfer surface area. 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.

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