Which one of the following statements are correct? In a counter-flow heat exchanger, the exit temperature...

Which one of the following statements are correct?

In a counter-flow heat exchanger, the exit temperature of the cold fluid can never reach the exit temperature of the hot fluid.

In a parallel flow heat exchanger the exit temperature of the cold fluid is always greater than the exit temperature of the hot fluid.

In a counter flow heat exchanger the exit temperature of the cold fluid is always greater than the exit temperature of the hot fluid.

In a parallel flow heat exchanger the exit temperature of the cold fluid can never reach the exit temperature of the hot fluid.

Expert Solution

samet mamat answered 2 years ago

A counter-flow double-pipe heat exchanger is to heat water from 20ºC to 80ºC at a rate...

A counter-flow double-pipe heat exchanger is to heat water from 20ºC to 80ºC at a rate of 1.2 kg/s. The heating is to be accomplished by geothermal water available at 160ºC 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 640 W/(m2.ºC), determine the length of the heat exchanger required to achieve the desired heating using the effectiveness-NTU...

HEAT TRANSFER: HEAT EXCHANGER Oil flows in a heat exchanger with a mass flow rate of...

HEAT TRANSFER: HEAT EXCHANGER Oil flows in a heat exchanger with a mass flow rate of 20 kg/s and is to be cooled from 175 to 65°C with water as a coolant flowing at a rate of 30 kg/s and an inlet temperature of 12°C. The overall heat transfer coefficient is U = 1250 W/m2⋅K. a) Sketch the temperature profile and calculate the mean temperature for parallel flow, counter flow, and cross flow heat exchangers.. b) Determine the area required...

LMTD of a cross-flow heat exchanger is

A counter-flow double-pipe heat exchanger is heating water from 20 to 80 C at a rate...

A counter-flow double-pipe heat exchanger is heating water from 20 to 80 C at a rate of 1.2 kg/s. The heating is provided by water at 160 C and a rate of 2 kg/s. The inner tube has a diameter of 1.5 cm, and the U is 640 W/m2 K. Use the effectiveness-NTU method to determine the length of the heat exchanger required.

define heat exchanger mechanical flow switch

Which one of the following statements is correct?

Which one of the following statements is correct? A. Ending Cash Balance on the Cash Budget is an input to the SG&A Budget. B. Ending Cash Balance on the Cash Budget is an input to the Forecasted Income Statement. C. Ending Cash Balance on the Cash Budget is an input to the Sales Budget. D. None of the above statements are correct.

A double-pipe heat exchanger operating in counter current mode is to heat a fluid(Cp 1.7 kJ/kg...

A double-pipe heat exchanger operating in counter current mode is to heat a fluid(Cp 1.7 kJ/kg K) from 50°C to 95°C at a rate of 4.5 kg/s. The heating is to be accomplished by hot fluid (Cp=1.97 kJ/kg K) available at 200°C at a mass flow rate of 6 kg/s. The inner tube is thin-walled and has a diameter of 4 cm. If the overall heat transfer coefficient of the heat exchanger is 680 W/m2 °C, determine the length of...

Which one of the following statements is correct concerning these loans?

First Bank offers personal loans at 7.6 percent compounded monthly. Second Bank offers similar loans at 7.75 percent compounded semi-annually. Which one of the following statements is correct concerning these loans?Group of answer choicesThe First Bank loan has an effective rate of 7.67 percent.The Second Bank loan has an effective rate of 8.03 percent.The annual percentage rate for the Second Bank loans is 7.90 percent.Borrowers should prefer the loans offered by Second Bank.The First Bank offers the best deal on...

47. Which of the following statements are correct? Select which option is correct. Select one or...

47. Which of the following statements are correct? Select which option is correct. Select one or more: The level of professional skepticism can be reduced where the auditor has past experience with the entity indicating the honesty and integrity of management. The level of professional skepticism needs to be maintained throughout the whole engagement. Professional skepticism implies an expectation of fraud or error, so is a biased viewpoint. Professional skepticism is not important in considering management's explanations for unusual trends...

Subject: Heat exchanger Lab Question: 1.1) in heat exchanger analysis, the following quantities are used. Explain...

Subject: Heat exchanger Lab Question: 1.1) in heat exchanger analysis, the following quantities are used. Explain what each means and give a formula for each. Assume the mass flow rates, fluid properties, inlet, temperatures, and length and diameters of the heat exchanger are known. a) Overall heat transfer coefficient. UA. b) A number of transfer units, NTU. c) Effectiveness, e 1.2) what is the hydraulic diameter and why is it useful for double-pipe heat exchanger analysis?

Question