3-) A heat exchanger with 1 body - 4 pipe passages and each pipe (100+ ??)...

3-) A heat exchanger with 1 body - 4 pipe passages and each pipe (100+ ??) (with a diameter of 2.6 cm each, 4 m long thin wall per pass) will be used to heat the air. Water enters the pipes with a mass flow of 8 kg / s at 350 K temperature, and air enters the body at a temperature of 15 C with a mass flow of 18 kg / s. The pollution factor of the sediment formed inside the pipe over time is 0.0026 m'K / W. Transport coefficients on the inner and outer surfaces of the pipes are estimated at 450 and 200 W / m'K, respectively. Using specific temperatures at 25 ° C for air and water (?? = school no. Last two digits, for example 0611002072; ?? = 72, ie 172 units), a-) the efficiency of the heat exchanger by drawing the shape of the problem, b-) Heat transfer rate ( kW), c-) Calculate the outlet temperatures (C) of the water and air and show the temperatures in the T_L diagram.

28 will be written instead of a question mark

Expert Solution

samet mamat answered 17 hours ago

A heat exchanger with 1 body - 4 pipe passages and 109 pipes (2.6 cm diameter...

A heat exchanger with 1 body - 4 pipe passages and 109 pipes (2.6 cm diameter each, 4 m long thin wall per passage) at each passage will be used to heat the air. The water enters the pipes with a mass flow of 8 kg / h at 350 K temperature and the air enters the body with a mass flow of 18 kg / h at a temperature of 15 C. The pollution factor of the sediment formed...

A heat exchanger with one body and eight pipe passes is designed. Water flows from the...

A heat exchanger with one body and eight pipe passes is designed. Water flows from the exhaust gas pipes as cold fluid by the body as cold fluid. Exhaust gas to the system at 210 ° C and entering at a temperature of 140 ° C The heat transfer coefficient is 392 W / m2K. On the other hand, water enters 16 iron (k = 38 W / mK) pipes with an inner diameter and outer diameter of 32 mm...

In a pipe heat exchanger, crude oil on 30 ℃ is used to cool the heavy...

In a pipe heat exchanger, crude oil on 30 ℃ is used to cool the heavy oil from 180℃ to 120℃.Mass flow of heavy oil is Wh=104kg / h，and crude oil respectively Wc=1.3×104kg/h. Specific heat, respectively is Cph=2.2 kJ/(kg•℃), Cpc=1.9 kJ/(kg•℃). Overall heat transfer coefficient K=120W/(m2•K). Try to calculate the required heat transfer area for parallel flow and countercurrent flow.

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...

A 10 ft long double pipe heat exchanger consisting of a 1 in sch 40 (1.315...

A 10 ft long double pipe heat exchanger consisting of a 1 in sch 40 (1.315 in OD, 1.029 in ID) inner pipe within a 4 in sch 40 (3.998 in ID) outer pipe uses chilled water to cool hot glycerin (the water flows in the annulus and glycerin in the inner pipe). The pipes are constructed of AISI 302 stainless steel. The mean velocities of the water and glycerin are 4 ft/s and 1.3 ft/s, respectively. If the average...

Tomato soup is flowing through a double-pipe heat exchanger (3 cm ID, 4.2 cm OD), with...

Tomato soup is flowing through a double-pipe heat exchanger (3 cm ID, 4.2 cm OD), with saturated steam at 112°C on the outside of the pipe. The convective heat transfer coefficient between the soup to the pipe is 323 W/m2 K and the convective heat transfer coefficient between the steam to the pipe is very large. The thermal conductivity of the soup and pipe are 0.89 W/m K and 15.6 W/m K, respectively. 1. For this system: A. The overall...

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...

A double pipe heat exchanger is to be designed to cool 5 gal/min of hot oil...

A double pipe heat exchanger is to be designed to cool 5 gal/min of hot oil from 250°F to 120°F using 10 gal/min of cooling water available at 70°F. The heat exchanger is to consist of sections of 0.75 inch 16 BWG copper tubing inside 1.5 inch 16 BWG tubing; the water flows in the annular space. The shell-side heat transfer coefficient for this system is known to be 737 Btu/hr×ft2×°F. a) Estimate the required length of the countercurrent exchanger,...

A double-pipe heat exchanger is designed as an engine oil cooler. The flow rate of oil...

A double-pipe heat exchanger is designed as an engine oil cooler. The flow rate of oil is 5 kg/s, and it will be cooled from 60°C to 40°C through annulus (ID = 0.10226 m, OD = 0.1143 m). Sea water flows through the tubes (ID = 0.02664 m, OD = 0.03340 m) and is heated from 10°C to 30°C. The number of bare tubes in the annulus is 3, and the length of the hairpin is 3 m. Assume that...

For the double-pipe heat exchanger of Problem 3.10, calculate the outlet temperatures of the two streams...

For the double-pipe heat exchanger of Problem 3.10, calculate the outlet temperatures of the two streams when the unit is first placed in service. Q:3.10 A hydrocarbon stream is to be cooled from 200◦F to 130◦F using 10,800 lb/h of water with a range of 75–125◦F. A double-pipe heat exchanger comprised of 25 ft long carbon steel hairpins will be used. The inner and outer pipes are 1.5- and 3.5-in. schedule 40, respectively. The hydrocarbon will flow through the inner...

Question