Find the air flow rate in the duct. Data: Air pressure: 17 psia air temperature at the inlet: 65 F air temperature at the exit: 125 F duct wall temperature 230 F duct cross section is 1.5 ft by 1 ft length of the heated segment is: 8 ft

Find the air flow rate in the duct. Data: Air pressure: 17 psia air temperature at the inlet: 65 F air temperature at the exit: 125 F duct wall temperature 230 F duct cross section is 1.5 ft by 1 ft length of the heated segment is: 8 ft

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter5: Analysis Of Convection Heat Transfer

Section: Chapter Questions

Problem 5.1P: Evaluate the Reynolds number for flow over a tube from the following data: D=6cm,U=1.0m/s,...

See similar textbooks

Related questions

Q: Air at 1 atm and 20 C flows through a smooth pipe. The centerline velocity and the pipe diameter ar...

A: Given data Air Temperature = 20°CAir pressure = 1 atm = 101325 PaCenterline Velocity = VCL = 6 m/sPi...

Q: Setup Torque Indicator Set up the Moment Wheel on the Statics Torque Wheel Board as shown in Figure ...

A: Given that the masses are hanging by the threads and pulleys so there will be gravitaional forces wh...

Q: A pump has a 100 mm diameter suction pipe and a 75 mm discharge pipe. The capacity is 15 L/s of wate...

Q: difference in enthalpies of air between the exit and the inlet of the compressor

A: Given; Air enters a perfectly insulated compressor at a temperature of 310 K. The pressure ratio of ...

Q: A pump has a 100 mm diameter suction pipe and a 75 mm discharge pipe. The capacity is 15 L/s of wate...

Q: A fluid with a specific gravity of 0.75 flows through a horizontal pipe at a velocity of 20 ft per s...

Q: A pump has a 100 mm diameter suction pipe and a 75 mm discharge pipe. The capacity is 15 L/s of wate...

Q: Visualize a substance with the following points on the phase diagram: a triple point at 0.05 atm and...

A: Tripple triple point is the temperature and pressure at which solid, liquid, and vapor phases of a p...

Q: A grinding ratio of 200 implies that the

A: Given: A grinding ratio 200 implies that the:Where, Grinding wheel refers to the tenacity of hard...

Q: 9. For a given material, the modulus of elasticity is 15,000,000 psi in tension and 6,000,000 psi in...

A: Given Data E=15000000 psi G=6000000 psi

Q: certain force F has a moment of 180 N-m clockwise about point O and 90 N-m counterclockwise about po...

A: Given Data Mo= 180 N-m clockwise MB=90 N-m counterclockwise

Q: NEED WITHIN 1HR PLEASE, THANKS 1. A 1200-kg automobile is moving at a speed of 90 km/h when the brak...

A: Given Data: Mass of the automobile, m=2100 kg Velocity, V1=90 km/h

Q: insulator has a thermal conductivity of 20 W/m ºC s used to separate two heat sinks whose temperatur...

Q: A person is pushing on a uniform block of wood as shown in the figure and parameter table. The block...

A: Given: mass of the wood=140Kg coefficient of static friction of wood(μw)=0.25 so the weight of the w...

Q: Steam at 6.2 MPa and 480 deg. C is received by a regenerative engine with ideal conditions and in an...

Q: surface condenser serving a 50,000-kW steam turbo-generator unit receives exhaust steam at the rate ...

A: Fgfhu

Q: 152.4 mm, Schedule 40 pipe line 91.4 m long conveys 3028 l/min of cold water from a pump to a point ...

A: The frictional head loss in a pipe due to fluid flow can be calculated using the formula given below...

Q: C3/(c) the moment about point A is: * 300 cm A 200 N 45°

A: Moment about point A is 424.2 N-m.

Q: The 55kg crate shown in the figure rests on a horizontal surface for which the coefficient of kineti...

A: Draw the diagram of the crate.

Q: Determine the allowable value of force P (in Newton ), if a bar of diameter d = 32 mm and length L =...

A: Given: Bar diameter, d = 32 mm Length, L = 0.60 m = 600 mm Modulus of Elasticity, E = 44 GPa = 44×1...

Q: The continuous cable that wraps around the small pulleys at A, B, C, and D has a length of 8m. The s...

Q: The steel bars AC and BC, each of cross-sectional area 120 mm^2, are joined at C with a pin. Determi...

Q: The mechanism shown below is used to lower and raise a solar panel mounted on a roof. The purpose is...

Q: Forty five kg of water is placed in an enclosed volume of 5 m3 and heat is added until the temperatu...

A: Givenm=45kgV=5m3Final temperature T=190oC

Q: 4. Figure P-130 shows a roof truss and the detail of the riveted connection at joint B. Using allowa...

Q: A pump has a 100 mm diameter suction pipe and a 75 mm discharge pipe. The capacity is 15 L/s of wate...

Q: If the forces in a system were drawn graphically on scale, which among the force systems is in equil...

A: If the forces in the system were drawn graphically on scale then the force system of B and E are in ...

Q: The following data are obtained from a tensile test of a copper specimen. - The load at the yield po...

A: Dear student, we are suppose to solve only 3 sub parts. Please post other parts as a separate questi...

Q: What is the maximum strength, in g/d, of a Cotton fiber when fully loaded with water vapor?

A: from the fiber strength property table we get, the wet strength of cotton is 30 - 54 (g/tex or g/d)

Q: How is the process of refrigeration explained in terms of the First Law of Thermodynamics

Q: Air enters a device at 7 MPa and 420°C with a velocity of 220 m/s. The inlet area is 70 cm? and the ...

A: It is a kind of turbine as the area increases from inlet to exit. a turbine is a device in which wor...

Q: A 10-ft boom is acted upon by the 840-lb force shown. Determine the tension in each cable and the re...

Q: A 1.5-in-diameter bar has been machined from an AISI 1050 cold-drawn bar. This part is to withstand ...

Q: A pipe equipped with a nozzle is used to deliver water to the wheel of a hy draulic turbine. The pip...

A: Given: Diameter of the nozzle→d=10 Cm=0.10 m so the area of the nozzle→a=π4d2=π40.12=0.0078 m2 veloc...

Q: A block of wood is 15 cm square and 30 cm long. (a) What is the specific gravity of the wood if the ...

Q: A certain force F is applied at D. OABC bar is made of a brittle material with 210 MPa ultimate tens...

Q: magnitude of work

A: Given; Mass of air, m=1 kgInitially at temperature, t=1270C=127+273=400 KIt expands reversibily at c...

Q: Steam flows isentropically through a nozzle from 1500 kPa, 300oC to 950 kPa. For 454 g/s of steam, d...

Q: Each of the four jet engines on an Airbus A380 airliner develops a thrust (a forward force on the ai...

Q: An oil having a specific gravity of 0.87 is being pumped from a lower reservoir whose water surface ...

Q: Find the couple-force system at A. Semiparabolic region 8 kN/m A B 3 m 2 m

Q: Q7. The series of states through which a --- system passes during a process is called 561 process O ...

Q: Determine the following i) Diameter of the specimen, i) Final length of the specimen, iii) Stress un...

Q: Find the value of Pmax if the the

A: need to find Pmax

Q: A Styrofoam cylinder, filled with water, sits on a table. It has a small hole, B cm below the top of...

Q: Q8. heat dissipation rate density of 9 mW/mm2 equals to

A: Heat dissipation rate, q˙=9 mW/mm2

Q: The steel pipe AB has a 102-mm outer diameter and a 6-mm wall thickness. Knowing that arm CD is rigi...

Q: A flat steel bar, 30 mm wide by 2 mm thick and 1.6 m long, is bent by couples applied at the ends so...

Q: Calcualte force applied

A: Given: Workdone is defined force in the direction of the displacement. i.e, W= F×DDisplacement is ...

Q: 50 MPa 90 MPa 35 MPа 60 90 MPa 50 MPa 30

Question

Find the air flow rate in the duct.

Data:

Air pressure: 17 psia
air temperature at the inlet: 65 F
air temperature at the exit: 125 F
duct wall temperature 230 F
duct cross section is 1.5 ft by 1 ft
length of the heated segment is: 8 ft

Expert Solution

This question has been solved!

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

SEE SOLUTION Check out a sample Q&A here

Step 1: INTRODUCTION

VIEW

Step 2: TO CALCULATE THE AIR FLOW RATE FROM THE DUCT

VIEW

Step by step

Solved in 2 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

Evaluate the Reynolds number for flow over a tube from the following data: D=6cm,U=1.0m/s, =300kg/m3,=0.04Ns/m2.
value of reynold number for fluid flow in pipe and flow is laminar?
A duct system layout is shown in the figure below, it is supplied with air from a central air conditioning unit. The ducts require to be rectangular with a maximum height of 10in due to ceiling limitations. Maximum air duct velocities are: main = 1200fpm; branches = 800 fpm. Determine the sizes of the rectangular ducts and the static pressure at the AHU. Use Velocity reduction method. AHU- AIR HANDLING UNIT (CENTRAL AIRCON)
Industrial pipes Do the guides allow movement of a pipe only in two directions (in a plane)?
the tube length is 1m.
A helix is made of 2-in schedule 40 pipe turned up to 21 giving a diameter of 1.5625 m. The liquid is entering through the coil at a temperature of 45 oC and leaving at 35oC. The average wall tube temperature is given to be 35oC. The volumetric flowrate of 2-propanol entering is .00279 m3 /s. Calculate the frictional pressure drop in a straight pipe and the pressure drop in coil. (Use equation 6-37 of Perry’s Handbook (9th edition) to calculate for fanning friction facto
Air flowing through a 500 mm diameter duct the U-tube static pressure reading is 5 mm H2O W.G. and total pressure is 9 mm H2O W.G. What is the air flow velocity?
PROBLEM Ħ 22.a. mass at a pressure the temperature of hot water is being 248.09 °F to 212.09 °F using a heat exchanger. = 2at m and flow rate = 1020 kg /min, decreased from oF using Reservvir waten s used as coolant with mass flow rate = 1800 kalmin and kg Imin inlet temperature = 50.09 oF. 2 The minimun allow able ft? surface are a= 270. 17 of heat ex changer all ow able overall heat = 206.05 btul The transfer coefficient of heat exchanger maximem do z7f4 The heat capací ty to be used must he the average value of inlet and out let temperatures. Hind the Number of Transfer units (NTU) using effective nes NTU Method if the heat exch anger being used is heat exchang er (specify which fluid is mixed or unmixed Cross flow
long. The inlet water temperature is 10 C, and the tube wall temperature is 15 C water temperature. k 0.585, Pr= 9.4, u= 1.31x10*,p= 992kg/m, CP= 4195 j/kg. higher than the water temperature all along the length of the tube. What is the exit %3D Q5//answer one of the following branches e jall al je yal A) cast iron pipe (k=75w/m. °C) air flows inside this pipe at 300°C the inner diameter is 0.06 m, the outer diameter 7cm,it is covered with insulation type glass wool with thick 4cm. with k= 0.055w/m.°C .the ambient temperature 6 °C by free V3. convection with heat transfer coefficient (20w/m2. °C) the heat transfer inside the pipe is 65 w/m?. °C. length of tube (L-2) determine 1-the heat lost from the hot air 2-the temperature drop across the pipe shell 3-the temperature drop across the insulation. 344 14. 1256 and B) Fill the blanks: of the 1. The thermal resistance of a medium depends on medium. 2 All law. pes of convection are governed by 10000, the flow is
Find the loss in total pressure for each run in the simple duct system of Fig. 1, using the equal-friction method and in English unit. The total pressure available for the duct system is 0.12 in. wg (30 Pa), and the loss in total pressure for each diffuser at the specified flow rate is 0.02 in. wg (5 Pa). Duct fittings are listed in Table 1. Assume the duct dimeter in run 1 is 10 in. and the rest are 8 in. Does the duct system require any adjustment? 150 cfm e. a 15 ft Plenum е 15 ft 5 ft 5 ft a 3. 20 ft 4 10 ft 200 cfm e 10 ft 150 cfm b Duct Fittings for Figure 1 Fittings Type Abrupt Entrance 90 deg Elbow, Pleated Round to Rectangular boot, Straight 45 deg. Converging Wye 45 deg Elbow, Pleated a d e
Water in a constant diameter pipe is at 15m on the inlet the pipe leads to the tank situated at a height of 10m, if the total head losses are 8m and the pip inlet and outlet are exposed to the environment and the mass flow remains constant; Chose one of the following: A. no pump is required to ensure water flows to the tank B. none of the above C. a pump needs to ensure water flows to the tank D. the water will flow through gravity to the tank
Problem -1 A tank is initially empty. A liquid with p = 62.4 Ibm/ft is poured into the tank at a constant mass flow rate of mi = 7 lbm/s. The tank has cross-sectional area A = 0.2 fe, and the fluid in the tank has a %3D variable height H(t). There is a hole at the bottom of the tank. The fluid flows out of the tank at a rate proportional to the fluid height: rme = kH, where k= 1.4 lbm/ft/s. Find H(t). A sketch is given in Fig. P.1. Figure.P.1: Sketch of tank filling problem