Engineering Fundamentals: An Introduction to Engineering (MindTap Course List)
5th Edition
ISBN: 9781305084766
Author: Saeed Moaveni
Publisher: Cengage Learning
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Chapter 11, Problem 44P
To determine
Find the heat-transfer rate through the door.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
Calculate the total heat loss from a house measures L×w in plan. The height of walls is H. The house has front and bake external doors, the area of each door is A1m2, and four glass windows with total area of A2m2 the U-value of building elements as the following:
Assume the specific heat capacity of air is CpJ/m3I and the air is changed once per hour. The design internal temperature is T1°C and external temperature is T2°C. Assume the value of N as 0.6. Where
Qf =Σ (U×A×ΔT) watt
Qv= (Cv×N×V×ΔT)÷3600 watt
Air enters a diffuser operating at steady state at 540°R, 15 lbf/in.², with a velocity of 600 ft/s, and exits with a velocity of 60 ft/s. The
ratio of the exit area to the inlet area is 8.
Assuming the ideal gas model for the air and ignoring heat transfer, determine the temperature, in °R, and pressure, in lbf/in.², at the
exit.
100°? air flows through a round aluminum tube of ID 60mm and OD 80mm at 4 ?? .The tube is covered in 5mm thick fiberglass insulation. The tube is surrounded by RT air flowing at 5?? over the outside of the insulation. What is the heat rate through the wall of the tube? Assume that the air temperature is constant throughout the tube.
Note: RT is 25 celsius
Chapter 11 Solutions
Engineering Fundamentals: An Introduction to Engineering (MindTap Course List)
Ch. 11.2 - Prob. 1BYGCh. 11.2 - Prob. 2BYGCh. 11.2 - Prob. 3BYGCh. 11.2 - Prob. 4BYGCh. 11.2 - Prob. 5BYGCh. 11.2 - Prob. BYGVCh. 11.4 - Prob. 1BYGCh. 11.4 - Prob. 2BYGCh. 11.4 - Prob. 3BYGCh. 11.4 - Prob. 4BYG
Ch. 11.4 - Prob. BYGVCh. 11.6 - Prob. 1BYGCh. 11.6 - Prob. 2BYGCh. 11.6 - Prob. 3BYGCh. 11.6 - Prob. 4BYGCh. 11.6 - Prob. BYGVCh. 11 - Prob. 1PCh. 11 - Prob. 2PCh. 11 - Alcohol thermometers can measure temperatures in...Ch. 11 - Prob. 4PCh. 11 - Prob. 5PCh. 11 - Prob. 6PCh. 11 - Prob. 7PCh. 11 - Prob. 8PCh. 11 - Calculate the R-value for the following materials:...Ch. 11 - Calculate the thermal resistance due to convection...Ch. 11 - Prob. 11PCh. 11 - Prob. 12PCh. 11 - Prob. 13PCh. 11 - Estimate the change in the length of a power...Ch. 11 - Calculate the change in 5 m long copper wire when...Ch. 11 - Prob. 16PCh. 11 - Prob. 17PCh. 11 - Prob. 19PCh. 11 - Prob. 20PCh. 11 - Prob. 23PCh. 11 - Prob. 24PCh. 11 - Prob. 26PCh. 11 - Prob. 27PCh. 11 - Prob. 28PCh. 11 - Prob. 29PCh. 11 - Prob. 30PCh. 11 - Prob. 31PCh. 11 - Prob. 32PCh. 11 - Prob. 33PCh. 11 - Prob. 34PCh. 11 - Prob. 35PCh. 11 - For Problems 11.11, 11.12, and 11.13, calculate...Ch. 11 - Prob. 37PCh. 11 - Prob. 38PCh. 11 - Prob. 39PCh. 11 - Prob. 40PCh. 11 - Prob. 41PCh. 11 - Prob. 42PCh. 11 - Prob. 43PCh. 11 - Prob. 44PCh. 11 - Prob. 45PCh. 11 - Prob. 46PCh. 11 - Prob. 47PCh. 11 - Prob. 48PCh. 11 - Prob. 49P
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, civil-engineering and related others by exploring similar questions and additional content below.Similar questions
- Please solve the given problem.arrow_forwardCalculate the thermal resistance due to convection for the following situations: a. warm water with h = 200 W/m2 K b. warm air with h = 10 W/m2 K c. warm moving air (windy situation) h = 30 W/m2 Karrow_forwardFind the heat load for the following side of a house for a 70°F design temperaturedifference. The wall is a wood frame with siding and 31⁄2 inches of insulation. The windowis double pane.arrow_forward
- problems in newton’s law of coolingarrow_forwardA room 3.6m x 5m x 8m fully replaces inside air after 3 hours. If the temperature from the outside is 80 F and temperature inside is 60F. Determine the ventilation heat load in Watts. subject Engineering utilities 2arrow_forwardPls. Answer thank you! A room's sensible space load is from occupants and infiltration, but excluding intentional ventilation, is 3.2 kw. A total of 600 L/s of outside air is required. What is most nearly the room sensible heat ratio?arrow_forward
- Calculate the heat loss from a double-pane glass window consisting of two pieces of glass, each having a thickness of 10 mm with a thermal conductivity of k = 1.3 W/m.K . The two glass panes are separated by an air gap of 7 mm. Assume thermal conductivity of air to be k = 0.022 W/m.K .arrow_forwardCompute the pressure heat a m, in feet of fluid A, indicated by open manometer in figure below when; (a) Fluid is oil (sp gr 0.895), the gage liquid is carbon tetrachloride (sp gr 1.95), y = 30.75 inch, z = 30.95 in(b) Fluid A is molasses (sp gr) 1.50), the gage liquid is water, y = 3.95ft, z = 1.75ft Note: Clear handwritten solutionarrow_forwardA forced air system takes return air at 62 degrees Fahrenheit (°F). It heats theair 59°F. What is the temperature of the heated air blown out to the room?arrow_forward
- 17-A refrigerator is to remove heat from the cooled space at a rate of 300 kJ/min to maintain its temperature at -8°C. Wam in.min REFRIG. 300 25°C -8°C kJ/minarrow_forwardfunction of elevation z above sea level is given by g = a - bz, where a 9.807 m/s² and b 3.32 x 106 $². Determine the height above sea level where the weight of an object will decrease by 1 percent. A 1-34 A 4-kW resistance heater in a water heater runs for 2 hours to raise the water temperature to the desired level. Determine the amount of electric energy used in both kWh and kJ.arrow_forwardEstimate the vapor pressure, air pressure, relative humidity, and air density at a height of 1500 m into the atmosphere. The total pressure is 100 kPa, air temperature is 28°C and the dew point temperature is 16°C near the ground, the lapse rate 6°C/km, which is constant for both air temperature and dew point temperature. The gas constant R is 287 J/kg-K and constant with respect to altitude. Air Density at 1500m, in kg/m3 Round to three (3) decimal placesarrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Engineering Fundamentals: An Introduction to Engi...Civil EngineeringISBN:9781305084766Author:Saeed MoaveniPublisher:Cengage Learning
Engineering Fundamentals: An Introduction to Engi...
Civil Engineering
ISBN:9781305084766
Author:Saeed Moaveni
Publisher:Cengage Learning