! Required information Sometimes equations can be developed and practical problems solved by knowing nothing more than the dimensions of the key parameters. For example, consider the heat loss through a window in a building. Window efficiency is rated in terms of R value, which has the unit of ft2-hr-°F/Btu. A certain manufacturer offers a double-pane window with R=2.5 and also a triple-pane window with R= 3.4. Both windows are 3.5 ft by 5 ft. On a given winter day, the temperature difference between the inside and outside is 45°F. How much heat is lost through the double-pane window? Btu

! Required information Sometimes equations can be developed and practical problems solved by knowing nothing more than the dimensions of the key parameters. For example, consider the heat loss through a window in a building. Window efficiency is rated in terms of R value, which has the unit of ft2-hr-°F/Btu. A certain manufacturer offers a double-pane window with R=2.5 and also a triple-pane window with R= 3.4. Both windows are 3.5 ft by 5 ft. On a given winter day, the temperature difference between the inside and outside is 45°F. How much heat is lost through the double-pane window? Btu

Engineering Fundamentals: An Introduction to Engineering (MindTap Course List)

5th Edition

ISBN:9781305084766

Author:Saeed Moaveni

Publisher:Saeed Moaveni

Chapter15: Computational Engineering Tools Matlab

Section: Chapter Questions

Problem 18P

See similar textbooks

Similar questions

The calorie is defined as the amount of heat required to raise the temperature of 1 gram of water by 1C. Also, the energy content of food is typically expressed in Calories, which is equal here to 1000 calories. Convert the results of the previous problem to calories (1 Btu = 252 calories).
1.How many days will it take you to consume a 10-m^3 of water if your daily consumption is 30 liters?2.How many tiles would be needed to cover a 30ftx28ft floor area if a tile measures 30cmx30cm?How many tiles will you buy?3. How many pieces of plywood would be used to cover the ceiling in #2 if the measurement of the ceiling is the same as the floor area and if a plywood measures 1.22 m x 2.44 m? How many pieces of plywood will you buy?4.An Aquarium measures L=5ft, 3ft and H= 20 inches.How many liters will it contain if it will be filled with water until 2 inches below its brim?5.An atom has a diameter of 3.5x10^-10m.What is the measurement in a.)cm and b.) nm6.What is the equivalent speed of light which is 299792458.0 m/s to:a)km/hb)nm/usc)cm/nsd)um/s7.A book measure L=10 inches, W= 8 inches, and H=2 inches.How many of these can be packed in a box that measures L=50cm,W=50cm, and H=60cm if it is to be filled up to the maximum number (this means that no book or any part of it can be…
) Room ventilation is an important area of environmental and architectural engineering for the application of fluid mechanics. Suppose there is a source S (mass per unit time) of air pollution in a room of volume V. Examples include carbon monoxide from cigarette smoke or an unvented kerosene heater, emissions from household cleaning products, and vapors given off by evaporation of volatile organic compounds from an open container. Let C represent the mass concentration (mass of contaminant per unit volume of air) and Q represent the volumetric flow rate of fresh air entering the room. If the room air is well mixed so that the concentration is uniform throughout the room, but varies with time, the differential equation for mass concentration in the room is: Where kw is an adsorption coefficient and As is the surface area of walls, floors, etc., that adsorb some of the contaminant. V.dC/dt = S-QC-Aw.As.C Write the primary dimensions of the first three additive terms in the equation,…
A hemispherical tank of diameter 4 m contains water up to a height of 2.0 m. An orifice of diameter 50 mm is provided at the bottom. Find the time required by water to fall from 2.0m to 1.0m. Take Cd=0.60. a.3179 seconds b.2582 seconds c.1814 seconds d.3600 seconds
A hemispherical tank of diameter 4 m contains water up to a height of 2.0 m. An orifice of diameter 50 mm is provided at the bottom. Find the time required by water to fall from 2.0m to 1.0m. Take Cd=0.60. include your free body diagram a. 2582 seconds b. 1814 seconds c. 3600 seconds d. 3179 seconds
A nozzle discharges 155lit/sec with a velocity of 35m/s. The entire jet strikes a vane moving in the same direction as the jet with a velocity of 20m/s. Compute the Force exerted on the vane Choices: 1924.13 1942.13 1294.31 1429.13 Note:please base your answer on the given choices thanks for the help and please help me in this sampl question
The reading of an automobile fuel gage is proportional to the gage pressure at the bottom of the tank. If the tank is 30 cm. deep, and is contaminated with 3.05 cm. of water at the bottom, how many meters of air remains at the top when the gage indicates "FULL"? Use Unit weight of: gasoline = 6.24 kN/m3; air = 12.6 N/m3. The tank is closed. ANSWER : 0.017
A liquid is flow throw Rotameter to a tank of size ( L x W x H ) and it is required to full the tank to level of H as shown in Figure . What time is required to full the tank by this liquid ? What time is required to drop the liquid in the tank to from level H to D by rectangular notch ?
Besides energy savings, what are other advantages that observation of daylight saving time may bring?
please include free body diagram A hemispherical tank of diameter 4 m contains water up to a height of 2.0 m. An orifice of diameter 50 mm is provided at the bottom. Find the time required by water for completely emptying the tank. Take Cd=0.60. a. 2582 seconds b. 1814 seconds c. 3600 seconds d. 3179 seconds
The kitchen of a house measures 13 feet by 14 feet. There are 8-foot ceilingsin the house. Find the volume in the room in cubic meters. Round to thenearer whole cubic meter.
1. Due to government water privatization, a bustling metropolitan city is now home to substantial and continuous water supply. While before the supply was only 200 liters/sec on old pipes, it is now 350 liters/sec running on a new steel pipe network shown on the figure below. . Given: f = 0.015 (for all pipes except the outlet pipe) f = 0.014 (for outlet pipe) Compute the flow of water in the upper branch. Compute the flow of water in the lower branch. Compute the energy loss per unit mass between the inlet and the outlet.