A counter-flowing heat exchanger conserves energy by heating cold outside fresh air at 10oC with the outgoing
Question:
Step by Step Answer:
The outside fresh air is heated up to T 4 50 o C 100 50 th...View the full answer
Fundamentals of Thermodynamics
ISBN: 978-0471152323
6th edition
Authors: Richard E. Sonntag, Claus Borgnakke, Gordon J. Van Wylen
Related Video
An air pump is a device used to inflate or deflate objects by moving air in or out of them. There are many different types of air pumps, ranging from manual hand pumps to electrically powered pumps, and they are used for a variety of purposes. John had trouble blowing up many balloons without a balloon pump and experienced pain. He solved this problem by using an empty plastic bottle with a rectangular-shaped hole in the cap, a cut piece of balloon stretched over it, and a small hole in the bottle. By pressing and releasing the bottle, he created an air pump to inflate the balloons without any discomfort. Air pumps utilize fluid mechanics and thermodynamics principles to increase air pressure inside an object being inflated, such as a bicycle tire. The ideal gas law is used to calculate the pressure inside the tire. As air pressure increases, the object becomes more rigid and can support more weight. The efficiency of the pump is determined by how much of the work done is converted into useful work, such as inflating the tire, and how much is lost as heat. Understanding these principles is important to effectively use and optimize the use of air pumps.
Students also viewed these Thermodynamics questions
-
A counter flowing heat exchanger cools air at 600 K, 400 kPa to 320 K using a supply of water at 20C, 200 kPa. The water flow rate is 0.1 kg/s and the air flow rate is 1 kg/s. Assume this can...
-
A counter flowing heat exchanger is used to cool air at 540 K, 400 kPa to 360 K by using a 0.05 kg/s supply of water at 20C, 200 kPa. The air flow is 0.5 kg/s in a 10-cm diameter pipe. Find...
-
A counter flowing heat exchanger has one line with 2 kg/s at 125 kPa, 1000 K entering and the air is leaving at 100 kPa, 400 K. The other line has 0.5 kg/s water coming in at 200 kPa, 20C and leaving...
-
3. How do the marginal costs of pollution reduction and the marginal costs of pollution damage change as pollution levels increase? The marginal costs of pollution reduction remain constant and the...
-
Distinguish between a Wage Earner Plan and straight bankruptcy.
-
A car that runs on natural gas has it stored in a heavy tank with a maximum pressure of 3600 psi (25 MPa). Size the tank for a range of 300 miles (500 km), assuming a car engine that has a 30%...
-
A pitcher can pitch a "curve ball" by putting sufficient spin on the ball when it is thrown. A ball that has absolutely no spin will follow a "straight" path. A ball that is pitched with a very small...
-
Alliance Air is a service in which customers pay a flat-rate to Alliance Air and are guaranteed a seat on an airplane between any two locations. To offer this service, Alliance Air prepurchases daily...
-
Find the net-present-value analysis of the school board's two main alternatives: (a) continue to use the full-size buses on regular routes or (b) purchase the minibuses. Should the minibuses be...
-
Is the State of Michigan justified in advertising the prize amount as $1.586 billion? Explain.
-
Liquid water at 80oC flows with 0.2 kg/s inside a square duct, side 2 cm insulated with a 1 cm thick layer of foam k = 0.1 W/m K. If the outside foam surface is at 25oC how much has the water...
-
Saturated liquid water at 1000 kPa flows at 2 kg/s inside a 10 cm outer diameter steel pipe and outside of the pipe is a flow of hot gases at 1000 K with a convection coefficient of h = 150 W/m2 K....
-
Follow the instructions in the preceding the case 10.59. Write the audit approach section like the cases in the chapter. Rogue Trader In February 1989, 22- year- old Nicholas Leeson joined Barings...
-
Why arent the things on my app for assignments showing up when i go to the internet log in page on my computer?
-
Compare the idea of what it means to be human using the film, ''About Time'' and comparing that idea against another example from another work of art (painting, photography, poem, literature, film,...
-
Think of a problem encountered in the past by a group of which you are a member. Begin your analysis by defining the group. What type of group was it? At what stage of development was the group? And...
-
How well is Hudson Bay Company performing within customer loyalty and what strategic changes should Hudson employ in order to increase the loyalty of its customers? Both the North West Company and...
-
Earlier in the module, you learned about the HR policies and practices that are viewed as most effective in achieving disability inclusion goals. (Go back and review them if you need to.) Why do you...
-
Find the conservative vector field for the potential function by finding its gradient. h(x, y, z) = x arcsin yz
-
Define the term utility software and give two examples.
-
An isolated system consists of two very large thermal reservoirs at constant temperatures of 100 oC and 0 oC. Assume the reservoirs made contact and 1000 J of heat flew from the cold reservoir to the...
-
Two large heat reservoirs at temperatures 200 oC and 60 oC, respectively, are brought into thermal contact, and 1.50 x 103J of heat spontaneously flows from one to the other with no significant...
-
A system goes from state 1 to state 3 as shown on the TS diagram in Fig. 12.25. (a) The heat transfer for the process going from state 2 to state 3 is (1) positive, (2) zero, (3) negative. Explain....
-
Please view the video and think through what these supply chains may look like if these technologies or practices become ubiquitous. Let me know your thoughts within 500 word limit in the context of...
-
How do genomic imprinting and parent-of-origin effects shape gene expression patterns, and what are the implications for diseases associated with disruptions in imprinting, such as Prader-Willi and...
-
Ronald Powers, a well-known local entrepreneur, owned several businesses that filed for bankruptcy from 2010 to 2015. Last year, Powers established R. P. Properties, Inc. Powers is the sole...
Study smarter with the SolutionInn App