Water is chilled by brine in a counter-current heat exchanger. If the flow rate of the brine is 2 kg/s and that of the water is 1 kg/s, estimate the temperature to which the water is cooled if the brine enters at -4°C and leaves at 12°C. The water enters the heat exchanger at 28°C. If the heat transfer surface area of the heat exchanger is 5.50m^2, determine the overall heat transfer coefficient. Take the mean heat capacity of brine and water to be 3.4 kJ kg^-1 K^-1, and 4.2 kJ kg^-1 K^-1 respectively.

I need help with this asap please. Thank you very much. I will tag anyone who answers as brainliest.​

Answers

Answer 1

Answer:The area of heat exchanger

Explanation:

Given that

Brine heated from 10°C to 35°C and water cools from 60°C to 45°C.

Lets take these are act as counter flow heat exchanger.

So

As we know that

Here

LMTD=29.7°C.

for water

0.3 x 4.187 x 15 = 950 x A x 29.7

So the area of heat exchanger

Explanation:


Related Questions

What is moment of inertia?

Answers

Answer:

A quantity expressing a body's tendency to resist angular acceleration. It is the sum of the products of the mass of each particle in the body with the square of its distance from the axis of rotation.

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What is moment of inertia?

importance of lifelessness, in physics, determinable measure of the turning inertia of a material—i.e., the obstruction that the physique exhibits to bearing allure speed of turn about an stalk altered apiece request of a armband (curving force).

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-ᴄʀᴀᴢʏꜰᴏᴍʏꜱᴇʟꜰ ꨄ

Which of these is a disadvantage of team work.​

Answers

something that is a disadvantage for team work is people not wanting to do their part in the project or whatever they are working on and making the rest of the team do their work plus the person that didn’t do anythings work all while the person who didn’t do anything takes all the credit

Technician A says that in a recirculating-ball steering box when the sector gear and nut teeth
are in a straight ahead position they have maximum free play or clearance. Technician B says
that in a recirculating-ball steering box when the sector gear and nut teeth are in a straight
ahead position they have minimum free play or clearance. Who is correct?

Answers

The second one I believe

Answer:

It's Technician B. A is not a good grade,

Explanation:

WILL GIVE BRAINLIEST!!! PLEASE HELP State and describe three different ways that agricultural engineering (machines, tools, irrigation systems, pesticides, fertilizers, genetic modification) could be applied to help reduce the loss of wheat crops in drought conditions.

Answers

Answer:

MACHINE TOOLS :

GAS , ORIGINATED ROBOT , CUTTING PLYERS.

SYSTEMS :

LAP TOP, IOS, ANDROID, CHROMEBOOK.

MODIFICATION

300% IS THE MODIFIED

Explanation:

thats it !! <3

lets see how many of yall really know ur stuff i am asking random questons about cars or trucks and lets see if yall anwser right...... how many 02 sensors otherwise know as oxygen sensory will a moden day ram 1500 have

Answers

Answer:

4

Explanation:

In a black box experiment, when the amount of material exiting a closed system is less than the amount of material entering the system, what conclusion can the experimenter make?
A.
that material remained in the system
B.
that material was lost
C.
that it will be difficult to make an accurate measurement
D.
that parts of the system need to change

Answers

When the material that exits is lesser in amount than that of the entering material in a black box experiment, the parts of the system need to be changed.

What happens in a black box experiment?

In a black box experiment, the experimenters need to make assumptions regarding the drawing of conclusions. One such conclusion is the amount of material that exits.

If such amount is lesser than the one that enters the system, such experiment concludes that it is the time to change the parts of the system.

Hence, option D holds true regarding the black box experiment.

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How can i get my lost phone if its 0% charge?
Help me plss for brainlest​

Answers

Answer:

I think you need to hope that whoever has it charges it it’s more just luck

Explanation:

It this is what you need to do I’m really sorry.

All phones still have a sort of charge in case this happens. You will have to go to a local police station and once you do that, you will have to tell them what your problem is and then give them your phone number

Have a nice day!

what would happen if a low-pressure steam locomotive reached over 700 PSI, would it blow up or would something in the boiler burst?

Answers

Answer: Absolutely. Boiler explosions are a huge hazard, whether stationary or on a train engine. These days boiler construction is much better understood, and highly regulated, so it’s a pretty rare occurrence, but a century ago, they were pretty common.

There was even a stunt staged in 1896 where two old steam locomotives (and trains) were crashed into each other. Despite the expectations that the boilers would not explode, they did, and killed a couple of people and injured many more.

Explanation:

What's a safety policy you would like to implement? Write what it is, explain it and act like you're writing an instruction manual about it.

Answers

Answer: You can write a safety manual that includes general safety tips and what to do in case of an emergency. Consider including sections on events such as: Fire.

Explanation:

what are some ideas for devices to clean up oil spills?.......it for a project..

Answers

Answer: Super High Efficiency. Enhanced Separation Process. No power consumption. No moving parts. Compact size. No chemicals. Low maintenance. Models: Above Ground, Sewer Pre-Treatment, Below Ground, Clarifier System.

Explanation:

Which option correctly explains the outcome of the following scenario?
An engineer conducted an analysis of a transmission. He did not ensure that all of the subsystems were
broken down to their smallest levels, and he also kept inaccurate records. As his teammates studied what he
had done, they were not able to figure out how to recreate the design.
O It was impossible to know how to recreate the device as there were not correctly written documents to follow.
O The functions were broken down to the simplest level, but the improper documents made it impossible to recreate the device.
O The functions were not broken down to the simplest level, so it was impossible to know how to recreate the device.
It was possible to know how to recreate the device, but protocol requires proper documentation before engineers can
complete a proiect

Answers

The functions were not broken down to the simplest level, so it was impossible to know how to recreate the device.

24) A technician is load testing a fully charged battery rated at 600 cold-cranking amps (CCA). The ambient temperature is 70 F Which of these curent draw and the pericts should be used for the t AC 150 years for 30 seconds C200 amps for 15 seconds 600 amps for 30 seconds CO 1200 amps for 15 seconds

Answers

The current draw that should be used for the test by the technician when charging the battery is C. 600 amps for 30seconds.

Who is a technician?

It should be noted that a technician simply means an individual that is in charge of a technical equipment.

In this case, since the technician is load testing a fully charged battery rated at 600 cold-cranking amps, the current draw that should be used is 600 amps for 30seconds.

Learn more about technicians on:

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The statement that a voltage can be induced in a conductor by a changing magnetic field is known as ____________________ law.

Answers

Answer:

Explanation:
The statement that a voltage can be induced in a conductor by a changing magnetic field is known as faraday's law

Hope its help u thank you....

Question:
Crash attenuators
Options:
breakaway sign post
median
barrier
liquid or sand filled drum

Answers

Answer:

the answer is C liquid or sand filled drum

Explanation:

State and describe three different ways that agricultural engineering (machines, tools, irrigation systems, pesticides, fertilizers, genetic modification) could be applied to help reduce the loss of wheat crops in drought conditions.

Answers

Agricultural engineering involves the use of pesticides in large land extensions, controlled water systems, and GMO organisms to face environmental conditions.

What is Agricultural Engineering?

Agricultural engineering refers to current technologies and strategies used to increase crop production.

For example, the use of genetically modified crops (GMOs) that synthesize certain proteins to face abiotic conditions is a type of Agricultural engineering.

In conclusion, Agricultural engineering involves the use of pesticides in large land extensions, controlled water systems, and GMO organisms to face environmental conditions.

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The web page you created displays the time in the correct time zone for the user's location.


What language was most likely to have been used?

C. JavaScript
Because -- If a web page displays the current time, the web page probably uses JavaScript to make it happen

Answers

The option C JavaScript is used by web pages to find the user's time zone so that times can be displayed correctly.

What is JavaScript?

JavaScript is an OOP scripting language which is a text-based programming language used to make web pages interactive.

It is also used by web pages to find the user's time zone so that times can be displayed correctly.

Hence, JavaScript is true as it used for finding real time by web pages.

Learn more about JavaScript here,

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According to the video, what qualities do Traffic Technicians need? Check all that apply.
mechanical skills
physical flexibility
leadership
ability to drive large trucks
good eyesight
confidence
patience
attention to detail

Answers

Answer: 1 2 5 7 8

Explanation:

I just did it

Answer: mechanical skills, physical flexibility, good eyesight, patience, and attention to detail

Explanation:

Just did the question, I hope I help you guys! :)

Darcy has selected trusses for the roof framing of her home. The contractor has just received the shipment with the trusses, and he tells her that he won’t be able to install them. Which reason for this hiccup makes the MOST sense?

Answers

The reason for this hiccup makes the most sense is when the chosen trusses  is one that the contractor  has no knowledge about and his expertise is limited.

What are Hiccups?

This is known to be an issue that arises as a result of  sudden excitement or others. In the case above, it is due to the roofing issue.

Note that the reason for this hiccup makes the most sense is when the chosen trusses  is one that the contractor  has no knowledge about and his expertise is limited.

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why do birds have wings

Answers

Answer:

Their feathers are light and the shape of their wings is perfect for catching the air. Their lungs are great at getting oxygen and very efficient, so they can fly for very long distances without getting tired. They eat lots of high-energy food.

Answer:

to fly and to slap

Explanation:

Lets Try This: study the pictures. Describe what you see and think about it. write your answer on a sheet of paper. home room

Answers

Answer: I see three children cleaning the lawn while one of them are raking the leaves and one is holding a dust pan. The other child is holding a bucket. On the other picture, i see a young boy watering plants.

BTW: these pictures are not very clear so answers may vary.

Explanation:

Which of the following describes air temperature and air pressure at higher altitudes?

A Air temperature increase while air pressure decreases
B Air temperature and air pressure both decrease
C Air temperature and air pressure both increase
B Air temperature decreases while air pressure increases

Answers

Answer:

B

Explanation:

The answer to your question is B.

According to the video, many Traffic Technicians work for what type of organization?
O government agencies
O private companies
O nonprofit organizations
news media



Answers

Answer:
goverment agencies
Explanation:

Answer:

Government AGencies

A

Explanation:

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