This topic contains a solution. Click here to go to the answer

Author Question: Explain why the temperature change of coolant water in once-through cooling depends on the rate at ... (Read 61 times)

audie

  • Hero Member
  • *****
  • Posts: 532
Explain why the temperature change of coolant water in once-through cooling depends on the rate at which water is pumped through the condensers.
 
  What will be an ideal response?

Question 2

Alien species usually are aggressive invaders.
 
  What will be an ideal response?



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Anton

  • Sr. Member
  • ****
  • Posts: 302
Answer to Question 1

The amount of energy transferred to the water is, by definition of specific heat
(Ch. 7), (water mass) x (specific heat) x (temperature change). Now, a certain amount of
energy is transferred to the water per unit of time. This is the power involved. A pump can
move so much water in a given amount of time (the pump's water transfer rate is measured
in cubic meters per second). The water mass per unit time is the density times the water
transfer rate. Thus, for a fixed power output to the environment, we have
power = (water mass per unit time) x (specific heat) x (temperature change).
The specific heat is fixed. The greater the water transfer rate, the smaller the temperature
change and vice versa.

Answer to Question 2

Some alien species are aggressive, others aren't. It is not possible to know ahead
of time which invaders will exploit their new homes and become nuisances.




audie

  • Member
  • Posts: 532
Reply 2 on: Jul 28, 2018
Excellent


komodo7

  • Member
  • Posts: 322
Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

 

Did you know?

The shortest mature adult human of whom there is independent evidence was Gul Mohammed in India. In 1990, he was measured in New Delhi and stood 22.5 inches tall.

Did you know?

Many supplement containers do not even contain what their labels say. There are many documented reports of products containing much less, or more, that what is listed on their labels. They may also contain undisclosed prescription drugs and even contaminants.

Did you know?

Amoebae are the simplest type of protozoans, and are characterized by a feeding and dividing trophozoite stage that moves by temporary extensions called pseudopodia or false feet.

Did you know?

Cutaneous mucormycosis is a rare fungal infection that has been fatal in at least 29% of cases, and in as many as 83% of cases, depending on the patient's health prior to infection. It has occurred often after natural disasters such as tornados, and early treatment is essential.

Did you know?

Side effects from substance abuse include nausea, dehydration, reduced productivitiy, and dependence. Though these effects usually worsen over time, the constant need for the substance often overcomes rational thinking.

For a complete list of videos, visit our video library