This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: Explain why the temperature change of coolant water in once-through cooling depends on the rate at ... (Read 74 times)

audie

  • Hero Member
  • *****
  • Posts: 532
on: Jul 28, 2018
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
Reply #1 on: Jul 28, 2018
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
Gracias!

bimper21

  • Member
  • Posts: 309
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

IgA antibodies protect body surfaces exposed to outside foreign substances. IgG antibodies are found in all body fluids. IgM antibodies are the first type of antibody made in response to an infection. IgE antibody levels are often high in people with allergies. IgD antibodies are found in tissues lining the abdomen and chest.

Did you know?

Illness; diuretics; laxative abuse; hot weather; exercise; sweating; caffeine; alcoholic beverages; starvation diets; inadequate carbohydrate consumption; and diets high in protein, salt, or fiber can cause people to become dehydrated.

Did you know?

As many as 28% of hospitalized patients requiring mechanical ventilators to help them breathe (for more than 48 hours) will develop ventilator-associated pneumonia. Current therapy involves intravenous antibiotics, but new antibiotics that can be inhaled (and more directly treat the infection) are being developed.

Did you know?

More than 20 million Americans cite use of marijuana within the past 30 days, according to the National Survey on Drug Use and Health (NSDUH). More than 8 million admit to using it almost every day.

Did you know?

Certain topical medications such as clotrimazole and betamethasone are not approved for use in children younger than 12 years of age. They must be used very cautiously, as directed by a doctor, to treat any child. Children have a much greater response to topical steroid medications.

Properties of Water Properties of Water
In countries where water can be contaminated, breastfeeding is an important option for the health of ... In countries where water can be contaminated, breastfeeding is an important option for the health of ...
Factors Affecting Body Temperature Factors Affecting Body Temperature
How much the temperature will rise depends on many factors that affect the level of GHG emission How much the temperature will rise depends on many factors that affect the level of GHG emission
Water and Body Fluids Water and Body Fluids
What is the molarity of chloride ions when 10.4 grams of MgCl2 is dissolved in 753 mL of water? What is the molarity of chloride ions when 10.4 grams of MgCl2 is dissolved in 753 mL of water?
Video: Hormonal regulation of pregnancy - weeks 17 through 38

For a complete list of videos, visit our video library