« previous next »

Author Question: A heat and moisture exchanger has an efficiency rating of 80. What does this mean? a. Of the ... (Read 70 times)

hubes95

  • Hero Member
  • *****
  • Posts: 561
on: Jul 16, 2018
A heat and moisture exchanger has an efficiency rating of 80. What does this mean?
 
  a. Of the exhaled water vapor, 80 returns to the patient on inspiration.
  b. The inspired temperature is 80 of the expired temperature.
  c. Of the exhaled water vapor, 20 returns to the patient on inspiration.
  d. The device provides 80 relative humidi-ty at body temperature.

Question 2

An ideal heat and moisture exchanger (HME) should have an efficiency rating of at least which of the following?
 
  a. 30
  b. 50
  c. 70
  d. 90


manuelcastillo

  • Sr. Member
  • ****
  • Posts: 304
Reply #1 on: Jul 16, 2018
Answer to Question 1

ANS: A
These devices typically achieve approximately 70 efficiency (40 mg/L exhaled, 27 mg/L re-turned).

Answer to Question 2

ANS: C
The ideal HME should operate at 70 efficiency or better.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Eating carrots will improve your eyesight. Carrots are high in vitamin A (retinol), which is essential for good vision. It can also be found in milk, cheese, egg yolks, and liver.

Did you know?

The types of cancer that alpha interferons are used to treat include hairy cell leukemia, melanoma, follicular non-Hodgkin's lymphoma, and AIDS-related Kaposi's sarcoma.

Did you know?

More than nineteen million Americans carry the factor V gene that causes blood clots, pulmonary embolism, and heart disease.

Did you know?

The Centers for Disease Control and Prevention (CDC) was originally known as the Communicable Disease Center, which was formed to fight malaria. It was originally headquartered in Atlanta, Georgia, since the Southern states faced the worst threat from malaria.

Did you know?

Although the Roman numeral for the number 4 has always been taught to have been "IV," according to historians, the ancient Romans probably used "IIII" most of the time. This is partially backed up by the fact that early grandfather clocks displayed IIII for the number 4 instead of IV. Early clockmakers apparently thought that the IIII balanced out the VIII (used for the number 8) on the clock face and that it just looked better.

Countercurrent heat exchange. Countercurrent heat exchange.
Production efficiency. Production efficiency.
In the heat of the Battle of Lake Erie, Perry had to abandon his flagship, the Lawrence, which had b In the heat of the Battle of Lake Erie, Perry had to abandon his flagship, the Lawrence, which had b
Co-current flow in a concentric tube heat exchanger Co-current flow in a concentric tube heat exchanger
Cover heat source to slow cooling by placing a towel over it. Cover heat source to slow cooling by placing a towel over it.
Get feedback every 5 to 7 minutes about heat intensity. Add or subtract heat barriers to maintain ... Get feedback every 5 to 7 minutes about heat intensity. Add or subtract heat barriers to maintain ...
Video: Pasteur's Experiment

For a complete list of videos, visit our video library