« previous next »

Author Question: A heat and moisture exchanger has an efficiency rating of 80. What does this mean? a. Of the ... (Read 50 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?

In 1835 it was discovered that a disease of silkworms known as muscardine could be transferred from one silkworm to another, and was caused by a fungus.

Did you know?

Signs and symptoms of a drug overdose include losing consciousness, fever or sweating, breathing problems, abnormal pulse, and changes in skin color.

Did you know?

There are 60,000 miles of blood vessels in every adult human.

Did you know?

For high blood pressure (hypertension), a new class of drug, called a vasopeptidase blocker (inhibitor), has been developed. It decreases blood pressure by simultaneously dilating the peripheral arteries and increasing the body's loss of salt.

Did you know?

As of mid-2016, 18.2 million people were receiving advanced retroviral therapy (ART) worldwide. This represents between 43–50% of the 34–39.8 million people living with HIV.

Alcohol Heat Alcohol Heat
Stronger threads are created by cold rolling a heat-treated bolt blank instead of cutting the ... Stronger threads are created by cold rolling a heat-treated bolt blank instead of cutting the ...
Many diesel fuel additives increase the cetane rating which results in improved fuel economy. Many diesel fuel additives increase the cetane rating which results in improved fuel economy.
Mechanisms of Heat Transfer Mechanisms of Heat Transfer
Remove the heat source, and check the skin for redness. Massage the area, and notice muscle ... Remove the heat source, and check the skin for redness. Massage the area, and notice muscle ...
Nonshivering heat production Nonshivering heat production
Video: How eudicots (true dicots) differ from monocots Animation

For a complete list of videos, visit our video library