« previous next »

Author Question: A heat and moisture exchanger has an efficiency rating of 80. What does this mean? a. Of the ... (Read 51 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?

Today, nearly 8 out of 10 pregnant women living with HIV (about 1.1 million), receive antiretrovirals.

Did you know?

Barbituric acid, the base material of barbiturates, was first synthesized in 1863 by Adolph von Bayer. His company later went on to synthesize aspirin for the first time, and Bayer aspirin is still a popular brand today.

Did you know?

To combat osteoporosis, changes in lifestyle and diet are recommended. At-risk patients should include 1,200 to 1,500 mg of calcium daily either via dietary means or with supplements.

Did you know?

Nearly 31 million adults in America have a total cholesterol level that is more than 240 mg per dL.

Did you know?

Vampire bats have a natural anticoagulant in their saliva that permits continuous bleeding after they painlessly open a wound with their incisors. This capillary blood does not cause any significant blood loss to their victims.

A Need for Improved Water-Use Efficiency in Plants A Need for Improved Water-Use Efficiency in Plants
Heat Index Heat Index
Excess heat capacity chart Excess heat capacity chart
Check heat source for temperature. Evaluate the amount of heat given off from the source using your ... Check heat source for temperature. Evaluate the amount of heat given off from the source using your ...
How much heat energy in Joules is required to heat 16.0 g of copper from 23.0 °C How much heat energy in Joules is required to heat 16.0 g of copper from 23.0 °C
Heat Loss by the Body Heat Loss by the Body
Video: Tuberculosis Testing

For a complete list of videos, visit our video library