Course Content

  • AHU Fresh Air

Course Content

FAQs

Q(L)=720 x R x ΔH where: Q(L) is the Latent heat load in kcal/h. R is the fresh air rate in m3/h. ΔH is the absolute difference in outdoor and indoor humidity in kg/kg.

The outside air intake is calculated by multiplying the sum of Vbz in each zone by the calculated Ev value. In our example, if Vbz=600 CFM and Ev=0.6, the outdoor air intake equals 6000.6 = 1000 CFM.

Fresh air is essential for the overall health of HVAC systems and buildings. Ventilation systems, which all have one thing in common: their fresh air is outside air, are the solution for keeping fresh air circulating. It improves the building's air quality by replacing stale or filthy air.

The amount of fresh air required in a building can be calculated using both mass and heat transfer principles. The ventilation rate is defined as the volume of fresh air that reaches an area per unit time (kg/s) or hPa (ft3/min).

As the number of people become more concentrated in certain areas, it is common for buildings to have ventilation systems. One of the biggest benefits of using this type of system is that it can help reduce energy costs as well as improving air quality with proper filtration.

Recommended Courses

Share With Friend

Have a friend to whom you would want to share this course?

Download LearnVern App

App Preview Image
App QR Code Image
Code Scan or Download the app
Google Play Store
Apple App Store
598K+ Downloads
App Download Section Circle 1
4.57 Avg. Ratings
App Download Section Circle 2
15K+ Reviews
App Download Section Circle 3
  • Learn anywhere on the go
  • Get regular updates about your enrolled or new courses
  • Share content with your friends
  • Evaluate your progress through practice tests
  • No internet connection needed
  • Enroll for the webinar and join at the time of the webinar from anywhere