Ventilation Energy and Environmental Technology
                                     from VEETECH Ltd.              Updated 8th December  2010

Prepare to be Sick in your Airtight Home! 

Tutorial  5    Simple Ventilation Calculation Examples 

[See Disclaimer and Important Notes]

CLICK HERE for PHPAIDA The Interactive Ventilation Calculator Based on Opening Area combined with Wind, Stack and Mechanical Ventilation

Use the tutorials to calculate the ventilation rates for the configurations shown below. These may all be calculated by hand. Once completed use PHPAIDA to verify the calculated values.

• The Building Volume is 250 m3

• The size of each opening is 1000 cm2

• The wind speed at a nearby met station is 4.5 m/s

• The outside air temperature is 0 Deg C

• The inside air temperature is 20 Deg C

For each of the above figures calculate by hand:

• Ventilation Rate (L/s);

• Air Change Rate;

For:

• Open Terrain;

• Shielded (Urban Terrain).

Compare the results using PHPAIDA

This completes Tutorial 5

Go To:

• Disclaimer and Important Notes;
  

• Tutorial 1 - Calculating Flow Rate through Openings - The Equations ;
  

• Tutorial 2 - Determining the natural driving forces (wind and temperature) ;
  

• Tutorial 3 - Developing a Flow Network and Introducing Mechanical Ventilation;
  

• Tutorial 4 - Solving the Flow Equations;
  

• Tutorial 5 - Simple Examples
  

• Tutorial 6 - The Online Algorithm PHPAIDA

[Return to Tutorials]