EASTechnology

Our CFD capabilities can be used to assess how much the building is losing or gaining energy depending on the winter or summer conditions. We can assess the following:

• Heat loss and gain
• Annual energy Consumption
• Effect of different designs
• Very complex geometries
• Optimize the design in terms of energy saving
• Effect wall material properties
• Air supply diffusers

In the assessment, the heat loss (winter conditions) or heat gain (summer conditions) are predicted.

Using the Heating Degree Days (HDD) or the Cooling Degree Days (CDD), the annual energy consumption is calculated.
In the below images, CFD assessment of the energy consumption in a building is illustrated, during the winter season.

In the modeling, the inside temperature was kept to a constant temperature of 20o C (room temperature) and the outside to -6.6o C (winter conditions).

Temperature distribution at the middle of the room	CFD results – Room Average Temperature

The total heat losses through the walls, ceiling, floor, windows/doors and ventilation for this example are predicted to be around 17.2 [KW] or 58740 [BTU/hr] once the simulation has reached a steady state solution.

CFD results – Total Heat Loss

The annual energy consumption is calculated using the number of HDD for this location.

The annual heat consumption cost is calculated based on the fuel type, fuel price and the furnace efficiency.

GHG (CO2) emitted from a building can be also calculated.

Annual Energy Consumption Summary – Winter season