Convective Heat Transfer

This analysis type is used when temperature changes in the fluid lead to density variations and movement of the fluid due to gravity. This solver can be used for natural convection but also for forced convection, when flow motion is induced by external forces, such as inlets, pumps or fans. | Page 45

The flow of heatload which affect the evaporation rate of fuel kept in a cryostat. This we need to figure out.

This project aims at analyzing and understanding how thermal comfort can be achieved in an office space of 4 occupants.
The scenario takes place in summer conditions ( 42C outside temperature and  65 relative humidity). The thermal comfort metric used in this project is predicted mean vote (PMV) and the target range is -0.5/0.5.
The original scenario results, where the external walls have a low insulation value and the inlet temperature is 19.85 degrees Celsius,  show exceeding PMV values (2.8 on average at the humans' surfaces) that are beyond the recommended ASHRAE-55-2017 values.
To improve the PMV values and the energy consumed in order to cool the occupants, the insulation value for the walls and windows were changed to reflect the impact of adding an insulation layer. The results of the improved scenario show a significant saving in energy spending whereas the thermal comfort of the occupant isn't changed significantly. 
The next stage is to adjust and find an inlet temperature at a suitable level in order for the occupants to feel comfortable. The flowrate value wasn't modified because it would produce airspeed and therefore negatively impact the PMV values.
Working with a difference between the average room air temperature and the inlet temperature of 9 degrees Celsius, and aiming for a 22degres Celsius average room temperature as a starting point, an inlet of 14 degrees was used.
Simulation runs were performed at 14,13,12,11, and 10 deg Celsius until the measured PMV values for the occupants were all within the target range of (0.5/0.5). The  satisfactory condition scenario was determined to be with a 10 degrees Celsius inlet temperature. - Copy

Thermal comfort analysis of a classroom HVAC.

Thermal Comfort of an office space. Looking at how the air moves from the circular diffusers (note the coanda) and whether the occupants are comfortable. - Copy

Model heat flow from PC through desk air circulation

Checking the airflow for a triangle rocket cone

The aim of this test case is to validate the temperature profile  for a buoyant flow simulation between a hot and cold cylinder. - Copy