This site is a tool for thermal heat calculations for heat flow and surface temperatures on walls or pipes. From your list of materials you assemble a wall to perform calculations on.
Our calculations are based on the principles of convection. Most importantly the natural convection that occur between the furnace wall (the shell surface) and the atmosphere caused by the difference in temperature between the two bodies.
The calculation is based on the number of layers in the wall
Set materialtypes and athmospheric variables such as convection type and temperatures. Then run your thermal heat calculation.
Create and save your own private materials to use in your thermal calculations. Old calculation diagrams and result tables are stored as pdf and can be accessed and downloaded at any time from your profile page
Signup is free. Upon registration you receive a bonus package to help you evaluate our service. This package has 10 calulations and is the smallest one in our range. Signup is simple. You can call us during regular office hours or send us an e-mail with your details on all hours of the day.
Natural convection is a form of heat transfer where air movement is not driven by an external source, such as wind, but the differences in air density, which in turn is caused by temperature differences.
The air surrounding a heat source will naturally always receive heat energy. This reduces the density of the air so that it starts to rise. The surrounding colder air drops and replaces the heated air. This cooler air is then heated and the process proceeds, so that an air stream is formed in which energy is supplied from the bottom to the top of the cycle.
The driving force for the natural convection is that warm air rises as a result of differences in air density. This means that even in an enclosed room with no ventilation, there will aways be some natural air movement, even at 0 m/s mechanical air velocity. It is very important that thermal calulations take this factor into account.
The compound of the natural convection air movement and the actual mechanical wind acting on the wall (called air velocity in the calculation sheet) forms a very important factor in governing the shell surface temperature.
