Wall heating - through water pipes

In Summary, it's not clear to me what you are trying to model and it's an iterative process to find the heat flows, water and water temperatures, with respect to height.
  • #1
Radion
2
0
Hello,
Me and my buddys doing aproject on Heat transfer.
we choose wall heating as our subject and we have some issue on modeling the system.

our system is :
two walls, one exposed to the atmosphere the other is the house wall.
between them there's a pipe with hot water and some aire.

we can't figured out how to approch the problem, we tried to model it with combination of convective and conduction butour DR said that the model is not good becouse there is an heat exchange.

any help will be appreciated.

thanks
 
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  • #2
Welcome to PF.

It isn't at all clear to me just what your setup is and what you are trying to model. Can you be more descriptive? Provide a diagram?
 
  • #3
Radion said:
Hello,

we can't figured out how to approch the problem, we tried to model it with combination of convective and conduction butour DR said that the model is not good becouse there is an heat exchange.

thanks

Hello Radion,
Not all that easy of a problem. in an enclosed space.

Hot pipes will have heat flow to the air in the wall. With a convective component, the air will have a flow pattern within the space - maybe a loop of some sort. Maybe not, as the top of the air space may just become hotter than the bottom and convection will slow or stop at steady state - maybe. Depends upon the insulation of walls and the rate of heat flow through the walls.

If the hot water enters from the bottom, it loses heat and drops in temperature, so the water could have a negative temperature gradient from bottom to top. Heat flow temperature dependence would have more heat flow from the pipe bottom to the air, than heat flow from pipe top to air. Then again, is the air at the top warm enough to re-heat the water at the top...

The air in contact with the walls - conduction and maybe convection with reservations as stated previously.

An iterative process to find the heat flows, water and water temperatures, with respect to height in my opinion.
Similar to a heat exchanger analysis.
 

Related to Wall heating - through water pipes

What is wall heating through water pipes?

Wall heating through water pipes is a method of heating buildings by circulating hot water through pipes that are installed within the walls. The heat from the water radiates outwards, providing a comfortable and even heat distribution throughout the room.

How does wall heating through water pipes work?

The system works by using a boiler to heat the water, which is then pumped through a network of pipes installed in the walls. The pipes are usually made of flexible plastic or copper, and are placed close to the surface of the wall to allow for maximum heat transfer. As the water circulates through the pipes, it radiates heat outwards, warming up the room.

What are the benefits of wall heating through water pipes?

There are several benefits to using this method of heating. Firstly, it provides an even distribution of heat throughout the room, eliminating cold spots and creating a more comfortable living space. It is also more energy efficient compared to traditional heating methods, as the water can be heated using renewable energy sources. Additionally, the lack of visible radiators or heating units can create a more aesthetically pleasing living environment.

What are the potential drawbacks of wall heating through water pipes?

One potential drawback is the installation process, which can be more complicated and time-consuming compared to traditional heating systems. This can also make repairs or maintenance more difficult and costly. Another drawback is that the walls may take longer to heat up compared to a traditional heating system, as the water needs time to circulate and transfer heat. Additionally, if there is a leak in the pipes, it could cause damage to the walls and flooring.

Is wall heating through water pipes suitable for all buildings?

Wall heating through water pipes is suitable for most buildings, including residential homes, offices, and commercial spaces. However, it may not be suitable for buildings with thicker walls or those with limited space for pipe installation. It is important to consult with a professional and assess the specific needs and limitations of the building before deciding on this heating method.

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