Does Blocking the Top of a Heating Element Direct Heat Horizontally?

In summary, the conversation discusses the effectiveness of using a reflector to direct heat horizontally from a heating element placed on a wall. The first statement suggests that by blocking the top of the heating element, more heat would be forced to go horizontally. The second statement questions whether the reflector would actually absorb the heat, rendering it unnecessary. The conversation also delves into the possibility of using a reflective reflector to direct radiant heat towards a target instead of relying on convection. Further discussion explores the different temperatures observed on the reflector and the wall, suggesting that heat may rise and stop at the plate before moving upwards.
  • #1
math111
43
0
I have a heating element. This heating element is placed on a wall. If I want the heat to be supplied horizontally would a relflector blocking the top of the heating element work?

to prove this are these two statements below correct??
1. Heat rises so by blocking the top of the heating element more heat would be forced to go horizontal.
2. The reflector on the top of the heating element would absorb the heat where it does not serve a purpose to make the heat flow horizontal?

So is it #1 where the reflector would do the job and direct the heat horizontally or is it #2 when it just absorbs the heat meaning the relfector is not even needed?
 
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  • #2
Considering only convection, I doubt it would do much. Sure it'd force some hot air horizontally around the reflector, but then it'll start rising again before getting far.

You call it a reflector, so if it's reflective you might want to orient it to reflect the radiant heat towards the target and forget about convection, which you'll pretty much need a fan or a duct to get going anywhere.
 
  • #3
By testing this showed above the reflector was cooler in temperature. The hottest part was the top part of the element where the edge of the reflector was. This is probably due to the heat rising and stopping + the heat in the rear moving horizontal.
X-Sectional view would be all the heat moving horizontally and up but stoping at the plate but then moving all that heat up where the plate ends.


----------Plate--------------edge up
|---------->Heat------>-----------up
|---------->heat----->----------up
Wall ----->heat------->---------up
|
 

1. How does convection heating work?

Convection heating involves the transfer of heat through the movement of a fluid, such as air or water. This occurs when the fluid near a heat source is heated and becomes less dense, causing it to rise. As it rises, it transfers heat to its surroundings and cools down, becoming more dense and sinking back down to be reheated. This cycle continues, creating a convection current that evenly distributes heat throughout the space.

2. What are the advantages of convection heating?

Convection heating is a more efficient way to heat a space compared to other methods, such as radiation. It also allows for more uniform heating, as the convection currents circulate the heated air or water. Additionally, convection heating is often more cost-effective and environmentally friendly, as it can be powered by renewable energy sources such as solar or geothermal power.

3. What types of systems use convection heating?

Convection heating can be found in a variety of systems, including central heating systems, space heaters, ovens, and even natural phenomena like ocean currents. It can also be used in industrial processes, such as drying and curing materials. Convection heating can be powered by electricity, gas, oil, or other fuel sources.

4. Are there any risks associated with convection heating?

Convection heating is generally considered safe, but there are some potential risks. One concern is the possibility of burns from touching hot surfaces, such as radiators or oven walls. Another risk is the potential for carbon monoxide poisoning if the heating system is not properly maintained. It is important to regularly check and maintain convection heating systems to ensure safety.

5. Can convection heating be used in all climates?

Convection heating can be used in any climate, but its effectiveness may vary depending on the temperature and humidity. In colder climates, convection heating may be supplemented with other heating methods to maintain a comfortable temperature. In warmer climates, convection cooling may be used instead, which involves circulating cool air through the space using the same principles as convection heating.

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