How much energy transferred when we burn a piece of wood ?

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In summary, burning a 1 Kg piece of wood in a 1 cubic meter closed box with perfect heat insulation will result in a temperature rise in the surrounding air. However, due to the limitation of oxygen supply, only a portion of the wood will burn. To determine the exact temperature rise, the concept of heat capacity must be considered.
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RAJEEV THORAT
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Hi All,
If we burn a piece of wood having mass 1 Kg, in a closed surrounding (Box),
If box is 1 cubic meter in size and box is perfectly heat insulated .
Will all energy of wood , say 3,890 K cal/Kg , get transferred to air surrounding it ?
How much temperature rise of the air will occur?

Thanks in advance.
 
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  • #2
If the box is closed then some of the wood will burn, but very quickly all of the Oxygen will be used up and it will cease burning.
 
  • #3
RAJEEV THORAT said:
How much temperature rise of the air will occur?

Look up "heat capacity". That is the key concept you need to answer this question.
 

1. How is energy transferred when we burn a piece of wood?

When we burn a piece of wood, the chemical bonds within the wood's molecules are broken down through a process called combustion. This releases heat energy, which is then transferred to the surrounding environment in the form of thermal energy.

2. What type of energy is produced when we burn a piece of wood?

When we burn a piece of wood, the primary form of energy produced is heat energy. However, the combustion process also releases light energy and small amounts of sound energy.

3. How much energy is transferred when we burn a piece of wood?

The amount of energy transferred when we burn a piece of wood varies depending on the specific type and size of the wood, as well as the efficiency of the burning process. However, on average, burning 1 kilogram of wood can produce approximately 16 megajoules of energy.

4. Can we use the energy from burning wood as a sustainable source of energy?

While burning wood can be a renewable source of energy, it is not considered sustainable in the long term. This is because burning wood releases carbon dioxide, a greenhouse gas, into the atmosphere, contributing to climate change. It is important to practice responsible and sustainable forestry practices to ensure the continued availability of wood as a source of energy.

5. How does burning wood compare to other sources of energy?

When compared to other sources of energy such as fossil fuels or nuclear power, burning wood is generally considered to be less efficient and more polluting. However, it can be a useful and renewable source of energy for certain applications, such as heating homes or cooking food.

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