What Is the Expansion Ratio of Combusting Butane?

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This information is helpful in designing a spa pool boiler for heating pool water. In summary, the ratio between the inlet area and the exhaust area should be at least 10:1 for the combustion of butane with air.
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nammacdac2010
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Hi

I would like to know how much expansion occurs during combustion when butane burns with air.

The reason that I would like to know this is that I am designing and making a spa pool boiler for heating the pool water. I understand that I have probably not supplied enough information for an exact answer. As I am designing this myself I will allow some "safety margin", so I am not after an answer that is 100% correct.

The bottom line for me is: What is the ratio between the inlet area and the exhaust area?

Thanks
 
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in advance.The expansion ratio of the combustion of butane with air is approximately 10:1, meaning that 10 parts of air are needed to burn 1 part of butane. This means that the exhaust area needs to be at least 10 times larger than the inlet area.
 

FAQ: What Is the Expansion Ratio of Combusting Butane?

What is the expansion of combusting butane?

The expansion of combusting butane refers to the increase in volume of butane gas when it is burned in the presence of oxygen. This expansion is a result of the release of energy in the form of heat, which causes the gas molecules to move faster and spread out, increasing the overall volume.

Why does butane expand when it is combusted?

When butane is combusted, it undergoes a chemical reaction with oxygen, producing carbon dioxide and water vapor. This reaction releases a significant amount of heat, which causes the gas molecules to move faster and spread out, resulting in an expansion of the gas.

How does the expansion of combusting butane affect its surroundings?

The expansion of combusting butane can have several effects on its surroundings. The increase in volume can cause pressure changes, which can be harnessed for various purposes, such as in engines or heating systems. The release of heat can also impact the temperature of the surrounding environment.

Can the expansion of combusting butane be controlled?

Yes, the expansion of combusting butane can be controlled through various means. The rate of combustion can be regulated by adjusting the amount of oxygen present, and the resulting expansion can be harnessed for specific purposes, such as in controlled explosions or heating systems.

What safety precautions should be taken when dealing with the expansion of combusting butane?

When working with combusting butane, it is essential to take proper safety precautions. This includes ensuring proper ventilation to prevent build-up of gas, handling the gas with caution to avoid accidental combustion, and using appropriate protective equipment, such as goggles and gloves.

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