Do trains release smoke?

The chimney (smokestack or stack in American and Canadian English) is the part of a steam locomotive through which smoke leaves the boiler. As well, steam locomotive exhaust systems typically vent cylinder steam exhaust through the chimney, to enhance the draught through the boiler.



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The chimney (smokestack or stack in American and Canadian English) is the part of a steam locomotive through which smoke leaves the boiler. As well, steam locomotive exhaust systems typically vent cylinder steam exhaust through the chimney, to enhance the draught through the boiler.

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Spent steam is released from the cylinders through the blast pipe below the stack. This arrangement produces a reduction in pressure in the smokebox which draws the firebox gases through the boiler tubes. The harder the locomotive works,the more gas is drawn through the tubes, generating more steam.

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Trains make fresh air break stops about every 4 hours where passengers can get off and smoke. These stops last about 15 minutes and provide enough time to smoke and stretch your legs.

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Modern trains recycle the waste water to use again for flushing.

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While standing on a train platform, you've probably caught a wiff of an odd burnt odor wafting up from under the train. That smell is the trains break pads girding and producing microscopic dust particles. Just like your car, a train uses brake pads to slow itself.

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Compared to flying, using the train emits on average six times less GHG emissions.

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Greenhouse gas (GHG) emissions are directly related to fuel consumption. According to EPA data, freight railroads account for just 0.5% of total U.S. GHG emissions and just 1.7% of transportation-related GHG emissions. Moving freight by rail instead of truck lowers GHG emissions by up to 75%, on average.

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However, as an energy researcher, my decision was motivated by the fact that trains, whether for cargo or passengers, pollute much less than airplanes, sometimes by as much as 73%, and they are more easily electrified than planes.

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