Re: Modern Steam Locomotives -- Spearfish Lake Tales

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Subject: Re: Modern Steam Locomotives

Author:
K Pelle aka dotB

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Date Posted: 19:09:14 08/26/12 Sun
In reply to: Lew 's message, "Re: Modern Steam Locomotives" on 17:07:48 08/26/12 Sun

Unfortunately condensing locomotives usually managed to do any cooling of the exhaust steam by running the condenser pipes through the water tanks. That would soon heat the water in the tanks to near boiling point, at which time the injectors on the engine would not function so they had to use steam powered pumps in order to refill the boilers. Not only that, but there are many other problems which crept into the situation, so often they lost any benefit in travel between watering points. All in all condensing locomotives were seldom a viable solution to the problem - instead most railroads tried to use the largest possible water tank they could and suffered with the inconvenience of frequent water stops.

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[> [> [> [> [> [> Subject: Re: Modern Steam Locomotives

Author:
Lew
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Date Posted: 19:49:48 08/26/12 Sun

>Unfortunately condensing locomotives usually managed
>to do any cooling of the exhaust steam by running the
>condenser pipes through the water tanks. That would
>soon heat the water in the tanks to near boiling
>point, at which time the injectors on the engine would
>not function so they had to use steam powered pumps in
>order to refill the boilers. Not only that, but there
>are many other problems which crept into the
>situation, so often they lost any benefit in travel
>between watering points. All in all condensing
>locomotives were seldom a viable solution to the
>problem - instead most railroads tried to use the
>largest possible water tank they could and suffered
>with the inconvenience of frequent water stops.

Or else pull extra water tanks (N&W called them 'Thermos Bottles')to extend the range between water stops.

Lew

[> [> [> [> [> [> [> Subject: Re: Modern Steam Locomotives

Author:
K Pelle aka dotB
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Date Posted: 21:17:07 08/26/12 Sun

>>Unfortunately most railroads tried to use the
>>largest possible water tank they could and suffered
>>with the inconvenience of frequent water stops.
>
>Or else pull extra water tanks (N&W called them
>'Thermos Bottles')to extend the range between water
>stops.
>
>Lew

And the operating department got belly ached at because that extra tank of water was 'dead' weight, bringing no revenue to the railroad - just one more loss of profit that the financial department hated.

kp