Heating flowing water STREAM with s"STEAM"

[oilgasandwater]

Dear All,

I posted a question a few weeks back about heating water with steam and I got some great input.

BUT, I wanted to know if there is a calculation to find out how much steam needs to be supplied to heat a flowing stream of water.

The idea is to inject steam into a pipe carrying water and heat it up before it enters the experimental set up.

Thanks in advance !

 

[tickle]

Yes - it is called a heat and mass balance

 

[djack77494]

A simple but extremely rough estimate can be made as follows:
It takes 1 btu to heat 1 pound of water by 1 degree F.
Steam releases about 1000 btu for every pound condensed.
So 1 pound of steam can heat up 999 pounds of water by 1 degree F, or it can heat 499.5 pounds of water by 2 degrees F, or ...

More practically, you probably are starting with a given amount of water and a final temperature in mind, and you want to know how much steam it will take to attain the final temperature. Let's say you want to heat up 2000 pounds of water from 40 to 50F. You need 2000 * (50-40) or 20,000 btu to accomplish this. To get 20,000 btu, you will need 20,000/1000 = 20 pounds of steam.