Steam Humidification

Rick_Dover_NJ

Just wondering if there is a chart or something that will tell me about how many pounds per hour of steam can be delivered through different size pipes with a low pressure boiler at 11 psi. I'm interested mostly in 3/4 inch pipe used for humidification in an air handler.



Thanks

Brad White

11 psi?

That seems awfully high a pressure for humidification, it should run on ounces. What kind of dispersion tubes do you have and what is the humidification load?  My charts indicate hundreds of lbs. per hour. Remember, your pressure drop has to be nearly 11 psi because your terminal pressure is nearly zero.



A typical older house might have a humidification load of about 5 to 7 pph. I would tend tin humidify with a light hand especially in an older structure.



Maybe not directed to your question, but I see you getting into some trouble with what I see you contemplating.