rms4067
New Member
First, I am researching for heating water for concrete. I have a chart that tells me for my 15,000 gallon tank with a heater on it. My minimum make-up is 47 GPM. My Recovery rate for a 100 deg rise is 2,820 GPH. The next column in the chart says available gallons (at a 100 deg rise) and lists a value 17,256 for the first hour.
I think the available gallons column is also called the "First Hour Rating" which is calculated by taking my tank capacity (multiplying it by .8 then adding my recovery rate). My chart however has a formula which is (Tank Capacity+.8*Recovery Rate). So are First Hour Rating and the Available gallons the same thing? OR do they mean different things, and have different formulas.
This is my understanding of what the data is telling me. The recovery rate tells me that in 1 hour, 2820 gallons of water will be heated 100 degrees.
The First Hour Rating or Available Gallons is a little more complex. As I understand it, you start with a fully heated water tank, then use 20% of it (which is why I multiply by .8), and then I add my recovery (2820) for some unknown reason.
What does the minimum make-up mean? It sounds stupid, but I have no idea what it means. I know it's dependent on the heater. But that's about the extent of my understanding.
I need to answer this question.
How long will it take a 15,000 gallon tank to heat from 50 degrees to 150 degrees?
I think the available gallons column is also called the "First Hour Rating" which is calculated by taking my tank capacity (multiplying it by .8 then adding my recovery rate). My chart however has a formula which is (Tank Capacity+.8*Recovery Rate). So are First Hour Rating and the Available gallons the same thing? OR do they mean different things, and have different formulas.
This is my understanding of what the data is telling me. The recovery rate tells me that in 1 hour, 2820 gallons of water will be heated 100 degrees.
The First Hour Rating or Available Gallons is a little more complex. As I understand it, you start with a fully heated water tank, then use 20% of it (which is why I multiply by .8), and then I add my recovery (2820) for some unknown reason.
What does the minimum make-up mean? It sounds stupid, but I have no idea what it means. I know it's dependent on the heater. But that's about the extent of my understanding.
I need to answer this question.
How long will it take a 15,000 gallon tank to heat from 50 degrees to 150 degrees?