If a boiler is range rated. What information is require to work out the heat output of the appliance on a given installation?
Heat input rating as opposed to output rating.
So how you gonna calculate heat OUTPUT then Dickie?Oh!!..............Here's trouble!!
Steely, get your readers on, they're on the top of your head!! The OP stated output.
I have found, be it a simple fridge one is brewing beer in, or a whole house, and calculations are just a start point, to find size of heater to keep my beer as correct temperature I calculated I would need around 20W, then I set it all up with a energy meter, and in fact 5W was ample.
My son tells me the boiler in my mothers house is too small, however it never seems to get cold, so it would seem the heating guy who fitted it knew his stuff, as an electrician I can have a good guess as to cable size required so volt drop is not a problem, because I have measured the results so many times, I can work it all out, but rarely need to. I am sure it is the same for heating engineers.
My job was to heat things raising the temperature by 100°C per hour, then holding at 700°C for an hour, then cool at 50°C per hour, forget the calculations, one can never include all the drafts and other factors, I used experience, after setting up stress relief on 50 pipes you got a feel for what was required.
The only way to size a boiler spot on is to monitor the old boiler for a couple of years to see what that house needs. There is always some thing which you had not allowed for, use of washer drier, use of oven, adding dish washer, having servers running, the list goes on. There is just experience.
Really???I have found, be it a simple fridge one is brewing beer in, or a whole house, and calculations are just a start point, to find size of heater to keep my beer as correct temperature I calculated I would need around 20W, then I set it all up with a energy meter, and in fact 5W was ample.
My son tells me the boiler in my mothers house is too small, however it never seems to get cold, so it would seem the heating guy who fitted it knew his stuff, as an electrician I can have a good guess as to cable size required so volt drop is not a problem, because I have measured the results so many times, I can work it all out, but rarely need to. I am sure it is the same for heating engineers.
My job was to heat things raising the temperature by 100°C per hour, then holding at 700°C for an hour, then cool at 50°C per hour, forget the calculations, one can never include all the drafts and other factors, I used experience, after setting up stress relief on 50 pipes you got a feel for what was required.
The only way to size a boiler spot on is to monitor the old boiler for a couple of years to see what that house needs. There is always some thing which you had not allowed for, use of washer drier, use of oven, adding dish washer, having servers running, the list goes on. There is just experience.
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