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Cubbs
evening guys. On our condensing oil boiler will turning the pump speed to 1 increase the boilers condensing? That makes it more efficient?
thanks
thanks
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Dew point Is 54 degrees
Where did you get that idea from?Sorry, but the boiler needs a high flow to condense.
Where did you get that idea from?
Condensing starts when the return temperature is at the dew point (approx 54C) and increases as the return temperature lowers. So you get very little condensation at 54C return and much more when the return is 24C.
If you reduce the flow rate the temperature differential will increase at the boiler, so the return temperature will be lower. The only problem is that the rads at the far end of the system may not get hot. But this can normally be corrected by balancing the system.
It depends on the exact composition of the gas.I thought it was 55° as that what most sites say, I am happy to be corrected
Does my post above answer your question?So based upon that statement, what would your design parameters be on a new heating system installation?
That can't be correct when you consider that boiler manufacturers have to state the output with temperatures of 80°/60° and 50°/30°. Some manufacturers also provide data for 40°/30°.Try not to let the return temp drop below 40 or this causes condensing in the primary heat exchanger and therefore shortening its life span, as it is only constructed of mild steel where as secondary hex (condenser) is made of stainless because of the acidity of the condensate.
That can't be correct when you consider that boiler manufacturers have to state the output with temperatures of 80°/60° and 50°/30°. Some manufacturers also provide data for 40°/30°.
Which boiler has a mild steel primary hex and stainless secondary hex?
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