The rad has a mechanical TRV. The room has a wood burning stove that is used occasionaly and so the TRV sometimes needs to shut off completely. The problem is that as the valve reaches the "almost completely closed" stage the flow through the valve is particularly noisy and it stays in that...
I have a radiator which is noisy when the TRV is in the partially closed state. Do electronic TRVs switch directly from open to completely closed or do they have a partially closed state?
Thanks
Tony
Bernard - you have grasped my point - ignore the noise! ;)
Methane + Oxygen -> Water Vapour + Carbon Dioxide
If all the Water Vapour condenses in the boiler, then the boiler is working as efficiently as it can. (Presumably the manufacturer quoted efficiency).
As you say, manufacturers may...
Anyway, back to the question, which was:
Is there an established way of calculating the real world efficiency of a condensing boiler by measuring the condensate output and the gas input?
Please correct me if I'm wrong, but it would appear that the more efficiently the boiler is working, the more condensate will be produced per unit of gas.
Is there an established way of calculating the real world efficiency of a condensing boiler by measuring the condensate output and the gas...
I am going to put down a 3m x 3m x 0.1m slab as a base for a garden shed. The shed will be mostly wood so not much load. I've got some wire stock fencing rather like this:
I was thinking of using it to reinforce the concrete. Will this work or could it even weaken the slab. And before...
I have a retaining wall to which I want to bolt fence posts. The fence posts are 100mm square. I can't find any projecting expansion bolts long enough to fix the posts.
Any ideas?
Thanks
Tony
A nice man from British Gas serviced my combi-boiler the other day and told me I needed a pressure vessel fitting on the water supply to my house.
He explained that when I turn off the hot tap, the hot boiler would cause the water to expand and thus increase the pressure in the cold water...