Willis Heating System

[SUNRAY]

Thanks. That's the sort of thing I mean.

I'm more accustomed to 4" pipework though.

 

[JohnW2]

Who said it would?

Well, for starters (assuming I have correctly understood what they have been writing) ...

..... Provided the water coming in at the bottom will keep the thermostat below the level its set at it will keep heating the water. It should work no matter what the height of the element in the Willis is in relation to the tank ....

.... The Willis is also able to heat all of the water in the main cylinder down to where the Willis cold connection joins the main cylinder at the bottom.

Just to confuse the situation further the heat source may be higher than the storage vessel.

The Willis one assumes can heat whole tank .....

It will heat it, to where the base of the Willis connects to the main cylinder - which can be much lower that the standard immersion heater reach, in the usual cylinder.

Let's not forget that a heat source in a tank of water can and will heat the entire tank eventually ...

.... The Willis enables a similar size of main cylinder, to store much more water, heated to the desired temperature, than does a normal immersion heater system.

(I'm not sure I fully understand the last one of those!)

So ... do you agree with 'them' or with me?

 

[ericmark]

I see nothing wrong with any of the statements. The side "boiler" we hoped it did not boil the water, on the Aga stove, was piped the same way as Willis. Today we use a hot coil, and the water in the boiler is not the same as water behind the hot tap, but in 1954 when parents house was built it was.

But I can't remember how long from lighting the fire it took to get hot water at the taps.

 

[SUNRAY]

I see nothing wrong with any of the statements. The side "boiler" we hoped it did not boil the water, on the Aga stove, was piped the same way as Willis. Today we use a hot coil, and the water in the boiler is not the same as water behind the hot tap, but in 1954 when parents house was built it was.

But I can't remember how long from lighting the fire it took to get hot water at the taps.

The solid fuel Agas were renowned for boiling the water, right up as far as the cistern in the loft, the problem occurred when more than one person (or inexperienced) used it. Do they still specify GI cylinders & cisterns?

More than once I recall my grandmother pouring water into the fire.

 

[JohnW2]

I see nothing wrong with any of the statements.

So, to be clear, are you saying that you believe that the entire contents of the cylinder (right down to the bottom) will get heated to something approaching 'target temp' by an immersion fairly close to the top (or, indeed, 'half way up') of the cylinder or by a Willis heater at the same height from the bottom of the cylinder?

 

[ericmark]

yes

 

[JohnW2]

yes

Ah! Thanks for confirming.

EFLI (or anyone), can you help me resolve this confusion?