Buffer/Thermal Stores?????

[bobby62]

Could someone please explain whether installing a buffer/thermal store after the boiler would provide a higher heat output.

For instance, if I need 45kW (peak load), would I get away with installing a 25-30kW boiler?

Thanks

 

[dcawkwell]

Yes it can supply a peak burst of power and therefore allow
a smaller boiler to be required overall as the boiler
can create a store of heat ready to go at off peak times.

What needs such a large amount of heat?

But then a ravenheat outputs 42kw at less than the cost of a thermal store. You could buy two! 84kw.

 

[bobby62]

What needs such a large amount of heat?

An 8000sq.ft existing house! What is the rule of thumb for the uplift a thermal store can provide i.e. % of additional kW?

 

[dcawkwell]

What needs such a large amount of heat?

An 8000sq.ft existing house! What is the rule of thumb for the uplift a thermal store can provide i.e. % of additional kW?

None. A thermal store won't provide any uplift. It just evens out
the peak demands. If you needed to heat the place continuously
a thermal store would provide no benefit as it only puts out what you put in.

I would stick in a nice big boiler like the 42kw ravenheat
and see if it heats the place. If not add a second to work in cascade.
Much cheaper and certain than a thermal store.

 

[Agile]

An 8000sq.ft existing house! What is the rule of thumb for the uplift a thermal store can provide i.e. % of additional kW?

How many kW of power do you think that needs?

 

[Biggles..]

42kw ravenheat------- Jesus, that'll be crap. Best fit a decent boiler next to it for when it breaks which should be fairly often.