"Tim+" wrote in message
...
Dave Plowman (News) wrote:
In article ,
Ray wrote:


"Dave Plowman (News)" wrote in message
...
In article l.net,
Dave Liquorice wrote:
The use of domestic gas is to be phased out. It will all go to power
stations. Houses will have heat pumps.

Wonder if that actually reduces the amount of fossil based CO2
released?

Each conversion has losses. What COP do the heat pumps *have* to
achieve to overcome the losses in the power station and grid compared
to say an 80% effcient domestic boiler?

Have you considered how many UK homes are suitable for a heat pump
system?

They all are with air sourced heat pumps.

Ah - right. So no need to bury pipes in the ground. Wonder what the snag
is with that?


Low energy density so you presumably have to move a lot of air to extract
enough heat in cold weather (which must reduce efficiency).

That isnt the problem, the problem with air sourced
is that the external collector can ice up, particularly
if it isnt sized right.