"John Rumm" wrote in message
o.uk...
On 27/01/2020 07:33, harry wrote:
On Monday, 27 January 2020 00:19:11 UTC, John Rumm wrote:
On 21/01/2020 19:04, Tim+ wrote:
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).

Make you also wonder what it would be like living in a densely populated
area, where every house has a air sourced heat pump, each shifting and
*cooling* vast quantities of damp winter air. Could be a tad noisy, not
to mention you come out in the morning and find your electric car frozen
to the road :-))

The heat abstracted by a domestic heat pump is trivial.

I would expect it to be close to the heat used keeping the house warm...
so at least 30 kWh / day for much Victorian housing stock.

Yes, but that isnt going to stick electric cars to the road.