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.
Several houses near me have them, they are virtually silent.
Why would your car freeze to the road when both tarmac and rubber are good insulators?