Robin wrote:
On 04/04/2021 20:40, Tim Lamb wrote:
In message , Theo snip
Water source is best, if you have a lake or river available.

I have a river:-)
I suspect the EA may object to me extracting heat from it. Actually
warmer than spring fed due to upstream sewage treatment.



I don't see why in principle given it's being done up and down the
country by various councils.

https://www.greenmatch.co.uk/heat-pu...urce-heat-pump

"Depending on the type of heat pump, either the water from a river
or small stream is pumped through the heat pump, or a special
refrigerant fluid is pumped through pipes laid in the body of water.

While both have their own advantages, the latter type requires
less maintenance and an easier application process, making it
a cheaper option."

"Environmental Legislation to Keep in Mind

Specific environmental regulations and considerations must be addressed
before installing water source heat pumps. Open-loop systems alter the
temperature of groundwater, while thermal plumes affect hydrochemistry
and bacteriology.

Depending on the type of system you wish to install, licenses may be
required. For example, hydrogeology and thermal properties have to be
investigated, and they require a license to examine groundwater and
an abstraction license (permission of diverting surface or groundwater)
which can be obtained from the Environment Authority."

That last paragraph, can be a bitch.

Paul