On Jul 15, 12:49*pm, Tim Lamb wrote:
Yes. I do know there are umpteen thousand hits on the web!

How many kW would be needed to space heat 200m2 of single storey offices
meeting current building regs. but only 4 to 5m wide (lots of outside
wall and roof)?

How much useful heat could I extract from pumped groundwater within the
current *no licence* abstraction limit of 20m3/day?

regards


R measures insulation, U measures conductance
U value is thermal conductance in W/m^2k
(watts, metres square, kelvin)

R value = 1/ U value


Normally with GSH one doesn't abstract any water, one just takes the
heat from the water.


NT