Willaupuis wrote:can we do something with slates?
I had seen somewhere a system based on the "swimming pool roofs" of certain traditional constructions of the magrheb. The principle is very simple but not necessarily easy to implement. It uses the conductivity and thermal inertia of water.
This is roughly how we do:
Under the slates, make a coil of pipes (painted black to store even more the heat that runs under the surface of the slates).
Between this coil and the slates, provide an insulator removable (for example, a roll of thin reflective multi-layer insulation that is wound / unwound between the tiles and the coil on demand.
this coil extends either to an exchanger or to a low temperature heating floor.
one (or more) pump (s) ensure the circulation of water in the circuit.
The system works in 2 modes:
"Heating" mode:
- The day : the insulation is rolled up, the pump is on -> heating of the water by the sun which diffuses throughout the circuit.
The night : the insulation is unwound between the slates and the coil and the pump is stopped -> preservation of water calories.
"Air conditioning" mode: - The day : the insulation is unrolled between the slates and the coil and the pump is stopped -> the calories do not enter the house.
The night : the insulation is rolled up, the pump is on -> the calories in the house are evacuated to the coil.
As you can see, the principle is simple but the complexity of implementation as well as the risk of leaks mean that the question of potential gain must be seriously asked before considering the work ...
