Mon conseil: Chaque jour avec vos capacités, faîtes une bonne action physique réelle concréte dans le bon sens pour l'Homme et le soir, faîtes votre bilan et améliorez le.
Solar Resistance
Bill of materials: ball bearing disk, 3 cylinders 3/8'' diameter copper pipes (welded) - 160' long bended in rolls - hollow aluminium rectangular bars, central I beam, aluminium , glass cylinder, barbecue black paint, Heliotrack 2 axis solar tracker, 6 motors (12 volts). The collector does not move (fixed focus).
Quartz (UV grade fused silica glass) lets Ultraviolet passes trough => Energy is collected even in cloudy skies (no yellow sun). If your windows were made of transparent quartz you will probably gain naturally 4-5 Celcius in winter. Also, internal reflection must be added inside the tube (mirrors or inox plate or
reflective film or polished aluminium ). Besides, in order to loose weight the reflector must be made of fine polished aluminium sheets attached to a fine flexible plywood.
A solar concentrator achieves high temperatures. Steam induces high pressure and explosion, so a solar concentrator should be used to heat corn oil (smoke point 232C and freezing point around -20C).
For example, make a vertical heat exchanger with aluminium cooking baskets. A polystyren container is surrounded with salt, temperature drops from 220 C to 40 C in 5 minutes. The storage system is made of an insulated container filled up with regular salt (Glauber & fine is better). We repeat this operation to store heat into the salt. A black tube preheats the tap water that goes into the tank water heater.
Around the container a vaccuum must be done, with a water jet vaccuum pump.
