Can I use three different types of heating sytems through the same sytem?

A normal heating system has one hot water tank with one coil inside for heating the water, at the moment I have an old burner linked to a back boiler on a coal fire so I shouldn't see y you couldn't do this, you may want to see if you can get a hot water tank with a dual coil for heating the water . Because you wouldn't want the hot water from the wood burner going through the solar panel if its cold outside etc because this would give a reverse effect. But you may be able to use the solar option or the geothermal on its own just to save some energy if your cold water was at 19degC and you had to heat it to 60 for a bath shower etc it uses x amount of energy, but if you hooked up to geothermal or solar the ambient temp may be raised to around 30degC there fore saving you energy on your primary heating source.

More.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.