Sorry, although solar panels will provide all of your domestic hot water through the summer months and supply some of your needs during the winter, it certainly won't provide enough heat to power radiators. Most rooms may take 2 to 3 KW to heat and a couple of solar panels won't provide that, also they will only work during the day and not at night when your more likely to require the heat and in peak summer months you will struggle to dump the heat from evacuated tubes which are much more efficient than the flat panels used here in Turkey.