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  • These radiators give out approx twice the heat output for the same water temperature, by having a much larger surface area, so can give out useful amounts of heat at 30 º C which is approx 50% of what most heating systems are set to.
  • Because they work at 30º C we should be able to get most of the energy required from the solar system each day, except when it is very cold or we have a number of days without solar radiation.