ENERGY BY NATURE
7
DIRECT EXCHANGE
RADIASOL is an integrated (collector-storage tank) system that directly transfers the solar radiation to
the water contained within it.
It contains less water than traditional systems with storage tank but the sun heats the three masses of the
elements that make it up (double-glazed panel, radiator’s steel body and the water inside) employing
the thermal inertia of the mass.
Benefits:
• No loss of energy during transfer from the collector.
• Maximum energy efficiency not only in summer but in all seasons of the year.
• Reduced area of absorption to the benefit of system aesthetics and simplicity.
• No maintenance needed.
TRADITIONAL SYSTEMS
In conventional systems (forced circulation, natural circulation or vacuum) the heat exchange between
solar energy and water takes place through two circuits (primary and secondary circuit).
In such systems normally 2-3 litres of water and glycol contained in the collector absorb solar energy
and transfer it to the 150-200 litres (or more) in the storage tanks.
During the transfer from the primary circuit to the secondary circuit a substantial share of the energy is
dispersed.
Collector containing water and glycol
RADIASOL SYSTEM
The sun directly heats the water inside the radiator taking
considerably less time and using all of the available solar
radiation.
Domestic water
Transfer to storage tank
Domestic water
