Alternative energy technology is moving apace now and more and more people
are taking advantages in particular of advances in solar energy engineering.
Improved solar panel design has led to greater efficiency and cost effectiveness.
Solar cylinders incorporating a high efficiency heat exchange coil, often
manufactured in finned tube, provide the means to store the heat energy
gained by the solar panels. This solar heat energy can substantially reduce
the demands on traditional heat energy sources (e.g. central heating boilers)
to provide hot water and room heating.
Special combination tanks
Combination tanks are often used where space is at a premium or for ease
of installation, reducing the need for a separate cold water cistern.
Where indirect systems are concerned, however, there is usually still
a need for a header tank to feed and vent the primary circuit. This need
can be fulfilled by incorporating the header tank with the cold cistern
of the combination tank. This is achieved either by inserting a separate
smaller tank in the main cold tank (known colloquially as a 'D' tank combination)
or splitting the main tank in half (known colloquially as a split tank)
In both cases both cold feed tanks have their own cold supply controlled
by a ball cock valve.
Boat cylinders are available in a wide variety of sizes,
both in vertical and horizontal style to meet most eventualities.
Supplied either with a single coil or with twin coils where
two heat sources are available these cylinders are made of
heavy-gauge copper to withstand potentially high operating
pressures. Boat cylinders should be fitted with a pressure