swimming pool absorber
An ideal application for the use of solar
energy is the heating of outdoor swimming pools during summer. Supply
and demand coincide in this case. The maximum solar
radiation during summer can be used with comparatively low technology.
To reach the optimal heating for pool water, temperatures even below 30º
C (86º F) are good enough. For this task, low-cost swimming pool absorbers
are used. An additional water tank is not necessary as the water of the
pool serves to store the heat, and a pump ensures circulation of the water
through the surface of the absorbers. The solar control system, with temperature
sensors at the water inflow point and at the absorbers, automatically and
economically regulates the operation of the heating system.
| Swimming pool absorber on a roof
near an outdoor pool. Image: MBW.NRW
Swimming pool absorbers are usually black plastic mats or tubes. Unlike
a flat-plate collector
or an evacuated-tube collector,
heat insulation and transparent covers
are not necessary. Because of the low temperatures involved, the temperature
stability requirements are markedly lower than those of solar heating systems
for water heating or backup heating.
ENERGY AND POWER