The stagnation cooler is the optimum solution for installations that have stagnation problems. The stagnation cooler is an extra long stainless steel pipeline designed as corrugated pipe having a particularly large cooling surface area. It is connected to the flow of the solar station via a special fitting. The expansion tank is connected, other than in customary solar installations, directly to the stagnation cooler at the collector supply. This prevents the overheated solar fluid from being pressed into the storage tank.
The problem
Installations that reach the stagnation state will overheat, resulting in the evaporation of the solar fluid. The emerging pressure presses the hot fluid from the collectors into the pipelines or even all the way to the solar station and the expansion tank. The gaskets and diaphragms are thus thermally stressed which accelerates the ageing process and increasing the maintenance costs.
The solution!
To reduce the adverse effects of stagnation and increasing the service life of the installation, PAW has developed the stagnation cooler. It offers the installer a simple and well-designed solution to get a grip on stagnation problems in solar energy installations.
The fittings of the solar station also benefit from the effect of the stagnation cooler: Any vapour shocks from the collector field are deflected by the connection fitting directly to the stagnation cooler and do not arrive at the station itself.
The functional insulation of the stagnation cooler provides contact protection and results in an additional chimney effect for optimum cooling of the pipeline.
The stagnation cooler is arranged directly behind a FlowCon Basic solar station, which can be ordered separately, and forms a function-optimised unit with the latter.
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