|
MODULE II |
|
|
|
 |
|
MODULE II |
|
|
|
|
|
6. Collector technology
Service technicians should have a very good technical knowledge of the different
collector types available on the market. They should know how all these different
collector types function as well as what their possibilities of use are. Only
equipped with this knowledge they can decide which systems and devices fit the
customer's needs best and which cost-benefit calculations have to be done. For
this reason, collector technology in general as well as the most important collector
types are going to be discussed in detail in the following.
Absorber collectors
The simplest and most affordable collectors are absorber collectors without
cover (also simply called "absorbers"). Their performance depends very strongly
on the outside temperature. With high outside temperatures in the summer they
have a high efficiency. This high efficiency however is rapidly decreasing with
sinking outside temperatures since absorber collectors are not insulated against
low outside temperatures. Absorbers reach work temperatures that e.g. re sufficient
for the heating of water for outdoor swimming pools during the bathing season,
even in Northern European climatic zones. Absorber collectors are made exclusively
of synthetic materials so that the water they are heating can best flow through.
Usually absorbers are supplied in the form of mats, tapes or hoses lying next
to each other. These collector forms make it relatively easy to cover large
areas with them. Temperatures needed for the heating of drinking water or for
the support of room heating systems can not be achieved with absorber collectors.
So, their area of application is primarily limited to this use as swimming pool
water heaters. For these purposes collectors with front cover and insulation
are required. Diagram 15 shows the function of a swimming pool absorber collector.
Diagram 15: Function of a swimming pool absorber collector
| Absorber | = | Absorber collector |
| Steuerung | = | Regulation and control unit |
| Filter | = | Filter |
| Pumpe | = | Pump |
| Schwimmbadabdeckung | = | Swimming pool cover |
| Schwimmbecken | = | Swimming pool |