Product range SolarBloC®
Solar stations
PAW-Dimensioning
Low-Flow 10-20 l / (m
2
x h)
High-Flow 25-40 l / (m
2
x h)
12 l / (m
2
x h) = 0,2 l (m
2
x min)
30 l / (m
2
x h) = 0,5 l (m
2
x min)
SolarBloC® midi Premium
SolarBloC® maxi Premium
SolarBloC® mega
Product range SolarBloC®
The PAW SolarBloCs are used to circulate the solar fluid in the solar circuit
efficiently. Solutions in the dimensions DN 20 to DN 32, offer a broad
application range up to 175 m2 of collector surface. To obtain a maximum
flexibility during system planning, PAW focuses on the two versions Basic and
Premium for its SolarBloCs.
The SolarBloC Basic is an inexpensive entry level version with functional
features. In contrast, the SolarBloC Premium is fully equipped with additional
temperature and flow rate sensors. Individual system requirements, such as
heat quantity measurement and the operating modes high-flow and low-
flow can be realised with the suitable SolarBloC and the optionally integrated
controller.
The SolarBloCs use high-efficiency pumps, which offer an extremely broad
adjustment range. Thus, the optional controller adjusts efficiently the pump
speed to the required flow rates.
Additionally, high-efficiency pumps save more than 50% of electrical driven
energy compared to conventional asynchronous pumps. Furthermore, these
pumps meet the energy efficiency guidelines (EuP / ErP READY) of 2015.
The controller is delivered preset, mounted and prewired to guarantee an
easy adjustment to the real system.
For a safe and quick commissioning, the solar stations SolarBloC are equipped
with pressure relief valves, ball valves as well as with fill and drain valves. The
insulation complies to EnEV
Application range of the solar stations:
Depending on their operating mode, solar thermal systems are divided into
high-flow and low-flow systems.
High-flow-systems operate with 25-40 litres per m2 of collector surface and
hour which corresponds to 0.42-0.67 l / (m2 x min). Low-flow-systems operate
with 10-20 litres per m2 of collector surface and hour which corresponds to
0.17-0.33 l / (m2 x min).
The flow rate which is circulated in the system depends on the operating
mode, on the collector surface as well as on the performance of the heat
exchanger (secondary). The dimensioning of the circulation pump depends
on the flow rate and the pressure drops which occur in the heat exchanger, in
the collector and in the piping system/valves and fittings of the system.
The application ranges/collector surfaces are mentioned in the product
description. The mentioned values refer to a pressure drop of about 3.5 m wc
and the most powerful pump in the system (assumed pressure drops: 1.5 m
wc in the collector, 1.5 m wc in the pipes and 0.5 m wc in the heat exchanger).
A specific flow rate of 0.25 l / (m2 x min) is assumed for low-flow
systems, whereas 0.5 l / (m2 x min) is assumed for high-flow systems.
The values are only a first indication for the dimensioning. It is
always essential to carry out a detailed dimensioning of the system!
290
01/2020 • Printed in Germany
PAW GmbH & Co. KG • 31789 Hameln • Germany • Phone: +49-5151-9856-0 • Fax: +49-5151-9856-98 • info@paw.eu • www.paw.eu
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