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HaWi Energietechnik shows off its innovative office and warehouse
building
Energy self-sufficiency into the future
Its imposing presence catches the attention from afar. In the middle
of agricultural land that up to now constitutes the new Eggenfelden
industrial area, the modern construction has an almost futuristic effect:
the new HaWi Energietechnik AG operations building. With
this, company founder Hans Wimmer impressively confirms his entrepreneurial
focus on expertise and gives the amazed visitor a
glimpse of the future of building technology.
The newly erected technology and logistics centre with its striking,
elongated Y shape is a unique project as the use of renewable energies
means that it is energy self-sufficient.
That means: the power
of external suppliers can stay in the plug. For the power generation
compliments of the house priority is given to the use of regionally
available biomasses in conjunction with the inexhaustible energy of
the sun and also the use of a natural gas combined heat and power
plant and a solar absorption cooling unit for the air-conditioning of
the building.
Renewable energies in the area of building and energy technology
represent an important topic in our society and play a primary role
in the current political and economic discussions and developments,"
says the CEO Hans Wimmer.
This is not least provided for
by the Directive "Energy Performance of Buildings" in which the EU
demands the integrated approach to buildings and lays down concrete
provisions for the promotion of renewable energies and energy
efficiency. "High energy costs, finite raw materials with rising
prices but also supply insecurity on the side of the consumer have
in addition considerably increased demand for resources-friendly
technology," Wimmer says knowingly.
Thus there is a demand for new systems: the combination of modern
heating technology with renewable energies. As only the use of
economic technologies balanced in themselves will be future-proof.
HaWi Energietechnik as a limited company has been dedicating itself
to the implementation of this requirement for seven years.
Company founder Hans Wimmer has specialised in environmental
technology and in particular photovoltaics since 1995 and constantly
expanded on this know-how. Over and above planning and sales departments, the company today even operates its own development
department for individual mounting systems and generator
connection boxes and also for hybrid energy supply plants.
The company is having sustained success with this. Individual
technical solutions, stable partnerships and distinctive customer
orientation are particular strengths of the company.
In the year
2007 it has been awarded the company prize "Bayerns Best 50" for
it. The jury justified its decision with the fact that the ownermanaged,
medium-sized company has excelled in a particularly exemplary
way because of its vastly expanding turnover and greatly
increasing staff numbers.
Today the company presents itself as the leading specialist for
photovoltaic systems in Europe, experts in alternative heating technology
in the German-speaking area and worldwide in small wind
turbines and off-Grid systems.
Correspondingly large is the innovation power exuded by the new
HaWi building that was occupied in December 2007. Mainly glass,
steel and modern photovoltaic panels were used for the façade.
Thin-film panels were built into six sectors that are connected to
each other via HaWi connection boxes and connected to the distribution
grid via inverters.
5 000 square metres of office, training and exhibition spaces offer
the staff sufficient space that is complemented by equally large logistics
areas. By 2010, 120 people are to service the national and
international market in all questions to do with the area of renewable
energies. For this, alongside the proven wholesale areas for
solar panels and solar components, the company is putting increasing
emphasis on the project management of large solar energy systems
and also the area of alternative heating technology in consultancy,
planning and sales.
These business areas are reflected in the HVACR used in the technology
centre. Thus the outside shell of the building consists of 396
solar panels that deliver a total power of approx. 30 kWp of solar
power. Added to that a 50 KWel natural gas combined heat and
power plant (CHP) was installed. The combined heat and power
plant is heat-led and meets the basic load supply of the heat requirements and also the own power supply in normal and off-grid
operation. To extend the running time of the CHP a 10 000 litre
buffer storage is available (in winter operation 15 000 litres).
"The combination of solar energy and CHP enables an optimum
adaptation of the heat and power supply of the building," explains
Wimmer. Power surpluses are thus fed into the regional grid and reimbursed.
The usable 80 kWtherm rated input power covers the
basic heat requirement of the building.
If it is particularly frosty in winter, peak demands arising can be absorbed
by a 270 kWtherm woodchip heating system that gives additional
ordinary heating. "To design it to be particularly economic, we
have negotiated a "Contracting Model" with a regional fuel supplier
so that we only have to pay for the amount of heat delivered in the
building," says the innovative entrepreneur with pride.
The model can set a precedent as the settlement via heat meter
assures the operator of an optimum fuel quality and at the same
time promotes regional supply.
The woodchip burning plant works
with wood pellets G30 with humidities up to W50 (in accordance
with Austrian standard). The pellets are stored in underground silos
that are transported directly to the burner via automatic conveyors.
For the heating provision for the absorption cooler in summer and in
the transitional period, thermal solar panels are installed on the
storage roof. These ensure the desired cooling in combination with
a 200 square metre large thermal solar energy system on the roof.
For the air-conditioning of the building the water/lithium bromide
pair reduces the heat level fed in from 86 degrees C the water to 9
degrees C. For cooling energy buffering in summer there is a 5000
litre storage unit available. The heat ratio corresponds to a COP
value of 0.75. So summer can come and the people in the HaWi
building will not break out into a sweat when they are imparting their
energy concept to interested people and companies. And once the
warm season has arrived, the grass that frames the "green" energy
company with its future-oriented building complex in Eggenfelden
will certainly be growing luxuriantly these days only with the help of
digital retouching.
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| Das HaWi Technologie- und Logistikzentrum in Eggenfelden |
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| Die Solarthermieanlage auf dem Lagerdach
des Technologie- und
Logistikzentrums |
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| Die Kühlanlage im Keller des Technologie- und Logistikzentrums |
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