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Questions and answers NEUHÄUSER WindTec:

Technology

  1. Which power levels are NWT wind energy systems available in?
  2. At what height need NWT wind energy converters be installed?
  3. In what ways can I exploit the generated power?
  4. How can surplus energy be utilised when there is no local grid?
  5. How can I bridge times with low or no wind and still be reliably power supplied in an autarkic power situation?
  6. Where and out of which material are NWT wind energy converters made?
  7. How about service and maintenance?


Operating efficiency

  1. What performance output can be expected from NWT wind energy converters?
  2. 0 false 21 18 pt 18 pt 0 0 false false false What is the amortization rate of a NWT wind energy converter ?
  3. 0 false 21 18 pt 18 pt 0 0 false false false Which feed-in tariff can be expected ?
  4. How do the costs accumulate for each wind energy converter?
  5. What is the converters economic lifespand?
  6. What is the NWT wind energy converters warranty period?
  7. Why should I decide in favour of a wind energy rather than a solar energy converter?


Conditions of installation site

  1. How do I know whether my site is suitable for wind power conversion?
  2. Where on site and how far way from the supplied buildings should the NWT wind energy converters be erected? 
  3. Are NWT wind power converters suitable for extreme weather conditions as well?
  4. Do I have to adhere to a minimum distance in relation to neighbouring areas?
  5. Do I need a building permit for installing a wind energy converter?
  6. Does NWT  deliver converters abroad?

 

 

 

Technology
   
Which power levels are NWT wind energy systems available in?
NWT – H-rotor wind energy converters are available as small wind energy turbines in the power levels 1 kW, 5 kW, 10 kW, 20 kW and 40 kW.


At what height need NWT wind energy converters be installed?
Generally speaking: the higher the mounting, the better the power yield. Together we will discuss  your individual, environmental parameters. Subsequently, we will recommend the required mounting height, taking into consideration the wind conditions and the heights of surrounding buildings, trees and other potential obstructions.
Principally, we will then have to decide whether to affix the H-rotor to the roof or on a pole, depending on the buildings structures and utilisations. The more detailed information you have when contacting us, the more precise we can be in our initial estimation.

In what ways can I exploit the generated power?
You can utilise the generated wind power either for your personal needs or feed it into your local power grid. The self supply is managed via a direct feed-in to the power terminal / power port of your home. If applicable, surplus power that you do not need yourself can also be fed into the power grid via an integrated, net-parallel system.
   
How can surplus energy be utilised when there is no local grid?
Surplus energy can as well be utilised for the heating of water, through battery storage or through the storage in heat aggregates parallel to your regular heating system. We will discuss individually which storage possibility is the best option for your specific circumstances.

How can I bridge times with low or no wind and still be reliably power supplied in an autarkic power situation?
In areas with high levels of sun exposure you could use one of our hybrid NWT wind energy systems, which are already equipped with photo voltaic option. In addition or alternatively you could resort to using a diesel generator.

Where and out of which material are NWT wind energy converters made?
You will find the precise answers to these questions for each energy converter respectively in our data sheets. (Link einfügen!) As a matter of principle we only employ extremely robust and low maintenance material that has undergone longstanding tests on our own premises. The components are mostly produced in our own manufacturing plant in Lünen. This way, spare parts are swiftly replaceable and we can also manufacture tailor-made parts according to costumer requirements.

How about service and maintenance?
NWT wind energy converters are very low-maintenance. Nonetheless, we recommend a yearly upkeep. This can be serviced by our staff or by yourself as long as we have been instructed you respectively beforehand. The maintenance encompasses the oiling of all bearings, a controlling of all screw joints as well as of the foundation and the anchorage. Respective maintenance schedules and operating manuals are included in the delivery of our wind energy converters.


Operating efficiency   
   
What performance output can be expected from NWT wind energy converters?
The power rating of each converter is listed in our data sheets. (Link einfügen). These ratings can of course only be approximate. The actual power output is dependent on the wind condition and the installation site.
   
What is the amortization rate of a NWT wind energy converter?
There is no standardized answer to this question, for the answer depends on the conditions found on site such as the over all costs of installation, the wind capacity, the grade of network supply and the energy price. If you provide us with the necessary information, we  can calculate a first estimate concerning the converters’ profitability.

Which feed-in tariff can be expected?
The feed-in tariff is regulated by EEG law. Currently it runs at 9,2 Cent in the first five years of operation.

How do the costs accumulate for each wind energy converter? 
On top of the converter price you will have to calculate assembly costs including cranes, electricians, cabling and foundation as well as the building permit costs. We will of course provide you with a binding cost estimate while taking your specific parameters into consideration.

What is the converters economic lifespan?
All NWT wind energy converters are built to run a minimum of twenty years.

What is the NWT wind energy converters warranty period?
2 years.

Why should I decide in favour of a wind energy rather than a solar energy converter?
To start off with, this does not necessarily have to be an either/or decision. All NWT wind energy converters can very well be combined with solar energy solutions to result in a hybrid solution.
If you intend to buy a converter for your own use, a solar energy converter just does not make that much sense economically. Also, wind energy converters do have higher overall power output than solar energy converters, so that the amortisation times are generally shorter – even with subsidies not yet considered and under sub-optimal wind conditions.




Conditions of installation site

How do I know whether my site is suitable for wind power conversion?
We will estimate your site conditions upon our first preliminary consultation. After that we will work together with a team of experts who will be able to perform a precise wind condition analysis at your site. The decisive factors are generally the overall wind situation and any obstacle that may obstruct the free wind flow on site, such as tall trees, buildings or hills. Our tip: ask your local meteorologists for the wind data of your area.

Where on site and how far way from the supplied buildings should the NWT wind energy converters be erected?
Depending on your roof structure you may install the converter directly on top of your building. All other parameters are dependent on the on-site conditions and the cable situation. We are happy to advise you on building a foundation, necessary distances to adjourning sites, wind conditions and all other site dependent factors.
  
Are NWT wind power converters suitable for extreme weather conditions as well?
Our converters are very weather resistant.  They effortlessly endure weather and climate fluctuations between +40°C and -40°C. Our converter components are fitted for installation in areas with high saline satiation such as coastal sites. Due to their extremely durable manufacturing and the reduction of sensitive components, our wind converters  can operate in areas with high wind velocity and a high air impurity ratio. In times of extremely high wind velocity the converters decelerate themselves.

Do I have to adhere to a minimum distance in relation to neighbouring areas?
Yes, there has to be a minimum distance, except if your neighbour explicitly agrees to a closer installation. As the NWT wind power converters lack a lot of the disadvantages of horizontal wind converters this is often less of a problem than it may seem. In all other cases the legally prescribed distance is calculated considering the overall height of the converter. Taken into consideration that NWT converters run without gear and very silently, there are practically no disturbances caused either by sound or vibration.

Do I need a building permit for installing a wind energy converter?
This varies from country to country and commune to commune. In Germany you will be required to apply for a permit in nearly every case. If you are installing a small wind converter for your personal energy supply  the  permit procedures are somewhat simplified though. For farmers and forest managers gaining permits is rather easy. The same counts for businesses as long as there is no disturbance of neighbouring sites. We are glad to be of any help concerning all questions related to building permits and are happy to supply you with the necessary information material. Even if your building permit is not granted you may still file an appeal. Please do not hesitate to contact us in this case as well.

Does NWT  deliver converters abroad?
Absolutely. Please contact us with your enquiry and we will inform you  about our distributing partners in your country. If there is none yet, we will organise transport and installation via our head office in Germany.

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