Test facility in Holmestrand
Look at the report from NRK: www.nrk.no/vestfold/ror-i-roret-1.1190398
In 2014, together with Holmestrand municipality with Bodo Havelberg we built a very nice full scale test facility. We are grateful for all the help and generosity that Holmestrand municipality contributed to the project. They allowed us to integrate the facility into their holding tanks. They also covered the additional costs associated with the work. This facility has been very important to us for testing and as a viewing facility for other interested parties. It was an important factor when Drammen Municipality chose to go for our solution in Maria Feghts St.
The plant is in steep terrain and there is a height difference from the test tank and out to the final drainage point of about 11m d.v.s. We can test here with full vacuum, if desired.
The facility we are connected to, consists of 2 large concrete pipes, with diameter Ø = 1.6m and 38m long.
The plant is in steep terrain and there is a height difference from the test tank and out to the final drainage point of about 11m d.v.s. We can test here with full vacuum, if desired.
The facility we are connected to, consists of 2 large concrete pipes, with diameter Ø = 1.6m and 38m long.
Fordrøyningsmagasinene, kummene og ledningsstrekket
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Here is the first Aiwell Waters full-flow tank. It has greatly improved after we received help from NTNU Professor Sveinung Sægrov and his student.
The result is that at Maria Feghts St. we have a completely different tank. We are very pleased with the cooperation that we have received from the professor which has been very useful to us. Now we are working on a new drainage project with NTNU, COWI and Horten municipality. We are also working with VIVA Municipality for a further development of the system. 
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Here the test tank is dug down, in the small box in front of the tank the water flow meter is mounted.
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Here we see the cabinet with electronic controls where we are directly connected from our office. This allows us to do a lot of tests without having to be on the location.
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Here we see the test chamber where we control the engine valve with an Aiwell 3000 control unit and sensors located in the facility. From our test tank to the final drainage point, the distance is approximately 11 m, long enough to make sure that we can achieve full vacuum, if desired. When performing tests, the valve must be fitted to the outlet pipe.
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Looking forward, we see two areas where our technique will be of great use. 1) Reducing the amount of water in drainage pipes by using by trenchless drilling combined with our pressure solution. We have done in Maria Feghts St. There we have a big enough recipient to take away all the drainage water that could come. 2) Where the recipient has a limited capacity, we can regulate the emissions according to the recipient's capacity, thus obtaining optimal utilization of the entire drainage infrastructure..
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Here a journalist from NRK interviews Alf Harlem from the University in south Norway. We are very pleased to have had students join us in this project. They did the research and experimentation, preparing us for the project. Read more under the HSN Student thesis.
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