Renewables-2017

Method to prolong the OSC lifetime and its economics Author: David Judbarovski, principle inventor, retired engineer, Israel judbarovski@gmail.com   Short CV: https://www.linkedin.com/in/david-judbarovski-1390944a/ Last articles: http://judbarovski.blogspot.be Archive since 2006 yr.: http://judbarovski.livejournal.com   It is known, that the OSC-s (organic solar cells, polymer solar cells) degrades quite quickly (up to 2-3 years) at natural bright insolation and have quite low energy efficiency (up to 7-10%). It is known too, that the smaller OSC – panel, the thinner and cheaper in cube its cost, while the OSC made by roll-to-roll technologies can be 100-1000 cheaper than Si-PV, being now about USD 0.5 per watt, or USD 500.0/kW. I can offer to shield the OSC by a thin cover to diminish twice the insolation and can suppose it can triply increase the OSC life time up to 7 years and increase its energy efficiency up to 10%, while 0.33 mm steel support wou...

Method to prolong the OSC lifetime and its economics Author: David Judbarovski, principle inventor, retired engineer, Israel judbarovski@gmail.com   Short CV: https://www.linkedin.com/in/david-judbarovski-1390944a/ Last articles: http://judbarovski.blogspot.be Archive since 2006 yr.: http://judbarovski.livejournal.com  It is known, that the OSC-s (organic solar cells, polymer solar cells) degrades quite quickly (up to 2-3 years) at natural bright insolation and have quite low energy efficiency (up to 7-10%). It is known too, that the smaller OSC – panel, the thinner and cheaper in cube its cost, while the OSC made by roll-on-roll technologies can be 100-1000 cheaper than Si-PV, being now about USD 0.5 per watt, or USD 500.0/kW. I can offer to shield the OSC by a thin cover to diminish twice the insolation and can suppose it can triply increase the OSC life time up to 7 years and increase its energy efficiency up to 10%, while 0.25 mm steel support woul...

Simple control device for safety of hydrogen vehicles   Author: David Judbarovski, principle inventor, retired engineer, Israel judbarovski@gmail.com   Short CV: https://www.linkedin.com/in/david-judbarovski-1390944a/ Last articles: http://judbarovski.blogspot.be Archive since 2006 yr.: http://judbarovski.livejournal.com   A very simple device can identify reliably even a very small leakage of hydrogen from a hydrogen balloon and prevent the formation of explosive mix with the air. It is a vessel is slightly bigger than the hydrogen balloon together with fuel cell, and the both sank inside the vessel. The said vessel is filled by the water and a closed thin tube with the air is on the top of the vessel. In a case of the hydrogen leakage the air pressure would grow inside the said thin tube, and it can serve as a control device of the hydrogen leakage.

Breakthrough high-speed HPV (ski treadmill with storage) [3818]- 12.01.2018 Author: David Judbarovski, principle inventor, retired engineer, Israel judbarovski@gmail.com   Short CV: https://www.linkedin.com/in/david-judbarovski-1390944a/ Most fresh archive: http://judbarovski.blogspot.be Archive since 2006 yr.: http://judbarovski.livejournal.com It is a new kind of HPV (human powered vehicle) with transition of ski treadmill to power a generator and bike-type wheels. An excellent aerodynamic shield can be used without designing problem. A pilot power is about 430 kcal-h ordinary in that case for a long time. If 50% of its energy being stored by a small battery and periodically used for travelling, and a pilot can relax of 50% of the route time, the average speed is about 45 km/h, even if a rugged terrain and 25 kg cargo.   Because a human daily energy for a long work being about 3500 kcal ordinary, it is enough for about 14 hours of the route of 630 km long...