Category Archives: Renewable Energy

Stirling in Action

Our partner engineer in Pyongyang, is working to make a simple utilization of the Stirling engine possible for North Korean homes.

Now it is our task to provide North Korea with expertise on the „Stirling“. We are planning a workshop in Pyongyang. I will travel to Pyongyang in the spring for the preparation and discussion of the project progress and for a first hand impression of the Stirling engines developed by the Non-Conventional Energy Development Center.

I also hope to send another container with extra material to be used for training purposes.

Perseverance Is Worth It

On 28th December 2014, I finally received an e-mail from Pyongyang that I had long been waiting for. Our chief wind engineer of the Alternative Energy Center, reported the following: “On 18th December we received all the material for the wind turbine that you ordered and organized for us and are extremely thankful!” But the story behind this short note began a year and a half earlier.

During a summer thunderstorm in Samhun our first self-constructed 2000-watt wind turbine was struck by lightning, damaging the generator. The farm manager and his team tried to repair the generator but had to succumb to the fact that this was not doable on the 15 m high tower of the wind turbine. They had to demount the damaged generator and transport it to the repair shop in the valley. Unfortunately, the generator fell to the ground, which broke the permanent magnets. The Alternative Energy Center asked us to order a backup generator from the manufacturer in Inner Mongolia, China. No sooner said than done, I ordered two generators while I was at it. Two months later the new generators were ready to be delivered. And then the long saga began: For months nothing happened with the first export agency because it was not clear if there were any export regulations from China that would forbid the import of wind generators to North Korea. Nothing came of the efforts of the Alternative Energy Center to drive to the border and pick up the two 35-kg generators to reduce the extremely high import costs. Winter came, then spring and summer again. During our last visit to Pyongyang in June 2014 we could finally clarify some open questions and figure out what was just rumor and what the actual export and import obstacles were. I devoted myself to the problem with new motivation and full of energy because another wind turbine (1kW) was promised for the new wind test field. Quite soon I found another supplier and looked for an importer myself. Thanks to the help of a friend this worked out and finally all the material, the generators and the tower were delivered to the border in Dandong, China. Shortly thereafter though, in November 2014, the border was closed due to Ebola restrictions and everything was up in the air again. All the more exciting was the message shortly before the New Year that everything had arrived at the Alternative Energy Center. Mr. Jang assured us: “We are preparing the installation of the wind turbines and hope to spread the knowledge of wind power in the rest of the country. I wish to thank you for all you have done for us!”

Stirling

Another part of the project has been finished: Minergy farm, greenhouse, and renovation of an old building. What‘s next?

Besides the wind engines, solar cells and collectors known everywhere, there are some more ‚engineering marvels.‘ One of them is the Stirling engine. Basically, the difference of two temperatures drives a little engine with generator. It produces electricity for illumination or driving small apparatuses.

Our project partners have been interested for a long time and got more information in Europe. They want to do some more research and intend to produce such mini power stations at the Non-conventional Energy Development Center (NCEDC).

Like the little wind engines these mini generators shall be used in rural areas for lightening houses. They will be presenting us with their next project proposal soon.