Category Archives: Uncategorized

User experience with evacuated tube water heating

Nathan Jowett asked me to publish his article that he wrote about his solar hot water system.  I have to agree with him that evacuated tubes are brilliant, having had my own system for fifteen years now. Nathan’s Article V3.0

Posted in People, Uncategorized | 1 Comment

Upcoming workshops with Jonathan in Germany and Austria

Windrad Selbstbau Workshops   Baue mit uns ein Windrad. Voll funktionsfähig, nach dem weltweit bewährten Piggott Design. Die einfache Anwendung nachhaltiger Technologie steht im Mittelpunkt des Workshops.  An einem Workshop teilnehmen  Einen Workshop veranstalten more 

Posted in Uncategorized | Leave a comment

New chapter 9 in Kragten’s public report KD 341

Adriaan writes: “Dear HughI have added a new chapter 9 in my public report KD 341 which may interest you. The title of this chapter 9 is: “Voltage generation in a coil”. This chapter also contains three pictures of a small … Continue reading

Posted in Uncategorized | Leave a comment

F series wind turbine designs

My wind turbine designs in recent years have used ferrite magnets and the naming system is based on “F” for ferrite (or ceramic) magnets, preceded by number denoting the diameter in metres. Hence the 2F is my 2012 design ferrite … Continue reading

Posted in construction, ferrite magnets, my own projects, Scoraig, Uncategorized | Tagged , , | 2 Comments

PowerSpout price increase

PowerSpout plan to increase prices of their hydro turbines and associated gear by approximately 15% on 1st April. This will be the first rise in several years. At present exchange rates, a turbine costs approximately £1190 with an additional £150 … Continue reading

Posted in hydro, PowerSpout hydro turbines, Uncategorized | 1 Comment

Greg Gibbes hydro turbines using axial flux alternators

Greg sent me some photos of the hydros he is building using axial flux alternators to provide direct single-phase AC for sites in Papua, Indonesia. Here is some information. Greg’s email is [email protected] These are single phase units, 240VAC, 50Hz. … Continue reading

Posted in construction, developing world, People, Uncategorized | 2 Comments

New Facebook page

I have started a Scoraig Wind Electric Facebook page that will only be about renewable energy stuff. (My personal Facebook has some pics of wind turbines etc but also plenty of grandchildren and dogs etc so this will be a … Continue reading

Posted in my own projects, Scoraig, Uncategorized | Leave a comment

wire size and current

I got an email question today and it seems important enough to answer with a new post.  Here is the question “How many amp of 14,15,17,18 and 20 awg wire for wind turbine. Can you give me any chart? Please!!!!! … Continue reading

Posted in Uncategorized | 2 Comments

my 1998 blade design notes translated into Russian :-)

I used to teach blade design.  I went to Wales to learn (more) about windpower on a course (in about 1989), but the guys there made me teach the session on blade design.  They just announced that I would do … Continue reading

Posted in Uncategorized | Leave a comment

5-day-workshop for a 2F HP Turbine in Germany

(ERNI e.V., www.erni-kollektiv.org) together with the VHS Braunschweig conduct a 5-day-workshop for a 2F HP Turbine from 14th to 15th May in Braunschweig, Germany. Application is available here: https://www.vhs-braunschweig.de/die-vhs-braunschweig/kurssuche/kurs/Workshop-zum-Bau-einer-Kleinstwindkraftanlage/nr/BMUB01/bereich/details/ Costs: 70€ for all 5 days Information flier here  

Posted in Uncategorized | Leave a comment