Mark Log
Sunday, October 16, 2016. 2:41pm
Rough Google slides presentation up. Included sketches of basic TEG layouts with calculations on spacial arrangements. Compiled various design notes from Marcin and others. Researched products to be used, included links. Need to finalize those asap. Read through Marcin's Google Slides presentation on the hydronic stove: http://opensourceecology.org/wiki/Open_Source_Hydronic_Wood_Stove
Also looked at this on the heat exchanger: http://opensourceecology.org/wiki/Wood_Stove_with_Heat_Exchanger
"The pellet burner fires a stove which can also run on regular wood. The flame heats up a heat exchanger which produces the hot water or water mix for the teg. The hydronic heating Loop will be a separate heat exchanger inside the same stove which then feeds the water to the floor. The teg is independent of the hydronic water heating at first. However the teg has a cold water line running from the aquaponic ponds to provide the cooling water. That water is pumped while the hot water from the stove Rises through the TEG by convection."
Fri Oct 14, 2016
MJ notes - let's get the temperature difference up to 100C with glycol or sugar water.
Thursday, October 13, 2016. 1:30am.
Been out of town. Did basic Google and YouTube searches for existing implementations of TEG systems, DIY-ers, and TEG knowledge. Reviewed existing material from wiki on TEG. Reviewed Marcin's log of feedback from ITS board outreach. Learned how to create wiki account and create a work log. Plan to have basic first drafts of designs up tomorrow (later today). "...TEG's fill factor is ~50%, meaning cover 50% surface area of the hot tube... And because only 1/2 of the 60C drop is applied on TEG..." Follow up on these comments from Zhixi... Sounds like we need a different design or 5x bigger system to achieve 100W?