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post #170 of Old 02-23-2019
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Re: Electric Conversion log for Kahleesea

Originally Posted by texlan View Post

I think there are some advantages to this arrangement -- Electric prime mover for the reliable quick anchor set/docking/get out of the way/short hop, and diesel genset for induction cooktop, microwave and air conditioning at anchor, and longer 30-40 hours of motoring @ 5kts. It's the direction I'm going.

I'm glad someone else had this thought too.

nigel Calder is working on his boat and is doing something similar.

He wants to get to a single fuel boat, diesel with electric.

It is not cheap however but he is working out all the math to at least make the running no more expensive.

Apparently, you can get insanely efficient genset numbers along with very long lifetimes.

He is working on tech so that whenever the genset is running it is running with optimal efficiency. Any extra energy is automatically stored.

An ICE propulsion motor is often not running efficiently but converting from gen-set to electric propulsion has conversion costs but he thinks he can do the tech so the hybrid design is ultimately more efficient.

He actually passed that idea off to someone else and is working on a controller and power generator alternator replacement that will add load to the engine whenever it is not running at WOT until the engine is at optimal efficiency and store the energy in lithium batteries and eliminate the need for a genset.

The lesson from the Icarus story is not about human failing.
It is a lesson about the limitations of wax as an adhesive.
If you have an engineering problem solve it.

Last edited by davidpm; 02-23-2019 at 12:42 AM.
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