This reminds me that Kohler was doing something not long after I had
left with "capstone" turbines. Not sure of the significance, but I
do recall the term being used.
I know they would have been relatively small units, if I recall in
the 10kW-15kW range.
They were talking at one time about producing them for use by
restaurants like McDonald's and Burger King to peak shave and
provide hot water.
The projects I worked on that predated this were for the GE "Smart
House" in Maryland. One system we actually built and had
operational there consisted of a three cylinder Yanmar diesel
converted to natural gas running at 1200 RPM. There was a power
management system using high current TRIACs that would allow the
loads to be switched between the utility and the generator based on
load balancing and peaks. It was crude by today's standards but
worked well. And the engine also produced hot water for domestic
use through a heat exchanger, too.
One unit we took out of service had over 12,000 hours on it without
ever being shut down or taken offline. It could have gone a lot
longer. The insides were almost like new.
"Nothing runs like a Deere" I was very impressed with the JD 5500
(yanmar) The gearshift was mickeymouse/klunky compared to the late
60s/70s Dubuque tractors, but the engine, hydraulics, cab and
everything else was nice. The yanmar engine was way more
sophisticated then the JDs of the same vintage.
75 HP in the size of a 15 HP IH A
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