I have just finished making a new EXOT reactor, using a similar method as found in Nuclear ones.
Here's how it works:
The EXOT is brought into a holding chamber from three sources, and is brought up to the entrance portal via the Water Equalization Test.
Then, it is pumped into the reactor, and using the solid electron technology, explodes the EXOT quite fast.
The heat that is generated is brough along a HSWC path, and is then used to boil water, which goes into another portal to the generation chamber.
The power is generated by having the water vapor run though the 'Turbines', and that power goes into a battery which powers a light!
Anyways, here it is:
NOTE: If you open the save, and don't understand what to do, you just:
1: Click the 'ON' button for the EXOT Flow.
2: Enable Water Equalizaion Test
3: Wait for the water in the HSWC to boil, in ALL chambers.
4: Then, click on the 'Activate Pump' button, and have some free power!