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Gold/Mining/Energy : Global Thermoelectric - SOFC Fuel cells (GLE:TSE)
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To: blue_chip who wrote (4138)11/19/1999 2:11:00 PM
From: blue_chip  Read Replies (1) of 6016
 
Why the SOFC is TODAY's answer and some reason's why it is.

Ive discussed PEM's and their limitations today as well as some of their advantages. Now I will discuss further reasons why and how SOFC'c can be better suited TODAY than a PEM.

First, I'll address some of the issues or problems I stated SOFC's had.

1. Start up time, as I said, the public will not go for a car that you go out and turn on and hop in and drive 20 minutes later. SOFC companies however are developing insulative packages which contain the heat of the cell. It may take 15 or twenty minutes to get a cell to full power (lets say 700 degrees celcius) from "cold" temperature however they are developing methods to contain the heat when the cell is not in operation. If you turn off the cell and walk away from it what you will find is that you can come back to the car/cell lets say a day later and the cell will still be at maybe 4-500 degrees celcius). This means that when you restart the cell it may only tak one minute to it to reach full power. In the meantime the vehicle can obtain its auxillary power from battery storage. We are not talking about the mass of batteries that are in battery vehicles here either. The warmer the cell is at start up the faster it reaches full power. By that I mean that the cell may already start its powergeneration/ reaction at the 4 or 500 degree temperature when you come back to it, not full power, but power none the less. This reaction causes heat, which helps the cell start faster. I believe that the time required to say get the cell from room temp to 100c is longer than the time to get it from 100-200, etc.. Therefore if the cell is say still at 57-75 or even mor of its peak operating temperature 24-48 hours after the cell was last powered up then the time will be relatively short before a) it is producing power (it may start almost immediately if it is still hot enough) and b) until it is at full power. As said, in the mean time batteries would fufill any interim electrical needs.
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