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18-08-2003, 09:11 AM #1Originally posted by Gary
Another possibility might be an automatic expansion valve (AEV) which maintains a constant evaporator pressure, although this may require an accumulator.
Just another crazy idea: why not convert an externally equalised TEV to an electronic expansion valve by putting a constant pressure on the equaliser port, and connecting the bulb to a TEC (Thermo-electric cooler, a.k.a. Peltier element), effectively turning the TEV into a heat motor controlled EEV? By controlling polarity and voltage of the TEC, rapid adjustments of the flow can be made.