You MAY be able to cool any in-vessel electronics, if their presence is necessary by circulating a flow of coolant. Volume would need to be low enough to not alter vessel energy content (unlikely to be a problem) and in-vessel lower temperature enclave would need to be well enough insulated to allow coolant flow to be minimised. _____________________________ Getting desperate :-) - a slug of phase change material in a "cool space" would allow the temperature to be held at around the phase change temperature until all had transitioned. Use of water that boils away and vents into the main vessel may be viable. If your cooking lasts longer than the phase change energy capacity then your electronics also may be cooked :-). Russell --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .