A solvent composition contains a tetralin compound represented by the following general formula and a polyether compound represented by the following general formula. A system is described that includes a source device and a destination device coupled to a network. The filter may, at its discretion according to preconfigured rules, send messages as is, block messages, change the content of the messages, request authentication or limit the rate such messages can be delivered, by buffering the messages and sending them only in preconfigured intervals. The first high power factor electrode is thermally and electrically attached to the first side of the thermoelectric layer and the second high power factor electrode is thermally and electrically attached to the second side of the thermoelectric layer.