| 摘要 |
When gas is released from a gas canister 3 expansion of the compressed gas cools the exterior surface 6 of the canister. This effect is exploited in the present invention to cool the cold side of a thermoelectric generator (TEG) 2. The invention finds particular application in a portable camping stove which serves not only as a heat source but also as a means for generating electricity to recharge portable devices. The portable stove includes a burner 11 which receives gas, via a valve 8, from a gas canister 3. A heat sink 20 extends from the cold surface of the TEG 2 to at least part of the exterior surface of the gas canister. A thermal conductor extends 16 from the burner to the hot surface 4 of the TEG 2. More generally, the gas canister may be a container of compressed fluid. In one embodiment, a fan can be selectively driven in either direction, to transfer air to or from the heat sink. |
