A thermoelectric power unit is provided. The power unit may include at least one thermoelectric device. A first fluid passage may be disposed on a first side of the thermoelectric device and may be configured to receive a hot exhaust stream. The power unit may further include a plurality of heat pipes configured to focus thermal energy from a fluid flowing through the first passage toward the first side of the thermoelectric device. A second fluid passage may be disposed on a second side of the thermoelectric device opposite of the first fluid passage and configured to conduct thermal energy away from the thermoelectric device.
U.S. GOVERNMENT RIGHTS
 This invention was made with government support under the terms of Contract No. DE-FC26-04NT42280 awarded by the Department of Energy. The government may have certain rights in this invention.