Since the input energy is simply the sum of these two quantities we may express the thermal to electrical energy conversion efciency as h qv qv w. In this paper we describe the working principles of these elements.
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Solid state thermionic energy converter semiconductor diode implementation and method for conversion of thermal energy to electric energy and electric energy to refrigeration.
Thermal diode for energy conversion. The gap region can be p type intrinsic or moderately doped n type. In embodiments of this invention a highly doped n region can serve as an emitter region from which carriers can be injected into a gap region. Was thinking along the same lines when in 2002 he patented his thermal diode for energy conversion us patent 6396191 which uses a thermopile bank of thermionic diodes.
Emitted by the diode. Caloric energy conversion is an emerging field of cooling heat pumping and power generation technologies. This is followed by the first up to date critical review of the research activities and applications of thermal control elements in all types of caloric devices.
The potentially high energy efficiency and use of environmentally friendly and safe solid state working substances in the form of refrigerants has stimulated increased research activity in the past two decades. Caloric energy conversion is an emerging field of. These are slightly different more like thermocouples than the diodes that i am advocating.
Thermal switches thermal diodes and thermal regulators. 2 we compute the efciency h when the emissivity of the diode is in the narrow band limit ie wo is only nonzero within a small window of. The strategies for tuning the thermal conductivity of pcms and their potential energy applications such as thermal energy harvesting and storage thermal management of batteries thermal diodes and other forms of energy utilization are summarized systematically.
A characterization of the electrical and thermal properties of thermoelectric diode structures indicates that the figure of merit for thermal to electrical energy conversion is significantly. Peter hagelstein from eneco inc. Thermal diodes and.
The potentially high energy efficiency and use of environmentally friendly and safe solid state working substances in the form of refrigerants has stimulated increased research activity in the past two decades. Caloric energy conversion is an emerging field of cooling heat pumping and power generation technologies. Very high thermal to electric conversion efficiencies have been reported previously with thermal diode structures in which a thin n type emitter layer is formed on the hot side of a thick.
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