不可逆半導(dǎo)體制冷器和溫差發(fā)電器性能特性的優(yōu)化分析.pdf

1、廈門大學(xué)碩士學(xué)位論文不可逆半導(dǎo)體制冷器和溫差發(fā)電器性能特性的優(yōu)化分析姓名：潘玉灼申請學(xué)位級別：碩士專業(yè)：凝聚態(tài)物理指導(dǎo)教師：陳金燦20070501ABSzRACTTheenergyconversionsystemsofsemiconductorthermoelectricrefrigerationorgenerationhavemanyadvantagessuchascleanness，quietnopollution，smallsiz

2、elightweight，nomechanicalmovingparts，longlife，andSOonItaccords塒tllagreenenvironmentalprotectionrequestandhasimportantstrategicmeaningforkeepingacontinualdevelopmentofthenationaleconomyAlong、加血thebreakthroughdevelopmentof

3、semiconductormaterials，theresearchontheoptimalperformancecharacteristicsofthesemiconductorthermoelectricrefrigeratorsandgeneratorsandtheirapplicationshavebecomeapopulartopicInthisthesistheoptimalproblemsontheperformancec

4、haracteristicsofsemiconductorthermoelectricrefrigeratorsandgeneratorsare，respectivelydiscussedonthebasisofnonequilibriumthermodynamicsInchapter1，thedevelopmentstatusofthesemiconductorthermoelectricdevicesisintroducedsimp

5、lyandthecurrentresearchrelativetothesedevicesisdescribedInchapter2，therelevantprinciplesofsemiconductorthermoelectricdevicesareintroducedindetailTherelationsbetweenthefigureofmeritofsemiconductorthermoelectricdevicesandt

6、heSeebeckeffect，PeltiereffectandThomsoneffectaleanalyzedInchapter3，theoptimalperformanceofanirreversiblesemiconductorthermoelectricrefrigeratorisinvestigatedTheinfluenceoftheexternalandinternalirreversibilitiesofthetherm

7、oelectricdeviceontheperformanceofthesystemisanalyzedThegeneralexpressionsofthecoefficiemofperformanceandpowerinputarederivedbyintroducingsomedimensionlessparametersandvariablesThecoefficientofperformanceoftherefrigeratio

8、ndeviceismaximizedforgivencoolingloadandtotalheattransferareaofthesystemandconsequentlythestructureparametersofthedeviceandthearearatiooftheheatexchangersofthesystemaredeterminedoptimallyTheeffectsofthevariousparameters0

9、11theoptimumperformanceofthedevicearediscussedfurtherInchapter4，theperformanceofallirreversiblesemiconductorthermoelectricgeneratorisinvestigatedTheinfluenceofthevariousirreversibilitiesontheperformanceofthesystemisanaly

10、zedThegeneralexpressionsoftwoimportantperformanceparameters，theefficiencyandpoweroutputarederivedTheefficiencyofthesystemismaximizedforgivenheatsupplyingandtotalheattransferareaofthesystemMoreovertheeffectsofthevariouspa

11、rametersontheoptimumperformanceofthesystemarediscussedindetailTheresultsobtaininthisthesiswillbeusefulforamoredetailedinvestigationandfortheoptimaldesignofrealthermoelectricsystemsKeywords：Thermoelectricdevice；irreversib