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微通道换热器在CO_2跨临界制冷系统中的应用 被引量:6
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作者 杨俊兰 马一太 管海清 《制冷与空调》 2005年第2期52-56,共5页
在制冷系统中,换热器是主要的组成部件。由于CO2 跨临界制冷系统较高的操作压力,以及近临界区CO2 特殊的热物性和传输性,系统的部件结构需要引起特别注意。微通道换热器不仅换热性能好,而且可以承受较高的操作压力,比较适合CO2 高压制... 在制冷系统中,换热器是主要的组成部件。由于CO2 跨临界制冷系统较高的操作压力,以及近临界区CO2 特殊的热物性和传输性,系统的部件结构需要引起特别注意。微通道换热器不仅换热性能好,而且可以承受较高的操作压力,比较适合CO2 高压制冷系统,这样可使系统更加紧凑、安全且高效。至今,CO2 制冷系统所用的微通道换热器已有多种型式,针对CO2 的性质设计高效的微通道换热器对提高CO2制冷系统的性能非常重要。 展开更多
关键词 微通道换热器 CO2跨临界制冷系统 高压放热 气体冷却器
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Excess Heat Power Registration in Experiments with High Voltage Electric Discharge Systems
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作者 Alexander Karabut 《Journal of Energy and Power Engineering》 2013年第9期1735-1744,共10页
The author review results on LENR (low-energy nuclear reaction) processes in the cathodes of a high current glow discharge and a HVEC (high-voltage electrolysis cell). The cathodes used in the experiments were mad... The author review results on LENR (low-energy nuclear reaction) processes in the cathodes of a high current glow discharge and a HVEC (high-voltage electrolysis cell). The cathodes used in the experiments were made of Ni foil, Pd foil, Pd coated Re and solid-state nanostructured Pd. Up to 300 W of excess heat power, with a power gain up to 340%, was observed in experiments using a high-voltage electrolysis cell. Based on these experimental results, we propose a phenomenological model for LENR. 展开更多
关键词 High-voltage discharge excess heat impurity nuclides X-ray emission.
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Excess Heat Power Registration in High Voltage Electrolysis Cell Experiments
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作者 Alexander Karabut 《Journal of Environmental Science and Engineering(A)》 2013年第11期697-711,共15页
Experimental research of the heat and high-energy processes occurring in the cathode solid medium in the high voltage electric discharge system (electrolysis cell and glow discharge device) is presented. The experim... Experimental research of the heat and high-energy processes occurring in the cathode solid medium in the high voltage electric discharge system (electrolysis cell and glow discharge device) is presented. The experiments were carried out: Electrolysis in heavy water with a Pd cathode, electrolysis in light water with Ni and Pd cathodes, the glow discharge in deuterium with a Pd cathode. Excess heat was observed in experiments with high-voltage electrolysis (1,000 V or more). The experiments showed that the maximum excess heat power values of 5-8 W for glow discharge and 180-280 W for high-voltage electrolysis and heat efficiency up to 170% for glow discharge, and 800% for high-voltage electrolysis. The production of impurity nuclide yield showing a shift of up to a few per cent from natural isotopic abundances was detected by spark mass spectrometry and by secondary ionic mass spectrometry. The authors propose based on these experimental results a phenomenological model for low energy nuclear reaction. 展开更多
关键词 Electric discharge excess heat power heat efficiency impurity nuclides.
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