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公开(公告)号：US5042262A
公开(公告)日：1991-08-27
申请号：US520773
申请日：1990-05-08
申请人： Roger F. Gyger , Gary D. Lang , Kenneth L. Burgers
发明人： Roger F. Gyger , Gary D. Lang , Kenneth L. Burgers
CPC分类号： F25B41/00 , A23L3/361 , A23L3/362 , F25B7/00 , F25D13/06 , B65G2207/24 , F25B2309/06 , F25B9/008
摘要： A food freezer having a mechanical refrigeration system comprising first and second closed-loop fluid circuits, wherein the first fluid circuit employs carbon dioxide as its refrigerant and transfers heat to the second fluid circuit, which in turn transfers heat to the environment or to another fluid circuit. In the first fluid circuit evaporator, carbon dioxide is maintained at pressures between 60.4 psig and 120 psig. In a preferred embodiment of the invention, the freezer employs at least two separate blowers or fans for circulation of air or other gas in the freezer enclosure. One blower/fan operates continuously to maintain circulation of cold air or gas in the freezer. The other blower/fan operates intermittently or at variable speeds to vary air flow across the evaporator, and thereby increase or decrease heat transfer from the freezer interior to the first fluid circuit evaporator to maintain the freezer interior at a desired temperature or within a desired temperature range.
摘要翻译： 一种具有包括第一和第二闭环流体回路的机械制冷系统的食品冷冻机，其中所述第一流体回路采用二氧化碳作为其制冷剂并将热量传递到所述第二流体回路，所述第二流体回路又将热传递到环境或另一流体 电路。 在第一流体回路蒸发器中，二氧化碳保持在60.4psig至120psig之间的压力。 在本发明的优选实施例中，冷冻器采用至少两个分开的鼓风机或风扇，用于在冷冻箱中循环空气或其它气体。 一个鼓风机/风扇连续运转，以保持冷藏室内冷空气或气体的循环。 另一鼓风机/风扇间歇地或以可变速度工作以改变蒸发器上的气流，从而增加或减少从冷冻室内部到第一流体回路蒸发器的热传递，以将冷冻室内部保持在所需温度或期望温度 范围。
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公开(公告)号：US4995234A
公开(公告)日：1991-02-26
申请号：US415649
申请日：1989-10-02
CPC分类号： F17C9/04 , F01K25/10 , F01K25/103 , F17C2221/033 , F17C2223/0161 , F17C2223/033 , F17C2225/0123 , F17C2225/036 , F17C2227/0318 , F17C2227/0323 , F17C2260/046 , F17C2265/05 , F17C2265/07
摘要： LNG is pumped to high pressure, vaporized, further heated and then expanded to create rotary power that is used to generate electrical power. A reservoir of carbon dioxide at about its triple point is created in an insulated vessel to store energy in the form of refrigeration recovered from the evaporated LNG. During peak electrical power periods, liquid carbon dioxide is withdrawn therefrom, pumped to a high pressure, vaporized, further heated, and expanded to create rotary power which generates additional electrical power. The exhaust from a fuel-fired combustion turbine, connected to an electrical power generator, heats the high pressure carbon dioxide vapor. The discharge stream from the CO.sub.2 expander is cooled and at least partially returned to the vessel where vapor condenses by melting stored solid carbon dioxide. During off-peak periods, CO.sub.2 vapor is withdrawn from the reservoir and condensed to liquid by vaporizing LNG, so that use is always efficiently made of the available refrigeration from the vaporizing LNG, and valuable peak electrical power is available when needed by using the stored energy in the CO.sub.2 reservoir.
摘要翻译： LNG被泵送到高压，蒸发，进一步加热然后膨胀以产生用于产生电力的旋转动力。 在绝热容器中形成了大约三点的二氧化碳储存器，以从蒸发的LNG回收的制冷剂的形式存储能量。 在峰值电力期间，从其中抽出液态二氧化碳，泵送到高压，蒸发，进一步加热和膨胀以产生产生附加电力的旋转动力。 连接到发电机的燃料燃烧式燃气轮机的排气加热高压二氧化碳蒸气。 来自CO 2膨胀器的排出流被冷却并且至少部分地返回到通过熔化储存的固体二氧化碳而蒸气冷凝的容器。 在非高峰时期，通过蒸发LNG从储存器中取出CO 2蒸气并冷凝成液体，从而始终有效地利用来自汽化LNG的可用制冷剂的使用，并且当需要使用所存储的有价值的峰值电力时 CO2储层中的能量。
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公开(公告)号：US4888955A
公开(公告)日：1989-12-26
申请号：US235298
申请日：1988-08-23
CPC分类号： F17C7/02 , F17C2201/0109 , F17C2201/032 , F17C2203/0648 , F17C2205/018 , F17C2221/013 , F17C2223/0169 , F17C2223/036 , F17C2225/0169 , F17C2227/0337 , F17C2250/032 , F17C2250/0631
摘要： A method and system for delivering high pressure, subcooled liquid carbon dioxide. An insulated tank having a height greater than its internal diameter holds liquid CO.sub.2 to a depth of at least about 6 feet, and high pressure, subcooled liquid CO.sub.2 is delivered from a lower outlet of the tank. CO.sub.2 vapor is condensed in the upper region to maintain a desired high pressure, e.g., about 290-310 psi., at the top of the tank. By withdrawing liquid CO.sub.2 from an upper region in the tank, subcooling it by heat exchange and returning subcooled liquid CO.sub.2 to a lower region, a thermocline region is created at least 2 feet below the surface, and above which equilibrium high pressure liquid CO.sub.2 exists. Heat exchange is efficiently carried out during off hours using liquid carbon dioxide to chill the condensed refrigerant from an existing auxiliary mechanical refrigeration unit.
摘要翻译： 一种用于输送高压过冷液态二氧化碳的方法和系统。 具有大于其内径的高度的绝热罐将液体CO 2保持在至少约6英尺的深度，并且高压过冷液体CO 2从罐的下部出口输送。 CO 2蒸汽在上部区域中冷凝，以在罐的顶部保持所需的高压，例如约290-310psi。 通过从罐中的上部区域抽出液态CO 2，通过热交换将其冷却并将过冷却的液体CO 2返回到下部区域，在表面以下至少2英尺处产生温跃层区域，并且在该高温区域上方形成平衡的高压液体CO 2。 使用液体二氧化碳在非工作时间内有效地进行热交换，以冷却来自现有辅助机械制冷单元的冷凝制冷剂。
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4.发明授权Method and apparatus for automatic production of blocks of solid carbon dioxide at low pressure 失效在低压下自动生产固体二氧化碳块的方法和装置
公开(公告)号：US5257503A
公开(公告)日：1993-11-02
申请号：US807050
申请日：1991-12-12
CPC分类号： C01B31/22
摘要： A method and apparatus to automatically produce blocks of solid CO.sub.2 at low pressure. The apparatus includes at least one closed mold coupled to a liquid CO.sub.2 conditioner and a CO.sub.2 gas recovery system, and a control panel for automatic operation. The method consists in supplying liquid CO.sub.2 to this mold at a low pressure in order to fill the mold with CO.sub.2 snow of low density during a definite period of time, to then raise the pressure inside the mold to an intermediate pressure by supplying liquid CO.sub.2 at this pressure (and at a temperature of approximately -40.degree. C.) to form a dense mass of solid CO.sub.2 which after a definite time will block the admission of CO.sub.2 to the mold, causing a significant pressure drop that is used to create a signal to automatically close off the supply of liquid CO.sub.2 and finalize the production cycle of the block.
摘要翻译： 一种在低压下自动生成固体二氧化碳块的方法和装置。 该装置包括耦合到液体CO 2调节器和CO 2气体回收系统的至少一个闭合模具和用于自动操作的控制面板。 该方法包括在低压下向该模具中供应液态二氧化碳，以便在一定时间内向模具中填充低密度的二氧化碳雪，然后通过将液态二氧化碳供应至 该压力（并且在大约-40℃的温度下）以形成致密的固体CO 2质量，其在一定时间之后将阻止CO 2进入模具，导致用于产生信号的显着的压降 自动关闭液体二氧化碳的供应，并确定块的生产周期。
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