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Computerized door for cold storage rooms of ships, with advanced safety and energy efficiency features, comprising:- status indication system (102) of closing or opening by means of LED with detection sensor;- integrated battery (103) powered by solar panel (104);- lock (105.1) integrating switch (105) to activate status indication system (102);- sliding system (106) comprising an ergonomic handle (101);- access counter (107.1) and timer (107) suitable for monitoring overall use, allowing efficient management of the use of said door;- integrated and/or remote control panel (113).

The present disclosure relates to a method and a system of cooling a stream of natural gas by exchanging heat with a mixed refrigerant, i.e. a refrigerant fluid composed of two or more components, the mixed refrigerant being cooled in a closed thermodynamic cycle, wherein a cooling effect is produced through cyclic thermodynamic transformations, including compression, cooling, condensation, expansion and vaporization, the method comprising the following cyclic steps: - compressing a main stream of mixed refrigerant to different pressure values by a multi-stage compressor (300) driven by a gas turbine (400), a mixed refrigerant liquid fraction being obtained from each stage of the multi-stage compressor (300) and a mixed refrigerant vapor fraction being obtained from the last stage of the multi-stage compressor (300); - cooling the mixed refrigerant liquid fractions and the mixed refrigerant vapor fraction by exchanging heat with the main stream of sub-cooled mixed refrigerant, to obtain a plurality of streams of sub-cooled mixed refrigerant at different pressure, - flashing the streams of sub-cooled mixed refrigerant at different pressure to one common pressure, for further cooling the streams of sub-cooled mixed refrigerant and obtaining a plurality of streams of sub-cooled mixed refrigerant at a same pressure, - re-combining the streams of subcooled mixed refrigerant to obtain the main stream of sub-cooled mixed refrigerant, - exchanging heat between the main stream of sub-cooled mixed refrigerant and the stream of natural gas, and - returning the main stream to the compressing step, wherein the method further comprises the following steps: - splitting a portion of the mixed refrigerant liquid fraction from one of the stages of the multi-stage compressor (300), to obtain an auxiliary stream of mixed refrigerant, - cooling the auxiliary stream of mixed refrigerant by exchanging heat with the main stream of sub-cooled mixed refrigerant in a dedicated heat exchanger pass, to obtain an auxiliary stream of slightly sub-cooled mixed refrigerant, - flashing the auxiliary stream of slightly sub-cooled mixed refrigerant, obtaining an auxiliary stream of sub-cooled mixed refrigerant, - exchanging heat between the auxiliary stream of sub-cooled mixed refrigerant and the inlet air directed to the gas turbine (400) or alternatively between the auxiliary stream of sub-cooled mixed refrigerant and a gas turbine inlet air chilling fluid, - re-combining the auxiliary stream of sub-cooled mixed refrigerant with the main stream of mixed refrigerant, downstream of the step of exchanging heat between the main stream of sub-cooled mixed refrigerant and the stream of natural gas, and - returning the main stream of mixed refrigerant to the compressing step.

本发明涉及二氧化碳液化技术领域，具体涉及一种降低二氧化碳液化冷耗的方法和装置。该方法包括：将二氧化碳压缩气依次进行n级换热冷却和二氧化碳液化，得到液化二氧化碳，并分离出不凝气；其中，所述不凝气返回与所述二氧化碳压缩气逆流接触，进行所述n级换热冷却；所述n级换热冷却的过程包括：将所述不凝气进行逐级降压，并进行逐级分流；其中，n为不小于3的正整数。该方法能够高效的回收不凝气的冷量，从而显著降低二氧化碳液化过程的冷耗，提高二氧化碳液化工艺的经济性。

本实用新型涉及电子膨胀阀技术领域，且公开了一种电子膨胀阀，包括电子膨胀阀主体，所述电子膨胀阀主体的下端表面设置有第一冷媒导流管道主体，所述电子膨胀阀主体的上端侧面设置有第二冷媒导流管道主体，所述第一冷媒导流管道主体的外表面设置有第一定位支撑筒体，所述第二冷媒导流管道主体的外表面设置有第二定位支撑筒体，所述第一定位支撑筒体和第二定位支撑筒体的内侧表面均滑动装填有不锈钢过滤网筒，通过采用在冷媒管外设置一体式定位支撑筒体结构，可在定位支撑筒体内装填不锈钢过滤网筒结构，可进行过滤，其外部通过螺纹安装堵盖固定安装，其安装方便，装拆更换不锈钢过滤网筒方便。

A Gifford-McMahon (GM) type double-inlet pulse tube system providing cooling at cryogenic temperatures is provided. The system has a co-axial double-inlet valve that includes a base having an adjustable port, a fixed needle partially engaged in one end of the adjustable port, an adjustable needle partially engaged in another end of said adjustable port, and a body for housing the base, the fixed needle and the adjustable needle. The base is configured to be adjustable along an axial direction. The adjustable needle is arranged co-axially with the fixed needle. The adjustable port and the adjustable needle are configured to control an alternating current (AC) flow and a direct current (DC) flow between the stem port and the end port and to produce the DC flow in either direction between the stem port and the end port.

A refrigerator includes a storage compartment formed inside a main body, a thermoelectric element configured to cool the storage compartment, a heat sink in contact with the thermoelectric element, the heat sink including a sink base and a plurality of fins protruding from one surface of the sink base, and a temperature sensor configured to measure a temperature of the heat sink, the temperature sensor including a sensor member and a wire. The heat sink includes a sensor receiving groove recessed in the one surface of the sink base, and the sensor member is received in the sensor receiving groove.

本实用新型适用于水处理设备技术领域，公开了一种制冰设备，包括外壳、冰盒、喷淋机构、收集容器和回流组件。冰盒设置于外壳内，用于供水体在其内形成冰块，喷淋机构用于向冰盒提供水体，收集容器设置于外壳内，且位于冰盒的下方，喷淋机构安装于收集容器内，收集容器用于收集从冰盒落下的水体。回流组件包括回流管路和第一泵体，回流管路连接于收集容器和喷淋机构之间，用于将收集容器内的水体输送至喷淋机构，第一泵体用于为水体在回流管路中的流动提供动力。本实施例提供的制冰设备，提高了制冰效率。

To reduce a burden on a worker who performs work for filling a plurality of refrigeration devices with a refrigerant.SOLUTION: The method for filling the first and second refrigerating devices (21, 22) with the refrigerant of the refrigerant cylinder (2) includes first and second filling steps (210, 230). In the first filling step (210), the control device (6) performs predetermined processing in each of a first start step (211), a first determination step (212), and a first stop step (219). In the second filling step (230), the control device (6) performs predetermined processing in each of a second start step (231), a second determination step (232), and a second stop step (239).SELECTED DRAWING: Figure 1