KR-102961880-B1 - Refrigeration system and refrigeration container having the same

KR102961880B1KR 102961880 B1KR102961880 B1KR 102961880B1KR-102961880-B1

Abstract

A refrigeration system and a refrigerated container equipped with the same are disclosed. A refrigeration system and a refrigerated container equipped with the same according to an embodiment of the present invention are a refrigeration system for a refrigerated container equipped with a refrigeration unit, wherein the refrigeration system comprises a fuel cell for supplying power to the refrigeration unit and a cryogenic fluid storage tank for storing a cryogenic fluid to be used as fuel for the fuel cell, and a transfer line for transferring a cryogenic fluid discharged from the cryogenic fluid storage tank to the fuel cell, wherein the transfer line comprises an external line formed on the outside of the refrigerated container and an internal line formed to pass through the internal space of the refrigerated container and connecting the external line.

Inventors

김서영

Assignees

하이리움산업(주)

Dates

Publication Date: 20260507
Application Date: 20221213

Claims (6)

In a refrigeration system for a refrigerated container equipped with a refrigeration unit, The above refrigeration system is, It includes a fuel cell for supplying power to the above-mentioned refrigerator and a cryogenic fluid storage tank for storing a cryogenic fluid to be used as fuel for the above-mentioned fuel cell, and a transfer line for transferring a cryogenic fluid discharged from the cryogenic fluid storage tank to the above-mentioned fuel cell. The above transfer line is, An external line formed on the outside of the above-mentioned refrigerated container; and It is characterized by including an internal line formed to connect the external line and pass through the internal space of the refrigerated container. A refrigeration system characterized by the refrigeration container being cooled by the cryogenic fluid transferred through the internal line to the refrigeration unit, which receives power from the fuel cell.
In paragraph 1, the refrigeration system is, It includes an indoor unit provided inside the above-mentioned refrigerated container that generates air into the internal space of the above-mentioned refrigerated container, and The above indoor unit is, A refrigeration system characterized by including a plurality of discharge ports through which generated wind is discharged, wherein at least one of the plurality of discharge ports is formed to face the internal line.
In paragraph 1, the above external line is, A first outer line, which is the section before passing through the interior of the refrigerated container from the above cryogenic fluid storage tank; and It includes a second external line that passes through the interior of the above-mentioned refrigerated container and is a section before being connected to the above-mentioned fuel cell, and The above refrigeration system is, A refrigeration system further comprising a connecting line connecting the first external line and the second external line.
In paragraph 3, the above-mentioned refrigeration system is, A valve for selectively transferring a cryogenic fluid discharged from the above cryogenic fluid storage tank to the above internal line or the above connecting line; and A refrigeration system including a control system for controlling the operation of the above valve.
In paragraph 4, the control system is, A refrigeration system characterized by determining whether to allow a cryogenic fluid to flow into the connection line according to at least one of a preset temperature or a freezing time.
In a refrigerated container equipped with a refrigeration unit, the refrigerated container, Includes a refrigeration system, The above refrigeration system is, A fuel cell for supplying power to the above-mentioned refrigerator and a cryogenic fluid storage tank for storing a cryogenic fluid to be used as fuel for the above-mentioned fuel cell are connected, and a transfer line for transferring a cryogenic fluid discharged from the cryogenic fluid storage tank to the above-mentioned fuel cell is included. The above transfer line is, An external line formed on the outside of the above-mentioned refrigerated container; and It is characterized by including an internal line formed to connect the external line and pass through the internal space of the refrigerated container. A refrigerated container characterized by the refrigeration unit receiving power from the fuel cell and the refrigeration container being cooled by the cryogenic fluid transferred through the internal line to the fuel cell.

Description

Refrigeration system and refrigeration container having the same The present invention relates to a refrigeration system and a refrigerated container equipped with the same, and more specifically, to a technical concept that enables the refrigeration efficiency of a refrigerated container to be improved and the refrigeration capacity of the refrigerated container to be minimized by utilizing the heat of vaporization of the cryogenic fluid supplied to the fuel cell along with the cold air generated by the refrigeration unit in a refrigerated container equipped with a refrigeration unit driven by a fuel cell using a cryogenic fluid such as liquid hydrogen as fuel. Containers are used to store specific goods or to transport goods by being coupled to transport devices such as trucks. Among these containers, refrigerated containers are widely known for being manufactured using insulation materials to regulate the temperature of the interior space, and are used for the storage or transportation of goods requiring refrigeration or freezing. These refrigerated containers are equipped with refrigeration means, such as a refrigerator, to control the internal temperature, and power supply from the outside is required to operate such refrigeration means. In general, conventional refrigeration systems utilize refrigerants to generate cold air along with electric drive, and environmental issues resulting from greenhouse gas emissions caused by the use of such refrigerants are becoming a major concern. However, considering the relatively low cost and refrigeration efficiency, it is realistically difficult to have all refrigeration units perform refrigeration in a specific different way. Meanwhile, as the severity of energy problems caused by the use of fossil fuels has emerged, research on alternative fuels is actively underway. Among these, hydrogen-based technologies are gaining attention as alternative fuels due to their eco-friendliness and high efficiency, and interest in liquid hydrogen, in particular, is rising significantly due to its excellent storage efficiency and stability. Even in fuel cells that generate electricity by supplying fuel such as hydrogen, fuel cells utilizing liquid hydrogen are being used, in which such liquid hydrogen is stored and then vaporized to be used as fuel. In such cases, during the process of vaporizing liquid hydrogen stored in a relatively cryogenic state, heat of vaporization of the liquid hydrogen is generated, and this heat of vaporization may be low enough to lower the temperature of the space inside the refrigerated container. Therefore, even if it is not a refrigeration method that uses no refrigerant at all, a technical concept is required to improve the efficiency of internal temperature control in a refrigerated container by minimizing the capacity of the refrigeration unit used in a refrigerated container of the same volume to reduce refrigerant usage as much as possible, while utilizing the heat of vaporization of liquid hydrogen supplied to the fuel cell for driving the refrigeration unit. A brief description of each drawing is provided to help to better understand the drawings cited in the detailed description of the invention. FIG. 1 shows a schematic configuration of a refrigeration system according to an embodiment of the present invention and a refrigeration container equipped with the same. FIG. 2 shows a schematic configuration of a refrigeration system and a refrigeration container equipped with the same according to another embodiment of the present invention. FIG. 3 shows a schematic configuration of a refrigeration system and a refrigeration container equipped with the same according to another embodiment of the present invention. The present invention is capable of various modifications and may have various embodiments, and specific embodiments are illustrated in the drawings and described in detail. However, this is not intended to limit the present invention to specific embodiments, and it should be understood that it includes all modifications, equivalents, and substitutions that fall within the spirit and scope of the present invention. In describing the present invention, detailed descriptions of related prior art are omitted if it is determined that such detailed descriptions may obscure the essence of the present invention. Terms such as "first," "second," etc., may be used to describe various components, but said components should not be limited by said terms. These terms are used solely for the purpose of distinguishing one component from another. The terms used in this application are used merely to describe specific embodiments and are not intended to limit the invention. The singular expression includes the plural expression unless the context clearly indicates otherwise. In this specification, terms such as “comprising” or “having” are intended to specify the existence of the features, numbers, steps, actions, components, parts, or combinations