摘要:
It is possible to promote heat radiation from a cold head of a pulse tube cryocooler (100). A pulse tube cryocooler (100) includes a cold head (102) including a first-stage pulse tube (110a) and a radiator (150) thermally coupled to a high-temperature end of the first-stage pulse tube (110a), and a forced cooling device (200) that forcedly cools the radiator (150) in cool-down of the pulse tube cryocooler (100) from an ambient temperature to a cryogenic temperature. The forced cooling device (200) may stop the forced cooling of the radiator (150) after the cool-down.
摘要:
A vacuum adiabatic body includes a first plate, a second plate, a seal, a support, and an exhaust port, wherein the support includes a plurality of bars interposed between the first and second plates, and a bending part that has spots at which the plurality of bars are disposed as highest points and has a spot depressed into the third space at a central portion of the unit grid area as a lowest point is formed in the unit grid area.
摘要:
A vacuum adiabatic body includes: a first plate member defining at least one portion of a wall for a first space; a second plate member defining at least one portion of a wall for a second space having a different temperature from the first space; a sealing part sealing the first plate member and the second plate member to provide a third space that has a temperature between the temperature of the first space and the temperature of the second space and is in a vacuum state; a supporting unit maintaining the third space; a heat resistance unit at least including a conductive resistance sheet capable of resisting heat conduction flowing along a wall for the third space to decrease a heat transfer amount between the first plate member and the second plate member; and an exhaust port through which a gas in the third space is exhausted, wherein the vacuum adiabatic body further includes a side frame fastened to the conductive resistance sheet and the second plate member, and wherein the side frame is fastened to an edge portion of the second plate member. Accordingly, it is possible to prevent the formation of dews and to improve an adiabatic effect.
摘要:
A vacuum adiabatic body is provided. The vacuum adiabatic body may include a first plate, a second plate, a seal, a support, a heat resistance device, and an exhaust port. The support may include at least two bars to support the first plate and the second plate. Each of the at least two bars may include a material having a lower emissivity than emissivities of each of the first and second plates, and each bar may be fabricated using at least one material selected from the group consisting of polycarbonate (PC), glass fiber PC, low outgassing PC, polyphenylene sulfide (PPS), and liquid crystal polymer (LCP).
摘要:
A vacuum adiabatic body includes: a first plate member defining at least one portion of a wall for a first space; a second plate member defining at least one portion of a wall for a second space having a different temperature from the first space; a sealing part sealing the first plate member and the second plate member to provide a third space that has a temperature between the temperature of the first space and the temperature of the second space and is in a vacuum state; a supporting unit maintaining the third space; a heat resistance unit for decreasing a heat transfer amount between the first plate member and the second plate member; and an exhaust port through which a gas in the third space is exhausted, wherein the third space includes a first vacuum space part and a second vacuum space part having a lower height than the first vacuum space part, and an addition mounting part having parts mounted therein is provided at an outside of the second vacuum space part.
摘要:
There is provided refrigeration system (1) and method for remote cooling of a thermal load having a first portion (27) and a second portion (25). The system comprises a cold source (4) having a first cooling stage (5) and a second cooling stage (6), the temperature of the first cooling stage being higher than the temperature of the second cooling stage. The system also comprises a cryogen circuit for circulation of a cryogen flow in a closed cycle, the closed cycle being thermally coupled to the cold source. The system further comprises a compressor (7) for compressing and circulating the cryogen flow in the cryogen circuit. The cryogen circuit comprises a first conduit for thermally connecting the first cooling stage of the cold source to the first portion of the thermal load so as to cool said first portion towards the temperature of the first cooling stage, and a second conduit for thermally connecting the second cooling stage of the cold source to the second portion of the thermal load so as to cool said second portion to wards the temperature of the second cooling stage. The cryogen flow in the system is a sub-cooled or saturated liquid, two phase, saturated or overheated, supercritical gas helium flow.
摘要:
The present invention relates to a refrigeration appliance (100) with a refrigerant circuit (105), which comprises a heat exchanger (115, 121), and with a heat circuit (117, 123). The heat exchanger (115, 121) is thermally coupled to the heat circuit (117, 123) by means of a coupling element (119, 125), said coupling element (119, 125) being mechanically connected to the heat circuit (117, 123) by means of a detachable connection.