A vacuum adiabatic body includes a first plate; a second plate; a seal; a support; and an exhaust port, wherein an extension tab extending toward the third space to be coupled to the support is provided to at least one of the first and second plates, and the extension tab extends downward from an edge portion of the at least one of the first and second plates.

A vacuum adiabatic body includes a first plate; a second plate; a seal; a support; and an exhaust port, wherein an extension tab extending toward the third space to be coupled to the support is provided to at least one of the first and second plates, and the extension tab extends downward from an edge portion of the at least one of the first and second plates.

Provided are thermally-insulated components that include a first tube enclosing a second tube, the first tube having individual corrugations or one or more helical or other corrugations. The corrugations can be non-perpendicular relative to the major axis of the tube, and the second tube and first tube can define a sealed insulating space of reduced pressure therebetween.

Provided are thermally-insulated components that include a first tube enclosing a second tube, the first tube having individual corrugations or one or more helical or other corrugations. The corrugations can be non-perpendicular relative to the major axis of the tube, and the second tube and first tube can define a sealed insulating space of reduced pressure therebetween.

A vacuum adiabatic body includes a conductive resistance sheet which blocks heat conduction between plate members, and a sealing frame which covers the conductive resistance sheet. The sealing frame includes a side surface part, an outer surface part which is bent and extends from a side of the side surface part, and an inner surface part which is bent and extends from the other side of the side surface part. The sealing frame is provided as a configuration of a concave groove in which the width between the outer surface part and the inner surface part is smaller than the width of the side surface part. According to the present invention, a peripheral portion of the vacuum adiabatic body can be stably maintained.

A vacuum adiabatic body includes a conductive resistance sheet which blocks heat conduction between plate members, and a sealing frame which covers the conductive resistance sheet. The sealing frame includes a side surface part, an outer surface part which is bent and extends from a side of the side surface part, and an inner surface part which is bent and extends from the other side of the side surface part. The sealing frame is provided as a configuration of a concave groove in which the width between the outer surface part and the inner surface part is smaller than the width of the side surface part. According to the present invention, a peripheral portion of the vacuum adiabatic body can be stably maintained.

Provided is a thermal-insulated multi-walled pipe for superconducting power transmission that highly prevents intrusion of external heat due to radiation and has excellent thermal insulation property without using a superinsulation. A thermal-insulated multi-walled pipe for superconducting power transmission comprises: a superconducting cable; and a multi-walled pipe that houses the superconducting cable, wherein the multi-walled pipe is composed of a plurality of straight pipes, and at least one of the plurality of straight pipes has, at a surface thereof, a zinc or zinc alloy-plated layer having an average spangle size of 2.0 mm or less.

Provided is a thermal-insulated multi-walled pipe for superconducting power transmission that highly prevents intrusion of external heat due to radiation and has excellent thermal insulation property without using a superinsulation. A thermal-insulated multi-walled pipe for superconducting power transmission comprises: a superconducting cable; and a multi-walled pipe that houses the superconducting cable, wherein the multi-walled pipe is composed of a plurality of straight pipes, and at least one of the plurality of straight pipes has, at a surface thereof, a zinc or zinc alloy-plated layer having an average spangle size of 2.0 mm or less.

Provided is a vacuum adiabatic body. The vacuum adiabatic body includes a supporting unit configured to maintain a vacuum space part. The supporting unit includes a plurality of bars extending in a vertical direction between the first plate member and the second plate member. When a pitch of the bar is a, an elastic modulus of a material forming the bar is E, and a radius of a long axis is n and a radius of a short axis is m when a cross-section of the bar has an elliptical shape is n, the following equation:

[00001]$1.0354<\frac{{\mathrm{Em}}^{3}n}{a^2}<188.2097$

is satisfied.

Provided is a vacuum adiabatic body. The vacuum adiabatic body includes a supporting unit configured to maintain a vacuum space part. The supporting unit includes a plurality of bars extending in a vertical direction between the first plate member and the second plate member. When a pitch of the bar is a, an elastic modulus of a material forming the bar is E, and a radius of a long axis is n and a radius of a short axis is m when a cross-section of the bar has an elliptical shape is n, the following equation:

[00001]$1.0354<\frac{{\mathrm{Em}}^{3}n}{a^2}<188.2097$

is satisfied.