A heat recovery steam generator (HRSG) includes a first casing having an interior enclosing at least one duct for gas to flow therein along a gas flow axis. Each duct is defined by duct defining members that are spaced apart from each other and extend into the interior of the first casing. A plurality of stiffening members are elongated along the gas flow axis. Each of the stiffening members are positioned between two of the duct defining members. The stiffening members and duct defining members have a substantially similar coefficient of thermal expansion.

A thermal emission structure capable of exhibiting heat release characteristics reverse to those of a Phase-change material used therein includes a first conductor layer, a dielectric layer on the first conductor layer, and a second conductor layer on the dielectric layer and having a periodic geometry, at least one of the first conductor layer and the second conductor layer comprises a Phase-change material having an electrical conduction property that varies between a high-temperature phase and a low-temperature phase.

A thermal emission structure capable of exhibiting heat release characteristics reverse to those of a Phase-change material used therein includes a first conductor layer, a dielectric layer on the first conductor layer, and a second conductor layer on the dielectric layer and having a periodic geometry, at least one of the first conductor layer and the second conductor layer comprises a Phase-change material having an electrical conduction property that varies between a high-temperature phase and a low-temperature phase.

A heat exchanger comprises a glass body having a first flat face and a second flat face on opposing ends, and defining a longitudinal axis therebetween. A plurality of holes in the glass body are elongated along the longitudinal axis by extending from said first flat face to said second flat face. The plurality of holes are configured to receive and direct a gas therethrough, to exchange heat between the gas and the glass body.

An MCM heat exchanger 10 to be used in a magnetic heat pump device 1 comprises: an assembly 11 formed by bundling wires 12; and a cover layer 13 covering the assembly 11, each of the wires 12 is composed of a magnetocaloric material having a magnetocaloric effect, and the cover layer 13 includes: a tubular portion 14 surrounding the periphery of the assembly 11; and a filling portion 15 filling a gap between the outer periphery of the assembly 11 and the tubular portion 14.

An MCM heat exchanger 10 to be used in a magnetic heat pump device 1 comprises: an assembly 11 formed by bundling wires 12; and a cover layer 13 covering the assembly 11, each of the wires 12 is composed of a magnetocaloric material having a magnetocaloric effect, and the cover layer 13 includes: a tubular portion 14 surrounding the periphery of the assembly 11; and a filling portion 15 filling a gap between the outer periphery of the assembly 11 and the tubular portion 14.

An elongated heat pipe is described. In examples, the heat pipe may include a body comprising a polygonal-shaped cross-section and a RF compatible material, e.g., a ceramic, a polymer, glass, etc. The heat pipe may further include a working fluid disposed within the body.

Provided is a heat storage unit having a simple configuration, capable of being attached to various objects, and capable of efficiently performing heat exchange. The heat storage unit has at least one inorganic fiber member configured by binding or entangling flexible inorganic fibers and having a desired shape; and a heat storage material in contact with the inorganic fibers.

A two-phase cooling system for an X-ray high-voltage generator comprises a heat sink block and a heat sink. The heat sink block spatially surrounds a cooling duct loop, wherein the cooling duct loop is at least partially filled with a working medium and is configured to act as an oscillating heat pipe. The heat sink is configured to dissipate heat from a heat source. The heat sink block includes a material including a polymer.

A heat exchanger includes a glass body having a first flat face and a second flat face on opposing ends, and defining a longitudinal axis therebetween. A plurality of holes in the glass body are elongated along the longitudinal axis by extending from said first flat face to said second flat face. The plurality of holes are configured to receive and direct a gas therethrough, to exchange heat between the gas and the glass body.