Characterisation of thermal diode panels for use in the cooling season in buildings

Varga, Szabolcs; Oliveira, Armando C.; Afonso, Clito

doi:10.1016/s0378-7788(01)00090-1

Cited by 67 publications

(36 citation statements)

References 4 publications

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“…The heat conduction equations applied to the two areas, i.e., heat-pipe and the non-heat-pipe areas, are different and these are given by Eqs. (9) and (10), respectively.…”

Section: Loop-heat-pipe (Lhp) Modelmentioning

confidence: 99%

“…Integrating the solar collectors (or called 'absorbers') into the building, which can be fixed to the south-facing wall or balcony of each flat unit [5,6], can shorten the distance of pipe runs, and thus enabling improvement of the building's aesthetic effect and requiring no additional area. For these distinct merits, many façade-based solar thermal systems have been developed and utilized in several building projects as a part of passive solar thermal façade to transfer heat through an insulated wall to a storage tank inside the building [7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

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Operational performance of a novel heat pump assisted solar façade loop-heat-pipe water heating system

Hong

Zhao

et al. 2015

Applied Energy

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“…The heat conduction equations applied to the two areas, i.e., heat-pipe and the non-heat-pipe areas, are different and these are given by Eqs. (9) and (10), respectively.…”

Section: Loop-heat-pipe (Lhp) Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Operational performance of a novel heat pump assisted solar façade loop-heat-pipe water heating system

Hong

Zhao

et al. 2015

Applied Energy

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“…Integration of an array of asymmetric heat pipes into a wall panel solves the dimensionality problem but results in an order-of-magnitude decrease in the diodicity. 3 Here, we report a phase-change thermal diode ( Fig. 1) that is inherently planar with an orientation-independent diodicity of g $ 100.…”

mentioning

confidence: 80%

Planar jumping-drop thermal diodes

Boreyko

Zhao

Chen

2011

Applied Physics Letters

209

193

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Phase-change thermal diodes rectify heat transport much more effectively than solid-state ones, but are limited by either the gravitational orientation or one-dimensional configuration. Here, we report a planar phase-change diode scalable to large areas with an orientation-independent diodicity of over 100, in which water/vapor is enclosed by parallel superhydrophobic and superhydrophilic plates. The thermal rectification is enabled by spontaneously jumping dropwise condensate which only occurs when the superhydrophobic surface is colder than the superhydrophilic surface.Analogous to the electronic diode, a thermal diode transports heat with a strong directional preference. Thermal diodes are useful in a variety of applications, such as heat distribution in spacecrafts, 1 thermal regulation during energy harvesting, 2 thermally adaptive building materials, 3 and potentially phononic computing. 4 The effectiveness of a thermal diode is measured by the rectification coefficient (diodicity),

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“…In the literature, there are many investigations that try to invent such a thermal diode [1][2][3][4][5][6][7][8][9][10][11]. Some of these investigations [1,2] concentrate on modifying and changing the microscopic structure of the material or affecting other material physical properties in order to create such a smart thermal insulation system.…”

Section: Introductionmentioning

confidence: 99%

“…Even if these microscopic structures succeeded they would produce high-cost thermal diodes that are very complicated in their manufacturing, operation, and maintenance. Other investigations [3][4][5][6][7][8][9][10][11] discuss the practical construction of mechanical, macroscopic level, thermal diodes. As an example, Rylewski [3] proposed a device to control heat transfer between two parallel walls.…”

Section: Introductionmentioning

confidence: 99%

Design of a Smart Thermal Insulation System

Al‐Nimr

Asfar

Abbadi

2009

Heat Transfer Engineering

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The present work aims to design a smart thermal insulation system. The smart system allows the passing of heat transfer in one direction while preventing its passing in the other direction. This system consists of two gaps separated by a thin movable partition. The two gaps have the same area and width. The partition has radiation emissivity very close to zero to exclude radiation heat transfer. The partition is free to move to either side depending on the driving force causing the motion. The first gap is filled with a fluid that has both high thermal conductivity and high thermal expansion properties, while the second gap is filled with a fluid that has very low thermal conductivity and very high thermal expansion properties. Each gap is connected by a tiny tube to its own small storage tank. Temperature and pressure sensors are used to provide signals to the programmable microcontroller in order to select and activate the desired insulation or conduction mode of the system.

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Characterisation of thermal diode panels for use in the cooling season in buildings

Cited by 67 publications

References 4 publications

Operational performance of a novel heat pump assisted solar façade loop-heat-pipe water heating system

Operational performance of a novel heat pump assisted solar façade loop-heat-pipe water heating system

Planar jumping-drop thermal diodes

Design of a Smart Thermal Insulation System

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