A non-volatile thermal switch for building energy savings

Miao, Ruijiao; Kishore, Ravi Anant; Kaur, Shalinder; Prasher, Ravi; Dames, Chris

doi:10.1016/j.xcrp.2022.100960

Cited by 5 publications

(4 citation statements)

References 34 publications

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“…The electrically actuated thermal switch proposed by Miao et al [14] was used in thermal management of buildings as dynamic building insulation. The thermal switch with SR =12.2 consisted of a Joule-heated shape memory alloy wire that either opened (during off state) or closed the gap between the heat source and the heat sink, being either outside or inside the building.…”

Section: Thermal Switchesmentioning

confidence: 99%

Thermal control devices and thermal circuits

Klinar,

Kitanovski

2024

J. Phys.: Conf. Ser.

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It is becoming evident that conventional thermal management methods like conventional thermal insulation and conventional thermal storage cannot meet the thermal control requirements of advanced, especially small systems with higher power densities or potentially transient, fluctuating, or migrating hot or cold spots, and for temperature-sensitive devices. This challenge is most evident in electronic components that experience degradation and loss of efficiency without constant and effective heat dissipation. To overcome these limitations, thermal control devices have emerged in various areas of thermal management. These small-scale devices provide non-linear, switchable, and active control of heat, similar to the way their electrical counterparts regulate electric current. Among others, notable thermal control devices include thermal conduits (which act as solid-state heat routers), thermal resistors (which provide thermal insulation), thermal switches (which actively control heat transfer through on-off states), and thermal diodes (which rectify heat currents). In this paper, we provide state of the art on the research activities and applications of thermal control devices.

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Section: Thermal Switchesmentioning

confidence: 99%

Thermal control devices and thermal circuits

Klinar,

Kitanovski

2024

J. Phys.: Conf. Ser.

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“…Thermal management devices with variable thermal resistance offer a potential solution to the aforementioned conflicting challenges, as they can both retain and dissipate heat effectively. 27 , 40 However, their further application is hindered by limitations such as low switching ratio (SR), high costs, and complex structures. The SR refers to the ratio of thermal conductance between the ON and OFF states of the thermal switch, which is a critical performance indicator.…”

Section: Introductionmentioning

confidence: 99%

“…46 The thermal switch showed a switchable change in the thermal resistance of the interface by changing the amount of fullerene in the sandwich structure, resulting in an enhancement of about a factor of two in the interfacial thermal resistance during the ON/OFF State. Thermal switching based on macroscopic interfacial contact conditions provides higher SR. 40 Thermally conductive interface with or without contact depends on the different thermal expansion of different materials. 47 However, the thermal expansion of materials is typically minimal, requiring a significant total length of about 10 cm for a mere 0.1 mm variation.…”

Section: Introductionmentioning

confidence: 99%

Cavity structure-based active controllable thermal switch for battery thermal management

Wang,

Guo,

et al. 2023

iScience

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“…Nonlinear heat transfer, in contrast to conventional heat transfer, represents a phenomenon where the heat flux does not exhibit a linear dependence on the temperature difference between two reservoirs . It serves as the underlying mechanism for various nonlinear thermal circuit components, including thermal switches, − thermal diodes, − thermal regulators, − and negative differential thermal conductance (NDTC) devices. ,− Similar to their electronic counterparts, nonlinear thermal circuits can potentially enable diverse applications such as renewable energy conversion and harvesting, ,, thermal energy storage, personal and building thermal comfort, ,− spacecraft thermal management, , and cooling of electronic devices and data centers. , Developing high-performance nonlinear thermal components holds significant potential in tackling global challenges such as the climate crisis, energy shortages, carbon emissions, and environmental pollution.…”

mentioning

confidence: 99%

Phonon Scattering Engineered Unconventional Thermal Radiation at the Nanoscale

Feng,

Yang,

Ruan

2023

Nano Lett.

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We show that engineering phonon scattering, such as through isotope enrichment and temperature modulation, offers the potential to achieve unconventional radiative heat transfer between two boron arsenide bulks at the nanoscale, which holds promise in applications for nonlinear thermal circuit components. A heat flux regulator is proposed, where the temperature window for stabilized heat flux exhibits a wide tunability through phonon scattering engineering. Additionally, we propose several other nonlinear thermal radiative devices, including a negative differential thermal conductance device, a temperature regulator, and a thermal diode, all benefiting from the design space enabled by isotope and temperature engineering of the phonon linewidth. Our work highlights the capability of temperature and isotope engineering in designing and optimizing nonlinear radiative thermal devices and demonstrates the potential of phonon engineering in thermal radiative transport.

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A non-volatile thermal switch for building energy savings

Cited by 5 publications

References 34 publications

Thermal control devices and thermal circuits

Thermal control devices and thermal circuits

Cavity structure-based active controllable thermal switch for battery thermal management

Phonon Scattering Engineered Unconventional Thermal Radiation at the Nanoscale

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