Barocaloric Material with High Thermal Conductivity for Room-Temperature Refrigeration

Zhu, Liutao; Dai, Zhaofeng; Gao, Yuanzhi; Wu, Dongxu; Wang, Changling; Zhao, Dongliang; She, Xiaohui; Ding, Yulong; Zhang, Xiaosong

doi:10.1007/s11630-023-1867-y

Cited by 5 publications

(3 citation statements)

References 25 publications

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“…This further suggests that methods of influencing S-S recrystallisation processes may result in different FOPT behaviour on cooling. It is important to note that we have presented an example of thermal hysteresis variation that is independent of sample geometry or the presence of additional inclusions, which have been discussed in the recent NPG literature [14,[30][31][32]. We have additionally demonstrated the strength of combining multiple imaging techniques in the study of BC materials, specifically in the ability to link microstructure with spatio-temporal thermal processes during their FOPTs.…”

Section: Discussionmentioning

confidence: 72%

Understanding variations of thermal hysteresis in barocaloric plastic crystal neopentyl glycol using correlative microscopy and calorimetry

Rendell-Bhatti,

Boldrin,

Dilshad

et al. 2024

J. Phys. Energy

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Plastic crystals (PCs) exhibit solid-solid order-disorder first-order phase transitions that are accompanied by large correlated thermal and volume changes. These characteristics make PCs promising barocaloric solid-state working bodies for heating and cooling applications. However, understanding the variation of transition temperatures and thermal hysteresis in PCs with cycling is critical if these materials are to replace traditional gaseous refrigerants. Here, for the archetypal barocaloric PC neopentyl glycol (NPG), we correlate microstructure obtained from scanning electron microscopy with local and total thermal changes at the phase transition from infra-red imaging and calorimetry, respectively. We outline an evolution in microstructure as NPG recrystallises during repeated thermal cycling through its solid-solid phase transition. The observed microstructural changes are correlated with spatially inhomogeneous heat transfer, yielding direct insight into the kinetics of the phase transition. Our results suggest that the interplay of these processes affects the undesirable thermal hysteresis and the nature of the kinetic steady-state microstructures that are stabilised during cycling between the ordered and disordered phases. These observations have implications for using NPG and other PCs as technologically relevant barocaloric materials and suggest ways in which the hysteresis in these types of materials may be modified.

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Section: Discussionmentioning

confidence: 72%

Understanding variations of thermal hysteresis in barocaloric plastic crystal neopentyl glycol using correlative microscopy and calorimetry

Rendell-Bhatti,

Boldrin,

Dilshad

et al. 2024

J. Phys. Energy

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“…With the development of the global economy, the total global energy consumption and carbon emissions are increasing, for which vigorously advocating energy conservation, emission reduction, and green living has become a focus of attention all over the world [1][2][3]. Driven by the policy of dual-carbon strategy, building energy efficiency has been increasingly emphasized [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Intelligent design of cold storage room system based on low temperature process

Yang

2024

Applied Mathematics and Nonlinear Sciences

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In this study, we address the intelligent design requirements of a cold storage system by developing a monitoring module for operational oversight, setting up the requisite hardware and software operating environment, and establishing a three-dimensional digital twin-based intelligent decision-making system with the digital twin model serving as the core framework. In order to seek the best path for the operation of the refrigeration system and achieve the lowest energy consumption in the refrigeration system, the dynamic planning algorithm is used to configure the refrigeration system power-consuming equipment and analyze the energy consumption of the system unit under different θW values. For the control algorithm of the electronic expansion valve in the application of a low-temperature process in cold storage, the PID algorithm is introduced and optimized using a variable domain fuzzy control algorithm to explore the degree of system energy saving and control accuracy under the two algorithmic control methods. Under the same working conditions, the fluctuation range of the PID control effect is ± 0.8 ℃, the fluctuation range of the fuzzy PID control effect is ± 0.4 ℃, the fluctuation range of fuzzy PID control superheats is smaller, the system superheat maintenance is more stable, which is in line with the design of an intelligent system for cold storage room.

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“…In this study we evaluate the colossal BC effect of jDSj = 778 J kg −1 K −1 in n-dodecane, driven by liquid-solid transition at ∼0.15 GPa and 295 K. This is the largest entropy change ever determined experimentally for a BC material to date. The jDSj values for selected state-of-the-art BC materials, 17,25,27,36,[43][44][45][46][47][48][49][50][51][52][53][54][55][56] are collated in Fig. 1.…”

Section: Introductionmentioning

confidence: 99%

Pressure-freezing of dodecane: exploring the crystal structures, formation kinetics and phase diagrams for colossal barocaloric effects in n-alkanes

Poręba,

Kicior

2023

RSC Adv.

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Barocaloric Material with High Thermal Conductivity for Room-Temperature Refrigeration

Cited by 5 publications

References 25 publications

Understanding variations of thermal hysteresis in barocaloric plastic crystal neopentyl glycol using correlative microscopy and calorimetry

Understanding variations of thermal hysteresis in barocaloric plastic crystal neopentyl glycol using correlative microscopy and calorimetry

Intelligent design of cold storage room system based on low temperature process

Pressure-freezing of dodecane: exploring the crystal structures, formation kinetics and phase diagrams for colossal barocaloric effects in n-alkanes

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