High-performance cooling and heat pumping based on fatigue-resistant elastocaloric effect in compression

Ahčin, Žiga; Dall’Olio, Stefano; Žerovnik, Andrej; Baškovič, Urban Žvar; Porenta, Luka; Kabirifar, Parham; Cerar, Jan; Zupan, Samo; Brojan, Miha; Klemenc, Jernej; Tušek, Jaka

doi:10.1016/j.joule.2022.08.011

Cited by 57 publications

(22 citation statements)

References 67 publications

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“…We show the relative COP C versus temperature and cooling power of the ionocaloric device compared with the performance of devices made using other caloric effects (14,18,19,(34)(35)(36)(37)(38)(39) (Fig. 3, B and C).…”

Section: Winmentioning

confidence: 99%

“…As the resistance is decreased and the selectivity of the membranes improves, higher efficiencies can be achieved for the same power output, leading to increased COP. (14,18,19,(34)(35)(36)(37)(38)(39). The data shown were curated from the literature where COP, temperature span, and cooling power were simultaneously reported.…”

Section: Winmentioning

confidence: 99%

“…(A) Electrodialysis cell used for the separation process of the ionocaloric cycle. (B and C) Relative Carnot efficiency versus temperature span (B) and relative Carnot efficiency versus cooling power per liter (C) of the device compared against that of other elastocaloric, magnetocaloric, electrocaloric, and electrochemical prototypes reported in literature(14,18,19,(34)(35)(36)(37)(38)(39). The data shown were curated from the literature where COP, temperature span, and cooling power were simultaneously reported.…”

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confidence: 99%

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Ionocaloric refrigeration cycle

Lilley

Prasher

2022

Science

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Developing high-efficiency cooling with safe, low–global warming potential refrigerants is a grand challenge for tackling climate change. Caloric effect–based cooling technologies, such as magneto- or electrocaloric refrigeration, are promising but often require large applied fields for a relatively low coefficient of performance and adiabatic temperature change. We propose using the ionocaloric effect and the accompanying thermodynamic cycle as a caloric-based, all–condensed-phase cooling technology. Theoretical and experimental results show higher adiabatic temperature change and entropy change per unit mass and volume compared with other caloric effects under low applied field strengths. We demonstrated the viability of a practical system using an ionocaloric Stirling refrigeration cycle. Our experimental results show a coefficient of performance of 30% relative to Carnot and a temperature lift as high as 25°C using a voltage strength of ~0.22 volts.

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Section: Winmentioning

confidence: 99%

Section: Winmentioning

confidence: 99%

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confidence: 99%

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Ionocaloric refrigeration cycle

Lilley

Prasher

2022

Science

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“…Compared with their magnetocaloric and electrocaloric counterparts, which usually require large fields that are expensive to apply, there are practical actuators that can be implemented for driving elastocaloric devices. Most elastocaloric devices are based on superelastic shape-memory alloys (27)(28)(29)(30)(31)(32)(33)(34)(35)(36), although prototypes using poly-mers have also been reported (37,38). The larger adiabatic temperature change (DT adiabatic ) recorded from direct measurements on caloric materials under a practical range of fields are from elastocaloric materials including NiMnTi and NiTi, which displayed DT adiabatic of 31.5 and 38.5 K, respectively (21,39).…”

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confidence: 99%

“…To enhance the temperature span of elastocaloric prototypes, cascading multiple single-stage schemes have been experimentally demonstrated in a four-stage device with a 27 K temperature span ( 31 ) and a three-stage fluid-based device using NiTi wires ( 30 ). Active regeneration has also been successfully implemented for elastocaloric cooling with a temperature span close to 20 K ( 33 , 34 ) and 31.3 K with 60 W cooling power recently ( 36 ). Unlike single-stage operation, active regeneration is characterized by a large temperature gradient across the caloric material at any phase of each cycle, where a small utilization factor is essential to maintain the enhanced temperature gradient.…”

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High-performance multimode elastocaloric cooling system

Qian,

Catalini,

Muehlbauer

et al. 2023

Science

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Developing zero–global warming potential refrigerants has emerged as one area that helps address global climate change concerns. Various high-efficiency caloric cooling techniques meet this goal, but scaling them up to technologically meaningful performance remains challenging. We have developed an elastocaloric cooling system with a maximum cooling power of 260 watts and a maximum temperature span of 22.5 kelvin. These values are among the highest reported for any caloric cooling system. Its key feature is the compression of fatigue-resistant elastocaloric nitinol (NiTi) tubes configured in a versatile multimode heat exchange architecture, which allows the harnessing of both high delivered cooling power and large temperature spans. Our system shows that elastocaloric cooling, which only emerged 8 years ago, is a promising direction for commercializing caloric cooling.

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Advanced Design and Manufacturing Approaches for Structures with Enhanced Thermal Management Performance: A Review

Sun,

Zhi,

Zhou

et al. 2024

Adv Materials Technologies

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Advanced design methods and manufacturing techniques are crucial for developing thermal management structures, essential for the efficient operation of complex equipment. This study provides a thorough review of design methodologies and advanced manufacturing technologies for thermal management materials and structures. It identifies key challenges and critically evaluates the integration of innovative design principles, such as biomimicry and topology optimization, into thermal management solutions. The analysis delves into the evolution of design theories and preparation techniques, with a specific focus on modern needs and research directions, particularly highlighting components fabricated using additive manufacturing and their effectiveness in meeting advanced thermal management requirements. Current research focuses on designing structures tailored to various cooling methods, including air‐cooling, liquid‐cooling, heat exchanger cooling, and heat pipe cooling. These designs utilize phase change materials, electrocaloric cooling, and thermoelectric cooling materials to achieve optimal thermal management performance. Additionally, emerging innovations like solid‐liquid mixed heat transfer and the elastocaloric effect are garnering increased interest. Enhancing the design of thermal management structures through rigorous numerical simulations is critical for improving engineering applicability. However, overcoming challenges related to the commercialization and practical utilization of these advanced structures remains a pressing need.

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High-performance cooling and heat pumping based on fatigue-resistant elastocaloric effect in compression

Cited by 57 publications

References 67 publications

Ionocaloric refrigeration cycle

Ionocaloric refrigeration cycle

High-performance multimode elastocaloric cooling system

Advanced Design and Manufacturing Approaches for Structures with Enhanced Thermal Management Performance: A Review

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