COMPOSITES WITH ENHANCED THERMAL CONDUNCTIVITY AND ELECTROCALORIC STRENGTH FOR HIGH-POWER REFRIGERATION APPLICATIONS

Li Qiang; Du Feihong; Feng Jiawang; Shi Junye; Chen Jiangping; Qian Xiaoshi

doi:10.19912/j.0254-0096.tynxb.2023-0384

PDF(2253 KB)

Acta Energiae Solaris Sinica ›› 2024, Vol. 45 ›› Issue (7) : 420-426. DOI: 10.19912/j.0254-0096.tynxb.2023-0384

COMPOSITES WITH ENHANCED THERMAL CONDUNCTIVITY AND ELECTROCALORIC STRENGTH FOR HIGH-POWER REFRIGERATION APPLICATIONS

Li Qiang¹, Du Feihong¹, Feng Jiawang¹, Shi Junye¹, Chen Jiangping¹, Qian Xiaoshi^1,2

Author information +

History +

Abstract

Here the electrocaloric effect （ECE） and thermal conductivity of polymer-based electrocaloric （EC） materials are improved by means of the preparation of BaZr_0.2Ti_0.8O₃-P（VDF-TrFE-CFE） nanocomposites. In addition, high-power refrigeration devices based on fluid-solid conjugated heat transfer were designed and numerical simulations were carried out to evaluate the cooling capacity and efficiency. The results show that T-BZT-10% （with a BZT mass fraction of 10%） has significantly ECE and heat transfer performance than that of the base terpolymer. Simulation results about the devices show that at a temperature span of 10 K, a system with T-BZT-10% as the core refrigeration element can achieve a cooling power density of 31.0 W/cm³ and total cooling power of 1060.4 W （more than a 10-fold cooling power improvement than that of the base EC device） with a COP of 5.2.

Key words

nanocomposites / numerical simulation / thermal conductivity / electrocaloric effect / refrigeration device

Cite this article

EndNote

Ris (Procite)

Bibtex

Download Citations

Li Qiang, Du Feihong, Feng Jiawang, Shi Junye, Chen Jiangping, Qian Xiaoshi. COMPOSITES WITH ENHANCED THERMAL CONDUNCTIVITY AND ELECTROCALORIC STRENGTH FOR HIGH-POWER REFRIGERATION APPLICATIONS[J]. Acta Energiae Solaris Sinica. 2024, 45(7): 420-426 https://doi.org/10.19912/j.0254-0096.tynxb.2023-0384

References

[1] SHERMAN P, LIN H Y, MCELROY M.Projected global demand for air conditioning associated with extreme heat and implications for electricity grids in poorer countries[J]. Energy and buildings, 2022, 268: 112198.
[2] 许文华, 李惟毅, 郭强. 考虑环境影响的CO₂/低GWP混合工质热泵热水器工质优选[J]. 太阳能学报, 2018, 39(1): 84-89.
XU W H, LI W Y, GUO Q.Working fluids selecting of CO₂ blends with low-gwp(global warming potential)heat pump system considering impact of environment[J]. Acta energiae solaris sinica, 2018, 39(1): 84-89.
[3] 胡亚飞, 吕杰, 韩涛, 等. 基于R410A制冷剂的空气源燃气热泵系统制冷特性[J]. 太阳能学报, 2023, 44(3): 401-408.
HU Y F, LYU J, HAN T, et al.Performance characteristics of air source gas engine-driven heat pump system with r410a refrigerant for cooling application[J]. Acta energiae solaris sinica, 2023, 44(3): 401-408.
[4] 马瑞泽, 张景新, 蒋祎璠, 等. 太阳能PV/T热泵辅助分布式餐厨垃圾能源转化系统研究[J]. 太阳能学报, 2022, 43(8): 137-142.
MA R Z, ZHANG J X, JIANG Y F, et al.Research on distributed food waste-to-energy system coupled with PV/T heat pump[J]. Acta energiae solaris sinica, 2022, 43(8): 137-142.
[5] TU\VSEK J, ENGELBRECHT K, ERIKSEN D, et al. A regenerative elastocaloric heat pump[J]. Nature energy, 2016, 1(10): 16134.
[6] QIAN S X, GENG Y L, WANG Y, et al.A review of elastocaloric cooling: materials, cycles and system integrations[J]. International journal of refrigeration, 2016, 64: 1-19.
[7] LI B, KAWAKITA Y, OHIRA-KAWAMURA S, et al.Colossal barocaloric effects in plastic crystals[J]. Nature, 2019, 567(7749): 506-510.
[8] NEESE B, CHU B J, LU S G, et al.Large electrocaloric effect in ferroelectric polymers near room temperature[J]. Science, 2008, 321(5890): 821.
[9] SHI J Y, HAN D L, LI Z C, et al.Electrocaloric cooling materials and devices for zero-global-warming-potential, high-efficiency refrigeration[J]. Joule, 2019, 3(5): 1200-1225.
[10] QIAN X S, HAN D L, ZHENG L R, et al.High-entropy polymer produces a giant electrocaloric effect at low fields[J]. Nature, 2021, 600(7890): 664-669.
[11] GU H M, QIAN X S, LI X Y, et al. A chip scale electrocaloric effect based cooling device[J]. Applied physics letters, 2013, 102(12): 122904-1-122904-4.
[12] MA R J, ZHANG Z Y, TONG K, et al.Highly efficient electrocaloric cooling with electrostatic actuation[J]. Science, 2017, 357(6356): 1130-1134.
[13] SAJID M, HASSAN I, RAHMAN A.An overview of cooling of thermoelectric devices[J]. Renewable and sustainable energy reviews, 2017, 78: 15-22.
[14] MENG Y, ZHANG Z Y, WU H X, et al.A cascade electrocaloric cooling device for large temperature lift[J]. Nature energy, 2020, 5: 996-1002.
[15] CHU B.PVDF-based copolymers, terpolymers and their multi-component material systems for capacitor applications[D]. Philadelphia: The Pennsylvania State University, 2008.
[16] ZHANG G Z, FAN B Y, ZHAO P, et al.Ferroelectric polymer nanocomposites with complementary nanostructured fillers for electrocaloric cooling with high power density and great efficiency[J]. ACS applied energy materials, 2018, 1(3): 1344-1354.