RADIATIVE COOLING MATERIAL BASED ON POROUS NANOPARTICLES AND RADIATIVE COOLING DEVICE USING THE SAME

• Main Authors: PARK SU JIN, SEO SEOK BEOM, JEONG SUN HO, KIM SUN KYUNG
• Format: Patent
• Language: English; Korean
• Published: 12.06.2024
• Subjects: ADHESIVES; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; BLASTING; CHEMISTRY; COMBINED HEATING AND REFRIGERATION SYSTEMS; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OFGENERAL APPLICATION; DYES; GENERAL PROCESSES OF COMPOUNDING; HEAT EXCHANGE IN GENERAL; HEAT PUMP SYSTEMS; HEATING; LIGHTING; LIQUEFACTION SOLIDIFICATION OF GASES; MANUFACTURE OR STORAGE OF ICE; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE; MECHANICAL ENGINEERING; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; POLISHES; REFRIGERATION MACHINES, PLANTS OR SYSTEMS; REFRIGERATION OR COOLING; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS; WEAPONS; WORKING-UP

본 발명은 공극 나노 입자 기반의 복사 냉각 물질 및 이를 이용한 복사 냉각 소자에 관한 것으로, 본 발명의 일실시예에 따른 공극 나노 입자 기반의 복사 냉각 물질은 복수의 공극 나노 입자 및 바인더 분자를 포함하고, 상기 복수의 공극 나노 입자는 유전체 입자에 기반하여 입사 태양광을 반사하고, 중적외선을 흡수 및 복사하되, 상기 유전체 입자 내부에 공극(air gap)을 포함하며, 상기 공극에 기반하여 상기 입사 태양광에 대한 반사율이 증가되고, 상기 바인더 분자에 의해 적층 구조 분포를 가지며, 상기 바인더 분자는 분자수 및 크기에 기반하여 상기 복수의 공극 나노 입자 간의 결합력을 제어하여 상기 적층 구조 분포를 결정할 수 있다. The present disclosure relates to a porous nanoparticle-based radiative cooling material and a radiative cooling device using the same. The porous nanoparticle-based radiative cooling material according to one embodiment of the present disclosure includes a plurality of porous nanoparticles and binder molecules, wherein the porous nanoparticles reflect incident sunlight and absorb and radiate mid-infrared light, pores are included inside dielectric particles, reflectance for the incident sunlight and mid-infrared emissivity are increased based on the pores, and a laminated structure distribution is formed by the binder molecules.