Variable thermal insulation cooling material
JP2025134332APending Publication Date: 2025-09-17OSAKA GAS CO LTD
Patent Information
- Application Number
- JP2024032178
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-03-04
- Publication Date
- 2025-09-17
AI Technical Summary
Technical Problem
Conventional radiative cooling materials lack adequate heat insulating performance, especially when environmental conditions change, failing to effectively insulate or cool objects based on seasonal variations.
Method used
A variable insulating cooling material with a cooling layer that reflects solar radiation and an insulating fluid reservoir layer that can switch between expanded and contracted states, allowing adjustment of insulating performance while maintaining cooling efficiency.
Benefits of technology
The material can adapt to changing environmental conditions by varying insulating performance, providing effective cooling and insulation as needed, enhancing thermal management capabilities.
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Smart Images
Figure 2025134332000001_ABST
Abstract
To provide a variable thermal insulation cooling material that enables proper exhibition of cooling performance and permits favorable control of thermal insulation performance.SOLUTION: A variable thermal insulation cooling material comprises a cooling layer CP reflecting solar radiation that has a first optical property with a solar reflectance of 80% or more, and a thermal insulation fluid storage layer DC laminated on the side opposite to the incident side of solar radiation of the cooling layer CP, the thermal insulation fluid storage layer DC being configured such that a thermal insulation fluid R having thermal insulation properties can flow in and out of an internal space SP, the internal space SP having a flat shape along the cooling layer CP. The thermal insulation fluid storage layer DC is switchable between an expanded state in which, with the thermal insulation fluid R flowing into the internal space SP, the layer expands in the lamination direction, and a contracted state in which, with the thermal insulation fluid R discharged from the internal space SP, the layer contracts in the lamination direction.SELECTED DRAWING: Figure 1
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Citation Information
Patent Citations
Systems and methods for radiative cooling and heating
JP2018526599A