Passive cold and hot double-effect material

A passive, hot and cold technology used in passive energy utilization and materials to solve problems such as cooling and heating offsets, increased heat loads, and inability to function during heating seasons

Pending Publication Date: 2021-06-18
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This patent only considers the cooling season, and the coating, film, or structure provided can only be used for cooling, and cannot be used in the heating season, and will increase the heat load, which will cause the offset of cooling and heating during year-round operation

Method used

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Embodiment Construction

[0036] The technical solution of the present invention will be described in detail below with reference to the accompanying drawings.

[0037] Such as figure 1 As shown, a passive cold and heat duplex material of the embodiment of the present invention includes a selective emission layer 1 and a reflective layer 2 that are interconnected. The selective emission layer 1 achieves a double purpose of refrigeration and collection through the reversible change of the color. The reflective layer 2 is used to reflect the incident solar radiation.

[0038] The existing radiation refrigeration techniques and materials can only be applied to the refrigeration season and cannot work in the heating season and will increase the heat load in the heating season. To solve the offset problem of cooling and heating during the year, the passive cold and heat duplex material provided by the above embodiment includes a selective emission layer 1 and a reflective layer 2. In the refrigeration season: t...

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Abstract

The invention discloses a passive cold and hot double-effect material which can achieve the dual purposes of refrigeration and heat collection. The passive cold and hot double-effect material comprises a selective emission layer and a reflecting layer which are connected with each other; the selective emission layer achieves the dual purposes of refrigeration and heat collection through reversible change of colors; and the reflecting layer is used for reflecting incident solar radiation.

Description

Technical field [0001] The present invention belongs to the passive energy utilization and material field, and in particular, there is a passive cold and heat duplex material. Background technique [0002] The wide application of air conditioners has led to a large increase in energy consumption. The building consumes approximately 40% of world energy per year, of which the energy consumption of air conditioning systems exceeds 50%. How to reduce the energy consumption of the air conditioning system has become a hot spot study, and passive cooling technology has attracted extensive attention. [0003] The temperature of the space in the earth atmosphere is close to absolute zero, which can be used as a large capacity cold source. The atmosphere around the earth is transparent to the visible light, which is opaque to the infrared radiation of the vast majority band, but in the 8 ~ 13μm band, the absorption capacity of the atmosphere is very weak, so this band has a high transparen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24S23/70F25B23/00F24D15/00C08J5/18
CPCF24S23/70F25B23/003F24D15/00C08J5/18F24S2023/86C08J2300/00Y02E10/40Y02B10/20F24S70/225B32B2250/24B32B2264/102B32B27/18B32B2307/412B32B2307/416B32B2307/732B32B2264/1022B32B15/082B32B2264/303B32B2264/104B32B27/32B32B2264/1024B32B2307/402B32B2264/1025B32B2307/304B32B2264/1023B32B2264/403B32B27/365B32B2307/204B32B2264/1021B32B27/36B32B2270/00B32B27/283B32B15/09B32B2264/12B32B27/304B32B15/085B32B27/08
Inventor 张恺陈露芳唐赛红马明泉牛晓峰
Owner NANJING UNIV OF TECH
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