Properties of Hydrogel-Wood Composite as a New Thermochromic Glazing Material

Sai LIU; Hau Him LEE; Yuwei DU; Chi Yan TSO

Properties of Hydrogel-Wood Composite as a New Thermochromic Glazing Material

Sai LIU, Hau Him LEE, Yuwei DU, Chi Yan TSO^*

^*Corresponding author for this work

School of Energy and Environment

Research output: Conference Papers › RGC 32 - Refereed conference paper (without host publication) › peer-review

Abstract

Recently, thermal-response hydrogel smart window is widely studied because of its high luminous transmittance (τ_lum) and high solar modulation ability (Δτ_sol). However, its liquid state is undesirable for window applications. Wood has strong mechanical strength and low thermal conductivity. Due to the unique features of the thermal-response hydrogel and wood, a thermochromic hydrogel wood composite (HWC) that can smartly regulate solar irradiation is proposed by impregnating a thermal-response hydrogel into delignified wood. The novel HWC demonstrates advanced optical properties (i.e. τ_lum = 83% and 40% at the cold transparent and hot opaque states & Δτ_sol = 38%) and low transition temperature (i.e. T_c = 23 ºC). Moreover, the HWC is highly flexible and easily fitted into existing windows frames. Overall, the HWC with its impressive features shows great promise for energy-efficient material for smart windows in buildings.

Original language	English
Publication status	Published - 21 Jun 2021
Event	17th Healthy Buildings Conference - Online, Oslo, Norway Duration: 21 Jun 2021 → 23 Jun 2021 https://hb2021-europe.org/downloads.html https://hb2021-europe.org/welcome.html

Conference

Conference	17th Healthy Buildings Conference
Place	Norway
City	Oslo
Period	21/06/21 → 23/06/21
Internet address	https://hb2021-europe.org/downloads.html https://hb2021-europe.org/welcome.html

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy
SDG 12 Responsible Consumption and Production

Research Keywords

Smart windows
Transparent woods
Thermochromism
Energy-efficient buildings

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@conference{813dc839a81344eb888d9d238a5d19da,

title = "Properties of Hydrogel-Wood Composite as a New Thermochromic Glazing Material",

abstract = "Recently, thermal-response hydrogel smart window is widely studied because of its high luminous transmittance (τlum) and high solar modulation ability (Δτsol). However, its liquid state is undesirable for window applications. Wood has strong mechanical strength and low thermal conductivity. Due to the unique features of the thermal-response hydrogel and wood, a thermochromic hydrogel wood composite (HWC) that can smartly regulate solar irradiation is proposed by impregnating a thermal-response hydrogel into delignified wood. The novel HWC demonstrates advanced optical properties (i.e. τlum = 83% and 40% at the cold transparent and hot opaque states & Δτsol = 38%) and low transition temperature (i.e. Tc = 23 ºC). Moreover, the HWC is highly flexible and easily fitted into existing windows frames. Overall, the HWC with its impressive features shows great promise for energy-efficient material for smart windows in buildings.",

keywords = "Smart windows, Transparent woods, Thermochromism, Energy-efficient buildings",

author = "Sai LIU and LEE, {Hau Him} and Yuwei DU and TSO, {Chi Yan}",

year = "2021",

month = jun,

day = "21",

language = "English",

note = "17th <i>Healthy Buildings</i> Conference ; Conference date: 21-06-2021 Through 23-06-2021",

url = "https://hb2021-europe.org/downloads.html, https://hb2021-europe.org/welcome.html",

}

TY - CONF

T1 - Properties of Hydrogel-Wood Composite as a New Thermochromic Glazing Material

AU - LIU, Sai

AU - LEE, Hau Him

AU - DU, Yuwei

AU - TSO, Chi Yan

PY - 2021/6/21

Y1 - 2021/6/21

N2 - Recently, thermal-response hydrogel smart window is widely studied because of its high luminous transmittance (τlum) and high solar modulation ability (Δτsol). However, its liquid state is undesirable for window applications. Wood has strong mechanical strength and low thermal conductivity. Due to the unique features of the thermal-response hydrogel and wood, a thermochromic hydrogel wood composite (HWC) that can smartly regulate solar irradiation is proposed by impregnating a thermal-response hydrogel into delignified wood. The novel HWC demonstrates advanced optical properties (i.e. τlum = 83% and 40% at the cold transparent and hot opaque states & Δτsol = 38%) and low transition temperature (i.e. Tc = 23 ºC). Moreover, the HWC is highly flexible and easily fitted into existing windows frames. Overall, the HWC with its impressive features shows great promise for energy-efficient material for smart windows in buildings.

AB - Recently, thermal-response hydrogel smart window is widely studied because of its high luminous transmittance (τlum) and high solar modulation ability (Δτsol). However, its liquid state is undesirable for window applications. Wood has strong mechanical strength and low thermal conductivity. Due to the unique features of the thermal-response hydrogel and wood, a thermochromic hydrogel wood composite (HWC) that can smartly regulate solar irradiation is proposed by impregnating a thermal-response hydrogel into delignified wood. The novel HWC demonstrates advanced optical properties (i.e. τlum = 83% and 40% at the cold transparent and hot opaque states & Δτsol = 38%) and low transition temperature (i.e. Tc = 23 ºC). Moreover, the HWC is highly flexible and easily fitted into existing windows frames. Overall, the HWC with its impressive features shows great promise for energy-efficient material for smart windows in buildings.

KW - Smart windows

KW - Transparent woods

KW - Thermochromism

KW - Energy-efficient buildings

M3 - RGC 32 - Refereed conference paper (without host publication)

T2 - 17th <i>Healthy Buildings</i> Conference

Y2 - 21 June 2021 through 23 June 2021

ER -

Properties of Hydrogel-Wood Composite as a New Thermochromic Glazing Material

Abstract

Conference

UN SDGs

Research Keywords

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