Thermal performance evaluation of glass window combining silica aerogels and phase change materials for cold climate of China

Li, Dong; Zhang, Chengjun; Li, Qing; Liu, Changyu; Arıcı, Müslüm; Wu, Yifan

doi:10.1016/j.applthermaleng.2019.114547

Cited by 89 publications

(39 citation statements)

References 48 publications

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“…Wang et al investigated a thermal buffer space for houses in severely cold regions [13]. A window consisting of phase change material (PCM) was developed to improve the heat storage performance of houses [14]. These methods have achieved remarkable results and have promoted the development of rural housing in severe cold regions.…”

Section: Existing Energy-saving Design Methods For Rural Houses In Sevmentioning

confidence: 99%

A Design Strategy for Energy-Efficient Rural Houses in Severe Cold Regions

Pan

Mei

2020

IJERPH

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In the past decade, Chinese urban areas have seen rapid development, and rural areas are becoming the next construction hotspot. The development of rural buildings in China has lagged behind urban development, and there is a lack of energy-efficient rural buildings. Rural houses in severe cold regions have the characteristics of large energy exchange, a long heating cycle, and low construction costs. Energy consumption is a crucial issue for rural houses in severe cold regions. How to balance the energy efficiency and building cost become a crucial problem. To solve this problem, we investigate the energy consumption of rural housing in cold regions, using Longquan Village in Heilongjiang Province, northeast China, as a case study. A low-energy design framework is established that considers the spatial layout, building type, enclosure system, and heating system. With the support of project funds, a demonstration house is constructed, and the energy savings performance of the building is investigated during the heating period. The results indicate that the energy savings rate of the demonstration house is 66%. The demonstration building enables local residents to learn construction methods for low-energy houses and promotes energy efficiency.

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Section: Existing Energy-saving Design Methods For Rural Houses In Sevmentioning

confidence: 99%

A Design Strategy for Energy-Efficient Rural Houses in Severe Cold Regions

Pan

Mei

2020

IJERPH

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“…Diversified dimensions of glazed units are required as a result of an architectural movement to improve the building aesthetics (P erez-Grande et al, 2005). However, the thermal performance of glazed units is much poorer than any other envelope structure of buildings (Flores Larsen et al, 2015;Liu et al, 2017;Loem et al, 2019), and thus glazed units have become a critical element in the energy consumption of buildings (Li et al, 2020a(Li et al, , 2020b. Therefore, more attention has been paid to the new energy-saving glass increasingly (Arıcı et al, 2015;Li et al, 2018aLi et al, , 2018bLi et al, , 2018c.…”

Section: Introductionmentioning

confidence: 99%

Thermal stress performance of glazed units contained phase change material

Zhou

Wang

et al. 2021

Energy Exploration & Exploitation

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The low heat transfer and high energy storage performance of phase change material (PCM) will improve the thermal performance of the PCM-glazed units. However, decreasing the heat transfer results in uneven thermal load on the surface of the PCM-glazed units, which is an important cause of thermal stress in such units, because the glass in glazed units is a fragile material, and then large thermal stress can result in cracks and possible fallout of the glazed units. To study the thermal stress distribution of PCM-glazed units, a method combined numerical simulation and experimental analysis was conducted. First, the heat transfer performance and thermal stress distribution of PCM-glazed units with PCM thicknesses between 3 and 11 mm were experimentally investigated. Results showed that the thermal performance of a glazed unit was improved by adding PCM, and the variation of thermal strain on its surface with a PCM-layer thickness of 7 mm was the smallest in five test facilities. Then, the thermal stress was numerically investigated regarding the PCM height and the aspect ratio of the PCM-glazed unit. The higher the PCM height, the greater the maximum strain. An aspect ratio of PCM-glazed units of 1.5 was recommended.

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“…Therefore, the use of PCMs to improve the energy efficiency of windows is justified. Numerous scientific works presenting the upgrading of transparent PCM partitions (Lia et al 2020; show a reduction in the daily glazing surface temperature fluctuations and a reduction in the expenditures on interior heating in winter and cooling in summer. Paper (Liu et al 2018) addresses the use of PCM in the interpane space of a multi-pane roof window.…”

Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Analysis of the Energy Efficiency of Transparent Partitions with a Thermal Storage Unit

Musiał¹

2020

J. Ecol. Eng.

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The article presents the results of experimental research and a mathematical analysis of the energy efficiency of a PCM-modified transparent partition. The study was carried out during the summer season and heating season for 5 months under temperate climate conditions in Rzeszów (Poland). The solution under investigation allows for short-term storage of heat within a building window, owing to the high value of melting/freezing enthalpy of approx. 185 J/g, and the phase change material (PCM) applied. The research was conducted in parallel over two identical windows, with only one of them being modernised with a phase change thermal storage unit. The obtained results showed the possibility of improving the thermal balance of the window by 9.99%, and a more favourable adjustment of gains from solar radiation to the profile of heat demand of the adjacent room by 15.02%, compared to the reference window. The obtained results also allowed the numerical model describing the non-stationary heat exchange within the phase change material to be verified, using the solution of a Stefan problem. The obtained model was created using the equations of finite difference method in the Matlab environment. The verified model is highly compatible with empirical quantities, and constitutes a useful tool for simulating the distribution of heat storage in a PCM storage unit over time. This allows the heat gains resulting from the use of the tested storage units in the building windows to be estimated.

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Thermal performance evaluation of glass window combining silica aerogels and phase change materials for cold climate of China

Cited by 89 publications

References 48 publications

A Design Strategy for Energy-Efficient Rural Houses in Severe Cold Regions

A Design Strategy for Energy-Efficient Rural Houses in Severe Cold Regions

Thermal stress performance of glazed units contained phase change material

Experimental and Numerical Analysis of the Energy Efficiency of Transparent Partitions with a Thermal Storage Unit

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