Numerical study on the thermal performance of lightweight temporary building integrated with phase change materials

Zhu, Li; Yang, Yang; Chen, Sarula; Sun, Yong

doi:10.1016/j.applthermaleng.2018.03.103

Cited by 72 publications

(21 citation statements)

References 46 publications

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“…), will affect the heat conduction through the wall section due to the different thermal resistance of each material. For example, the optimum position of the PCM layer was obtained close to the indoor environment in [19,20,26,40,49], in which the walls were made of insulation layers. This might be attributed to the effect of the insulation layers on reducing the required cooling from the indoor environment for the PCM freezing process.…”

Section: Discussionmentioning

confidence: 99%

“…L. Zhu et al [20] numerically investigated the influence of the position, thickness, and orientation of the PCMs layer on the indoor thermal discomfort during summer in north China. A model room, i.e., 2400 × 2400 × 2400 mm, was used and made of 100 mm thick modular prefabricated EPS panels, covered by two 0.5 mm thick colour steel sheets on each side.…”

Section: Gounni and El Alamimentioning

confidence: 99%

“…However, different results were achieved. For instance, the optimum position was achieved in the internal layer of the wall [18][19][20], in the external layer of the wall [21,22] or within the wall section (i.e., in the middle, close to internal surface or close to external surface) [7,[23][24][25][26][27]. The current work, therefore, aims at reviewing the previously conducted studies, which examined PCMs in different positions within the buildings' walls to locate the optimum position of PCMs, and identify the parameters that have an impact on achieving a variety of PCMs' optimum position in these studies.…”

Section: Introductionmentioning

confidence: 99%

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Phase Change Materials (PCMs) and Their Optimum Position in Building Walls

2020

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More than half of the energy consumption in buildings is utilized for the heating and/or cooling of the indoor environment. The building envelope plays a key role in controlling the effects of external weather and, therefore, is linked with many passive design strategies. Thermal energy storage (TES) and phase change materials (PCMs) are efficient techniques, which can store a high density of thermal energy. The PCMs attract many researchers to implement them in the components of buildings for thermal management. In building walls, they were implemented in different positions and have achieved different results. This paper aims to review the related literature that examines PCMs’ application in different positions within the building walls to locate their optimum position and the influential parameters. It was found that the optimum positions of PCMs are highly dependent on performing a daily complete melting/freezing cycle to be ready for the following day. Many parameters can influence this, including climate and weather conditions and the application target, PCMs’ melting temperature and heat of fusion, PCMs’ amount, the thermal properties of the wall’s materials, a mechanical heating/cooling or free-running indoor environment, and wall orientation. An optimization process using the simulation tools is suggested so that the optimum position of the PCMs can be located.

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Section: Discussionmentioning

confidence: 99%

Section: Gounni and El Alamimentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Phase Change Materials (PCMs) and Their Optimum Position in Building Walls

2020

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“…They have also reported that the PCM that has higher transition temperature performed better in hot desert climatic conditions. Zhu et al [17] have carried out a numerical investigation using ANSYS FLUENT on a light-weight building that involves incorporation of PCM suitable for the summer climate prevailing at Tianjin city in China. The simulation results obtained for 24 hours during a summer day have revealed that positioning of PCM layer close to the inner surface helps to reduce indoor temperature and yields better thermal comfort.…”

Section: Introductionmentioning

confidence: 99%

Thermal management analysis of PCM integration in building using a novel performance parameter - PCM effectiveness index

Prakash¹,

Ranganathan

Vincent³

et al. 2022

THERM SCI

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Integration of phase change material (PCM) in walls and roof of a building is done to augment human comfort at places where variation of local diurnal temperature of ambient air is extensive. An exhaustive tool to study on year-round thermal effect due to solar radiation falling on a building is generally required to identify the correct PCM and the portion of a year that warrants better thermal management. The transient behavior associated with PCM heat transfer through building roof and walls vary in accordance with location and orientation of the building and the prevailing seasons. Hence, it becomes necessary to carry out a detailed analysis with the integration of PCM layers and to collect information with suitable theoretical approach as experimental study on energy performance of a building is time-consuming and expensive. In this paper, a three-dimensional building model has been developed and analyzed using ANSYS FLUENT for performing CFD analysis for comparing two identical buildings with and without PCM located at Chennai. PCM was integrated in roof and walls of the building and analysis was carried out for different days of the year. A novel concept of PCM effectiveness index is introduced to measure the thermal performance due to PCM integration in building. This novel concept is useful for building engineers to measure the effectiveness of PCM integration and to select the correct PCM for thermal management in buildings at any location and time of the year.

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“…Binalarda sıva, dolgu malzemeleri gibi yapı malzemelerinin içine karıştırılarak ya da alçı levhalar gibi yapı malzemelerinde kullanılmaktadır. FDM'lerin binalarda kullanımı ile ilgili, yaz aylarında soğutma yükünü düşürmek için çalışmalar yapılmıştır [18][19][20][21][22][23][24][25]. Bu çalışmalarda faz değiştiren malzemenin tipi, katman kalınlığı, katmanın duvar içindeki pozisyonu, erime sıcaklığı vb.…”

Section: Introductionunclassified

The Effect of Floating Floor and Phase Changing Materials on Energy Efficiency and Comfort Conditions in Individual Heating

2020

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Günümüzde ülkelerin gelişmişlik düzeylerine ilişkin tüm sınıflandırmalarda enerji önemli bir yer tutmaktadır. Ülkelerin geleceğe yönelik yaptığı bütün planlamalarda enerji kullanım oranı etkin bir parametre olarak göz önüne alınmaktadır. Buna bağlı olarak enerji kullanımının düşürülmesi amacıyla yapılan bilimsel çalışmalar önem kazanmaktadır. Bu çalışmada, ara kat döşemelerinde yalıtım ve faz değiştiren malzeme (FDM) kullanılmasının enerji verimliliği ve konfor koşulları üzerindeki etkileri incelenmiştir. Bodrum, zemin ve iki normal kattan oluşan örnek bir binada eş zamanlı olarak ısıtılan ve ısıtılmayan ortamlardan oluşan farklı senaryolar üzerinde çalışma yapılmıştır. Bu senaryolarda yalıtımsız, yalıtımlı ve yalıtıma ek FDM içeren bir katmanın olduğu üç farklı döşeme tipi kullanılarak, bu parametrelerin ortamların ısı yüklerine, ortam sıcaklığına ve enerji kullanımına etkileri incelenmiştir. Çalışmada elde edilmiş olan bulgulara göre; döşeme ve tavanda yalıtım ve FDM kullanılması ile ortamların ısı yükü düşmektedir. Aynı zamanda ortam sıcaklıklarının ayar sıcaklığına daha yakın olması ile birlikte ısıl konfor koşullarının iyileşmekte olduğu belirlenmiştir. Çalışma sonuçları göstermektedir ki; döşeme ve tavanlarda yalıtım ve FDM kullanımı, yıllık enerji kullanımını aşağıya çekmekte ve enerji verimliliğinde önemli bir artış sağlamaktadır.

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Numerical study on the thermal performance of lightweight temporary building integrated with phase change materials

Cited by 72 publications

References 46 publications

Phase Change Materials (PCMs) and Their Optimum Position in Building Walls

Phase Change Materials (PCMs) and Their Optimum Position in Building Walls

Thermal management analysis of PCM integration in building using a novel performance parameter - PCM effectiveness index

The Effect of Floating Floor and Phase Changing Materials on Energy Efficiency and Comfort Conditions in Individual Heating

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