Micro-/macro-level optimization of phase change material panel in building envelope

Liu, Yan; Wang, Mengyuan; Cui, Hongzhi; Yang, Linlin; Liu, Jiaping

doi:10.1016/j.energy.2020.116932

Cited by 32 publications

(2 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The ambient temperature of a particular day in Beijing city is selected as the input condition. The boundary conditions of the external surfaces of the building are set as the second type [37]. As mentioned before, the external envelope used in this study is extruded polystyrene.…”

Section: Initialization and Boundary Conditionsmentioning

confidence: 99%

The Effects of Thickness and Location of PCM on the Building’s Passive Temperature-Control–A Numerical Study

Shi,

Ren,

Zhang

et al. 2024

ENERGY

View full text Add to dashboard Cite

Building energy consumption and building carbon emissions both account for more than 20% of their total national values in China. Building employing phase change material (PCM) for passive temperature control shows a promising prospect in meeting the comfort demand and reducing energy consumption simultaneously. However, there is a lack of more detailed research on the interaction between the location and thickness of PCM and indoor natural convection, as well as indoor temperature distribution. In this study, the numerical model of a passive temperature-controlled building integrating the developed PCM module is established with the help of ANSYS. In which, the actual weather condition of Beijing city is set as the boundary conditions and the indoor natural convection is simulated with the consideration of radiation model. The effects of PCM's thickness and location on the internal temperature field are analyzed and discussed. The results show that the room could maintain within the human comfort temperature range with the longest ratio of 94.10% and the shortest ratio of 51.04% as integrating PCM. In comparison, the value is only 26.70% without PCM. The room's maximum temperature fluctuation can also be improved; it could be lowered by 64.4% compared to the normal condition. When the quantity of PCM is sufficient, further increasing the PCM amount results in a temperature fluctuation reduction of less than 0.1°C and does not increase the comfort time. Placing PCM on the wall induces an apparent variation in indoor temperature along the vertical direction. Conversely, placing PCM on the roof can lead to a heat transfer rate difference of up to seven times. The optimal placement of PCM depends on the difference between the environmental and phase change temperatures. If the difference is positive, placing PCM on the roof is more effective; conversely, the opposite holds. According to the results over the entire cycle, PCM application on vertical walls yields better performance. The significant difference in natural convection caused by the same thickness of PCM but different application positions, coupled with the influence of air movement on the melting and solidification of PCM, further impacts indoor temperature fluctuations and comfort. This study can provide guidance for the application location and thickness of PCM, especially for scenarios where temperature regulation is required at a specific time.

show abstract

Section: Initialization and Boundary Conditionsmentioning

confidence: 99%

The Effects of Thickness and Location of PCM on the Building’s Passive Temperature-Control–A Numerical Study

Shi,

Ren,

Zhang

et al. 2024

ENERGY

View full text Add to dashboard Cite

show abstract

“…In [32], the thermal behavior has been studied using EnergyPlus (9.4.0, funded by the U.S. Department of Energy's Building Technologies Office, USA), to predict the expected temperatures achieved using this insulation; in [33], the characteristic temperature values have been found using a novel approach, based on numerical analysis, with similar results. Other areas of the literature focus on maximizing latent heat, experimenting with different thickness, as in [34], or combining it with different construction materials to obtain optimal insulation values [35]. A key aspect, not covered thoroughly though, is how heat is transferred through the insulating walls [36], according to the location in the wall; authors claim to have found an optimal model combining different layers of PCM, air and other construction materials.…”

mentioning

confidence: 99%

Effect of Insulation on the Energy Demand of a Standardized Container Facility at Airports in Spain under Different Weather Conditions

Álvarez-Feijoo¹,

Orgeira-Crespo

Arce³

et al. 2020

Energies

View full text Add to dashboard Cite

Airports, broadly spread world-wide, present continuously increasing energy demands for heating and cooling purposes. Relocatable facilities within them could be built on recycling shipping containers provided with the right insulation layer, to reduce the outstanding consumption of the heating, ventilation and air conditioning systems (HVAC). This research focuses on studying the effect of added insulation on the thermal performance of a construction in the scope of an airport facility, based on a recycled shipping container. Passive heating and cooling insulation strategies have shown good results in terms of energy savings. A series of simulations were performed along six different Spanish airports locations, selected to represent several climate conditions. Temperature evolution inside the container, and energy demands of the HVAC system were obtained to show that the insulation provided by phase change materials (PCM) is performing better than traditional insulation, or a raw container. Although there are slight behavior differences according to the climate, PCM can increase inside temperature even with no HVAC under certain circumstances.

show abstract

A parametric model on thermal evaluation of building envelopes containing phase change material

et al. 2023

View full text Add to dashboard Cite

Micro-/macro-level optimization of phase change material panel in building envelope

Cited by 32 publications

References 43 publications

The Effects of Thickness and Location of PCM on the Building’s Passive Temperature-Control–A Numerical Study

The Effects of Thickness and Location of PCM on the Building’s Passive Temperature-Control–A Numerical Study

Effect of Insulation on the Energy Demand of a Standardized Container Facility at Airports in Spain under Different Weather Conditions

A parametric model on thermal evaluation of building envelopes containing phase change material

Contact Info

Product

Resources

About