Dynamic thermal behavior of building using phase change materials for latent heat storage

Abstract

This study presents a two-dimensional model with a real size home composed of two-storey (ground and first floor spaces) separated by a slab, enveloped by a wall with rectangular section containing phase change material in order to minimize energy consumption in the buildings. The main objective of the phase change material-wall system is to decrease the temperature change from outdoor space before it reaches the indoor space during the daytime. The numerical approach uses effective heat capacity C eff model with realistic outdoor climatic conditions of Tlemcen city, Algeria. The numerical results showed that by using phase change material in wall as energy storage components may reduce the room temperature by about 6 to 7 °C of temperature depending on the floor level (first floor spaces or ground floor spaces).

Melting front propagation in a paraffin-based phase change material: Lab-scale experiment and simulations

“…Both models adopted effective heat capacity method to account for latent heat. The Gausian-like relation between temperature and effective heat capacity, which is often adopted by researchers, e. g. [16][17][18], was used as described by:…”

Numerical assessment of brick walls` use incorporating a phase change material towards thermal performance in buildings during a passive cooling strategy

“…Likewise, the PCM integration in building structures has become a very up-to-date topic. Note that PCM can be integrated into building materials in various ways [3][4][5][6]: either by direct incorporation, or impregnation, or manufacture of new panels with PCM to substitute conventional wallboards, or by incorporation of PCM capsules. Thus, the PCM must be thoroughly sealed inside cavities before being used in building elements to prevent the product's leakage during the melting process.…”

Effect of Phase Change Materials (PCMs) Integrated into a Concrete Block on Heat Gain Prevention in a Hot Climate

“…A PCM based thermal energy storage (PCMTS) as shown in Figure 1E performed optimally when placed inwards next to the gypsum wallboard, yielding an 11% reduction in heat flux in Kansas, USA [21]. A PCM configuration as shown in Figure 1F reported a temperature drop of 7 • C and a time lag of 6 h at maximum in the typical weather conditions of Tlemcen (western Algeria) [22]. been integrated into building materials by direct immersion into concrete blocks, direct mixing into insulations or integrating of micro-capsulated PCMs into concrete aggregates.…”

“…A PCM based thermal energy storage (PCMTS) as shown in Figure 1E performed optimally when placed inwards next to the gypsum wallboard, yielding an 11% reduction in heat flux in Kansas, USA [21]. A PCM configuration as shown in Figure 1F reported a temperature drop of 7 °C and a time lag of 6 h at maximum in the typical weather conditions of Tlemcen (western Algeria) [22]. Previously investigated configurations of integrating phase change materials (PCMs) in wall sections, namely: (A) a thin layer of PCM between two layers of insulation tested in Quebec City, Canada [17]; (B) two layers of PCM impregnated wallboards applied as an exterior and an interior layer with thick insulation in-between, tested in a continental climate [18]; (C) a PCM and an air cavity layer contained between two concrete blocks, tested in the cold climate of South East England, UK [19]; (D) a PCM layer installed near the internal wallboard having multi-layers of insulation boards and sheathing towards the exterior, tested in Kansas, USA [20]; (E) various configurations of gypsum wallboard, cardboard, PCM layer, insulation layer and OSB layer, tested in Kansas, USA [21]; and (F) a simple wall assembly of brick and concrete, applying a PCM layer in-between, tested in West Algeria [22].…”

“…Previously investigated configurations of integrating phase change materials (PCMs) in wall sections, namely: (A) a thin layer of PCM between two layers of insulation tested in Quebec City, Canada [17]; (B) two layers of PCM impregnated wallboards applied as an exterior and an interior layer with thick insulation in-between, tested in a continental climate [18]; (C) a PCM and an air cavity layer contained between two concrete blocks, tested in the cold climate of South East England, UK [19]; (D) a PCM layer installed near the internal wallboard having multi-layers of insulation boards and sheathing towards the exterior, tested in Kansas, USA [20]; (E) various configurations of gypsum wallboard, cardboard, PCM layer, insulation layer and OSB layer, tested in Kansas, USA [21]; and (F) a simple wall assembly of brick and concrete, applying a PCM layer in-between, tested in West Algeria [22]. Previously investigated configurations of integrating phase change materials (PCMs) in wall sections, namely: (A) a thin layer of PCM between two layers of insulation tested in Quebec City, Canada [17]; (B) two layers of PCM impregnated wallboards applied as an exterior and an interior layer with thick insulation in-between, tested in a continental climate [18]; (C) a PCM and an air cavity layer contained between two concrete blocks, tested in the cold climate of South East England, UK [19]; (D) a PCM layer installed near the internal wallboard having multi-layers of insulation boards and sheathing towards the exterior, tested in Kansas, USA [20]; (E) various configurations of gypsum wallboard, cardboard, PCM layer, insulation layer and OSB layer, tested in Kansas, USA [21]; and (F) a simple wall assembly of brick and concrete, applying a PCM layer in-between, tested in West Algeria [22].…”