Building envelope is a key element in providing adequate energy and thermal comfort performance to buildings. In this regard, improvement solutions are implemented recent studies that focus on new techniques methods. The main adopted context discussed identify modern effective methods with particular phase change materials (PCMs). Incorporating PCMs building construction booming technology, owing their enhancement potential of storing releasing heat during transition. This work highlights...

Phase change materials (PCMs)-enhanced building envelope has received much attention in recent years as an effective solution to enhance thermal performance. Nevertheless, minimal experimental studies considering PCM influential aspects full arrangement are found the literature against many numerical studies. This paper aims quantify indoor temperature improvement and energy-saving when is passively-incorporated into a under non-ventilated conditions. The average reduction (AITR), load...

Photovoltaic modules are impacted by overheating, which degrades their conversion efficiency and shortens lifespan. This work attempts to study the cooling potential for a hybrid photovoltaic/thermal (PV/T) system employing CuO Fe2O3 nanofluids with 0.2% 0.3% volume fractions (φ), circulated in heat exchanger attached at rear side of PV module lower temperature cells improve its energy exergy efficiencies. Consequently, 2D numerical model was analysed given balance across PV/T layers, is...

This study presents the experimental results of concrete bricks based macroencapsulated phase change material (PCM) in different capsule designs (circular, square and rectangular cross-sections). Eight (including a reference brick without PCM) are fabricated, their thermal performance is tested under hot summer conditions Al Amarah city, Iraq. The considered several indicators such as interior maximum temperature reduction (MTR), decrement factor (DF) time lag (TL) to compared among addition...

Phase change materials (PCMs) can beneficially work as a successful thermal energy storage medium in different applications. PCMs have shown remarkable enhancement building energy-saving and comfort hot locations. In this paper, the behaviour of PCM-enhanced thermally-poor envelope is studied experimentally. To aim, two identical rooms, one loaded with PCM (PCM room) other without (reference room), are built tested under severe climate Al Amarah city, Iraq. Previously examined parameters,...

Combined phase change material (PCM) and thermal insulation is a crucial practical opportunity to improve inertia resistance for energy-effective nearly-zero energy buildings. To this aim, the current paper quantitatively investigated role of traditional expanded polystyrene (EPS) different thicknesses performance building envelope integrated PCM under harsh summer months. The improvement in indoor temperature was studied considering maximum reduction (MITR), time lag (TL), average...

This paper experimentally investigates the optimal position of a phase change material (PCM) incorporated composite roof under Iraq climatic conditions. The composed Isogam (4 mm), concrete (50 mm) and gypsum board (8 which is an Iraqi popular combination. Four models are installed tested; one represented reference (Model A) others with PCM. PCM placed between B), in middle C), D). Set indicators introduced to compare among considering test room temperature, outside inside surface...

Incorporating phase change material (PCM) into buildings in hot climates is an excellent strategy for better thermal comfort and energy-saving future smart cities. Nevertheless, PCM elements suffer from adverse temperature behaviour at night due to the dissipation of stored diurnal heat. Night ventilation has been proposed as a promising solution clean decreasing indoor building increasing benefits following cycle. In this study, effect natural (NNV) period on performance room-integrated...

Phase change materials (PCMs) have a great potential to enhance building thermal comfort and save energy towards energy-efficient buildings. The current study sheds light on employing PCM passively in thin envelope under severely hot location using EnergyPlus software. contribution of indoor was evaluated considering the average temperature fluctuation reduction (ATFR), load levelling (TLLR) operative (OTR). Besides, total heat gain (AHGR) equivalent CO2 emission electricity cost saving...

Compacting phase change materials (PCMs) for thermal energy management in buildings is a promising method to reduce peak temperature and heat gain hot climates. This experimental study analyses the hourly reduction (HTR) (HHGR) of building envelope-compacted PCM passively during summer day. Two cubicles, one compact with other without, are fabricated examined under non-ventilated conditions concerning supreme thickness position roof best thermally-performed PCM-bricks walls. The results...

Integrating phase change material (PCM) and natural night ventilation (NNV) has notably improved building indoor thermal comfort in hot locations. The current study investigates the role of NNV through a window to improve temperature PCM room, considering orientation window-to-wall ratio (WWR). was employed one-sided room enumerate advantages passive technologies summer. Different orientations WWRs (between 8.75% 20%) were analysed environment using an experimentally validated model...

In recent years, phase change materials (PCMs) have increasingly received attention in different thermal energy storage and management fields. the building sector, paraffin as a material (PPCM) has been introduced an efficient PCM incorporated envelope, which showed remarkable results. However, poor conductivity of PPCM is still topmost drawback experimental numerical investigations. this paper, general assessment paraffins, their common uses applications, presented with particular focus on...

The current study experimentally investigates the optimal thickness of a phase change material (PCM) layer incorporated composite roof under severe exterior temperatures. Three PCM thicknesses, namely 10, 15 and 20 mm, are embedded inside popular combination for residential buildings in Iraq compared with reference without PCM. is composed Isogam (4 mm) as roofing material, concrete (50 main layer, gypsum board (8 cladding which worst thermal-performed country. Each case's thermal...

This research experimentally examines the thermal behaviour of concrete brick-based PCM layer/capsules during severe hot summer days in southern Iraq. Three bricks were fabricated which one brick was integrated with a layer (BL) and another capsules (BC), while third left bare without (BR) for comparison. The performance assessed considering inner outer surface temperature difference, decrement factor, time lag average fluctuation reduction. Besides, mechanical strength decline each...

In this paper, the thermal performance of phase change material (PCM) incorporated concrete bricks is studied experimentally. Four (three with macroencapsulated PCM and one without represented reference) are fabricated, their tested under hot climate conditions. The study considered effect encapsulation heat transfer area on brick's at same quantity. included three different capsule arrangements in which first brick involved bulky (Brick-B, 4*4*10 cm3), second had two capsules (Brick-C,...

Phase change materials (PCMs) incorporated building envelope for thermal energy storage (TES) considerably enhances and improves indoor comfort. Amongst other methods, macroencapsulation provides a flexible efficient PCM utilization among practical incorporation methods during long time of service. Nevertheless, there is still arguement regarding performance melting solidification phases due to containers, not mention PCM's poor conductivity. A brief overview possible integration PCMs with...

Phase change materials (PCMs) are successful thermal energy storage mediums in many systems, including buildings. Identifying the best PCM candidate is a critical incorporation parameter that influences building performance. This paper discusses selection of potential candidates could be applied for heating applications cold locations. A qualitative decision matrix (QDM) several commercial PCMs after an extensive analysis relevant literature studies. The melting temperature, heat fusion,...

The operational temperature highly influences the efficiency of solar photovoltaic (PV) module, in which high decreases output power accordingly. In this work, a polycrystalline PV module is modified using finned phase change material (PCM) panel attached to rear as thermal energy storage unit decrease and regulate operating under hot weather conditions southern Iraq. For purpose, local Iraqi paraffin wax used PCM loaded into galvanized steel that has internal smooth wavy fins improve poor...

In recent years, the summer season in Iraq has become longer and hotter than before, leading to high cooling loads inside buildings increased demand for electrical energy. The use of sustainable energy insulation techniques building envelopes are reasonable solutions overcoming harsh weather conditions reaching acceptable thermal comfort levels. this study, a survey on more 60 residential Al-Amarah City, Iraq, was conducted 21 July 2018 examine nature most common construction materials used...

Phase change materials (PCMs) are increasingly investigated in the last years as successful many thermal energy storage applications. In building sector, PCMs utilised to improve efficiency by reducing cooling/heating loads and promoting renewable sources, such solar energy. This paper shows recent research works on integrating with envelope for heating purposes. The main PCM categories their characteristics presented, focusing types applied methods adopted incorporate elements mentioned,...