Experimental and numerical evaluation of a new design of a solar thermosyphon water heating system with phase change material

Awani, Sami; Chargui, Ridha; Tashtoush, Bourhan

doi:10.1016/j.est.2021.102948

Cited by 16 publications

(3 citation statements)

References 46 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In practice, the phase change temperature of form-stable PCMs determines the application occasion. In this work, the PA/RHA-H-γMPS composite has a phase change temperature of 48.2 °C, and it is highly suitable for solar heating water systems in buildings. − …”

Section: Results and Discussionmentioning

confidence: 99%

Bio-Based Dual-Functionalized Phase Change Composite: Ultrafast Solar-to-Thermal Conversion and Reinforced Heat Storage Capacity

Liu

Jia

et al. 2021

Energy Fuels

View full text Add to dashboard Cite

Rice husk (RH) is a highly recyclable biomass and often used as biofuel. However, residual rice husk ash (RHA) from burning RH is difficult to dispose and causes a serious environment threat. In this study, high-value utility of RHA in terms of form-stable phase change materials (PCMs) was pointed out. RHA was introduced as a supporting material to encapsulate paraffin (PA) to solve the leakage of PA. In order to enhance heat storage capacity, the two-step method was proposed via a neutralization reaction and chemically hydrophobic grafting process to construct a unique RHA nanoporous structure with high adsorptivity of PA. The influence and mechanism of the surface structure and chemical properties of an RHA support on hydrophobicity were deeply discussed, in which the surface chemical structures and fractal characteristics were revealed. The results indicated that PA/bio-based RHA composites possessed enhanced enthalpies due to the synergism of pore structure enlargement and surface hydrophobization of the RHA support. Furthermore, the composite PCM showed excellent solar-to-thermal conversion and thermal cycling reliability. This work provides a new insight into the high value utilization of biomass waste RHA and the development of high performance and multifunction for PA/bio-based RHA phase change composites.

show abstract

Section: Results and Discussionmentioning

confidence: 99%

Bio-Based Dual-Functionalized Phase Change Composite: Ultrafast Solar-to-Thermal Conversion and Reinforced Heat Storage Capacity

Liu

Jia

et al. 2021

Energy Fuels

View full text Add to dashboard Cite

show abstract

“…There are a number of works devoted to a thorough scientific examination of the methods that give the greatest effect of converting solar energy into thermal energy. Research was carried out by modeling thermal processes in systems with solar collectors [12][13][14][15], as well as through wide-parameter experimental studies [10,[17][18][19][20]. Modern designs of solar collectors make it pos30the type of solar collector and its technical characteristics necessary for heat supply systems should be made on the basis of comparison and in-depth analysis [21][22][23][24].…”

Section: Introductionmentioning

confidence: 99%

Investigation of thermal and air efficiency in trombe wall of modular building

2023

Archives of Civil Engineering

View full text Add to dashboard Cite

The proposed Trombe wall design is an innovative and effective solution for addressing issues related to building energy efficiency. The Trombe wall can help reduce a building's energy consumption, provide optimal indoor temperature, and minimize the building's environmental impact by utilizing renewable energy sources.The article deals with the study of the heat-air characteristics of the Trombe Wall, which performs the functions of external protection of a modular house, with the aim of further evaluating the possibility of using it as a hybrid protection with additional heating and ventilation functions assigned to it. The results of experimental research conducted on one of the elements of external protection of a modular house in the form of the Trombe Wall are presented. The experimentally obtained graphic dependences were compared with the calculated data and the convergence was evaluated. The proposed design allows you to organize air exchange in the premises with a multiplicity within 1-1.5 h −1 , and also provides an opportunity to provide additional thermal power in the amount of 250 W/m 2 . The article presents the results of experimental studies that allow to evaluate the thermal characteristics of the proposed design of external protection for a modular house. These results indicate that with the given geometric dimensions, in particular with a volume of 14 m 3 , the thermal power utilized by the Trombe wall is within 0.2-0.7 kW.

show abstract

“…Τhis is a very efficient energy storage mechanism, since the heat is stored / released at constant temperature during phase transition 6, thereforere reducing temperature fluctuations and increasing the thermal inertia 7. PCMs have a variety of applications 8–10, e.g., in solar energy generation systems 11–13, for water heating 14, 15, or solar cookers 16. In buildings, PCMs can be used for heating / cooling residential spaces, integrated within the building structure or within the HVAC system 17.…”

Section: Introductionmentioning

confidence: 99%

Ex‐Ante Optimal Design of Sustainable Phase Change Materials for Latent Heat Storage

Geroulis

Kokossis

Marcoulaki

2022

Chemie Ingenieur Technik

View full text Add to dashboard Cite

Energy consumption for residential heating can be reduced using new insulation solutions in the form of phase change materials (PCMs) integrated within the building structure. This work proposes a framework for the optimal design of PCMs considering operational as well as sustainability aspects at the early stages of the material development process. The proposed framework applies computer-aided molecular design tools and considers a practical simulation model to calculate the functional performance of the PCM, as well as a variety of constraints to impose desirable bounds on the material thermophysical properties and its impact on environment and safety.

show abstract

Experimental and numerical evaluation of a new design of a solar thermosyphon water heating system with phase change material

Cited by 16 publications

References 46 publications

Bio-Based Dual-Functionalized Phase Change Composite: Ultrafast Solar-to-Thermal Conversion and Reinforced Heat Storage Capacity

Bio-Based Dual-Functionalized Phase Change Composite: Ultrafast Solar-to-Thermal Conversion and Reinforced Heat Storage Capacity

Investigation of thermal and air efficiency in trombe wall of modular building

Ex‐Ante Optimal Design of Sustainable Phase Change Materials for Latent Heat Storage

Contact Info

Product

Resources

About