Performance improvement of solar thermal systems integrated with phase change materials (PCM), a review

Javadi, F.S.; Metselaar, Hendrik Simon Cornelis; Ganesan, P.

doi:10.1016/j.solener.2020.05.106

Cited by 264 publications

(65 citation statements)

References 151 publications

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“…On the other hand, active designs for PCMs are more complex but may result in higher control on PCM performance [13]. Many PCMs suffer from low thermal conductivity, causing a low thermal diffusion rate, which results in limited practical storage applications [18,19]. In addition, issues caused by super cooling and phase segregation result in thermal cycling degradation, shortening the useful lifecycle of the PCMs for building energy use [18].…”

Section: Renewable and Alternative Energy Systems For Buildingsmentioning

confidence: 99%

How Much Building Renewable Energy Is Enough? The Vertical City Weather Generator (VCWG v1.4.4)

et al. 2021

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A challenge in the integration of renewable and alternative energy systems for buildings is the determination of the renewable energy ratio, which involves the selection and sizing of appropriate building systems. To address this need, a micro climate-weather software titled the Vertical City Weather Generator (VCWG) is further developed to include renewable and alternative energy systems and account for full two-way interaction between the building system and outdoor environment. VCWG is forced to simulate performance of a residential building in Guelph, Canada, for an entire year in 2015. Various energy options are considered and further optimized for the building to reduce natural gas consumption, electricity consumption, and cost. On an annual basis using the global cost method, and compared to a building with no such renewable or alternative energy systems, the optimized system resulted in 80.3% savings in natural gas consumption, 73.4% savings in electricity consumption, and 3% savings is annualized cost. According to this analysis, some technologies, such as photovoltaics are more favorable in the Canadian climate than other technologies. It is suggested that the building optimization process is not unique, and it depends on background climate, optimization weighing factors, and assumptions used in the economic analysis, which require further research.

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Section: Renewable and Alternative Energy Systems For Buildingsmentioning

confidence: 99%

How Much Building Renewable Energy Is Enough? The Vertical City Weather Generator (VCWG v1.4.4)

et al. 2021

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“…In recent years, solar energy has received widespread attention, it is clean, inexhaustible, but the use process will be intermittent, which limits the widespread use, solar energy storage technology has been widely proven to be an efficient technology to solve the intermittent problem, improve solar thermal energy utilization efficiency, and reduce heating costs 1‐3 . Thermal energy storage (TES) can not only meet the needs of electricity and space heating, they also help to eliminate the fluctuation of energy demand and alleviate the intermittent problems of solar thermal energy at different times throughout the day 4 .…”

Section: Introductionmentioning

confidence: 99%

“…For the phase‐change material (PCM) used in the construction field, the latent heat is released through the phase change process of the PCM, thereby improving the indoor temperature comfort and ultimately achieving energy saving effects 5,6 . Because PCM releases high latent heat during phase change, many countries use PCM to store thermal energy 2 . Solar heat collection systems generally include solar heat collectors and energy storage tanks, which are also energy storage heat exchangers, some solar systems may not have energy storage tanks.…”

Section: Introductionmentioning

confidence: 99%

Review on solar collector systems integrated with phase‐change material thermal storage technology and their residential applications

Liu

Zhang

2021

Int J Energy Res

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This article reviews the design of solar phase-change energy storage systems and their applications in residential buildings. The solar thermal collection system has high heat collection efficiency, no pollution, and it is also widely used in the field of building heating. In order to improve the efficiency of the solar collector system, the researchers found that integrating phase-change materials (PCMs) into the solar thermal collector system can achieve this goal, but there will be a problem of PCM leakage. Some researchers have solved this problem by microencapsulating PCMs, the thermal conductivity and energy storage efficiency of the PCMs after microencapsulation will be greatly affected. Adjusting the solar collector to an appropriate inclination angle can achieve the highest heat collection efficiency. Choosing the PCM in the appropriate temperature zone can improve the system efficiency. For the separated solar collector system, the parts that need to be considered include the type of heat exchanger, the structure of the energy storage heat exchanger, the shape of the heat exchanger fins, the type of solar collector, and so on. All in all, coupling PCM into the solar collector system can improve energy efficiency reduce carbon emissions and have good economics, the maximum internal rate of return of solar collectors integrated with PCMs in residential and industrial applications is 22% and 17.2%.

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“…Within the past few decades, the world has encountered a massive increase in energy consumption accompanied by an increase in CO2 emissions that lead to arising environmental risks. This enormous increase was a consequence to the growth in world's population that stimulated the evolution of economy and energy demand [1]. Buildings proved to be accumulating for the largest energy consumption quantity world-widely, with a percentage ranging between 30-40% 1 [2][3][4][5], that is expected to rise up by 2050 reaching 50% [6].…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on the Use of Enhanced Coconut Oil and Paraffin Wax Phase Change Material in Active Heating Using Advanced Modular Prototype

Faraj

Khaled

Faraj

et al. 2021

Journal of Energy Storage

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The use of phase change materials in buildings as a thermal energy storage system gained the attention of researchers all over the world. In the current study, coconut oil bio-based PCM is macro-encapsulated with enhanced thermal conductivity containers and coupled with hydronic radiant floor heating system. The study follows experimental aspect utilizing two identical small scale modular test prototypes. Investigations are directed toward studying the effect of the active CO-PCM system under different weather conditions, effect of combining active and passive systems, effect of PCM choice/type and effect of PCM location within the active floor, on the thermal and energy storage performances. Results revealed that coupling CO-PCM to active floor, passive wall and passive roof is capable of achieving load shifting and energy savings; and is affected by the control method, weather conditions, electricity tariff policy and PCM position and type. Further discussions, conclusions and perspective recommendations are summarized within the article. Highlights Identical experimental advanced modular prototypes are designed and implemented.  Macro-encapsulation technique using enhanced thermal conductivity containers.  Thermal comfort and temperature fluctuations reduction using CO and PW PCMs.  Load shifting by combined CO-PCM applications leads to possible annual cost saving.  Positioning CO-PCM plates below heating layer ensued energy saving of 393.5 kWh.

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Performance improvement of solar thermal systems integrated with phase change materials (PCM), a review

Cited by 264 publications

References 151 publications

How Much Building Renewable Energy Is Enough? The Vertical City Weather Generator (VCWG v1.4.4)

How Much Building Renewable Energy Is Enough? The Vertical City Weather Generator (VCWG v1.4.4)

Review on solar collector systems integrated with phase‐change material thermal storage technology and their residential applications

Experimental Study on the Use of Enhanced Coconut Oil and Paraffin Wax Phase Change Material in Active Heating Using Advanced Modular Prototype

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