Parametric analysis and optimization of an underfloor solar assisted heating system with phase change materials

Summary In the existent paper, the performance of thermal storage hybrid buildings exploiting the latent heat of phase change materials (PCMs) for thermal refrigeration and heating of the contemporary period has been investigated. The conventional buildings consume a large amount of electricity, primarily for the heating and cooling applications. Electricity generation primarily relies on coal‐based thermal power plants. The emissions from these establishments pose a serious threat to the environment. Moreover, conventional heating/cooling units rely on exorbitant energy cost. The usage of any kind of thermal storage system is an efficacious way of stockpiling thermal energy and utilizing it when needed. This paper gives a comprehensive overview of the available thermal storage units incorporating PCMs. The various segments of the buildings, viz, ceiling, window, wall, and floor have been analyzed in details. The results are quite promising in terms of load reduction and overall energy saving. Indoor surface temperature reduction of up to 7oC has been achieved. The energy saving of up to 40% can be realized by employing PCM. A comprehensive list of the PCMs is also tried to build up for end users according to their temperature requirement.

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“…Plytaria et al analyzed an underfloor heat radiating system. The first was PCM‐embroidered and the other was having a conventional design.…”

Section: Role Of Pcm In Buildings: a Short Reviewmentioning

confidence: 99%

“…The average energy saving of 54.27% was observed with PCM floor when compared that of without PCM. 113 analyzed an underfloor heat radiating system. The first was PCM-embroidered and the other was having a conventional design.…”

Section: Floormentioning

confidence: 99%

Recapitulation on latent heat hybrid buildings

2019

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“…Results revealed that the optimum location of PCM is in the south wall with a reduction of auxiliary energy of 30%. In another numerical study with the same building dimensions, Plytaria et al [48] managed to investigate and optimize the performance of underfloor solar assisted heating system integrated with PCM. Using TRNSYS simulation tool authors proved that the use of BioPCM Q29 as Macro-encapsulated PCM placed under the floor heating tubes reduces the auxiliary energy load by 65%, and the rise of indoor temperature reached 0.8 ℃.…”

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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“…The research showed that 54% to 67% of the heat generated by solar energy system during the day could be used to heat buildings at night . Plytaria et al added PCM heat storage layer under the floor of the room in solar‐assisted heating system, which reduced energy consumption by 65% . Agarwal et al designed a tubular paraffin phase change heat storage device and analyzed the influence of heat storage device on solar drying system characteristics .…”

Section: Introductionmentioning

confidence: 99%

“…7 Plytaria et al added PCM heat storage layer under the floor of the room in solar-assisted heating system, which reduced energy consumption by 65%. 8 Agarwal et al designed a tubular paraffin phase change heat storage device and analyzed the influence of heat storage device on solar drying system characteristics. 9 Khadraoui et al conducted an experimental study on the influence of PCM heat storage units on solar air collectors, providing an experimental basis for evaluating importance of PCM heat storage units.…”

Section: Introductionmentioning

confidence: 99%

Study on design and thermal characteristics of vacuum tube solar collector intubated with heat storage tube

Xiao

Yang

2019

Int J Energy Res

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Summary In this work, a heat storage vacuum tube solar collector intubated with heat storage tube is designed, which consists of solar vacuum tube, phase change material insert tube, and heat holding cover. The internal energy conversion, transmission, and storage theory are established based on the structure of the heat storage vacuum tube. The parallel and series‐parallel solar air collector system prototype consisting of nine heat storage solar vacuum tube solar collectors is designed and tested. The test results showed that the daily average conversion efficiency of the parallel and series‐parallel prototype reached 56.9% and 48.46%, respectively. Compared with nonheat storage prototype, the heat storage parallel and series‐parallel prototype had higher conversion efficiency by, respectively, 10.9% and 7.8%, longer effective heating time, and better heating stability and practicability. At the same time, the heat storage solar collector has compact structure, which is convenient to use.

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Parametric analysis and optimization of an underfloor solar assisted heating system with phase change materials

Cited by 42 publications

References 24 publications

Recapitulation on latent heat hybrid buildings

Recapitulation on latent heat hybrid buildings

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

Study on design and thermal characteristics of vacuum tube solar collector intubated with heat storage tube

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