Simulation and performance analysis of an active PCM-heat exchanger intended for building operation optimization

Morovat, Navid; Athienitis, Andreas; Candanedo, José A.; Dermardiros, Vasken

doi:10.1016/j.enbuild.2019.06.022

Cited by 54 publications

(13 citation statements)

References 35 publications

(38 reference statements)

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“…The solidification time was accelerated by 41%. Other types of heat exchangers were analyzed in [28][29][30][31]. There have also been studies published on the microencapsulated phase-change materials' heat transfer characteristics during flow [32].…”

Section: The Current State Of Knowledgementioning

confidence: 99%

The Effect of Microencapsulated PCM Slurry Coolant on the Efficiency of a Shell and Tube Heat Exchanger

et al. 2022

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This paper describes the results of experimental studies on heat transfer in a shell and tube heat exchanger during the phase changes of the HFE 7000 refrigerant. The studies were performed using a mixture of water and a microencapsulated phase change material as a coolant. HFE 7000 refrigerant condenses on the external surface of the copper tube, while a mixture of water and phase change materials flows through the channels as coolant. Currently, there is a lack of research describing cooling using phase change materials in heat exchangers. There are a number of publications describing the heat exchange in heat exchangers during phase changes under air or water cooling. Therefore, the research hypothesis was adopted that the use of mixed water and microencapsulated material as a heat transfer fluid would increase the heat capacity and contribute to the enhancement of the heat exchange in the heat exchanger. This will enable an increase in the total heat transfer coefficient and the heat efficiency of the exchanger. Experimental studies describe the process of heat transfer intensification in the above conditions by using the phase transformation of the cooling medium melting. The test results were compared with the results of an experiment in which pure water was used as the reference liquid. The research was carried out in a wide range of refrigerant and coolant parameters: ṁr = 0.0014–0.0015 kg·s−1, ṁc = 0.014–0.016 kg·s−1, refrigerant saturation temperature Ts = 55–60 °C, coolant temperature at the inlet Tcin = 20–32 °C, and heat flux density q = 7000–7450 W·m−1. The obtained results confirmed the research hypothesis. There was an average of a 13% increase in the coolant heat transfer coefficient, and the peak increase in αc was over 24%. The average value of the heat transfer coefficient k increased by 5%, and the highest increases in the value of k were noted at Tin = 27 °C and amounted to 9% in relation to the reference liquid.

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Section: The Current State Of Knowledgementioning

confidence: 99%

The Effect of Microencapsulated PCM Slurry Coolant on the Efficiency of a Shell and Tube Heat Exchanger

et al. 2022

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“…For that, the use of thermal energy storage (TES) systems which are combined with building was triggered as an efficient and promising technology that aims for reducing energy demand, shifting cooling/heating loads in time (peak shaving), and improving heating/cooling systems by increasing the thermal efficiency or reducing harmful greenhouse gases emissions [42]. TES is the key toward providing "Energy Flexibility" in buildings [74]. Sharma et al [75] included in their study that different types of thermal storage of solar energy are divided into two categories: (1) Thermal and (2) Thermochemical (see Figure 1 below).…”

Section: Thermal Energy Storage (Tes)mentioning

confidence: 99%

A review on phase change materials for thermal energy storage in buildings: Heating and hybrid applications

Faraj

Khaled

Faraj

et al. 2021

Journal of Energy Storage

187

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Researchers worldwide are investigating thermal energy storage, especially phase change materials, for their substantial benefits in improving energy efficiency, sustaining thermal comfort in buildings and contributing to the reduction of environmental pollution. Residential buildings and commercial constructions, being dependent on heating and cooling systems, are subjected to the utilization of PCM technology through several applications. The current study presents a state-of-the-art review that covers recent literature on thermal energy storage systems utilizing PCMs for buildings. The reviewed applications are heating and hybrid applications, that are categorized as passive and active systems. A summary of the PCMs used, applications, thermo-physical properties and incorporation methods are presented as well. The study emphasizes the promising effectiveness of PCM in building heating applications, and highlights the significance of PCM system hybridization. The study shows that experimental investigations on commercial constructions, and hybrid systems development and optimization, are still required. Finally, possible combinations of active and passive heating applications with their auspicious benefits in terms of energy efficiency augmentation, are recommended. Highlights  State-of-the-art review on PCM building applications for heating and hybrid systems  Active and Passive classification for heating and hybrid systems  Challenges altering the PCM technology for energy-efficient buildings are addressed  Hybridization of active and passive systems forms a potential method toward NZEB

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“…It comes about an extraordinary assertion between the show and test estimations, with a standard deviation of less than 8% and the test estimations affirmed the potential of the outlined unit to fulfil the heating request of a private building at power cost crest and move it to off-peak hours. Morovat et al (2019) focused the primary portion of the paper on the plan of the PCM-HX. A few plan arrangements are assessed and examined the parameters which were incorporated in the PCM-HX measurements.…”

Section: Air Phase Change Materials Heat Energy Exchangermentioning

confidence: 99%

Review on phase change materials for solar energy storage applications

Naveenkumar¹,

Ravichandran²,

Mohanavel

et al. 2021

Environ Sci Pollut Res

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The energy storage application plays a vital role in the utilization of the solar energy technologies. There are various types of the energy storage applications are available in the todays world. Phase change materials (PCMs) are suitable for various solar energy systems for prolonged heat energy retaining, as solar radiation is sporadic. This literature review presents the application of the PCM in solar thermal power plants, solar desalination, solar cooker, solar air heater, and solar water heater. Even though the availability and cost of PCMs are complex and high, the PCMs are used in most solar energy methods due to their significant technical parameters improvisation. This review's detailed findings paved the way for future recommendations and methods for the investigators to carry work for further system developments.

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Simulation and performance analysis of an active PCM-heat exchanger intended for building operation optimization

Cited by 54 publications

References 35 publications

The Effect of Microencapsulated PCM Slurry Coolant on the Efficiency of a Shell and Tube Heat Exchanger

The Effect of Microencapsulated PCM Slurry Coolant on the Efficiency of a Shell and Tube Heat Exchanger

A review on phase change materials for thermal energy storage in buildings: Heating and hybrid applications

Review on phase change materials for solar energy storage applications

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