Aluminum‐based thermal storage system with solar collector using nanofluid

Abstract

Metal and phase change material (PCM) is used for thermal storage system.Aluminum as a metal and erythritol as the PCM is a better option for the thermal storage. This thermal storage is charging with the help of solar energy through a solar collector. Parabolic trough solar collector is used to collect the solar energy. Evacuated tube was used to absorb solar radiation and soybean oil-based nanofluid containing Al 2 O 3 nanoparticles at volume concentration of 0.1% is filled in tube to transfer heat from absorber tube to thermal storage. Nanofluid was prepared with the help of ultrasonication. The heat transfer from the absorber to thermal storage through self-circulation unit. Experimentation is carried out with and without nanofluid. Nanofluid of soybean oil and Al 2 O 3 is enhanced the performance of solar collector. The thermal storage and absorber temperature is reached upto the 153 C and 178 C while using nanofluid. The discharging of PCM is carried out through experimentation.The PCM is filled in thermal storage, which changes its phase and stores the energy which can be used at night when solar energy is not available. K E Y W O R D Saluminum-based thermal storage, heat transfer fluid, nanofluid, phase change materials, solar collector

Performance of oil‐based thermal storage system with parabolic trough solar collector using Al 2 O 3 and soybean oil nanofluid

“…The Al 2 O 3 nanoparticles was supplied from Nano Research Lab (NRL), Jamshedpur, India with average particles size 30 to 50 nm and prepared by bottom‐up method 47‐49 . The volume concentration (∅) of nanoparticles in base fluid of 0.1% was used, which gives maximum heat transfer efficiency for the thermo‐syphon system 25,50‐53 . The soybean oil and Al 2 O 3 nanofluid was prepared with the help of ultra‐sonication 54,55 .…”

“…[47][48][49] The volume concentration (;) of nanoparticles in base fluid of 0.1% was used, which gives maximum heat transfer efficiency for the thermo-syphon system. 25,[50][51][52][53] The soybean oil and Al 2 O 3 nanofluid was prepared with the help of ultra-sonication. 54,55 The sonication was done using ultra-sonication for 5 hours, 56,57 to obtained nanofluid without sedimentation and with long time stability.…”

Advancements in Thermal Energy Storage System by Applications of Nanofluid Based Solar Collector: A Review

“…Nanofluid for the thermal storage system is basically operated at higher temperature. So these category of solar collector is best suitable for the thermal storage system using nanofluid as Environmental and Climate Technologies ____________________________________________________________________________ 2020 / 24 317 HTF [87]. There are different types of solar collector and they are described in the next sections.…”

An approach toward higher electrical conversion efficiency of solar photovoltaic module using phase change materials

“…In the field of PCM-based energy storage system, significant number of studies has been already carried out for different thermal energy storage system applications. [20][21][22][23] The PCM-based study on PV cells for different orientations of PV modules focused on improved electrical conversion efficiency still needs significant number of researches to make it as commercial level applications. Although few authors 16,24,25 studied the effect of module tilt angle on the performance of PV-PCM systems, but it is limited for single PCM as well as comparative study is also missing.…”

“…This study was limited to single PCM material and without any variation in inclination angle. In the field of PCM‐based energy storage system, significant number of studies has been already carried out for different thermal energy storage system applications 20‐23 . The PCM‐based study on PV cells for different orientations of PV modules focused on improved electrical conversion efficiency still needs significant number of researches to make it as commercial level applications.…”