Development and characterization of ternary mixture series of medium‐ and long‐chain saturated fatty acids for energy applications

Abstract

The existing study concerned with the development and characterization of ternary eutectics prepared from medium-chain fatty acids and long-chain fatty acids. The acids used to prepare these blendings were commercial-grade capric acid (CA), myristic acid (MA), stearic acid (SA), lauric acid (LA), and palmitic acid (PA). The different ternary groups using these acids were prepared, that is, and CA-PA-SA having variable weight's compositions (90/5/5, 80/10/10, 70/15/15, 60/20/20, 50/25/25, 40/30/30, 30/35/35, 20/40/40, and 10/45/45). The various thermophysical properties such as melting temperature (MT) and latent heat of fusion (LHF) were measured calorimetrically using the differential scanning calorimeter. The MT obtained were in the range of 15 C-50 C along with adequate LHF values, that is, 80-200 kJ/kg, which are within the application range of different thermal systems. The various proportions of CA used in the blending have a decisive influence on determining the MT of the concerned ternary concoction. The data from the result authenticate that these developed materials can be useful for thermal regulation of buildings, photovoltaic, space, and solar water heating systems because of their enormous latent heat values and appropriate phase transition temperature. K E Y W O R D Sbuildings, fatty acids, latent heat storage, phase change materials, photovoltaic, thermal energy storage

Development of phase change materials for low-temperature thermal energy storage application

“…Most of the developed mixes have sufficient LHF value, and based on their melting point range (26.14 °C-30.60 °C), they can be used for TES applications in solar absorption chillers, buildings, surgical dress, clinical beds, and photovoltaic systems. 5,16,17 Effect of different heating rates on behaviour of CA/PW eutectic To check the effect of different heating and cooling rates on T m , different heating and cooling rates were used for the 400 th thermal cycle of the CA/PW eutectic mixture to examine the influence of scan rate on T m and LHF. The Figure 4 the CA/PW eutectic mixture (94/06 wt.%) DSC curve for the 400 th heating and cooling cycle at 1 °C min -1 , 2 °C min -1 , and 5 °C min -1 scan rates.…”

“…Another issue is the thermal stress caused by PCMs and corrosion, which leads to the downfall of the building material. 5,16,17 In addition, PCMs for low-temperature applications are scarce. A lot of studies have been carried out during the last few decades, particularly in this direction, however, there is still a need for commercial PCM especially working between 30-60 °C, and should be widely accessible and reasonably priced in the local market.…”

Thermal Stability and Reliability Test of Some Saturated Fatty Acids for Low and Medium Temperature Thermal Energy Storage

“…The novelty can be explained on the basis that this study is related to the previously conducted development of PCMs by the authors' group [21]. However, the thermal stability with respect to the cycle test has not been undertaken so far which is also equally important for the long-term performance of the PCM in any kind of thermal system.…”

“…MT and LHF were obtained using DSC analysis. The data relating to the primary investigation has already been published in the recent work of Anand et al [21]. Based on the primary results, 28 samples were selected for the cycle testing, being those with a sharp MT and enormous LHF value.…”