PMID- 33110121
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20240330
IS  - 2045-2322 (Electronic)
IS  - 2045-2322 (Linking)
VI  - 10
IP  - 1
DP  - 2020 Oct 27
TI  - Cryogenic conditioning of microencapsulated phase change material for thermal 
      energy storage.
PG  - 18353
LID - 10.1038/s41598-020-75494-8 [doi]
LID - 18353
AB  - Microencapsulation is a viable technique to protect and retain the properties of 
      phase change materials (PCMs) that are used in thermal energy storage (TES) 
      applications. In this study, an organic ester as a phase change material was 
      microencapsulated using melamine-formaldehyde as the shell material. This 
      microencapsulated PCM (MPCM) was examined with cyclic cryogenic treatment and 
      combined cyclic cryogenic heat treatment processes. The surface morphology 
      studies showed that the shell surfaces had no distortions or roughness after 
      cryogenic treatment. The cryogenically conditioned microcapsules exhibited 
      diffraction peak intensity shifts and crystal structure changes. The onset of 
      melting for the nonconditioned and conditioned microcapsules were measured to be 
      8.56-9.56  degrees C, respectively. Furthermore, after undergoing the cryogenic and heat 
      treatment processes, the PCM microcapsules had appreciable latent heat capacities 
      of 39.8 kJ/kg and 60.7 kJ/kg, respectively. Additionally, the microcapsules were 
      found to have good chemical stability after the cryogenic treatment. In addition, 
      the cryogenically conditioned microcapsules were found to be thermally stable up 
      to 128.9  degrees C, whereas the nonconditioned microcapsules were stable up to 101.9  degrees C. 
      Based on the test results, it is obvious that the cryogenically conditioned 
      microcapsules exhibited good thermal properties and are very desirable for cool 
      thermal energy storage applications.
FAU - Trivedi, G V N
AU  - Trivedi GVN
AD  - Department of Mechanical Engineering, Birla Institute of Technology and 
      Science-Pilani, Hyderabad Campus, Hyderabad, 500 078, India.
FAU - Parameshwaran, R
AU  - Parameshwaran R
AD  - Department of Mechanical Engineering, Birla Institute of Technology and 
      Science-Pilani, Hyderabad Campus, Hyderabad, 500 078, India. 
      parameshwaranr@hyderabad.bits-pilani.ac.in.
LA  - eng
GR  - ECR/2017/001146/Science and Engineering Research Board/
GR  - ECR/2017/001146/Science and Engineering Research Board/
PT  - Journal Article
DEP - 20201027
PL  - England
TA  - Sci Rep
JT  - Scientific reports
JID - 101563288
SB  - IM
PMC - PMC7591511
COIS- The authors declare no competing interests.
EDAT- 2020/10/29 06:00
MHDA- 2020/10/29 06:01
PMCR- 2020/10/27
CRDT- 2020/10/28 05:36
PHST- 2020/06/17 00:00 [received]
PHST- 2020/10/12 00:00 [accepted]
PHST- 2020/10/28 05:36 [entrez]
PHST- 2020/10/29 06:00 [pubmed]
PHST- 2020/10/29 06:01 [medline]
PHST- 2020/10/27 00:00 [pmc-release]
AID - 10.1038/s41598-020-75494-8 [pii]
AID - 75494 [pii]
AID - 10.1038/s41598-020-75494-8 [doi]
PST - epublish
SO  - Sci Rep. 2020 Oct 27;10(1):18353. doi: 10.1038/s41598-020-75494-8.