Suppressing the supercooling temperature of inorganic salt hydrate high temperature phase change material using oxide nanoparticles

Name: Nandi Lwin

Organization : Mahidol University. Faculty of Science

Name: Nongluck Houngkamhang

Organization : King Mongkut's Institute of Technology Ladkrabang. College of Nanotechnology

Name: Toemsak Srikhirin

Organization : National Nanotechnology Center. Research Network of NANOTEC at Mahidol University

Email : toemsak.sri@mahidol.ac.th

keyword: Phase change material

LCSH: Supercooling

; Heat storage

LCSH: Nanoparticles

; Inorganic salt hydrate

; Nucleating agent

; T-history method

Abstract: Phase change materials (PCMs) are extensively used in solar applications as heat storage materials. Salt hydrate PCMs are known to have supercooling behavior which affects the efficiency of system. In this work, two types of salt hydrate PCMs suitable for high temperature heat storage application, magnesium nitrate hexahydrate (Mg(NO3)2 6H2O) and magnesium chloride hexahydrate (MgCl2 6H2O), were investigated in order to screen a potential nucleating agent for reducing a supercooling effect by using a T-history method. Both materials are suffered from high degree of supercooling which are 15.4 Celsius degreesand 18.9 Celsius degrees, respectively. Oxide nanoparticles such as rutile TiO2, anatase TiO2, and SiO2 with the size of 100 nm were added to PCMs to act as nucleating agents which can reduce the supercooling degree. The oxide nanoparticles including rutile TiO2, anatase TiO2, and SiO2 nanoparticles at 0. 1 wt percent nanoparticle were added into both PCMs. Only a few system of oxide nanoparticles doped PCM show reduction in supercooling effect, which means supercooling degree of PCM was decreased when oxide nanoparticles were used. TiO2 rutile was found to work better with Mg(NO3)2 6H2O than MgCl2 6H2O where degree of supercooling was decreased to 5.7 Celsius degrees from 15.4 Celsius degreesat 0.1 wt percent loading

King Mongkut's University of Technology North Bangkok. Central Library

Address: BANGKOK

Email: library@kmutnb.ac.th

Created: 2019

Modified: 2019-10-16

Issued: 2019-10-16

บทความ/Article

application/pdf

BibliograpyCitation : In Chemical Society of Thailand under the Patronage of Professor Dr. HRH Princess Chulabhorn. Pure and Applied Chemistry International Conference 2019 (PACCON 2019) (RE159-163). Bangkok : Mahidol University

eng

©copyrights King Mongkut's University of Technology North Bangkok

ลำดับที่.	ชื่อแฟ้มข้อมูล	ขนาดแฟ้มข้อมูล	จำนวนเข้าถึง	วัน-เวลาเข้าถึงล่าสุด
1	PACCON 2019RE159-163.pdf	344.74 KB

ใช้เวลา

0.018784 วินาที