用于高温应用的混合形式包含不同熔点相变材料的轻质混凝土的蓄热特性。

Thermal storage properties of lightweight concrete incorporating phase change materials with different fusion points in hybrid form for high temperature applications.

作者信息

Sukontasukkul Piti, Sangpet Teerawat, Newlands Moray, Yoo Doo-Yeol, Tangchirapat Weerachart, Limkatanyu Suchart, Chindaprasirt Prinya

机构信息

Construction and Building Materials Research Center, Department of Civil Engineering, King Mongkut's University of Technology North Bangkok, Bangkok, Thailand.

Department of Mechanical and Aerospace Engineering, King Mongkut's University of Technology North Bangkok, Bangkok, Thailand.

出版信息

Heliyon. 2020 Sep 6;6(9):e04863. doi: 10.1016/j.heliyon.2020.e04863. eCollection 2020 Sep.

DOI:10.1016/j.heliyon.2020.e04863

PMID:32954037

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7486446/

Abstract

In this study, the thermal storage properties of lightweight concrete incorporating two types of phase change materials (PCM) with two different fusion points were investigated. Two types of PCM, polyethylene glycol (PEG) and paraffin (PRF), were impregnated into porous aggregates using high temperatures. The PCM aggregates were mixed with concrete at different proportions of PEG/PRF aggregates from 0/100 to 100/0 with 25% intervals. The experimental series consisted of thermal property tests (such as thermal conductivity, specific heat, and latent heat), and some basic properties (such as compressive strength, density, water absorption, and abrasion resistance). The results showed that incorporating PCM aggregates into lightweight concrete helped increase the workability, lower the moisture absorption, and increase the mechanical properties. For thermal properties, both thermal conductivity (k) and specific heat were found to depend strongly on the state of PCM. The latent heat of lightweight concrete with PCM aggregates in hybrid form were found to be higher than that of single type PCM aggregates.

摘要

在本研究中，对掺入两种具有不同熔点的相变材料（PCM）的轻质混凝土的蓄热性能进行了研究。使用高温将两种类型的PCM，即聚乙二醇（PEG）和石蜡（PRF）浸渍到多孔骨料中。将PCM骨料与混凝土以不同比例的PEG/PRF骨料（从0/100到100/0，间隔25%）混合。实验系列包括热性能测试（如导热系数、比热和潜热）以及一些基本性能（如抗压强度、密度、吸水率和耐磨性）。结果表明，将PCM骨料掺入轻质混凝土有助于提高工作性、降低吸湿性并提高力学性能。对于热性能，发现导热系数（k）和比热都强烈依赖于PCM的状态。发现混合形式的含PCM骨料的轻质混凝土的潜热高于单一类型PCM骨料的潜热。