TY - JOUR
T1 - Thermal analysis of Phase Change Material Board (PCMB) under weather conditions in the summer
AU - Zhou, D.
AU - Tian, Yuan
AU - Qu, Y.
AU - Chen, Yong
N1 - This document is the Accepted Manuscript version of the following article: D. Zhuo, Y. tian, Y. Qu, and Y. K. Chen, ‘Thermal analysis of phase change material board (PCMB) under weather conditions in the summer’, Applied Thermal Engineering, Vol. 99: 690-702, April 2016, doi: https://doi.org/10.1016/j.applthermaleng.2016.01.121.
This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/.
PY - 2016/4/25
Y1 - 2016/4/25
N2 - Phase Change Material Board (PCMB) has been considered as an effective way to improve the thermal comfort in either new or existing buildings. In this work, firstly the optimal melting temperatures of internal and external PCMB are given, and the optimal heat storage capacities are obtained under the idealised circumstance of considering sinusoidal changes of the room and outdoor temperatures during a day. Secondly, to study the potential energy saving from applying a PCMB, a case study of a lightweight office with real environmental conditions is carried out. The air conditioning is switched on in the model to keep the indoor temperature within thermal comfort. Using the daily energy consumption and daily thermal comfort rate as the performance criteria, the effects of major influencing factors including melting temperature, latent heat and thermal conductivity of PCMB are studied parametrically. The results show that both the external and internal PCMB can achieve better performance when the melting temperature is chosen to be slightly higher than the average indoor air temperature. In the summer, the external PCMB has a better performance than the internal PCMB because the external PCMB works not only as a heat storage system whose function is similar to the internal PCMB, but also as a thermal connection between the outdoor and indoor environment due to its thermal insulation function, which reduces the influence of the changing outdoor environment.
AB - Phase Change Material Board (PCMB) has been considered as an effective way to improve the thermal comfort in either new or existing buildings. In this work, firstly the optimal melting temperatures of internal and external PCMB are given, and the optimal heat storage capacities are obtained under the idealised circumstance of considering sinusoidal changes of the room and outdoor temperatures during a day. Secondly, to study the potential energy saving from applying a PCMB, a case study of a lightweight office with real environmental conditions is carried out. The air conditioning is switched on in the model to keep the indoor temperature within thermal comfort. Using the daily energy consumption and daily thermal comfort rate as the performance criteria, the effects of major influencing factors including melting temperature, latent heat and thermal conductivity of PCMB are studied parametrically. The results show that both the external and internal PCMB can achieve better performance when the melting temperature is chosen to be slightly higher than the average indoor air temperature. In the summer, the external PCMB has a better performance than the internal PCMB because the external PCMB works not only as a heat storage system whose function is similar to the internal PCMB, but also as a thermal connection between the outdoor and indoor environment due to its thermal insulation function, which reduces the influence of the changing outdoor environment.
KW - PCMB
KW - latent heat storage
KW - optimal heat storage
KW - heat transfer
KW - thermal comfort
KW - daily thermal comfort rate
UR - http://www.sciencedirect.com/science/article/pii/S1359431116300710
U2 - 10.1016/j.applthermaleng.2016.01.121
DO - 10.1016/j.applthermaleng.2016.01.121
M3 - Article
SN - 1359-4311
VL - 99
SP - 690
EP - 702
JO - Applied Thermal Engineering
JF - Applied Thermal Engineering
ER -