| Issue |
E3S Web Conf.
Volume 356, 2022
The 16th ROOMVENT Conference (ROOMVENT 2022)
|
|
|---|---|---|
| Article Number | 01046 | |
| Number of page(s) | 4 | |
| Section | Air Distribution and Ventilation Performance | |
| DOI | https://doi.org/10.1051/e3sconf/202235601046 | |
| Published online | 31 August 2022 | |
Numerical simulation study on heat transfer characteristics and parameter optimization of solar phase change energy storage fresh air preheating system
School of Municipal and Environmental Engineering, Shenyang Jianzhu University, Shenyang 110168, China
* Corresponding author: huangkailiang_v@163.com
In cold regions, indoor fresh air preheating in winter has received much attention. An improved fresh air preheating system using solar energy and phase change energy storage technology is proposed in this study to solve the problem of insufficient fresh air supply in cold regions. This study establishes two-dimensional mathematical model for air-type phase change energy storage device, and compares the error between them and the experimental results. The results show that the comparison between the simulated and experimentally measured is in good agreement. This study explores the effects of velocity of hot air, temperature of fresh air and temperature of hot air during simultaneous heat storage and discharge conditions by using numerical simulation method. The results show that the designed system has the ability to preheat fresh air at 4.5 °C for more than 4 hours under the condition of outdoor average temperature of -10 °C at night, and has practical promotion value. All three parameters affect the thermal performance of the system. When the hot air velocity increases from 1.5 m / s to 2.25 m / s, the liquid fraction increases by 5.16 %, 10.11 % and 14.52 % respectively. Different fresh air temperatures determine the heat storage capacity of the system under the condition of simultaneous heat storage and heat release.
© The Authors, published by EDP Sciences, 2022
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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