MULTI-PARAMETER OPTIMIZATION OF FORCED CONVECTION RADIATOR FOR HEAT PUMP SPACE HEATING

Liang Haoyu; Jia Jie; Zhou Xuan; Tian Qi; Pang Wenxing; Lee W L

doi:10.19912/j.0254-0096.tynxb.2022-0971

PDF(2748 KB)

Acta Energiae Solaris Sinica ›› 2023, Vol. 44 ›› Issue (10) : 107-112. DOI: 10.19912/j.0254-0096.tynxb.2022-0971

MULTI-PARAMETER OPTIMIZATION OF FORCED CONVECTION RADIATOR FOR HEAT PUMP SPACE HEATING

Liang Haoyu¹, Jia Jie¹, Zhou Xuan¹, Tian Qi¹, Pang Wenxing², Lee W L³

Author information +

History +

Abstract

To improve the operating efficiency of the heat pump heating systems, this paper proposed a forced convection-based radiator as the indoor terminal of heat pump. On the basis of actual measurements, this paper used CFD to simulate the indoor thermal environment created by forced convection radiators in a typical office. With the goal of maximizing the energy saving potential, the air supply velocity and the surface temperature of the radiator were optimized simultaneously considering thermal comfort constraints. The study indicates that the effect of air supply velocity and surface temperature on the indoor thermal environment were coupled. To effectively avoid the human body wind feeling caused by forced air supply, installing a baffle at the air outlet of the radiator was recommended. The optimized radiator surface temperature is 41-45 ℃ with the air supply velocity in the range of 1.2-1.9 m/s, indicating that the proposed technology can lead to significant energy benefits.

Key words

computational fluid dynamics / heat pump system / radiators / space heating / energy efficiency / forced convection

Cite this article

EndNote

Ris (Procite)

Bibtex

Download Citations

Liang Haoyu, Jia Jie, Zhou Xuan, Tian Qi, Pang Wenxing, Lee W L. MULTI-PARAMETER OPTIMIZATION OF FORCED CONVECTION RADIATOR FOR HEAT PUMP SPACE HEATING[J]. Acta Energiae Solaris Sinica. 2023, 44(10): 107-112 https://doi.org/10.19912/j.0254-0096.tynxb.2022-0971

References

[1] 李露露, 尹应德, 刘世杰, 等. 供暖水温对低温空气源热泵制热性能影响的实验研究[J]. 太阳能学报, 2023, 44(4): 377-383.
LI L L, YIN Y D, LIU S J, et al.Experimental study on effect of heating water temperature on heating performance of low-temperature air source heat pump[J]. Acta energiae solaris sinica, 2023, 44(4): 377-383.
[2] 陈晓宁, 李万勇, 张成全, 等. 低温环境下户式变频空气源热泵地板辐射采暖系统性能测试及分析[J]. 太阳能学报, 2018, 39(1): 57-63.
CHEN X N, LI W Y, ZHANG C Q, et al.Performance measurement and analysis of floor heating system with frequency inverter air source heat pump at low ambient temperatures[J]. Acta energiae solaris sinica, 2018, 39(1): 57-63.
[3] HESARAKI A, BOURDAKIS E, PLOSKIĆ A, et al.Experimental study of energy performance in low-temperature hydronic heating systems[J]. Energy and buildings, 2015, 109: 108-114.
[4] MYHREN J A, HOLMBERG S.Design considerations with ventilation-radiators: comparisons to traditional two-panel radiators[J]. Energy and buildings, 2009, 41(1): 92-100.
[5] MYHREN J A, HOLMBERG S.Improving the thermal performance of ventilation radiators-the role of internal convection fins[J]. International journal of thermal sciences, 2011, 50(2): 115-123.
[6] MYHREN J A, HOLMBERG S.Performance evaluation of ventilation radiators[J]. Applied thermal engineering, 2013, 51(1/2): 315-324.
[7] 蔡鹏飞, 陈宝明, 刘芳, 等. 变热流条件下多孔介质复合腔体自然对流的数值模拟[J]. 太阳能学报, 2016, 37(1): 122-128.
CAI P F, CHEN B M, LIU F, et al.Numerical study on natural convection in a cavity partially filled with porous medium under variable heat flux conditions[J]. Acta energiae solaris sinica, 2016, 37(1): 122-128.
[8] ASHRAE standard 113-2013, Method of testing for room air diffusion[S].
[9] 陶文铨. 数值传热学[M]. 西安: 西安交通大学出版社, 1988.
TAO W Q.Numerical heat transfer[M]. Xi’an: Xi’an Jiaotong University Press, 1988.
[10] 韩占忠, 王敬, 兰小平. FLUENT: 流体工程仿真计算实例与应用[M]. 北京: 北京理工大学出版社, 2004.
HAN Z Z, WANG J, LAN X P.FLUENT:fluid engineering simulation calculation examples and applications[M]. Beijing: Beijing Insititute of Technology Press, 2004.
[11] GB 50736—2012, 民用建筑供暖通风与空气调节设计规范[S].
GB 50736—2012, design code for heating, ventilation and air conditioning in civil buildings[S].