新型光伏直膨式太阳能/空气能多能互补热泵性能

doi:10.11949/0438-1157.20191150

摘要/Abstract

摘要：

以平板热管（微热管阵列）为核心部件，设计了一种新型太阳能光伏/空气集热蒸发器并建立了光伏直膨式太阳能/空气能多能互补热泵系统，实现全年供热水、冬季供热、夏季供冷以及全年光伏发电的功能。对北京地区3月至5月天气条件下的热泵系统性能进行不同运行模式（S、SA以及A模式）的实验研究。实验结果表明，在典型工况下S、SA与A模式的多能互补系统COP_s分别为4.8、4.2与3.8，综合效率分别为109.7%、125.9%、32.4%，即在有太阳辐照的条件下，S与SA模式下多能互补系统性能优于A模式。该新型光伏直膨式太阳能/空气能多能互补热泵系统性能优良，研究结果为该系统应用提供了基础数据支撑。

关键词: 微热管阵列, 微通道, 太阳能, 直膨式热泵, 多能互补, 再生能源

Abstract:

With flat heat pipe (micro-heat pipe array) as the core component, a new type of PV/T-air collecting evaporator and direct-expansion PV/T-air source heat pump system were designed and built to realize the functions of year-round water heating, winter heating, summer cooling and year-round photovoltaic power production. Experimental study on the performance of heat pump system under the weather conditions from March to May in Beijing was carried out in different operating models (S, SA and A).The experimental results show that the COP_S of model S, SA and A is 4.8, 4.2 and 3.8,the η of three models is 109.7%, 125.9% and 32.4% under typical working conditions, which means under the condition of solar irradiation, the performance of the multienergy complementary system in mode S and SA is better than that in mode A. The new heat pump system has a significant performance, and the experimental results provide basic data support for its application.

Key words: micro-heat pipe array, microchannels, solar energy, direct-expansion heat pump, multi-energy complementary, renewable energy

中图分类号:

TK 02

杜伯尧, 全贞花, 侯隆澍, 赵耀华, 任海波. 新型光伏直膨式太阳能/空气能多能互补热泵性能[J]. 化工学报, 2020, 71(S1): 368-374.

Boyao DU, Zhenhua QUAN, Longshu HOU, Yaohua ZHAO, Haibo REN. Performance of direct-expansion photovoltaic/thermal(PV/T)-air source heat pump system[J]. CIESC Journal, 2020, 71(S1): 368-374.

图/表 13

图1 新型太阳能光伏/空气集热蒸发器结构

Fig.1 Structure diagram of PVT/A collecting evaporator

图2 多能互补热泵系统

Fig.2 Schematic diagram of multi-energy complementary heat pump system

图3 S模式下环境温度与太阳辐照强度

Fig.3 Ambient temperature and solar irradiation intensity in model S

图4 S模式下光电效率与集热效率

Fig.4 ηe andηt in model S

图5 S模式集热蒸发器集热功率Qc、热泵制热功率Q与热泵COP

Fig.5 Qc,Q and COP in model S

图6 SA模式下环境温度与太阳辐照强度

Fig.6 Ambient temperature and solar irradiation intensity in model SA

图7 SA模式下光电效率与集热效率

Fig.7 ηe andηt in model SA

图8 SA模式下集热蒸发器集热功率Qc、热泵制热功率Q与热泵COP

Fig.8 Qc ,Q and COP in model SA

图9 A模式下环境温度与太阳辐照强度

Fig.9 Ambient temperature and solar irradiation intensity in model A

图10 A模式下热泵制热功率Q与COP

Fig.10 Q and COPin model A

表1 三种运行模式下系统热性能随水温变化（随水温升高而减低）

Table 1 Decreasing thermal performance of system in three models with increase of water temperature

运行模式

性能参数

η_t/

(%·℃^-1)

Q_c/

(W·℃^-1)

COP/

℃

图11 三种模式下集热、光电与综合效率

Fig.11 ηt, ηe and η of three models

图12 三种模式下热泵COPˉ与多能互补系统COPS

Fig.12 COPˉ and COPS of three models

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