无霜空气源热泵系统冬季除湿性能初步实验

doi:10.11949/j.issn.0438-1157.20180691

摘要/Abstract

摘要：

通过对比现有的空气源热泵空调系统的优缺点，提出了一种新型无霜空气源热泵空调系统。该热泵系统最大的新颖之处在于热交换塔实现了“一塔三用”，不仅冬季可以无霜高效运行与再生，夏季蒸发冷却后性能也有所提升。通过搭建该系统实验平台研究了溶液塔入口空气温湿度、空气流量、溶液入口温度、溶液流量、溶液质量分数对除湿性能及空气出口温度与溶液出口温度的影响，结果表明：出口空气与溶液温度随入口空气温湿度、流量、溶液温度、质量分数的升高,溶液流量的下降而升高；溶液塔的除湿效率主要受风量和溶液流量的影响，而入口空气温湿度、入口溶液温度、溶液质量分数影响很小，溶液塔的除湿量随着室外空气湿度的升高、入口溶液温度的降低、空气流量和溶液流量的升高而升高。

关键词: 无霜, 实验验证, 除湿, 空气源热泵

Abstract:

By comparing the advantages and disadvantages of the existing air source heat pump air conditioning system, a new type of frost-free air source heat pump air conditioning system is proposed. The biggest novelty of this heat pump system is that the heat exchange tower has realized as "one tower in three uses", which can not only run and regenerate effectively without frost in winter, but also improve the performance after evaporative cooling in summer. Through constructing the heat pump system platform, the effects of ambient temperature, humidity, air volume flow rate, inlet solution temperature, solution volume flow rate and solution concentration on dehumidification performance, outlet air and solution temperature are studied. It is concluded that the outlet air and solution temperature increase with the increase of inlet air temperature, humidity, volume flow rate, solution temperature and the decrease of solution volume flow rate. As inlet air temperature rises from -4℃ to 2.5℃, the air outlet temperature increased by 3.32℃, solution tower export solution temperature increased by 1.62℃. As the rise of the solution tower entrance solution temperature, air outlet temperature increased by 1.9℃, export solution temperature increased by 2.66℃. Dehumidification efficiency is mainly affected by air and solution volume flow rate. The inlet air temperature and humidity, solution temperature and solution concentration affect it little, the dehumidification rate increases with higher outdoor air humidity, air volume flow rate, solution volume flow rate and lower solution temperature.

Key words: non-frost, experimental validation, dehumidification, air source heat pump

中图分类号:

TU 831.6

邱君君, 张小松, 李玮豪. 无霜空气源热泵系统冬季除湿性能初步实验[J]. 化工学报, 2019, 70(4): 1605-1613.

Junjun QIU, Xiaosong ZHANG, Weihao LI. Experimental research on a novel frost-free air source heat pump system[J]. CIESC Journal, 2019, 70(4): 1605-1613.

图/表 17

图1 无霜空气源热泵实验装置

Fig.1 Experimental equipment of frost-free air source heat pump

图2 新型空气源热泵夏季实验测点布置

Fig.2 Layout of new air source heat pump in summer

图3 新型空气源热泵冬季实验测点布置

Fig.3 Layout of new air source heat pump in winter

表1 测量设备详细参数

Table 1 Measuring equipment parameters

测量参数	工具编号	测量精度
水温与制冷剂温度	WZPK-163S	±0.1℃
空气温湿度	HMT120	±1%
压力	MPM480	±1%
流量	LWY-15E	±1%
功率	WT310	±1%

表2 空气及溶液入口参数

Table 2 Inlet air and solution parameters

参数	范围	基准
入口空气温度/℃	-4~2.5	2.5
入口空气湿度/(g/(kg dry air))	2~2.35	2
空气体积流量/（m3/h）	392~1241	1241
入口溶液温度/℃	-7~-3	-7
溶液体积流量/(m3/h）	0.27~0.94	0.94
溶液质量分数	0.25~0.35	0.25

图4 溶液塔入口空气温度对溶液塔出口空气及出口溶液温度的影响

Fig.4 Influence of inlet air temperature of solution tower on temperature of outlet air and outlet solution

图5 溶液塔入口空气湿度对溶液塔出口空气及出口溶液温度的影响

Fig.5 Influence of inlet air humidity of solution tower on temperature of outlet air and outlet solution

图6 溶液塔空气流量对溶液塔出口空气及出口溶液温度的影响

Fig.6 Influence of air flow rate of solution towel on temperature of outlet air and outlet solution

图7 溶液塔入口溶液温度对溶液塔出口空气及出口溶液温度的影响

Fig.7 Influence of inlet solution temperature on temperature of outlet air and outlet solution

图8 溶液塔溶液流量对溶液塔出口空气及出口溶液温度的影响

Fig.8 Influence of solution flow rate on temperature of outlet air and outlet solution

图9 溶液塔溶液质量分数对溶液塔出口空气及出口溶液温度的影响

Fig.9 Influence of solution mass fraction on temperature of outlet air and outlet solution

图10 溶液塔入口空气温度对除湿量及除湿效率的影响

Fig.10 Influence of inlet air temperature of solution tower on dehumidification amount and dehumidification efficiency

图11 溶液塔入口空气湿度对除湿量及除湿效率的影响

Fig.11 Influence of inlet air humidity of solution tower on dehumidification amount and dehumidification efficiency

图12 溶液塔空气流量对除湿量及除湿效率的影响

Fig.12 Influence of air flow rate of solution tower on dehumidification amount and dehumidification efficiency

图13 溶液塔入口溶液温度对除湿量及除湿效率的影响

Fig.13 Influence of inlet solution temperature on dehumidification amount and dehumidification efficiency

图14 溶液塔溶液流量对除湿量及除湿效率的影响

Fig.14 Influence of solution flow rate of solution tower on dehumidification amount and dehumidification efficiency

图15 溶液塔溶液质量分数对除湿量及除湿效率的影响

Fig.15 Influence of solution mass fraction on dehumidification amount and dehumidification efficiency

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