| 基于余热回收的电动客车喷射补气热泵的制热性能 |
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| 引用本文： | 顾潇,邹慧明,韩欣欣,唐明生,田长青.基于余热回收的电动客车喷射补气热泵的制热性能[J].化工学报,2021,72(Z1):326-335. |
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| 作者姓名： | 顾潇 邹慧明 韩欣欣 唐明生 田长青 |
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| 作者单位： | 1.上海海事大学商船学院，上海 201306;2.中国科学院空间功热转换技术重点实验室，中国科学院理化技术研究所，北京 100190;3.河南理工大学，河南 焦作 454000 |
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| 基金项目： | 国家重点研发计划项目(2018YFB0105900);国家自然科学基金项目(51676201) |
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| 摘 要： | 根据电动汽车热泵在低温下的制热需求并延长车辆行驶里程，开发了车外换热器支路和余热换热器支路并联的余热回收系统并进行了制热性能试验研究。试验结果显示，对于并联余热回收支路的喷射补气式热泵系统，补气支路压力和补气流量均随着余热量的增加而有明显的提升，而吸气主路流量受余热换热器出口过热度的影响。车外换热器支路和余热换热器支路的流量比也呈线性关系，流量比斜率与余热换热器出口相态有关。并联余热回收喷射补气热泵系统的制热性能随余热量的变化受压缩机吸气量和补气量这两个因素的共同影响。在7℃相对较高的环境工况下，余热量的增加有利于制热量的提升但COP没有优势；在-20℃较低的环境工况下，余热量的增加使得补气流量增长较大，但吸气流量衰减严重，对系统的制热性能提升不明显；在-10～0℃的环境工况下，制热量和COP都随余热量的增加而提升较大，-10℃时，1.8 kW余热量条件下的制热量比0.9 kW余热量条件下的制热量增加了11.6%，COP提升9.18%。
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| 关 键 词： | 热力学过程 传热 回收 电动客车 并联系统 喷射补气 |
| 收稿时间： | 2020-11-02 |
Heating performance of vapor injection heat pump based on waste heat recovery |
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| GU Xiao,ZOU Huiming,HAN Xinxin,TANG Mingsheng,TIAN Changqing.Heating performance of vapor injection heat pump based on waste heat recovery[J].Journal of Chemical Industry and Engineering(China),2021,72(Z1):326-335. |
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| Authors: | GU Xiao ZOU Huiming HAN Xinxin TANG Mingsheng TIAN Changqing |
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| Affiliation: | 1.Merchant Marine College, Shanghai Maritime University, Shanghai 201306, China;2.Key Laboratory of Science and Technology on Space Energy Conversion, Technical Institute of Physics and Chemistry, CAS, Beijing 100190, China;3.Henan Polytechnic University, Jiaozuo 454000, Henan, China |
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| Abstract: | According to the heating requirements of electric vehicles (EVs) heat pumps in low ambient temperatures and extending the mileage of EVs, a waste heat recovery system in which the heat exchanger branch outside the vehicle and the branch of the waste heat exchanger are connected in parallel was developed and an experimental study on the heating performance was conducted. The experimental results show that, for the vapor injection heat pump system with parallel waste heat recovery branches, the pressure and mass flow of the vapor injection branch are significantly increased with the increase of the waste heat, while the mass flow of the main-branch is affected by the superheat at the outlet of the waste heat exchanger. The flow ratio of the out-door heat exchanger and the waste heat exchanger has a linear relationship, and the slope of the flow ratio is related to the outlet phase state of the waste heat exchanger. Under the relatively high ambient working conditions of 7℃, the increase of waste heat is beneficial to the increase of heating performance, but COP has no advantage; under the lower ambient working conditions of -20℃, the increase of waste heat increases the flow of injection mass large, but the suction mass flow is seriously attenuated, and the heating performance of the system is not significantly improved; under ambient working conditions of about -10—0℃, the heating performance and COP are greatly increased with the increase of waste heat, at -10℃, the heating performance with 1.8 kW waste heat increased by 11.6% compared to that with 0.9 kW waste heat, and the COP increased by 9.18%. |
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| Keywords: | thermodynamics process heat transfer recovery electric vehicle parallel system vapor injection |
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