scholarly journals Experimental study on the thermal performance of an air conditioning system in a pure electric vehicle

2021 ◽  
pp. 93-93
Author(s):  
Enhai Liu ◽  
Haijun Li ◽  
Yajun Gong ◽  
Yuping Wei ◽  
Haifei Chen
Keyword(s):  
Experimental Study ◽  
Electric Vehicle ◽  
Heat Pump ◽  
Thermal Performance ◽  
Air Conditioning ◽  
Air Conditioning System ◽  
Factors Affecting ◽  
Discharge Temperature ◽  
Heating Capacity ◽  
Main Factors

This paper studies the thermal performance of an air conditioning system in a pure electric vehicle. An experiment is designed to examine the main factors affecting the performance, and the experimental results show that a heat pump with a low-pressure gas-mixing system can increase the heating capacity and decrease the discharge temperature.

scholarly journals Heat pump air conditioning system for pure electric vehicle at ultra-low temperature

2014 ◽  
Vol 18 (5) ◽  
pp. 1667-1672 ◽  
Author(s):  
Hai-Jun Li ◽  
Guang-Hui Zhou ◽  
An-Gui Li ◽  
Xu-Ge Li ◽  
Ya-Nan Li ◽  
...  
Keyword(s):  
Low Temperature ◽  
Electric Vehicle ◽  
Heat Pump ◽  
Air Conditioning ◽  
Heating System ◽  
Experimental Results ◽  
Air Conditioning System ◽  
Discharge Temperature ◽  
Heating Capacity ◽  
Environment Temperature

When the ordinary heat pump air conditioning system of a pure electric vehicle runs at ultra-low temperature, the discharge temperature of compressor will be too high and the heating capacity of the system will decay seriously, it will lead to inactivity of the heating system. In order to solve this problem, a modification is put forward, and an experiment is also designed. The experimental results show that in the same conditions, this new heating system increases more than 20% of the heating capacity; when the outside environment temperature is negative 20 degrees, the discharge temperature of compressor is below 60 degrees.

scholarly journals Experimental study on performance of heat pump air conditioning system for pure electric bus with economizer

2021 ◽  
pp. 91-91
Author(s):  
Zhiyong Su ◽  
Haijun Li ◽  
Enhai Liu ◽  
Zhonglai Zhang ◽  
Zhuang Yu ◽  
...  
Keyword(s):  
Heat Pump ◽  
Air Conditioning ◽  
Low Pressure ◽  
Air Conditioning System ◽  
Factors Affecting ◽  
Exhaust Temperature ◽  
Air Supply ◽  
Electric Bus ◽  
Main Factors ◽  
Set Up

When the exhaust temperature of heat pump air conditioning system of pure electric bus is too high, the performance of the system is attenuated. In order to solve the problem, an alternative system with low pressure air supply is developed. The experimental platform is set up to reveal the main factors affecting the refrigeration and heating performance of the system. The results show that the low-pressure air-supply technology can significantly reduce the exhaust temperature of the compressor.

Recent Advances on the Electric Vehicle Heat Pump Air Conditioning Systems

2021 ◽  
Vol 14 ◽  
Author(s):  
Bin Peng ◽  
Yubo Zhang ◽  
Pengcheng Zhang ◽  
Hanif Ullah
Keyword(s):  
Electric Vehicle ◽  
Heat Pump ◽  
Electric Vehicles ◽  
Air Conditioning ◽  
New Technology ◽  
Research Work ◽  
High Energy ◽  
Air Conditioning System ◽  
Electrical Vehicle ◽  
Recent Developments

Background: Heat pump air conditioning technology has broad application prospects and high market value in the field of electric automobiles owing to its increasing performance and energy saving. Pure electric vehicles require high-energy consumption at low temperatures, which seriously affects the popularity of electric vehicles with a heat pump air conditioning system. Objective: The aim of this research is to describe the recent developments in the study of the heat pump air conditioning system for electric vehicles. Methods: This paper summarizes the research work of scholars published worldwide based on the electric vehicle heat pump air conditioning system, premised on lately published patents and journal articles. Starting from the components of the air conditioning system, focus on the research results and development trends that have been achieved in this field. Results: The new technology path and pattern of the electrical vehicle heat pump air conditioning system provide methods and suggestions for future growth, put forward by the current development situation. Conclusion: The latest progress of the electric vehicle heat pump air conditioning system has been summarized and prospected. There are still some problems and technical bottlenecks in heat pump air conditioning system. It is of great significance to improve the environmental adaptability of electric vehicles and optimize the reasonable heat pump air conditioning system for the endurance of electric vehicles.

scholarly journals Performance investigation of a novel hybrid deep-dehumidification process using liquid desiccant

2019 ◽  
Vol 111 ◽  
pp. 01047
Author(s):  
Bowen Guan ◽  
Jun Liu ◽  
Xiaohua Liu ◽  
Tao Zhang ◽  
Liangliang Chen ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Heat Pump ◽  
System Performance ◽  
Air Conditioning ◽  
Cooling Capacity ◽  
Liquid Desiccant ◽  
Humidity Ratio ◽  
Air Conditioning System ◽  
Heating Capacity ◽  
Flow Through

As one of the essential dehumidification ways, liquid desiccant air conditioning system has developed quickly in recent years, especially in the deep dehumidification field. A novel hybrid deep- dehumidification system using liquid desiccant driven by heat pump is proposed in this study to simplify the arrangement of air ducts and guarantee a competitive energy efficiency. In the proposed process, the regenerator, condensing dehumidifier and liquid dehumidifier are cascaded, and the process air flow through them sequentially. Heat pump cycle is utilized in the system, where the cooling capacity of evaporator is used to cool the liquid desiccant in dehumidifier, and the heating capacity of condenser is used for desiccant regeneration. The humidity ratio of the supplied air is as low as 2.6 g/kg. No extra regeneration air or corresponding air duct are needed in the proposed process, which obviously simplifies the layout of the system. Performance of the proposed system is then analysed by numerical results. It’s indicated 17.5~29.2% energy is saved compared with the conventional deep dehumidification process with two-stage heat pump, with the outlet humidity ratio of 2.6 g/kg.

Thermal performance of helicopter air conditioning system with lube oil source (LOS) heat pump

Energy ◽  
2020 ◽  
Vol 190 ◽  
pp. 116446
Author(s):  
Liping Pang ◽  
Kun Luo ◽  
Yanping Yuan ◽  
Xiaodong Mao ◽  
Yufeng Fang
Keyword(s):  
Heat Pump ◽  
Thermal Performance ◽  
Air Conditioning ◽  
Air Conditioning System ◽  
Oil Source

scholarly journals Experimental study on the thermal performance of solar air conditioning system with MEPCM cooling storage

2019 ◽  
Vol 14 (1) ◽  
pp. 83-88 ◽  
Author(s):  
Lin Zheng ◽  
Wei Zhang ◽  
Lingzhi Xie ◽  
Wei Wang ◽  
Hao Tian ◽  
...  
Keyword(s):  
Experimental Study ◽  
Thermal Performance ◽  
Air Conditioning ◽  
Air Conditioning System
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