Performance analysis of an automotive heat pump system with desiccant coated heat exchangers

Na, Sun-Ik; KIM, Minsung; KIM, Min Soo

doi:10.1016/j.applthermaleng.2022.118723

Cited by 11 publications

(4 citation statements)

References 54 publications

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“…27,28 Currently, silica gelbased desiccants dominate DCHE investigations. 9,[22][23][24][25]30,31 Being abundant and highly stable, silica gel is an economical desiccant. 26,32,33 Yet, silica gel is not an ideal desiccant because of its low water uptake capacity and low thermal conductivity which translate to its high heat of adsorption and requirement for high regeneration temperatures.…”

Section: Introductionmentioning

confidence: 99%

Enhanced moisture sorption through regulated MIL-101(Cr) synthesis and its integration onto heat exchangers

Wee,

Chinnappan,

Shang

et al. 2024

J. Mater. Chem. A

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Section: Introductionmentioning

confidence: 99%

Enhanced moisture sorption through regulated MIL-101(Cr) synthesis and its integration onto heat exchangers

Wee,

Chinnappan,

Shang

et al. 2024

J. Mater. Chem. A

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“…[8][9][10] However, at low temperatures, as the refrigerant suction density decreases and the pressure ratio increases, the heating performance of the heat pump decreases sharply. [11] Therefore, it is important to improve the efficiency of BEV heat pump air conditioners and to reduce heating energy consumption. [12] Compared to the traditional air conditioning system, the thermal management system of electric vehicles also needs to take into thermal system integration of the passenger compartment, battery, and electronic devices.…”

Section: Introductionmentioning

confidence: 99%

“…[ 8–10 ] However, at low temperatures, as the refrigerant suction density decreases and the pressure ratio increases, the heating performance of the heat pump decreases sharply. [ 11 ] Therefore, it is important to improve the efficiency of BEV heat pump air conditioners and to reduce heating energy consumption. [ 12 ]…”

Section: Introductionmentioning

confidence: 99%

Control Strategy Analysis of Vehicle Thermal Management System Based on Motor Heat Utilization

Jing

et al. 2023

Energy Tech

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Waste heat recovery can not only reduce the heating energy consumption during heating, but also assist the PTC to improve the heating efficiency. In this work, a motor waste heat recovery system composed of two four‐way valves is proposed. Through simulation and test, the thermal management system model is established based on the parameters of each component. Experiments and simulations were also conducted at 0 °C, 20 °C and 40 °C. Under the New European Driving Cycle (NEDC), it was verified that the motor waste heat recovery system can meet the heating demand of the cabin. At the same time the temperature rise of the battery increased by 2.9% from 0 °C to 15 °C compared to no heat recovery system. From 0 °C to 18 °C, the cabin temperature increased by 8.1%. The cooling rate of the battery increased by 5.8% from 40 °C to 30 °C and the cooling rate of the cabin increased by 9.7% from 40 °C to 23 °C.This article is protected by copyright. All rights reserved.

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“…The simulation results showed that the proposed system consumes less energy than the conventional system. Na et al 19 further proposed a continuously operable system applying double desiccant-coated heat exchangers. They developed a comprehensive numerical model of the cabin heat load model, the desiccant-coated heat exchanger model, and the heat pump system model, and experimentally validated the numerical model.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation on dehumidification and heating performance of a heat pump system concerning dew or fog removal for electric vehicles

Jin

Lei

2022

Proceedings of the Institution of Mechanical Engineers, Part D:

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Dehumidification and heating of electric vehicle heat pump systems are of significance in ensuring comfort and safety in winter. This study purposes to investigate the dehumidification and heating performances of a new-designed heat pump system. A numerical model is established and serves for analyzing the ventilation conditions for dew or fog removal of the windshield. Both ventilation conditions of the heat pump and the inner surface temperature of the windshield were investigated as per experimental measurements. Meanwhile, dehumidification rates, effective heating capacity, and coefficients of performance were analyzed under different operating conditions. It is shown that the heat-pump’s air outlet conditions are within the range of suitable ventilation conditions meeting the needs of dew or fog removal. At the same compressor speed, the inlet air humidity of the evaporator inlet decreases, the dew or fog removal is more effective, and the coefficient of performance for heating increases but the coefficient of performance for dehumidification decreases. In the case of the same inlet air humidity, the dew or fog removal effect is better with increasing compressor speed; Meantime, the coefficient of performance for heating and dehumidification both decrease. The lower compressor speed and lower inlet air humidity for the evaporator enable the heat pump system to meet the demand for dew or fog removal of the windshield and ensure thermal comfort in the cabin. This study verifies the effectiveness of heat pump systems for dehumidification and heating and would be valuable to promote heat pump systems.

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Performance analysis of an automotive heat pump system with desiccant coated heat exchangers

Cited by 11 publications

References 54 publications

Enhanced moisture sorption through regulated MIL-101(Cr) synthesis and its integration onto heat exchangers

Enhanced moisture sorption through regulated MIL-101(Cr) synthesis and its integration onto heat exchangers

Control Strategy Analysis of Vehicle Thermal Management System Based on Motor Heat Utilization

Experimental investigation on dehumidification and heating performance of a heat pump system concerning dew or fog removal for electric vehicles

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