Experimental research on the humidity in a passenger car cabin equipped with an air cooling system - development of a simplified model

Gładyszewska-Fiedoruk, K.; Teleszewski, Tomasz Janusz

doi:10.1016/j.applthermaleng.2022.119783

Cited by 4 publications

(2 citation statements)

References 38 publications

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“…The standard HVAC (heating, ventilation, and air conditioning) parameters studied include temperature and air speed [8][9][10][11][12][13][14][15][16]. Additionally, studies are carried out on air humidity, oxygen, and carbon dioxide concentrations [17][18][19][20]. Much attention is also paid to studying the movement of pollutants and pathogens [21][22][23][24].…”

Section: Introductionmentioning

confidence: 99%

Improving the Energy Efficiency of Vehicles by Ensuring the Optimal Value of Excess Pressure in the Cabin Depending on the Travel Speed

Panfilov,

Beskopylny,

Meskhi

2024

Fluids

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This work is devoted to the study of gas-dynamic processes in the operation of climate control systems in the cabins of vehicles (HVAC), focusing on pressure values. This research examines the issue of assessing the required values of air overpressure inside the locomotive cabin, which is necessary to prevent gas exchange between the interior of the cabin and the outside air through leaks in the cabin, including protection against the penetration of harmful substances. The pressure boost in the cabin depends, among other things, on the external air pressure on the locomotive body, the power of the climate system fan, and the ratio of the input and output deflectors. To determine the external air pressure, the problem of train movement in a wind tunnel is considered, the internal and external fluids domain is considered, and the air pressure on the cabin skin is determined using numerical methods CFD based on the Navier–Stokes equations, depending on the speed of movement. The finite-volume modeling package Ansys CFD (Fluent) was used as an implementation. The values of excess internal pressure, which ensures the operation of the climate system under different operating modes, were studied numerically and on the basis of an approximate applied formula. In particular, studies were carried out depending on the speed and movement of transport, on the airflow of the climate system, and on the ratio of the areas of input and output parameters. During a numerical experiment, it was found that for a train speed of 100 km/h, the required excess pressure is 560 kPa, and the most energy-efficient way to increase pressure is to regulate the area of the outlet valves.

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Section: Introductionmentioning

confidence: 99%

Improving the Energy Efficiency of Vehicles by Ensuring the Optimal Value of Excess Pressure in the Cabin Depending on the Travel Speed

Panfilov,

Beskopylny,

Meskhi

2024

Fluids

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“…Car body painting is a process of applying paint in liquid form to a car body, to create a thin layer of hard paint [1]. The process of painting a car is a very important and vital work process, because the result of painting a car is the first part that is visible to the human eye which influences the beauty or unbeauty of a car.…”

Section: Introductionmentioning

confidence: 99%

Dry air compressor for car painting quality improvement

Waskito,

Putra,

Adri

et al. 2023

Eureka: PE

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The humidity used in the painting process greatly determines the result of painting the car body. This study aims to develop a dry air compressor that can be used to overcome car paint defects. This system consists of a 2 HP compressor engine for sucking air from the atmosphere, two air collection tubes where the first tube contains air obtained from the atmosphere and the second tube contains dry air obtained from the first tube. The inside of the first tube is given a copper coil measuring 5 mm in diameter which is connected to a 120-watt cooler while the second tube is not given a copper coil. Each tube has a diameter of 50 cm and a height of 100 cm. The addition of copper coil aims to separate air from water by means of the condensation process which is the development of this study. Testing of compressor performance is done by turning on the compressor with the exhaust valve closed. After 60 minutes, the air pressure in each tube increased from 0 Psi to 89 Psi, the humidity decreased from 52 % to 38 %, and the temperature decreased from 31.6 °C to 18.2 °C. To see the effect of cooling on the air, the exhaust valves on both tubes were opened. In the first tube there is water coming out, as much as approximately 100 ml while in the second tube there is no water coming out. The water that comes out of the first tube is caused by the condensation process that separates the air from the water and due to the influence of gravity the water falls to the bottom of the tube. The dry air contained at the top of the first tube is flowed into the second tube and is ready to be used for painting the car body. The painting results show that there are no more small holes or paint defects on the paint surface

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A self-powered and self-sensing driver behavior detection system for smart transportation

Chen,

Kong,

Fang

et al. 2024

Nano Energy

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Experimental research on the humidity in a passenger car cabin equipped with an air cooling system - development of a simplified model

Cited by 4 publications

References 38 publications

Improving the Energy Efficiency of Vehicles by Ensuring the Optimal Value of Excess Pressure in the Cabin Depending on the Travel Speed

Improving the Energy Efficiency of Vehicles by Ensuring the Optimal Value of Excess Pressure in the Cabin Depending on the Travel Speed

Dry air compressor for car painting quality improvement

A self-powered and self-sensing driver behavior detection system for smart transportation

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