Development and synchronisation of a physics-based model for heating, ventilation and air conditioning system integrated into a hybrid model

2021 ◽  
Vol 4 (3) ◽  
pp. 230
Author(s):  
Antonio Gálvez ◽  
Dammika Seneviratne ◽  
Diego Galar
Keyword(s):  
Hybrid Model ◽  
Air Conditioning ◽  
Air Conditioning System

Hybrid model based refrigerant charge fault estimation for the data centre air conditioning system

2019 ◽  
Vol 106 ◽  
pp. 392-406 ◽  
Author(s):  
Xu Zhu ◽  
Zhimin Du ◽  
Zhijie Chen ◽  
Xinqiao Jin ◽  
Xiaoqing Huang
Keyword(s):  
Hybrid Model ◽  
Air Conditioning ◽  
Fault Estimation ◽  
Air Conditioning System ◽  
Data Centre ◽  
Model Based

A control-oriented hybrid model for a direct expansion air conditioning system

2017 ◽  
Vol 155 ◽  
pp. 76-87 ◽  
Author(s):  
Xiangguo Xu ◽  
Zhiyuan Huang ◽  
Xiaofei Wang ◽  
Ziwen Zhong ◽  
Xiaobo Zhang
Keyword(s):  
Hybrid Model ◽  
Air Conditioning ◽  
Direct Expansion ◽  
Air Conditioning System

scholarly journals Hybrid Model Development for HVAC System in Transportation

Technologies ◽  
2021 ◽  
Vol 9 (1) ◽  
pp. 18
Author(s):  
Antonio Gálvez ◽  
Dammika Seneviratne ◽  
Diego Galar
Keyword(s):  
Hybrid Model ◽  
Air Conditioning ◽  
Failure Modes ◽  
Model Development ◽  
Hybrid Models ◽  
Real System ◽  
Sensor Data ◽  
Expected Improvement ◽  
Air Conditioning System ◽  
The Real

Hybrid models combine physics-based models and data-driven models. This combination is a useful technique to detect fault and predict the current degradation of equipment. This paper proposes a physics-based model, which will be part of a hybrid model, for a heating, ventilation, and air conditioning system installed in the passenger vehicle of a train. The physics-based model is divided into four main parts: heating subsystems, cooling subsystems, ventilation subsystems, and cabin thermal networking subsystems. These subsystems are developed when considering the sensors that are located in the real system, so the model can be linked via the acquired sensor data and virtual sensor data to improve the detectability of failure modes. Thus, the physics-based model can be synchronized with the real system to provide better simulation results. The paper also considers diagnostics and prognostics performance. First, it looks at the current situation of the maintenance strategy for the heating, ventilation, air conditioning system, and the number of failure modes that the maintenance team can detect. Second, it determines the expected improvement using hybrid modelling to maintain the system. This improvement is based on the capabilities of detecting new failure modes. The paper concludes by suggesting the future capabilities of hybrid models.

ANALYSIS OF COMPETING VARIANTS OF AIR CONDITIONING SYSTEMS WITHOUT AIR EXTRACTION FROM ENGINES AT THE STAGE OF PASSENGER AIRCRAFT ONBOARD SYSTEMS CONCEPTUAL DESIGN

2019 ◽  
Vol 6 (3) ◽  
pp. 80-85
Author(s):  
Denis Igorevich Smagin ◽  
Konstantin Igorevich Starostin ◽  
Roman Sergeevich Savelyev ◽  
Anatoly Anatolyevich Satin ◽  
Anastasiya Romanovna Neveshkina ◽  
...  
Keyword(s):  
Conceptual Design ◽  
Air Conditioning ◽  
Research University ◽  
Cooling System ◽  
Fuel Efficiency ◽  
Air Cooling ◽  
Moscow Aviation Institute ◽  
Air Conditioning System ◽  
Low Efficiency ◽  
Air Conditioning Systems

One of the ways to achieve safety and comfort is to improve on-board air conditioning systems.The use of air cooling machine determines the air pressure high level at the point of selection from the aircraft engine compressor. Because of the aircraft operation in different modes and especially in the modes of small gas engines, deliberately high stages of selection have to be used for ensuring proper operation of the refrigeration machine in the modes of the aircraft small gas engines. Into force of this, most modes of aircraft operation have to throttle the pressure of the selected stage of selection, which, together with the low efficiency of the air cycle cooling system, makes the currently used air conditioning systems energy inefficient.A key feature of the architecture without air extraction from the main engines compressors is the use of electric drive compressors as a source of compressed air.A comparative analysis of competing variants of on-board air conditioning system without air extraction from engines for longrange aircraft projects was performed at the Moscow Aviation Institute (National Research University).The article deals with the main approaches to the decision-making process on the appearance of a promising aircraft on-board air conditioning system at the stage of its conceptual design and formulated the basic requirements for the structure of a complex criterion at different life cycle stages.The level of technical and technological risk, together with a larger installation weight, will require significant costs for development, testing, debugging and subsequent implementation, but at the same time on-board air conditioning system scheme without air extraction from the engines will achieve a significant increase in fuel efficiency at the level of the entire aircraft.

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