scholarly journals Design and Implementation of a Low-Energy-Consumption Air-Conditioning Control System for Smart Vehicle

2019 ◽  
Vol 2019 ◽  
pp. 1-14
Author(s):  
Chien-Lun Weng ◽  
Lih-Jen Kau
Keyword(s):  
Control System ◽  
Energy Consumption ◽  
Heat Load ◽  
Air Conditioning ◽  
Minimum Energy ◽  
Low Energy ◽  
Air Conditioner ◽  
Low Energy Consumption ◽  
Smart Vehicle ◽  
Conditioning Control

About 7% of people’s daily time is spent in taking vehicles between office and home. Besides, with the improvement of the living standard in today’s society, people’s requirements for a comfortable environment inside the car are constantly increasing and this must rely on an effective vehicle air conditioner to maintain the comfort of the cabin environment. In general, a vehicle air conditioner uses the air-mixing mode to regulate the temperature control system. In this mode of operation, the compressor needs to work continuously, which is extremely energy consuming. The vehicle’s air conditioner is greatly affected by the inner and outer heat load, which are generated therein. Furthermore, the heat load is instantly changeable. Therefore, only when the controller can adapt to the feature of heat load, then we can find the optimal control method, thus enabling the vehicle’s air conditioner to interact with the actual heat load to supply the balanced cooling capacity and, as a result, create the most comfortable environment inside the cabin with minimum energy consumption. For this purpose, we bring up in this paper a low-energy-consumption smart vehicle air-conditioning control system to detect total heat load, which can change the vehicle’s air-conditioning capacity mode to maintain the average temperature at 25.2°C∼26.2°C and the average humidity at 46.6%∼54.4% in the cabin. When the inner heat load is stable, the rest times of the compressor can reach 16∼23 times per hour, which attains a rate of fuel saving around 21%∼28%. With the proposed architecture, the purpose of the low-energy-consumption vehicle air-conditioning system can be achieved, which, at the same time, creates a comfortable environment inside the cabin.

The Strategies of Passive Energy-Efficiency Design in Low Energy Building

2013 ◽  
Vol 368-370 ◽  
pp. 1318-1321
Author(s):  
Xin Bin Wang ◽  
Jia Ping Liu ◽  
Yu Fu
Keyword(s):  
Energy Efficiency ◽  
Energy Consumption ◽  
Energy Conservation ◽  
Air Conditioning ◽  
Influence Factors ◽  
Building Design ◽  
Building Energy ◽  
Low Energy ◽  
Paper Briefly ◽  
Low Energy Consumption

This paper briefly analyzes the structure and conservation approaches of building energy consumption, analyzes the forming reason and influence factors of heating and air-conditioning energy consumption and proposes the passive energy conservation designing strategies of low energy consumption building. Through the passive methods of building design, envelop enclosure and planning landscape, the goal of last year building low energy conservation can be achieved.

Design of Central Air Conditioning Control System

2014 ◽  
Vol 602-605 ◽  
pp. 1472-1475
Author(s):  
Li Ming Wei ◽  
Chen Li
Keyword(s):  
Control System ◽  
Internal Control ◽  
Air Conditioning ◽  
Control Unit ◽  
Air Conditioner ◽  
Temperature And Humidity ◽  
Central Air Conditioning ◽  
External Equipment ◽  
Operation Results ◽  
Conditioning Control

In this paper, hardware and software of the central air-conditioning control system is researched by STC series of enhanced 8051 microcontroller. The STC11F 08XE is the main control of the hardware part. Temperature and humidity sensor regulating valve and all kinds of motor are used as external equipment to complete the temperature and humidity of building the internal control of central air conditioner. In terms of software, the program is described by protel99SE software. Microcontroller program is compiled by Microcontroller development tools keil u and STC-ISP. The temperature and humidity control and optimization of central air conditioning are completed by PID parameters. Infrared control unit is operated and liquid crystal is displayed to show the operation results.

scholarly journals VEHICLE AIR CONDITIONER (VAC) CONTROL SYSTEM BASED ON PASSENGER COMFORT: A PROOF OF CONCEPT

2022 ◽  
Vol 23 (1) ◽  
pp. 370-383
Author(s):  
Suroto Munahar ◽  
Bagiyo Condro Purnomo ◽  
Muhammad Izzudin ◽  
Muji Setiyo ◽  
Madihah Mohd Saudi
Keyword(s):  
Control System ◽  
Air Conditioning ◽  
Air Conditioner ◽  
Proof Of Concept ◽  
Passenger Cars ◽  
Air Conditioning System ◽  
Precise Control ◽  
Cabin Temperature ◽  
Air Circulation ◽  
Conditioning Control

The air conditioning system (AC) in passenger cars requires precise control to provide a comfortable and healthy driving. In an AC system with limited manual control, the driver has to repeatedly change the setting to improve comfort. This problem may be overcome by implementing an automatic control system to maintain cabin temperature and humidity to meet passenger's thermal comfort. Therefore, this paper presents the development of a laboratory-scale prototype air conditioning control system to regulate temperature, humidity and air circulation in the cabin. The experimental results show that the control system is able to control air temperature in the range of 21 °C to 23 °C and cabin air humidity between 40% to 60% in various simulated environmental conditions which indicate acceptance for comfort and health standards in the vehicle. In conclusion, this method can be applied to older vehicles with reasonable modifications. ABSTRAK: Sistem penyejuk udara (AC) pada kenderaan penumpang memerlukan ketepatan kawalan bagi menyediakan keselesaan dan kesejahteraan pemanduan. Melalui sistem AC dengan kawalan manual terhad, pemandu perlu berulang kali mengubah penyesuaian latar bagi meningkatkan keselesaan. Masalah ini dapat diatasi dengan menerapkan sistem kawalan automatik bagi menjaga suhu dan kelembapan kabin agar memenuhi keselesaan suhu penumpang. Oleh itu, kajian ini merupakan pembangunan prototaip sistem kawalan AC skala laboratari bagi mengawal suhu, kelembapan dan peredaran udara dalam kabin. Hasil eksperimen menunjukkan sistem kawalan ini mampu mengendali suhu udara pada kitaran 21 °C  hingga 23 °C dan kelembaban udara kabin antara 40% hingga 60% pada pelbagai keadaan persekitaran simulasi yang menunjukkan penerimaan standard keselesaan dan kesejahteraan kenderaan. Sebagai kesimpulan, cara ini dapat diaplikasi pada kenderaan lama dengan modifikasi bersesuaian.

scholarly journals Estimating the Efficiency of Anti - Erosion Agricultural

1970 ◽  
Vol 66 (2) ◽  
Author(s):  
Petru CARDEI ◽  
Constantin COTA ◽  
Cornelia MURARU-IONEL ◽  
Raluca SFARU
Keyword(s):  
Energy Consumption ◽  
Storage Capacity ◽  
Minimum Energy ◽  
Calculation Model ◽  
Climatic Conditions ◽  
Low Energy ◽  
Method Of Calculation ◽  
Minimum Energy Consumption ◽  
Low Energy Consumption ◽  
Sediment Profiles

The efficiency of the anti - erosion agricultural operations is one of the main objectives of the designers for machinery and soil working tools on slopes. Mathematical modelling that using a systemic approach of the phenomena and processes and realistic assumptions, allows the optimum constructive-functional parameters for soil working tools, in order to achieve a properly working with low energy consumption. Storage capacity of the sediment profiles achieved by ground shaping is properly estimated according to the geo - climatic conditions of the area. Previous researches (Cardei, Cota, 2008) led to the establishment of a calculation model in this respect. The method of calculation for choosing the geometry of profiles is the application of the final investigations, in conditions to assure a satisfactory storage capacity of sediments and a minimum energy consumption for the soil working processes.

ENERGY EFFICIENCY OF A VARIABLE SPEED OF THE CENTRALIZED AIR CONDITIONING SYSTEM USING PID CONTROLLER

2016 ◽  
Vol 78 (8-4) ◽  
Author(s):  
Henry Nasution ◽  
Afiq Aiman Dahlan ◽  
Azhar Abdul Aziz ◽  
Ulul Azmi ◽  
Sumeru Sumeru ◽  
...  
Keyword(s):  
Energy Consumption ◽  
Thermal Comfort ◽  
Pid Control ◽  
Pid Controller ◽  
Heat Load ◽  
Air Conditioning ◽  
Internal Heat ◽  
Variable Speed ◽  
Air Conditioning System ◽  
Low Energy Consumption

PID control system for air-conditioning system in residence is presented in this manuscript. The control strategy is focused on low energy consumption and thermal comfort for indoor user. The algorithm is developed to control the compressor speed at an appropriate speed according to the temperature inside the controlled area using PID controller. Software is developed to measure and interface the system with controlling the system according to the algorithm. The temperature settings are 20, 22 and 24oC with internal heat load of 0 and 1000 Watt. The results obtained proved that the technique can lower the energy consumption and increased temperature control for better thermal comfort compared to on/off controller

Low Energy Consumption Metro Station System Technology

2013 ◽  
Vol 850-851 ◽  
pp. 342-345
Author(s):  
Wen Hui Huang ◽  
Shuo Wang ◽  
Yu Zhou
Keyword(s):  
Energy Consumption ◽  
Science And Technology ◽  
Transportation Systems ◽  
Low Energy ◽  
Air Conditioner ◽  
System Technology ◽  
Railway Transportation ◽  
Metro Station ◽  
Energy Recuperation ◽  
Low Energy Consumption

Public railway transportation has been universally utilized in urban cities, for it faster, safer and more convenient way of transportation. Due to the development of science and technology, todays metro stations are intelligent and electronic. However, it would lead to more energy consumption while lots of electric facilities (e.g. ticket-checking system, air-conditioner, etc.) are widely operated. This article will present sorts of solutions to decrease the energy consumption on metro station, utilizing energy recuperation ticket-checking systems. Firstly, the feasibility of this solution would be proved by the data based on the research of Chinas urban railway transportation systems. And then several current solutions on energy recuperation ticket-checking systems will be analysis. As the most important, the tendency of this type of ticket-checking system will be illustrated. Finally, the prospect of energy recovering gates will be given at the last of thesis.

scholarly journals An Internet of Things-Based Low-Power Integrated Beekeeping Safety and Conditions Monitoring System

Inventions ◽  
2019 ◽  
Vol 4 (3) ◽  
pp. 52 ◽  
Author(s):  
Sotirios Kontogiannis
Keyword(s):  
Control System ◽  
Energy Consumption ◽  
Low Power ◽  
System Architecture ◽  
Data Transmission ◽  
Low Energy ◽  
Facility Conditions ◽  
Holistic Management ◽  
Low Energy Consumption ◽  
And Control

This paper proposes a holistic management and control system for the apiculture industry (Integrated Beekeeping System of holistic Management and Control – IBSMC). This integrated beehive array system mainly focuses on the regulation of bees living conditions, targeting both minimizing bee swarm mortality and maximizing productivity. Within the proposed IBSMC system architecture, additional security functionalities are implemented for bee monitoring, low energy consumption and incidents response. As a complete unit, the proposed IBSMC system is both a hive conditions monitoring and safety system. It communicates with the outer world using low power RF data transmission and the LoRaWAN transceivers. This paper presents the proposed IBSMC architecture consisting of new beehive cells embedded with functionalities for integrated conditions regulation and security provisions, as well as the communication protocols used for facility-conditions management, incidents’ acquisition and incidents’ response.

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