scholarly journals Study on energy saving of air conditioning frequency conversion and speed regulation in public buildings in hot summer and warm winter areas

2020 ◽  
Vol 608 ◽  
pp. 012001
Author(s):  
Yu Huang
Keyword(s):  
Energy Saving ◽  
Air Conditioning ◽  
Frequency Conversion ◽  
Public Buildings ◽  
Warm Winter ◽  
Speed Regulation

Research on Constant Pressure of Air Supplying and Energy Saving for the Air Conditioning System

2012 ◽  
Vol 164 ◽  
pp. 362-365
Author(s):  
Guang Zhen Cheng ◽  
Zuo Qing Liu ◽  
Hong Fei Lin
Keyword(s):  
Air Conditioning ◽  
Frequency Conversion ◽  
Constant Pressure ◽  
Frequency Control ◽  
Air Flow ◽  
Air Conditioning System ◽  
Velocity Modulation ◽  
Speed Regulation ◽  
Soft Start ◽  
Energy Conservation Principle

This paper provides a method of supply constant pressure air for air conditioning system. It analysis the energy consumption betwwen the damper adjuste air flow with variable frequency speed regulation adjuste air flow. The paper Introduce the Energy conservation principle of the frequency control blower. The supplying air Pipeline subject to a uniform force, the equipments mechanical properties was improved.The results show that Uses the frequency conversion velocity modulation to carry on supply constant pressure air, obviously reduces the energy consumption.The electrical motor starting characteristic is improved, realizes the electrical motor soft start.

Energy Saving Control System for Central Air-Conditioning Based on Terminal Temperature Measuring and Frequency Conversion Control Technology

2011 ◽  
Vol 201-203 ◽  
pp. 2144-2153
Author(s):  
Hong Yu Zhou ◽  
Xiao Jian Chen ◽  
Zi Hu Chen ◽  
Ming Wei Tong
Keyword(s):  
Control System ◽  
Energy Saving ◽  
Air Conditioning ◽  
Frequency Conversion ◽  
High Energy ◽  
Control Technology ◽  
Water Pump ◽  
Temperature Measuring ◽  
Central Air Conditioning ◽  
Energy Saving Control

In view of the insufficiency of central air-conditioning system that FCU, water pumps and air blower’s movement connot match with the actual operating load when varying duty, an energy saving control system for central air-conditioning based on terminal temperature measuring and frequency conversion control technology is proposed. This system can real-time measure different floors’ and nods’ temperatures in the building, and export orders to control the frequency of FCU, chilled water pump, cooling water pump and cooling tower air blower. To overcome big delay, large inertia and variable condition of control object, the dnamic fzzy nural network algorithm(DFNN), is applied into the control system. According to the practical running situations, the energy saving control system has advantages as high energy saving rate, high stability, good maintainability, which may be promoted the application vigorously.

The Research of Energy-Saving in Air Conditioning Water Cooling System by Frequency Conversion Pump and Constant Pressure Control

2013 ◽  
Vol 446-447 ◽  
pp. 1207-1210 ◽  
Author(s):  
Hong Jie Wang ◽  
Fang Wang ◽  
Yuan Yuan Huang ◽  
Liang Zhang
Keyword(s):  
Energy Saving ◽  
Air Conditioning ◽  
Frequency Conversion ◽  
Constant Pressure ◽  
Cooling System ◽  
Branch Pipe ◽  
Pressure Control ◽  
Water Cooling ◽  
Water Pump ◽  
Water Cooling System

The main research point is analysis of energy conservation on water cooling system in air conditioning engineering in this paper. After discussing the running characteristics for frequency water pump controlling variable speed and changing the flow. Then the cooling system adopts the new control method that constant branch pipe pressure difference in the most unfavorable end, and the water pump in parallel configuration, combined with the frequency conversion technology. At last from the experiment data and the actual test of the water cooling system, the energy-saving effect with variable pump of constant pressure control is validated.

Energy Saving Analysis and Application of Secondary Pump in Air Conditioning Water System

2012 ◽  
Vol 516-517 ◽  
pp. 1235-1239
Author(s):  
Gang Guo ◽  
Rui Li
Keyword(s):  
Energy Conservation ◽  
Energy Saving ◽  
Air Conditioning ◽  
Frequency Conversion ◽  
Flow System ◽  
Water System ◽  
Variable Flow ◽  
Energy Saving Potential ◽  
Load Change

The application of frequency conversion technique in secondary pump and variable flow system is expounded in this essay. In the view of energy conservation, the secondary frequency conversion pump in variable flow system is in favor of energy conservation due to its variability on power according to the end load change, the principle of frequency conversion pump is also analysed. Combined with actual project case, he energy saving potential of secondary pump and variable flow system is discussed.

Research Based on the Actual Project of Central Air Conditioning Intelligent Frequency Conversion System

2014 ◽  
Vol 672-674 ◽  
pp. 1688-1692
Author(s):  
Yan Ling Lv ◽  
Chong Teng ◽  
Wen Hai Chen
Keyword(s):  
Energy Saving ◽  
Air Conditioning ◽  
Frequency Conversion ◽  
Water Cycle ◽  
Frequency Converter ◽  
Actual System ◽  
Air Conditioning System ◽  
Control Cabinet ◽  
Central Air Conditioning ◽  
Control Part

At present, with the development of science and technology, central air conditioning systems had made great progress. Because of the earlier central air conditioning system have some shortcomings. Such as hunge energy consumption, water cycle equipment wear. Now engineer put forward a variety of solutions. One of the most mainstream solutions is technology of frequency conversion water cycle central air-conditioning system and the central air conditioning system of intelligent sending wind energy saving technology. This design is for central air conditioning system of a company's actual renovation project. It is equipped with technology of frequency conversion water cycle central air-conditioning system. Mainly consist of the control part, frequency converter part and the water cycle part. This paper firstly introduces the working principle of general frequency converter PID control central air conditioning system. And from the control cabinet part, motor start part, PLC control part, and the frequency converter set part introduces the design. And analyzed the operating results. Because of using negative feedback, the temperature of system become stable. Through PLC intelligent control, can also make the system more energy conservation and environmental protection. Through the analysis of the actual system running data, verified the system has a considerable energy saving ability.

Feasibility Study on the Boiler Induced Draft Fan Energy Saving Frequency Conversion Retrofit

2013 ◽  
Vol 694-697 ◽  
pp. 1549-1552
Author(s):  
Chuan Zun Zhao ◽  
Zi Han Yan
Keyword(s):  
Energy Saving ◽  
High Voltage ◽  
Frequency Conversion ◽  
Feasibility Analysis ◽  
Voltage Inverter ◽  
Speed Regulation ◽  
Control Precision ◽  
High Control ◽  
Saving Effect ◽  
Induced Draft Fan

Aiming at the badly needed goal of energy saving, the retrofit is implemented by adopting the stepless speed regulation of motor driving by the high-voltage inverter to regulate the air quantity. The inverter is taken its character of easy manipulation, small maintenance, high control precision as the advantage to replace the traditional device like air door operated and wind deflector operated methods. Furthermore, the feasibility analysis for the energy-saving effect after retrofit will be conducted. It has been concluded that there are obvious improvements both in energy saving and operational stability after the frequency conversion retrofit on the machine.

Study of Frequency Conversion Energy-Saving Reconstruction for Central Air-Conditioning

2014 ◽  
Vol 496-500 ◽  
pp. 1143-1146
Author(s):  
Hong Yan Hua ◽  
Zhen Zhang
Keyword(s):  
Energy Saving ◽  
Air Conditioning ◽  
Frequency Conversion ◽  
Water System ◽  
Variable Frequency ◽  
Air Conditioning System ◽  
Large Power ◽  
Central Air Conditioning ◽  
Conditioning Equipment ◽  
Control Principle

Water system is one of the significant compositions with large power consumption in air-conditioning equipment. From viewpoint of energy-saving, the variable frequency operational principle of the water system is analyzed, the merits and demerits of operating water system under power frequency or variable frequency are compared, and the control principle of the energy-saving revamping project is introduced. In addition, combining with the specific project, the benefit of energy-saving for the water system is analyzed. The result shows that after revamping, the air-conditioning system runs properly, both the indoor temperature and humidity meet the specifications; the revamping technology offers significant energy-saving effects.

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