Energy Saving Analysis and Application of Cold Rolling Circulating Water System

2020 ◽  
Keyword(s):  
Cold Rolling ◽  
Energy Saving ◽  
Water System ◽  
Circulating Water ◽  
Circulating Water System

Algorithm Modelling Research on Heating Energy-Saving Adjustment

2012 ◽  
Vol 512-515 ◽  
pp. 1263-1266
Author(s):  
Wang Sheng Liu ◽  
Shu Hong Jia ◽  
Yan Sun ◽  
Xing Long Liu
Keyword(s):  
Energy Saving ◽  
Water System ◽  
Electricity Consumption ◽  
Circulating Water ◽  
Regulation Method ◽  
Embedded Controller ◽  
Power Frequency ◽  
Atmosphere Temperature ◽  
Circulating Water System ◽  
System Operating

It has resulted in a lot of electic energy waste that the constant flow of circulating water system operating on power frequency oversupplies heat in the heating period.We investigate algorithm modelling of energy-saving adjustment, adjusting methods and development of embedded controller. Furthermore,we sum up the intelligent regulation method integrated multiple parameters.By this method,heating circulating water system would be varies with change of atmosphere temperature and hot load . Thus the purpose of lower electricity consumption is achieved that based on guarantee of heating effect.

Research on Cooling Tower Fan Energy Saving Control System Based on PLC and Inverter Technology

2013 ◽  
Vol 281 ◽  
pp. 537-541
Author(s):  
Jian Ping Chen ◽  
Xiao Kuan Shi ◽  
Hai Jun Li
Keyword(s):  
Control System ◽  
Energy Saving ◽  
Energy Savings ◽  
Cooling Tower ◽  
Water System ◽  
Circulating Water ◽  
Production Practice ◽  
Characteristics Analysis ◽  
Circulating Water System ◽  
Energy Saving Control

In order to improve the effective utilization of the cooling tower fan industrial circulating water system, and to achieve the purpose of energy saving, the paper developed a closed loop cooling tower fan is jointly controlled by the PLC and inverter energy-saving control system. With the theoretical energy-saving fan characteristics analysis, PLC is used as a controller. Combined with inverter technology, remote real-time communication is carried out via RS485 bus with the host computer, and centralized monitoring to operating status of many sets of fans is realized. Production Practice has proved that under the premise of ensuring the water temperature standards, the inverter deceleration of the cooling tower fan makes significant energy savings effect.

Energy Saving Analysis and Improvement of Cooling Circulating Water System in M199 Technological Process

2017 ◽  
Author(s):  
Zhixiang Xiong ◽  
Yin Luo
Keyword(s):  
Energy Consumption ◽  
Water Supply ◽  
Energy Saving ◽  
Technological Process ◽  
Water System ◽  
Cooling Water ◽  
Production Costs ◽  
Variable Pressure ◽  
Circulating Water ◽  
Circulating Water System

M199 is a kind of traditional drug fungicide, which is utilized widely in agriculture. The cooling circulating water system of such a production line consumes so much energy as to build cooling water supply model based on reaction vessel heat transfer mechanism and cooling requirement. The problems of the system is caused from improper pump selection, unreasonable condition adjustment methods, unscientific management, and difficulty in energy consumption evaluation and so on. In order to increase operation efficiency of the system and reduce the waste of energy, this paper surveyed the situation of equipment installation and M199 technological process, then compare the existing energy consumption with that under a variable frequency speed regulation to identify the space for energy saving, eventually complete the analysis of assessment of energy consumption in the whole system. Water supply system of variable pressure and flow is utilized under the premise of meeting the requirement of M199 technological process according to the pump affinity laws and by considering the energy-saving in the pump themselves and their systems so as to refurbish the system and realize the reduction of energy and production costs.

scholarly journals A scale removal and scale absorption method for circulating water system

2021 ◽  
Vol 676 (1) ◽  
pp. 012099
Author(s):  
Yao Yang ◽  
Xiaona Li ◽  
Xiang Li ◽  
Yuchao Li ◽  
Tianqi Meng ◽  
...  
Keyword(s):  
Water System ◽  
Absorption Method ◽  
Scale Removal ◽  
Circulating Water ◽  
Circulating Water System

Effect of heat flushing on the concentrations of Legionella pneumophila and other heterotrophic microbes in hot water systems of apartment buildings

1996 ◽  
Vol 42 (8) ◽  
pp. 811-818 ◽  
Author(s):  
Outi M. Zacheus ◽  
Pertti J. Martikainen
Keyword(s):  
Water Temperature ◽  
Legionella Pneumophila ◽  
Heterotrophic Bacteria ◽  
Water System ◽  
Water Systems ◽  
Hot Water ◽  
Circulating Water ◽  
Heterotrophic Microbes ◽  
Before And After ◽  
Circulating Water System

The decontamination of Legionella pneumophila and other heterotrophic microbes by heat flushing in four legionellae-positive hot water systems was studied. Before the decontamination procedure, the concentration of legionellae varied from 3.0 × 10−3 to 3.5 × 10−5 cfu/L and the hot water temperature from 43.6 to 51.5 °C. During the contamination the temperature was raised to 60–70 °C. All taps and showers were cleaned from sediments and flushed with hot water twice a day for several minutes. The decontamination lasted for 2–4 weeks. In a few weeks the heat-flushing method reduced the concentration of legionellae below the detection limit (50 cfu/L) in the hot circulating water system just before and after the heat exchanger. The high hot water temperature also decreased the viable counts of heterotrophic bacteria, fungi, and total microbial cells determined by the epifluorescent microscopy. However, the eradication of legionellae failed in a water system where the water temperature remained below 60 °C in some parts of the system. After the decontamination, the temperature of hot water was lowered to 55 °C. Thereafter, all the studied hot water systems were recolonized by legionellae within a few months, showing that the decontamination by heat flushing was temporary. Also, the contamination of other bacteria increased in a few months to the level before decontamination.Key words: legionellae, hot water system, decontamination, water temperature, heterotrophic bacteria.

The Pressure Loss Alarm System of Circulating Water in Calcium Carbide Furnace

2013 ◽  
Vol 401-403 ◽  
pp. 1144-1148
Author(s):  
Fen Su Shi ◽  
Yang Zhou ◽  
Yong Wu
Keyword(s):  
Real Time ◽  
Pressure Loss ◽  
Water System ◽  
Calcium Carbide ◽  
Alarm System ◽  
Monitoring Methods ◽  
Field Bus ◽  
Circulating Water ◽  
Automation And Control ◽  
Circulating Water System

In order to improve the manual monitoring methods of the circulating water in calcium carbide furnace, this paper designs a pressure loss alarm system about circulating water of calcium carbide furnace. The system completes real-time automation and control of circulating water system by combining PLC technology, field bus communication technology and configuration technology, which uses PROFIBUS field bus to communicate between upper computer and lower computer. The practical application shows that this system can effectively achieve real-time monitoring of the circulating water, fault diagnosis and maintenance management.

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