Dust collection systems represent a significant portion of a wood product manufacturer’s total electricity use. The system fan works against the static pressure of the entire system—the blast gates, the ductwork, an...Dust collection systems represent a significant portion of a wood product manufacturer’s total electricity use. The system fan works against the static pressure of the entire system—the blast gates, the ductwork, and the upstream or downstream cyclone and/or baghouse. A poor system design (e.g., sharp elbows or undersized ductwork) increases the total amount of static pressure in the system, the fan’s performance curve shifts, increasing the total brake horsepower required by the fan (up to the maximum point on the curve). Additionally, system designers may oversize a dust collection system to ensure adequate dust capture and transport, either to accommodate system expansion or simply to be conservative. Since theoretical fan energy use increases with its velocity cubed, this can be an expensive safety net. This paper presents a comprehensive literature review about industrial cyclone dust collectors energy saving in relation to management, technologies, and policies. Energy-saving technologies like high-efficiency motors (HEMs), variable-speed drives (VSDs), leak detection, and pressure drop reduction have all been examined. Based on energy saving technologies results, it has been found that in the industrial sectors, a sizeable amount of electric energy, and utility bill can be saved using these technologies. Finally, various energy-saving policies were reviewed.展开更多
This paper discusses the prospect of high efficiency motors based on usage in industrial sectors. In fact, energy consumption is globally classified into the industrial sector, transport system, residential and commer...This paper discusses the prospect of high efficiency motors based on usage in industrial sectors. In fact, energy consumption is globally classified into the industrial sector, transport system, residential and commercial building, agriculture and others sectors. In all the sectors, energy is eventually consumed by electrical appliances and equipments and the industrial sector accounts for the largest share of the overall energy consumption. The study concerns to identify the energy consumption using qualitative method. The main emphasis was given to comparison of the motor with high efficiency motors （HEMs） and traditional standard motors to investigate energy savings. According to the study, industrial sector has up to 25% of electrical energy conservation potential. Almost 70%-75% of the electrical energy consumption in industry is on account of use of electrical motors being used by pumps, fans, compressors and other motor driven system. Therefore, the potential for energy conservation through electric motors is quite high. Using high efficiency motors （HEMs） can thus reduce the losses and hence save vital energy costs. This paper will provide a contribution to electrical motors arena and will be a systematic knowledge base for researchers in this field.展开更多
Energy efficiency can be improved by reducing the amount of energy that we demand, and by changing our behaviors to reduce the amount of energy that we waste. This scheme manipulates the problem of incremental demand,...Energy efficiency can be improved by reducing the amount of energy that we demand, and by changing our behaviors to reduce the amount of energy that we waste. This scheme manipulates the problem of incremental demand, and low Power Factor （PF） for industrial plants, starting with walk through surveys, data analysis, providing advices to insure personnel involvement, and suggestions of practical circuits to attain the target. Elements of effective energy management program can be configured of management commitment, audit, analysis and implementation. Energy management opportunities can he operational and maintenance strategies, retrofit or modification strategies and new design strategies. The new technique of Power Factor Correction （PFC） that has been designed was the High Active Boost Power Factor Correction Pre-regulator Circuit, which was resulted in single / three phase PFC of about unity, in hand with a regulated output single phase voltage of about 220 VAC.展开更多
针对目前二次电池化成系统化成质量不高、节能效果不理想等缺点,提出了一种基于安时积分(Current Time Integration,CTI)和扩展卡尔曼滤波(Extend Kalman Filtering,EKF)融合算法的高效节能电池化成系统设计方案。系统采用STM32单片机...针对目前二次电池化成系统化成质量不高、节能效果不理想等缺点,提出了一种基于安时积分(Current Time Integration,CTI)和扩展卡尔曼滤波(Extend Kalman Filtering,EKF)融合算法的高效节能电池化成系统设计方案。系统采用STM32单片机为主控制器,运用改进卡尔曼滤波技术及PID算法,对电池SOC进行精准预测和充放电流电压的精确控制,同时采用高效AC/DC和DC/DC变换技术,有效提高电池化成质量和系统能量回收率。测试结果表明,采用PID算法电流控制误差不超过0.1%,系统相比目前带储能装置电池化成设备,其节能效率可以提高15.6%。展开更多
Regulators are important components in pneumatic system, and their flow-rate characteristics are the key parameters for designers. According to the correlatively international standard and national standard of China, ...Regulators are important components in pneumatic system, and their flow-rate characteristics are the key parameters for designers. According to the correlatively international standard and national standard of China, which describe the flow-rate characteristics measurement method of pneumatic regulators, the pressure and the flow are measured point by point, and then the flow-rate characteristics curve is plotted point to point. This method has some disadvantages, such as equipment complexity, much air consumption, and low efficiency. To settle the problems presented above, this paper puts forward a new high efficient and energy saving flow-rate characteristics measurement method of regulators, which is based on the pressure response when charging and discharging to an isothermal tank without any flow meters. The measurement principle, the system and the steps are introduced. And the tracking differentiator is used for the data processing of the pressure difference. Two typical kinds of regulators were experimentally investigated, and their flow-rate characteristics curves were obtained with the new and the conventional method, respectively. Comparatively, it＇s proved that this new method is feasible because it is not only able to meet the demand of the measurement precision, but also to save energy and improve efficiency. Compared to the conventional method, the new method takes only about 1/10 amount of time and consumes about only 1/30 amount of air. Hopefully it will be able to serve as an international standard of flow-rate characteristics measurement method of regulators.展开更多
文摘Dust collection systems represent a significant portion of a wood product manufacturer’s total electricity use. The system fan works against the static pressure of the entire system—the blast gates, the ductwork, and the upstream or downstream cyclone and/or baghouse. A poor system design (e.g., sharp elbows or undersized ductwork) increases the total amount of static pressure in the system, the fan’s performance curve shifts, increasing the total brake horsepower required by the fan (up to the maximum point on the curve). Additionally, system designers may oversize a dust collection system to ensure adequate dust capture and transport, either to accommodate system expansion or simply to be conservative. Since theoretical fan energy use increases with its velocity cubed, this can be an expensive safety net. This paper presents a comprehensive literature review about industrial cyclone dust collectors energy saving in relation to management, technologies, and policies. Energy-saving technologies like high-efficiency motors (HEMs), variable-speed drives (VSDs), leak detection, and pressure drop reduction have all been examined. Based on energy saving technologies results, it has been found that in the industrial sectors, a sizeable amount of electric energy, and utility bill can be saved using these technologies. Finally, various energy-saving policies were reviewed.
文摘This paper discusses the prospect of high efficiency motors based on usage in industrial sectors. In fact, energy consumption is globally classified into the industrial sector, transport system, residential and commercial building, agriculture and others sectors. In all the sectors, energy is eventually consumed by electrical appliances and equipments and the industrial sector accounts for the largest share of the overall energy consumption. The study concerns to identify the energy consumption using qualitative method. The main emphasis was given to comparison of the motor with high efficiency motors （HEMs） and traditional standard motors to investigate energy savings. According to the study, industrial sector has up to 25% of electrical energy conservation potential. Almost 70%-75% of the electrical energy consumption in industry is on account of use of electrical motors being used by pumps, fans, compressors and other motor driven system. Therefore, the potential for energy conservation through electric motors is quite high. Using high efficiency motors （HEMs） can thus reduce the losses and hence save vital energy costs. This paper will provide a contribution to electrical motors arena and will be a systematic knowledge base for researchers in this field.
文摘Energy efficiency can be improved by reducing the amount of energy that we demand, and by changing our behaviors to reduce the amount of energy that we waste. This scheme manipulates the problem of incremental demand, and low Power Factor （PF） for industrial plants, starting with walk through surveys, data analysis, providing advices to insure personnel involvement, and suggestions of practical circuits to attain the target. Elements of effective energy management program can be configured of management commitment, audit, analysis and implementation. Energy management opportunities can he operational and maintenance strategies, retrofit or modification strategies and new design strategies. The new technique of Power Factor Correction （PFC） that has been designed was the High Active Boost Power Factor Correction Pre-regulator Circuit, which was resulted in single / three phase PFC of about unity, in hand with a regulated output single phase voltage of about 220 VAC.
文摘针对目前二次电池化成系统化成质量不高、节能效果不理想等缺点,提出了一种基于安时积分(Current Time Integration,CTI)和扩展卡尔曼滤波(Extend Kalman Filtering,EKF)融合算法的高效节能电池化成系统设计方案。系统采用STM32单片机为主控制器,运用改进卡尔曼滤波技术及PID算法,对电池SOC进行精准预测和充放电流电压的精确控制,同时采用高效AC/DC和DC/DC变换技术,有效提高电池化成质量和系统能量回收率。测试结果表明,采用PID算法电流控制误差不超过0.1%,系统相比目前带储能装置电池化成设备,其节能效率可以提高15.6%。
文摘Regulators are important components in pneumatic system, and their flow-rate characteristics are the key parameters for designers. According to the correlatively international standard and national standard of China, which describe the flow-rate characteristics measurement method of pneumatic regulators, the pressure and the flow are measured point by point, and then the flow-rate characteristics curve is plotted point to point. This method has some disadvantages, such as equipment complexity, much air consumption, and low efficiency. To settle the problems presented above, this paper puts forward a new high efficient and energy saving flow-rate characteristics measurement method of regulators, which is based on the pressure response when charging and discharging to an isothermal tank without any flow meters. The measurement principle, the system and the steps are introduced. And the tracking differentiator is used for the data processing of the pressure difference. Two typical kinds of regulators were experimentally investigated, and their flow-rate characteristics curves were obtained with the new and the conventional method, respectively. Comparatively, it＇s proved that this new method is feasible because it is not only able to meet the demand of the measurement precision, but also to save energy and improve efficiency. Compared to the conventional method, the new method takes only about 1/10 amount of time and consumes about only 1/30 amount of air. Hopefully it will be able to serve as an international standard of flow-rate characteristics measurement method of regulators.
