肥料自動包裝機袋進給部裝設計【優(yōu)秀畢業(yè)設計】【6張CAD圖紙+說明書】

購買設計請充值后下載，資源目錄下的文件所見即所得，都可以點開預覽，資料完整，充值下載可得到資源目錄里的所有文件?！咀ⅰ浚篸wg后綴為CAD圖紙，doc,docx為WORD文檔，原稿無水印，可編輯。具體請見文件預覽，有不明白之處，可咨詢QQ:12401814 ECONO-PILOT”ENERGY-SAVING SYSTEM FOR WATER PUMPSWe have developed the “Econo-Pilot” energy-saving system for water pumps, which reduces the power consumption of motors for water supply. In the energy-saving control field, the conventional method used is that of constant pressure control of the water supply with inverters. However, as Econo-Pilot employs a method of variable water pressure control corresponding to flow volume, the system can raise the energy-saving ratio up to 90 percent. This paper describes the principles of the system and its basic functions, along with a case study of some practical applications.INTRODUCTIONWith the background of fulfilling public commitments for the prevention of global warning, many countries have consolidated related laws and regulations aiming to reduce energy consumption. Energy conservation has become one of the important issues for companies and organizations accredited with the ISO 14000 series standards certification because they are required to achieve yearly targets for improvements, which have, in a sense, the same implications as laws. In a prolonged recession, investments in energy-saving activities directly linked with cost reduction have attracted increasing attention.However, large-scale renewal investments which entail enormous costs cannot be implemented easily. Consequently, there have been increasing needs for energy conservation activities which bring about substantial cost reduction effects but can be conducted inexpensively with ease and minimum risks, while at the same time utilizing existing facilities.Figure 1 is a graphical indication of the energy consumption ratios of office buildings, which is based on research conducted by the Building-Energy Managers Association of Japan. As indicated in the graph, air conditioning-related items account for half of the total consumption. This means that air conditioning must be the main target for energy conservation.Figure 1 Energy Consumption of Office Buildings by UsageAmong air conditioning-related technologies, we have focused on the control of air conditioning pumps and have developed a new energy-saving control system called Econo-Pilot which meets the requirements for implementations mentioned earlier system.The Econo-Pilot adopts a new control mechanism contrived by three enterprises-Yokogawa Electric Corporation, Asahi Kogyosha Co, Ltd., and The First Energy Service Company, Limited-and was commercialized by Yokogawa after the development and demonstration phases, through joint research with the New Energy and Industrial Technical Development Organization (NEDO).OVERVIEW OF AN AIR CONDITIONING SYSTEMFigure 2 shows an overview of an air conditioning system. Broadly speaking, energy is consumed by heat sources, water pumps, and ventilators.FIgure 2 Overview of an Air Conditioning System A heat source generates cold/hot water through gas combustion in the case of applying a gas-based cold/hot water generator, the cold/hot water is then conveyed to air conditioners by water pumps. Inside air conditioner, the cold/hot water is flowing through heat exchange equipment where air is warned up or cooled when passing through the heat exchange equipment via ventilators- and then the warned/cooled air is blown to an area through ducts.Water pumps are mainly classified into primary pumps, secondary pumps, and cooling pumps, but their power consumption is almost the same. Among them, we have focused on secondary water pumps whose flow volume varies significantly according to demand.