Water-screw Design Electrical Control Unit Trinity

With the development of society, people’s demand on the quality of life is gettinghigher and higher, especially for indoor air quality, hot water supply is even more so.While the central air conditioning system is to provide high quality air and energy inbuildings in the main, is widely used in large buildings, Stars Hotel, enterprises,schools and other places, because people’s requirement to the system should not onlybe capable of reliable operation, but also request to achieve energy saving andenvironmental protection. Therefore, for those air conditioning system reformoutdated and energy feel is necessary, and the screw type water chiller is one of a hostof central air conditioning, with other units of incomparable advantages, is currentlythe most widely used unit.The control unit of the existing screw type three-in-one control system is used,PLC and touch screen development of convenient, reliable operation, widely used invarious occasions, this paper takes Guangzhou a four star Le Grand Large Hotelthermal transformation as a case, according to the energy needs of the hotel, make fulluse of waste heat of wine shop itself, an upgrade of the system, control systemindependent development of the water screw unit based on electrical control, thedesign and installation of the whole energy saving engineering, which has theadvantages of high reliability, easy maintenance features.In this paper, combining with the practice of reconstruction engineering, aroundthe control screw unit carried out a full range of expansion, the core is system controlis the. First of all, through the renovation project of hotel are reviewed, emphaticallyon the technical feasibility, economic, load matching schemes are analyzed andcompared; and then analyzes the selection of the system design and the screw unitwas described, including the design and transformation of system engineering screwunit control, compressor control, hot water and air conditioning conversion and hotwater pump control requirements in detail; then combined with unit control of themain circuit and control circuit of periphery of project selection and parameter designand equipment introduction; followed by the controller part of the series Cheng Silu and programming are briefly explained, finally combed design informationengineering includes a list of equipment, specifications etc., at the same time to theproject summary and outlook. The whole thesis written entirely in accordance withthe implementation steps of the engineering practice of enterpri to.