Scope of Application The refrigeration station control system is mainly used in centralized cold and heat source systems such as large-scale building air conditioning and refrigeration systems, process refrigeration systems, and process heat and cold exchange systems, it can realize automatic control of the number of chillers in operation, as well as linkage control and interlocking control of equipment such as chilled water pumps, cooling water pumps, and cooling towers, to achieve the goal of unmanned automatic operation and efficient energy-saving operation of the refrigeration station. Product Technical Features 1. Rich field experience and rigorous software strategy, which can display the sequential start and stop and linkage control between various power equipment and electric valves in the refrigeration station system, and can also realize group control of equipment with one click, combined with many years of experience in chilled water supply and return water pressure difference and temperature difference control functions, etc. 2. On-site operation adopts touch screen + button control, multiple controls to ensure stable operation of the system, the touch screen interface is friendly and easy to operate, which can realize dynamic display of refrigeration station equipment, alarm records, historical data query and review, and has historical trend curves and other functions. 3. Balanced wear operation mechanism: Comprehensively consider the cumulative running time and number of starts of the equipment, adopt the strategy of first-in-first-out and short running time first, to ensure the most ideal balanced wear control. 4. According to the parameters such as the temperature difference, pressure difference and cold water flow of cold water supply and return water, the frequency of the cold water pump is intelligently adjusted, and energy-saving operation is achieved under the premise of ensuring the pressure difference and flow. 5. Intelligent control of cooling tower group is adopted to avoid the phenomenon of mixed air and water between tower groups, make full use of the cooling area of cooling towers, correct the fan output of each tower, balance the cooling effect of each tower, and improve the cooling efficiency of tower group. 6. According to the COP efficiency curve of the chiller, the output and number of units are reasonably controlled to ensure that the chiller operates in the optimal range. 7. The standard MODBUS RTU protocol is adopted, and the network communication interface that supports the international mainstream communication protocol is reserved to achieve connection with the building system. ● Chilled water supply pressure difference and temperature difference control. ● Cooling water return constant temperature difference control. ● Optimized COP operation curve of chilled water main unit, chilled water main unit group control. ● Group control of pump group, chilled water main unit and cooling tower fan. ● One-button start and stop function, equipment interlocking control. ● Various electric valve status monitoring, remote interlocking control. ● Automatic switching of equipment failure to standby function, balanced rotation control. ● System failure emergency stop function, shutdown operation according to process. ● Equipment operation time accumulation and maintenance reminder function. ● Feedback of chilled water main unit operation parameters, including compressor current, oil pressure and other parameters. ● Feedback of pump group operation status, manual automatic switching control. ● Feedback of cooling tower fan operation status, manual automatic switching control. ● Pressure, temperature and flow monitoring of water system supply and return main pipe, flow and pressure monitoring of the most unfavorable point. ● Automatic control of medium-temperature water plate exchange system, primary and secondary side water temperature, pressure and flow monitoring. ● System hardware failure self-diagnosis function.
