National Stadium (“ nest ”) 29 2008 Olympic Games main stadium, underground 3 floors, ground floor 7, the National Stadium ground source heat pump central air conditioning project design of large cooling load for the 14533kw, using ground source heat pump and combination in the form of ice storage. Nest of Ground Source Heat Pump with Dayton Han Bushi with Yantai Moon and refrigeration equipment and systems, electrical control mainly uses
Schneider s Micro and Twido PLC, and XBTGT touch screen. “ nest ” ground source heat pump central air conditioning system consists of large-scale ground source heat pump room control system and two full closure screw ground source heat pump. 2.0; mso-para-margin-bottom: 1.0gd "> Ground Source Heat Pump Series PLC TWDLCAA40DRF and use Twido extension modules, which itself brought a communication port and XBTGT touch screen is connected. Can source heat pump from the engine room control system for a given signal on / off and adjust the energy, control procedures, according to the load change and rate of change of control upload unloading slide valve, stepless adjustment of refrigeration energy, minimize device energy consumption. compressors can be set through the user interface working methods and operating parameters, check the compressor s operating conditions, view the machine failure and so on. every one PLC Kuozhan a communication port, MODBUS from the station to do, even in the MODBUS bus, implementation and source heat pump room control system PLC communications. Source heat pump room control system PLC Selection ont-size: 10.5pt "> MICRO Series PLC TSX3721001. MICRO series PLC communication is very powerful, supporting MODBUS, UN-TELWAY, Ethernet TCP / IP and other communication protocols. control system to complete the cycle of water cooling system and the corresponding system control, such as cooling / heating mode switch, water supply and return water to the refrigerant temperature and pressure, cooling water supply and return water temperature and pressure, cooling water pump, coolant pumps and other monitoring, system expansion a TSXSCP114 Communications PLC card, so MODBUS Master, MODBUS network and Twido PLC via communications, automatic control system for ground source heat pump two open stop, so that energy efficient air conditioning systems operate according to the procedure. "Style =" mso-bidi-font-size: 10.5pt "> MICRO PLC TSX3721 itself with two communication ports, including a communications port and touch screen connected to a communication port and another Ethernet module TSXETZ410
Schneider connected. TSXETZ410 module in this play the role of a bridge, one end of the PLC to exchange data through the system, the other side through the TCP / IP Ethernet connection to the nest building intelligent systems, intelligent systems from nest building to monitor the ground-source heat pump central air-conditioning system operating conditions. Ground source heat pump room control system PLC control unit for the Micro series, configured as: CPU: TSX3721101 2 ???? TSXAEZ801 2 ???? TSXDMZ28DR TSXDEZ32D2 TSXSCP114 ; Mso-bidi-font-size: 10.5pt "> Communication Card Ethernet module TSXETZ410. Ground source heat pump cold water cooling design temperature conditions of 5 / 13 degrees, hot water heating design conditions for the return water temperature of 55/50 degrees. Underground heat source part of the design supply and return water temperature in winter is 5-2 degrees, 27/32 degrees in summer. Each compressor refrigeration unit includes two compressors, a total of a refrigeration circuit, the core of the Twido PLC control, through digital modules and analog sensor signal acquisition module can be realized automatically according to load status of energy regulation. Configure: TWDLCAA40DRF TWDDRA8RT 6 ???? TWDAMI2HT TWDNAC485D touch screen XBTGT2110. cm 15.6pt; text-indent: 21pt; mso-char-indent-count: 2.0; mso-para-margin-bottom: 1.0gd "> ground source heat pump and other energy-saving technologies and equipment environmental protection, in the successful application of the Olympic venues, closely “ Green Olympics ”, “ tech Olympics ” the theme, will promote in all fields to fully promote the use of. at the National Stadium ground source heat pump large central air conditioning system, use the
Schneider and Twido Micro PLC and XBTGT sequence touch screen, in addition to achieve the process control, network communications to achieve a flexible and convenient to have an open network such as the remote is a big bright spot, improving overall system performance and reduce operation and maintenance costs.