Björn Eldvall 01.10.2019 ESS P&ID.

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Presentation transcript:

Björn Eldvall 01.10.2019 ESS P&ID

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Bort, CWH 03.04.2017

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Start-up procedure 03.04.2017

Compressed air Extent: Water cooled compressors, VSD, 50%, (2*1500 Nm3/h) ND dryer, VSD, (Dp -40 C) After cooler Compressed air vessel, 4 m3 -Heat recovery system, connected to CWM, CWH -Emergency cooling system -Connection point external compressor So, I was asked to talk about the compressed air equipment that we plan to install in the CUB. The air demand at ESS is aspected to be 3000 Nm3/h, and in the original scope we were aspected to deliver that and also equipment for redundancy based upon failure of biggest machine. But since the need for compressed air came earlier than aspected ESS has alraedy installed some air compressors that replaces the need for redundancy equipment. The main components in the compressed air solution are the…. Variable speed controlled & Water cooled compressor After coolers ND dryers Air vessel The Facility is connected to a heat recovery system that provide cooling to the equipment but also recover the surplus heat to both the CWM & CWH curcuit There´s also an emergency cooling system and a possibility to connect an external compressor if needed

Compressed air solution 4 m3 Air vessel to reduce pressure fluctuations and demand changes compressors with 50% capacity each, 1500 Nm3/min Prepared for uninterrupted expansion Heat recovery, both circuits ND dryers Connection of external compressors Emergency cooling Here´s the flowchart that shows our design wich are based up on the ESS specifications. We have chosen to design the compressed air system with two compressors that have 50% capacity each. There are also one compressed air facility in the other end of the compressed air grid owned by ESS, with a capacity of a bit more than 50%, that functions as a redundancy in case of failure. Both of our compressors are speed regulated and the plant is pressure controlled, based on a reference sensor located in the worst point of the grid. In order to meet the dewpoint requirement, each compressor has an ND dryer, which differs slightly from the more traditional MD dryer through an extra cooling stage. By using the ND dryer it allows us to optimize energy usage and also reach the tough dewpoint of -40 degrees. The speed ​​control in combination with the accumulation in the grid and management system, we will be able to keep the pressure requirement, but as an extra security, due to that the outlet pattern is not fully known, we have also chosen to install a 4m3 accumulation. Most of the energy supplied to the facility are converted into high-quality heat which allows us to recovery surplus heat and also provide urgent cooling for the compressors. The heat recovery system are connected to both CWM and CWH cooling circuits, where we recycle as much as possible into the high-temperature circuit and the remaining heat is taken care of and recycled in the CWM curicuit. By using both circuits it also gives us higher reliability, but if, for some reason, the cooling curcuits failures and we need to cool off the compressors anyway we are considering to install a completely independent emergency cooling equipment connected to the cold water that automatically starts.   There´s always a compressor as a permanent backup, and if for some reason it is necessary to have additional capacity, the system is prepared to connect a rental compressor, and, in the event of a major brake down, we can section off all or part of existing compressors. The supplier we´ve been talking to has a well-developed rental store both in Copenhagen and Gothenburg where these sizes of compressors are usually available and can be installed and operated within 24 hours. The plant is also prepared for further expansion during operation through the possibility of connecting to the valve-mounted expansion hub. This allows us to take a new compressor in operation without affecting the availability. The entire plant including the ESS compressors, is also equipped with a control system adapted for compressed air and that are fully communicable both down and upstream, for making it easy to monitor and easy to optimize.

E.ON Control system architecture in Malmö Why control system ABB 800xA E.ON Control system architecture in Malmö ABB 800xA Operator Workplace Business systems Client/server network server GPS clocksync Primary server Secondary server 800xA Historian Control Network AC800M I/O Cabinet AC900F AC800M SHP SPK ESS H01 Other sites

H01 will be controlled and monitored from Heleneholmsverket in Malmö Why control system ABB 800xA H01 will be controlled and monitored from Heleneholmsverket in Malmö

Time for discussion Time for discusion? 03.04.2017