- #TWO STAGE COMPRESSOR SYSTEM PRO II SIMULATION DRIVER#
- #TWO STAGE COMPRESSOR SYSTEM PRO II SIMULATION FULL#
- #TWO STAGE COMPRESSOR SYSTEM PRO II SIMULATION SOFTWARE#
- #TWO STAGE COMPRESSOR SYSTEM PRO II SIMULATION SERIES#
Black box technology was proprietary with their own coding languages and often experienced compatibility issues when interfacing between different manufacturers’ s/models.
#TWO STAGE COMPRESSOR SYSTEM PRO II SIMULATION SOFTWARE#
Black boxes though addressed response times, suffered from frequent hardware and software revisions. This led to the rise of specialized control equipment known as ‘ Black Boxes’ that was the alternate to panel mounted instruments. To respond quickly to any process upsets, high computational speeds in controllers also became a necessity. With a steady rise in oil consumption since the 1970s, the necessity of energy efficiency, safety, and environmental friendliness became a priority and demanded better control systems. However, with advances in technology, these timings can be considered at ~100 milliseconds.Īlthough the good old Proportional-Integral-Derivative (PID) control was enough to avoid a compressor surge by minimizing the compressor recycle flow, it did not aid much in reducing/optimizing the power requirements.
#TWO STAGE COMPRESSOR SYSTEM PRO II SIMULATION DRIVER#
During an ESD scenario (e.g., power loss), taking a conservative approach for design purposes, the control output signal from the compressor driver after a trip, takes ~300 milliseconds to reach the Distributed Control System (DCS) and another ~300 milliseconds from the DCS to reach the HGV to open. The hot gas piping should also be laid as short as possible between the discharge line and the suction line to have a fast response. In the case of an electric motor-driven compressor, the power source for the motor-operated HGV must be independent lest during a power failure the motor-operated HGV becomes futile. For larger On-Off Valves (above 16”), the time is taken to be < 2 sec.
#TWO STAGE COMPRESSOR SYSTEM PRO II SIMULATION FULL#
A hot gas recycle/bypass system consists of piping with an On-Off Valve that is motor operated and can have a full opening time of < 1 sec (for valves between 4” to 16”). The Hot gas recycles valve is always to be used in tandem with the ASV and only during an emergency shutdown (ESD). Excessive hot gas recycle also shortens the efficacy of the lube oil that is used for lubrication purposes. In recent decades, with tools such as dynamic simulation, the quantity of hot gas to be recycled can be determined without recycling immoderate amounts of hot gas that can overheat the gas compressor with bearings and seals failing.
![two stage compressor system pro ii simulation two stage compressor system pro ii simulation](https://ars.els-cdn.com/content/image/1-s2.0-S0888327007001501-gr1.jpg)
The second image below shows a gas compressor with a hot gas recycle and whose operating point moved away from the compressor surge line during an emergency shutdown. When such solutions still fail to stop a compressor surge event from occurring, a hot gas recycles (a.k.a HGV) is used as a last resort. In these situations, a necessity arises to recycle more flow for which an additional ASV with quick opening characteristics is installed in parallel to the first ASV.
#TWO STAGE COMPRESSOR SYSTEM PRO II SIMULATION SERIES#
![two stage compressor system pro ii simulation two stage compressor system pro ii simulation](https://d20ohkaloyme4g.cloudfront.net/img/document_thumbnails/4cdd9c4a98188c5032753fd603736785/thumb_1200_1697.png)
The consequences of a compressor surge are more mechanical in nature whereby ball bearings, seals, thrust bearing, collar shafts, impellers, etc wear out and sometimes depending on how powerful are the compressor surge forces, cause fractures to the machinery parts due to excessive vibrations. Consequences of Centrifugal Compressor Surge Very high rotation speed and insufficient flow.Restrictions in the inlet and outlet of the system.Misdistribution of load in the compressor.