please find the attached snapshot below, there is 5.5% site derated value mentioned in the bracket, why some compressor vendor considering in the calculation. if anyone explain , shower his knowledge will be appreciated.
The Waukesha brochure indicates a gross power at 5000bhp at 100degF at up to 3000ft altitude, so no derate for temp or altitude for your case (65ft / 104degF) -see also table on page 4 of brochure
Would suspect this 5.5% derate on 5000bhp to get to 4725bhp is to account for power to run auxiliaries attached to the gas engine - confirm with Waukesha.
If that 275 hp loss is intended for auxiliaries, then the Ariel Performance file isn't configured properly. When the HP is shown like that, someone has entered a % derate for the engine - typically based on site conditions (e.g. elevation as mentioned), but could be anything else that affects engine performance without specifically being an external power draw. Perhaps fuel gas quality?
If it was entered as auxiliary power draw, it would look like this on the performance sheet:
This is what the engine configuration power section looks like in Ariel Performance software.
Red Flag Submitted
Thank you for helping keep Eng-Tips Forums free from inappropriate posts. The Eng-Tips staff will check this out and take appropriate action.
Reply To This Thread
Posting in the Eng-Tips forums is a member-only feature.
Different types of metrology have different critical specifications to consider when determining which actuator technology to use. This white paper goes into detail on the demands of dynamic metrology applications as they apply to the selection of precision linear motion control components and systems. In addition, the relevance of Moore's Law is examined in the context of the industry. Download Now
Commonly used welded piping connections come with skilled labor, validation, inspection, and long commissioning times, as well as the workplace hazards associated with welding. Non-welded permanent mechanically attached fittings offer a viable alternative to welded piping systems that greatly reduces the time to commission piping systems through reductions in many of the time-consuming steps required in welding. Download Now
The introduction of digital ecosystems connecting electronic control hardware and software to the Cloud is catalyzing a new era of mobile machine and equipment design innovation. This is enabling OEMs across industries to develop customized solutions that digitally integrate hydraulic and machine controls with the Internet of Things (IoT). Download Now
What’s driving the evolving landscape of truck electrification? What are the barriers, motivators and strategies for accelerating the electric transition? What insights and resources are available for today’s design engineers working to achieve industry disruption and evolution? For answers to these and other pertinent questions, read this white paper.
Download Now
Talk To Other Members
RE: compressor driver rated power calc
http://www.gaselectricpartnership.com/L%20Waukesha...
Would suspect this 5.5% derate on 5000bhp to get to 4725bhp is to account for power to run auxiliaries attached to the gas engine - confirm with Waukesha.
RE: compressor driver rated power calc
If it was entered as auxiliary power draw, it would look like this on the performance sheet:
This is what the engine configuration power section looks like in Ariel Performance software.