Generator Set Sizing: Optimizing Sizing With SpecSizer

by Visitor bakersj on ‎10-22-2014 12:29 PM

Steve Baker Banner.jpg

We conducted the SpecSizer 101 Basics training webinar in late September to help users get more familiar with the Tool’s load analysis, load step optimization, generator set selection, reporting and user support. We appreciated the positive feedback we received and the participants’ engagement, and we were able to provide best practices for users to better understand all the features and options in SpecSizer to manage their genset sizing requirements.  For example, many webinar participants’ questions indicated a knowledge gap understanding transient response requirements and the relationship to genset sizing, so we provided guidance on that relationship in order to alleviate the uncertainties.

 

As a follow up to the SpecSizer 101 Basics introductory course, we’re looking forward to sharing a more comprehensive review of the Tool  with SpecSizer 201 Intermediate training. This presentation will cover tips and tool features/options to optimize your generator set selection, in order to size a more competitive, cost effective genset for your site application. The discussion will also include a brief discussion of nonlinear loads’ harmonics and distortion and how we mitigate the effects on the genset sizing with SpecSizer.  We’ll also review the SpecSizer page locations and process to view and utilize technical data imported daily into the Tool that helps you understand your genset selection, or provides you the technical information you need to make informed decisions on alternative genset selections for your spec and site application.

 

 

As the SpecSizer Manager, I’ve had the opportunity to collaborate with thousands of SpecSizer users over the last decade, providing training, and also helping our valued customers optimize their genset recommendation. No one knows more than I do the benefit to you of knowing and proficiently utilizing our genset sizing tool.  At times, what seems a minor change to your site or load specification can significantly alter your genset recommendation.  One common opportunity to optimize the effect of your motor loads’ starting demand, and sized genset, is the selection of Reduced Voltage Starters. We’ll cover this topic in SpecSizer 201 Intermediate training, and many others, to provide you a better understanding of the influences of optimization options you choose on your genset selection.

 

 

A primary advantage of reducing your sized genset is lower capital costs, but there are also other associated savings. These include lower installation costs, structural costs (including space and foundation), shipping costs and operational costs, as well as lower genset maintenance costs. For example, an oversized genset operated at lightly loaded capacity can be prone to wetstacking, which is sometimes referred to as “slobber” due to leakage from the exhaust manifold joints.

 

We talked about optimizing load step sequencing with SpecSizer 101 Basics, and it makes for compelling logic. Even so, SpecSizer doesn’t force an optimized genset selection, but always calculates it along with a genset selection based upon your user-defined loads and load step sequencing.  Some installations have a fixed specification for load sequencing, or motor starting, or utilization of equipment to reduce harmonics, etc. which can be a result of emergency procedures, plant operation processes, hierarchy of business needs, or (hopefully not) because processes and equipment have not been updated. To learn more about many optimization opportunities possible when sizing generator sets with SpecSizer, we invite you to join our next webinar training session.

 

Invitations for the SpecSizer 201 Intermediate training webinar, which is scheduled for October 30th, have been emailed to all registered SpecSizer users.  If you are already part of the SpecSizer community, we look forward to your participation.

 

If you haven’t received an invitation and would like to attend, please register for SpecSizer access and we will forward an invitation.  If you have any other questions or generator set sizing inquiries, feel free to email us at specsizersupport@cat.com or you can contact me directly by leaving a comment below.

 

  • What features or options do you find most useful in a genset sizing tool? What do you consider most useful to you with/when using SpecSizer?
  • Have you used SpecSizer’s Optimizer? How has it applied to your site specifications? Were you able to utilize the reduced genset recommendation, or are you more frequently tied to a load step sequencing required by spec?
  • Are there any features, options or capabilities you require when sizing your genset that SpecSizer currently does not provide? If we provided that capability, would you more often consider Caterpillar as your provider of choice for your purchased genset(s)?

Comments
by Paulo Roberto Pereira
on ‎10-27-2014 05:00 PM

Boa Noite, Como purificar o gaz de chorume de porcos, em Biogaz.

by Visitor bakersj
on ‎11-10-2014 04:28 PM

Paulo, please email us at specsizersupport@cat.com to provide you contact information for your local Cat dealer for biogas application assistance.

by Josue
on ‎11-23-2014 09:57 AM

bakersj wrote:

Steve Baker Banner.jpg

We conducted the SpecSizer 101 Basics training webinar in late September to help users get more familiar with the Tool’s load analysis, load step optimization, generator set selection, reporting and user support. We appreciated the positive feedback we received and the participants’ engagement, and we were able to provide best practices for users to better understand all the features and options in SpecSizer to manage their genset sizing requirements.  For example, many webinar participants’ questions indicated a knowledge gap understanding transient response requirements and the relationship to genset sizing, so we provided guidance on that relationship in order to alleviate the uncertainties.

 

As a follow up to the SpecSizer 101 Basics introductory course, we’re looking forward to sharing a more comprehensive review of the Tool  with SpecSizer 201 Intermediate training. This presentation will cover tips and tool features/options to optimize your generator set selection, in order to size a more competitive, cost effective genset for your site application. The discussion will also include a brief discussion of nonlinear loads’ harmonics and distortion and how we mitigate the effects on the genset sizing with SpecSizer.  We’ll also review the SpecSizer page locations and process to view and utilize technical data imported daily into the Tool that helps you understand your genset selection, or provides you the technical information you need to make informed decisions on alternative genset selections for your spec and site application.

 

 

As the SpecSizer Manager, I’ve had the opportunity to collaborate with thousands of SpecSizer users over the last decade, providing training, and also helping our valued customers optimize their genset recommendation. No one knows more than I do the benefit to you of knowing and proficiently utilizing our genset sizing tool.  At times, what seems a minor change to your site or load specification can significantly alter your genset recommendation.  One common opportunity to optimize the effect of your motor loads’ starting demand, and sized genset, is the selection of Reduced Voltage Starters. We’ll cover this topic in SpecSizer 201 Intermediate training, and many others, to provide you a better understanding of the influences of optimization options you choose on your genset selection.

 

 

A primary advantage of reducing your sized genset is lower capital costs, but there are also other associated savings. These include lower installation costs, structural costs (including space and foundation), shipping costs and operational costs, as well as lower genset maintenance costs. For example, an oversized genset operated at lightly loaded capacity can be prone to wetstacking, which is sometimes referred to as “slobber” due to leakage from the exhaust manifold joints.

 

We talked about optimizing load step sequencing with SpecSizer 101 Basics, and it makes for compelling logic. Even so, SpecSizer doesn’t force an optimized genset selection, but always calculates it along with a genset selection based upon your user-defined loads and load step sequencing.  Some installations have a fixed specification for load sequencing, or motor starting, or utilization of equipment to reduce harmonics, etc. which can be a result of emergency procedures, plant operation processes, hierarchy of business needs, or (hopefully not) because processes and equipment have not been updated. To learn more about many optimization opportunities possible when sizing generator sets with SpecSizer, we invite you to join our next webinar training session.

 

Invitations for the SpecSizer 201 Intermediate training webinar, which is scheduled for October 30th, have been emailed to all registered SpecSizer users.  If you are already part of the SpecSizer community, we look forward to your participation.

 

If you haven’t received an invitation and would like to attend, please register for SpecSizer access and we will forward an invitation.  If you have any other questions or generator set sizing inquiries, feel free to email us at specsizersupport@cat.com or you can contact me directly by leaving a comment below.

 

  • What features or options do you find most useful in a genset sizing tool? What do you consider most useful to you with/when using SpecSizer?
  • Have you used SpecSizer’s Optimizer? How has it applied to your site specifications? Were you able to utilize the reduced genset recommendation, or are you more frequently tied to a load step sequencing required by spec?
  • Are there any features, options or capabilities you require when sizing your genset that SpecSizer currently does not provide? If we provided that capability, would you more often consider Caterpillar as your provider of choice for your purchased genset(s)?

 

by Zuhair Kharoufa
on ‎06-25-2015 12:31 PM

Dear Mr. Baker,

 

We need assistance in specifying a generator set for a remote location, a data collection center is to be installed in hot environment with a maximum temperature of 53deg C, and the site will have:

- Electronics ~9KVA

- HVAC 36KBTU (7KVA)

- Six blowers for (4 x 10HP+7.5HP+5HP) for a total of 52.5 HP , the blowers are not running continuously, the blowers will turn on 10 - 20 times a day for approximately 10 minutes each time, we can stagger the blower turn on time for all six blower to start within 2.2sec (380msec turn on delay per blower), prime and stand-by set with synchronization and remote control features is required,  steady state power with all blowers running and  including the electronics is ~70KVA, blower inrush current is dependent on the blowers voltages ( blowers are not selected yet), what would you suggest for this application.

 

Many Thanks

Zuhaor Kharoufa

631-549-422 x132

by New member jeojohn
on ‎01-14-2017 02:54 AM

I think your post is very interesting and mostly.As a staff of lubricants suppliers in UAE , i keep looking for like this type of websites where i learn or get new concept. I am happy to visit on your site. Thanks to share it.

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