2010 First Quarter Index

Clicking on the  hyperlink tied to the date for each post description should take you to that post.

Assessing Steam Consumption with an Alarm Clock: Step 1 – Working with the raw data and Excel time values
January 23, 2010

This post begins to walk you through the steps necessary to use the condensate pump cycle based steam load assessment technique I discuss in December of 2009.  It explores the things that you might have to do to the raw data to get it in a workable format and includes a discussion on how Excel handles time values with a serial number and a link to a spreadsheet I shared that helps with the conversion process.

Assessing Steam Consumption with an Alarm Clock: Step 2 – Detecting a Pump Cycle
January 26, 2010

This post continues the discussion started in the previous post by looking at how to convert the logged analog current data associated with condensate pump operation into a simple indication of whether or not the pump was running by using Excel features and functions like “Sort”, “If” and nested “If” statements.

Twin City Fan and Blower Company Fan Selection Software
January 27, 2010

This post highlights the  free fan selection software from the Twin City Blower and Fan Company as well as a little trick I learned for finding curves for fans that they no longer manufacture.

My Home-made Indexing System
January 27, 2010

This describes how the indexing system I’m making for my blog posts works and may be how you got to this particular post.

2010 First Quarter Index
January 27, 2010

This is the very post you are reading right now.

Assessing Steam Consumption with an Alarm Clock: Step 3 – Counting Cycles
January 28, 2010 

This post continues the discussion on how to use spreadsheet techniques to convert logged current from a condensate pump into steam consumption and a steam system load profile by looking at how to make a cycle counter and some of the issues you need to think about when working with the data to count cycles.

2009 4th Quarter Index
January 28, 2010

This provides an index with links to the blog posts that went up in the last quarter of 2009.

A Great Article Contrasting Chilled Water Cooling Technologies, their Efficiencies, and their Emissions and Some Thoughts on Climate Change
February 3, 2010

In this post, I point you to a really well written article contrasting different chilled water cooling technologies in terms of emissions and efficiency.  I also share some of my own thoughts about climate change.

More Thoughts on Global Warming
February 3, 2010

When I went to link to the article in the previous post, I found a comment which really got me to thinking about climate change, efficiency, and our roles as engineers and humans relative to those things.  I share my thoughts here for what they are worth.

David Sellers
Senior Engineer – Facility Dynamics Engineering

Click here for an index to previous posts

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