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Hotel function room ventilation—heat recovery with C[O.sub.2] monitoring and VAV control
To summarize the data in this months report (Figures 1 and 2), April was a fairly mild month for much of the country and actually a little on the...
Engineered Systems, 06/01/05 by Michael Kjelgaard · More from publication -
The commissioning process
Before we get started on this month's topic, all heating indicators (Figures 1 and 2) show that March was much colder than the previous two years...
Engineered Systems, 05/01/05 by Michael Kjelgaard · More from publication -
Fun with bin data conventional data online sources
Many of the calculations, methods, and tools discussed in this column are based on the use of bin data. Bin data is available in a number of...
Engineered Systems, 04/01/05 by Michael Kjelgaard · More from publication -
Heat recovery systems and the 'three-year payback'—normal hourly data vs. actual observations
Now that we have three full years under our belt, I thought it would be interesting to see if the three-year heat recovery, payback we all talked...
Engineered Systems, 03/01/05 by Michael Kjelgaard · More from publication -
Analyzing the 2004 weather impact
Before we get started, I am still receiving data requests and requests for copies of spreadsheets that have been developed in previous columns. I...
Engineered Systems, 02/01/05 by Michael Kjelgaard · More from publication -
Runaround 'rat race' heat recovery coils—minimizing costs and maximizing savings
Before we get into the above topic, I am pleased to announce that ClimateQuest.com has achieved a level of sponsorship sufficient enough to keep...
Engineered Systems, 01/01/05 by Michael Kjelgaard · More from publication -
Calculating economizer savings … continued
In last month's column, we introduced a simple but reliable spreadsheet (which can be downloaded from the reference / tools page at...
Engineered Systems, 12/01/04 by Michael Kjelgaard · More from publication -
Calculate economizer savings with confidence in minutes with the economizer analyzer
The next software tool in line for us to evaluate is the economizer analyzer--a spreadsheet that quickly and accurately calculates air and...
Engineered Systems, 11/01/04 by Michael Kjelgaard · More from publication -
Analyzing the 'total' impact of weather on utility costs
With August behind us, we can now look back at the 2004 summer and officially ask, "Where's the beef?" The data in Figures 1 and 2 indicate that...
Engineered Systems, 10/01/04 by Michael Kjelgaard · More from publication -
Voila! Your ventilation load analyzer is ready to go
Well, July has come and gone and most of us are still waiting for that long stretch of hot, humid weather that really puts our cooling equipment...
Engineered Systems, 09/01/04 by Michael Kjelgaard · More from publication
