2007 Second Quarter Index

2007 Second Quarter Blog Post Index

Field
Lessons in HVAC Physics, Physiology, and Psychology

05/31/07
This was my first post where I discuss my plans for the blog and
how there is more to working in the field than physics.

Damper
Tests Provide Valuable Insights. Seriously–I’m not kidding. Part
1

06/03/07
In this post, I started to look at the results of a test I did with
one of the lab classes I teach. Specifically, we targeted the
economizer dampers on an air handling unit and planned a test that
would help us assess their performance. This article looks at the
theory we based our test planning on.

Damper
Tests Provide Valuable Insights. Seriously–I’m not kidding. Part
2

06/09/07
This post continues the damper testing discussion and looks at the
scoping techniques the class used to target the dampers for testing
in the first place.

Damper
Tests Provide Valuable Insights, Part 3

06/10/07
This post continued the damper test discussion by taking a more
in-depth look relationship between damper performance and its
impact on economizer controllability and minimum outdoor air flow
control.

Damper
Tests Provide Valuable Insights, Part 4

06/21/07
This post picks up where the previous post left off and looks at
how damper performance impacts mixing. It also looks at the
importance of blade seals both in mild and severe climates.

Damper
Tests Provide Valuable Insights, Part 5

06/23/07
This post returns to the original focus of the string; the damper
test. Specifically, it looks at some of the testing that had
occurred previously where a different class had tested the
economizer change-over sequence and the minimum outdoor air flow
regulation. The previous tests provided a good background for the
test the current class was about to perform. In addition, the
results of the earlier tests provide some valuable insights into
real-world economizer operating issues.

Damper
Tests Provide Valuable Insights, Part 6
06/25/07 
This post takes a look at the techniques that were used by one of
the teams in the class to assess minimum outdoor air requirements
for the facility where the AHU they were testing was located
including ventilation requirements, make up air requirements, and
pressurization air requirements.

Damper Tests Provide Valuable Insights, Part
7A
and Part
7B

06/29/07
These posts complete the string on damper performance testing by
looking at the details of the test procedure the class used and
presenting the results of their test, which were surprising because
they did not totally match what theory would predict.

 Senior Engineer – Facility Dynamics
Engineering

Click
here for an index to previous posts

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