Lester Shen
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  • Minneapolis, MN
  • United States
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Latest Activity

Lester Shen commented on Lester Shen's blog post Energy bills up? There may be humans in your building
"Thanks for letting me know about that video. I hadn't seen it before. It is a good parallel. Now we need to figure out the converse. "
Jul 14
Nate Adams commented on Lester Shen's blog post Energy bills up? There may be humans in your building
"Lester, I think you answered your own question, nope, we haven't figured out the convenient and efficient way yet.  Have you seen Corbett Lunsford's If Cars Were Built Like Houses? A good parallel. "
Jul 14
Lester Shen commented on Lester Shen's blog post Energy bills up? There may be humans in your building
"Thanks, Nate. Your car analogy is a really good one. Unlike houses, cars are designed as whole systems, taking into account of the safety and comfort of the driver and passenger while being designed for transportation. The car industry creates cars…"
Jul 14
Nate Adams commented on Lester Shen's blog post Energy bills up? There may be humans in your building
"Lester, great article. I've been noodling about an ideal control for a building lately. Right now homes are kind of like carburated cars - they need constant adjustment and are not user friendly. When's the last time you pulled a choke?…"
Jul 14
Lester Shen commented on Lester Shen's blog post Energy bills up? There may be humans in your building
"Thanks for your comment, Ted. It's Nest's design process that plays into this. It's taking a user centered approach to enhance usability and operability. I'm product agnostic on this. The ecobee is a great thermostat and provides…"
Jul 13
tedkidd commented on Lester Shen's blog post Energy bills up? There may be humans in your building
"Sweet! Will the industry listen? I don't see how Nest plays into this. Isn't it a black box? We use Ecobee - it allows us to see how equipment and enclosure perform together, and when occupants are uncomfortable through logging…"
Jul 13
Lester Shen's blog post was featured

Energy bills up? There may be humans in your building

Reposted from i.e., the Center for Energy and Environment's Innovation Exchange blog -- http://mncee.org/Innovation-Exchange/ie/As you read this blog post, what room are you in? How’s the lighting? How’s the temperature? Do you control their levels — or is someone else, somewhere else, running the show? About 40% of energy use in the U.S. is consumed in residential and commercial buildings. Of course, within them, it’s we…See More
Jun 23
Lester Shen posted a blog post

Energy bills up? There may be humans in your building

Reposted from i.e., the Center for Energy and Environment's Innovation Exchange blog -- http://mncee.org/Innovation-Exchange/ie/As you read this blog post, what room are you in? How’s the lighting? How’s the temperature? Do you control their levels — or is someone else, somewhere else, running the show? About 40% of energy use in the U.S. is consumed in residential and commercial buildings. Of course, within them, it’s we…See More
Jun 3
Corey Johnson commented on Lester Shen's blog post Combi System Animations
"I wish that I would have had a better design plan when we built our first house. <a href="http://www.maxxsale.com”>Maxxsale</a>;  "
Dec 24, 2013
Lester Shen commented on Lester Shen's blog post High Efficiency Should Be a Drain: A Closer Look at Condensing Boilers
"Hi, Clifford. Thanks for your question. Here's Russ' reply to your comment: We have focused on commercial and multi-family building applications so are not certain about availability of variable speed pumps for single-family sized boilers.…"
Nov 11, 2013
tedkidd commented on Lester Shen's blog post High Efficiency Should Be a Drain: A Closer Look at Condensing Boilers
"Clif, vs pumps allow for some amazing control options. For more on this follow guru's like Bean, Holihan, Gifford, and McGrath. Lester, thanks. Yes, absorption efficiency, not distribution efficiency. Lower flow and higher delta at transfer…"
Nov 10, 2013
Clifford Ageloff commented on Lester Shen's blog post High Efficiency Should Be a Drain: A Closer Look at Condensing Boilers
"Are there variable speed drives and motors available for residential applications that are cost effective?  Most boilers have pumps with one speed - on. "
Nov 7, 2013
Lester Shen commented on Lester Shen's blog post High Efficiency Should Be a Drain: A Closer Look at Condensing Boilers
"Hi, Ted. Thanks for the comment. Here is Russ' reply: Modulating vs Non-modulating.  For this level of demonstration we did not try to get into the subtleties of modulating burner operation, although we do recognize that nearly all new…"
Nov 6, 2013
tedkidd commented on Lester Shen's blog post High Efficiency Should Be a Drain: A Closer Look at Condensing Boilers
"This looks to lump all condensing boilers together, not differentiating MODULATING condensing from single output condensing.   Scanning, this caught my eye: "A key way to optimize condensing boiler efficiency is to keep the boiler system…"
Nov 1, 2013
Lester Shen's blog post was featured

High Efficiency Should Be a Drain: A Closer Look at Condensing Boilers

Reposted from i.e., the Center for Energy and Environment's Innovation Exchange blog -- http://mncee.org/Innovation-Exchange/ie/The market share of condensing boilers, sometimes called high efficiency boilers, has increased dramatically over the last several years, thanks in part to utility programs that provide rebates. Unfortunately, many of these newly installed condensing boilers only achieve a fraction of their expected…See More
Oct 31, 2013
Dennis Heidner commented on Lester Shen's blog post Leveraging Human-Building Interaction (HBI)
"ACM & IEEE (Computing professionals and electrical engineers) have annual conferences on sensors, sensor systems, building sensors, and intelligent buildings. (Sensorsys & Buildsys)  ASHRAE also has conferences on intelligent automation…"
Aug 22, 2013

Profile Information

Company
Center for Energy and Environment
Professional Interests
program design
behavior and persuasion
feedback
training and education
social media
pattern recognition and language
lean
home energy labeling
Website URL
http://mncee.org
Blog URL
http://mncee.org/Innovation-Exchange/ie/
Twitter ID
mncee
LinkedIn Profile
Lester Shen
Pinterest Page
http://pinterest.com/ceeinex/

Lester Shen's Blog

Energy bills up? There may be humans in your building

Reposted from i.e., the Center for Energy and Environment's Innovation Exchange blog -- http://mncee.org/Innovation-Exchange/ie/

As you read this blog post, what room are you in? How’s the lighting? How’s the temperature? Do you control their levels — or is someone else, somewhere else, running the show? 



About 40% of energy use in the U.S. is consumed in…

Continue

Posted on June 3, 2015 at 7:04am — 6 Comments

High Efficiency Should Be a Drain: A Closer Look at Condensing Boilers

Reposted from i.e., the Center for Energy and Environment's Innovation Exchange blog -- http://mncee.org/Innovation-Exchange/ie/

The market share of condensing boilers, sometimes called high efficiency boilers, has increased dramatically over the last several years, thanks in part to utility programs that provide rebates. Unfortunately, many of these newly installed condensing boilers…

Continue

Posted on October 29, 2013 at 12:30pm — 5 Comments

Leveraging Human-Building Interaction (HBI)

Reposted from i.e., the Center for Energy and Environment's Innovation Exchange blog -- http://mncee.org/Innovation-Exchange/ie/

 

Give me a lever long enough and a fulcrum on which to place it, and I shall move the world.



-Archimedes

My colleague Jenny Edwards often describes the…

Continue

Posted on August 8, 2013 at 8:34am — 9 Comments

The Process Approach of Human-Building Interaction (HBI)

Reposted from i.e., the Center for Energy and Environment's Innovation Exchange blog -- http://mncee.org/Innovation-Exchange/ie/

In the early nineties, I began developing interactive CD-ROMs to teach school age children about energy and environmental issues. We created games to teach these concepts. An essential step in our process was…

Continue

Posted on June 26, 2013 at 7:00am

Comment Wall (3 comments)

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At 8:22am on September 18, 2012, David Eggleton said…

Hi.  I would like to participate in the development/refinement of the pattern language.  Please advise.

At 5:31am on November 10, 2010, Pat M. Love said…
hi Les, it has been a long time, but "ole" friends just bounce around and eventually come back your way. I watch the VOLSL on a big screen at home these days, and &*%$###@ to Kiffin. We're having a slow year, but at least we're setteling in for better days.

Take care. Pat.
At 7:52am on November 8, 2010, Ross Jackson said…
Dude, we are now connected! But seriously, I'm new to this type of media, but what the heck I'm all about reconnecting right now. So how are you? I'll use your CEE email.
 
 
 

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