Lester Shen
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  • Minneapolis, MN
  • United States
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Latest Activity

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
Lester Shen commented on Lester Shen's blog post Leveraging Human-Building Interaction (HBI)
"Here are a couple of interesting news items I've come across this morning: Smart home in a box could capture community behaviorSmart building projects highlight need for new utility business, regulatory modelsThe need for a systems-thinking,…"
Aug 21, 2013
Dale Sherman commented on Lester Shen's blog post Leveraging Human-Building Interaction (HBI)
"It's one thing to design and build new structures using state-of-the-art interfaces for occupants to intuitively manage their environment, but quite another to incorporate HBI equipment into existing structures.  The plethora of engineered…"
Aug 20, 2013
Dennis Heidner commented on Lester Shen's blog post Leveraging Human-Building Interaction (HBI)
"First,  there are a lot of people that do not use smart phones and tablets.  Often the older you are the less likely you will have a smartphone / tablet.  The older you are - the more likely the house is also older and could use some…"
Aug 19, 2013
tedkidd commented on Lester Shen's blog post Leveraging Human-Building Interaction (HBI)
"Nicely put Brett. Seems to be a lot of dependencies.  Do you air condition with the windows open?  If so, certainly "off" when you are not at how is cancelling your efforts to cool the great outdoors.   Many homes are…"
Aug 19, 2013
Brett Little commented on Lester Shen's blog post Leveraging Human-Building Interaction (HBI)
"Does it really save energy to turn it down while your not there? It seems to be not the case. I think the Nest has the best solution in that it will just adjust to what you want. Otherwise, insulation and better HVAC is the only to make a dent for…"
Aug 19, 2013
tedkidd commented on Lester Shen's blog post Leveraging Human-Building Interaction (HBI)
"Sure Lester, you know I love your stuff. I'm not a huge fan of gadgets that people tend to quickly abandon. Energy Efficiency, to me, is not behavior. It is not conservation. It is not "doing less and getting less". It is getting…"
Aug 16, 2013
Lester Shen commented on Lester Shen's blog post Leveraging Human-Building Interaction (HBI)
"Thanks, Ted. I think that part of the point is that it is one thing to engineer the right solution and another thing to design the right solution. We absolutely have to consider the user and how the user actually uses it."
Aug 16, 2013
tedkidd commented on Lester Shen's blog post Leveraging Human-Building Interaction (HBI)
"How do you program a thermostat to save energy? I have a client using Time Warner's security service including the home automation. He has to continuously adjust his thermostat because the thermostat comes programmed to "save energy"…"
Aug 16, 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

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…

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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…

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Posted on June 26, 2013 at 7:00am

Behavior and Usability: At the Interface of Human-Building Interaction

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



Of course, behaviorism works. So does torture. Give me…

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Posted on April 25, 2013 at 6:00am — 1 Comment

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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