"John-
I think I can answer this one as well. The pressure will equalize pretty much instantly in all of the building cavities. The only exception would be for cavities that are extremely tight -- as in much less than even 1 CFM50 of…"
-
Michael Blasnik
- Male
- Boston, MA
- United States
- Featured Blogs
- Discussions (17)
- Events
- Groups (4)
- Photos
- Photo Albums
- Videos
Michael Blasnik's Groups
-
ACI (Affordable Comfort,…
53 members
-
1000 Home Challenge
99 members
-
HVAC
155 members
-
Building Simulations
63 members
Michael Blasnik's Page
Latest Activity
Michael Blasnik replied to Colin Genge's discussion What is the value of using a pressure pan to test outlets?Michael Blasnik replied to Tim Marlett's discussion Blower Door Depressurization and the Human Ear"This concern is rather silly. The pressure difference created across the ear by a blower door is on the order of what an elevator ride up 3 floors would create or sliding diwn a tall slide. It's much smaller than taking an elevator up a high…"
Michael Blasnik replied to Colin Genge's discussion What is the value of using a pressure pan to test outlets?"Colin-
I just have to chime in here - the dP across the pressure pan has nothing to do with how leaky the outlet is. When covered by the pressure pan the outlet leak has no flow - it has become a pressure tap into the wall cavity. The pressure is…"
Michael Blasnik joined Robyn Hall's group
ACI (Affordable Comfort, Inc.)
ACI (Affordable Comfort, Inc.) is a nonprofit organization providing cutting-edge information, education and best practices in the area of residential building construction known as home performance and weatherization. Through national and regional educational and networking events, ACI provides innovative building science knowledge presented by renowned industry experts focused on advancing residential energy efficiency nationwide. It is our…See More
Donn Davy left a comment for Michael Blasnik"Hi, I'm a HERS rater, THC participant, CA Title 24 energy plans examiner, etc, and saw your talk at ACI. Might you be able to make your Simple energy modeling software (I think you said it was a spreadsheet) available for my/our use.…"
Michael Blasnik replied to Classic Residential, Inc.'s discussion Learning Thermostat"a slightly more polite answer gets a reply to your questions:
TK> For me, 5% of total consumption (not just heat) would mean less than $50 a year. Do you think it would be fair to say this savings is so small as to be a rounding error?…"
Michael Blasnik replied to Classic Residential, Inc.'s discussion Learning Thermostat"Ted-
"True proof of savings is logging temperatures" ? really -- I thought true proof of savings is measuring energy use before and after in large scale studies. Isn't it energy savings we are after -- it seems like measuring…"
Michael Blasnik replied to Classic Residential, Inc.'s discussion Learning Thermostat"Ted-
When you declare the laws of physics or thermodynamics wrong then it should be up to you to provide some evidence to support your beliefs. But I'll give you the benefit of the doubt. I certainly agree that energy models are…"
Michael Blasnik replied to Classic Residential, Inc.'s discussion Learning Thermostat"If you check out the more recent research (e.g., from FSEC and ECW) on AC sizing and read the recent Proctor article in Home Energy you will see that there isn't much energy penalty even for oversizing cooling systems. Your claims about…"
Michael Blasnik replied to Classic Residential, Inc.'s discussion Learning Thermostat"It seems like you have some sort of aversion (hostility?) to controlling temperatures in homes yet some sort of faith-based belief in the benefits of right-sizing and multi-stage equipment. I've got some data on thousands of homes (and…"
Michael Blasnik replied to Classic Residential, Inc.'s discussion Learning Thermostat"It seems like you are saying that setting back the temperature when you sleep or are away does not save energy -- at least if what you mean by "gaming operation" is temperature setback. I've performed multiple studies for…"
Michael Blasnik joined David Eggleton's group
1000 Home Challenge
Linda Wigington distinguished between deep retrofits & deep energy reductions, thus expanding the range of strategies & tactics from which we might propose when engaging with people, the ones who choose.See More
Michael Blasnik replied to James White's discussion Using Average Monthly Temperature to Model Home Energy Use in the group Building Simulations"It seems that we are getting closer to agreement on issue #2. In your initial post you said "The intersection of this line with the X axis, typically 70F, indicates the average temperature maintained inside the home." I disagreed with that…"
Michael Blasnik replied to James White's discussion Using Average Monthly Temperature to Model Home Energy Use in the group Building Simulations"some post holiday replies:
You said:"We have found that the average temperature plots vs Watts per square foot provides a simple and easy to use tool for analyzing customers' electric bills. Within two minutes of a customer calling with a…"
Michael Blasnik replied to TJ Ewing's discussion Furnace Blower Fan on 100% of the time - Good or Bad or it depends? in the group HVAC"This is just plain wrong. Standard furnace blowers use about 500 Watts and setting them to "ON" for the whole year vs. AUTO wastes about 3,000 kWh/yr. This is a tremendous waste of energy. In addition, in cooling season the fan adds…"
Profile Information
- Company
- M. Blasnik & Associates
- Professional Interests
- measured results, impact evaluation, infiltration, modeling, healthy skepticism
- LinkedIn Profile
- http://www.linkedin.com/pub/michael-blasnik/18/399/671
Comment Wall (1 comment)
- At 5:17pm on December 15, 2011, Donn Davy said…
Hi, I'm a HERS rater, THC participant, CA Title 24 energy plans examiner, etc, and saw your talk at ACI. Might you be able to make your Simple energy modeling software (I think you said it was a spreadsheet) available for my/our use. I'd love to be able to show better prediction (retrodiction) of energy bills for my clients, some of whom have complained that the HERS Whole House reports are pretty far off, just like you said. Many thanks.
Home Energy Pros
Home Energy Pros was founded by the developers of Home Energy Saver Pro (sponsored by the U.S. Department of Energy, under the American Recovery and Reinvestment Act) and brought to you in partnership with Home Energy magazine.
Latest Activity
Bachi Brunato replied to Bachi Brunato's discussion Boxing and Insulating Around Non-ICAT Cans"As it turns out, we have 10 Halo 99RT housings with Halo 998P Eyeball trim in the kitchen. The trim…"
Bachi Brunato's discussion was featuredBoxing and Insulating Around Non-ICAT Cans
I have a client with 16) 4" halogen recessed light fixtures in the attic.I'd like to cover the cans…See More
Johnny Ritzo's discussion was featuredSelecting a Water Heater
I am looking at updating the heating and water heating systems in a rental home I recently…See More
George Kopf's discussion was featuredMisting Aeroseal in Pressurized Home = Amazing Air Sealing Innovation
As a training program manager for a non-profit, I am often too busy managing my program to catch…See More
Tom Delconte's blog post was featuredThe Surroundings Are Comprised of (fill in the blank) !
In Building Science…See More
Christopher Morin's blog post was featuredSelling with Rebates: The Simple Payback
The easiest way to show a homeowner how their investment in high-efficient equipment will help…See More
Mike Rogers's blog post was featuredHOMES Act introduced with Bi-Partisan Sponsorship
We don't see a lot of bi-partisan bills in Congress these days. Here's one focusing on home…See More
Mike Rogers posted a blog postHOMES Act introduced with Bi-Partisan Sponsorship
We don't see a lot of bi-partisan bills in Congress these days. Here's one focusing on home…See More
David Eggleton replied to Jose Macho's discussion Why Are Energy-Saving Home Inprovements Down??"That varies, as policies are different from state to state."
Orvil D Boyer replied to David Starrett's discussion I am looking for a good IR camera in the group Energy Auditing Equipment for Sale, Trade or to Purchase"I have a Fluke TIR 32. Used aproximately 10 times 1.5 yrs old. This is the first…"
Orvil D Boyer joined allen p tanner's group
Energy Auditing Equipment for Sale, Trade or to Purchase
Discuss the pros and cons of the equipment you are interested in prior to purchase. Post equipment…See More
© 2013 Created by Lawrence Berkeley National Laboratory.
