Tom Mallard
  • Bellevue, WA
  • United States
Share on Facebook Share on Facebook Share Twitter

Tom Mallard's Friends

  • Marg properties
  • Patrick Michaelyan
  • David Eggleton
  • Hal Skinner

Tom Mallard's Groups

Tom Mallard's Discussions

Standard Wall Thermal Upgrade Analysis
1 Reply

Continue

Started this discussion. Last reply by Bill Bradbury Dec 2, 2013.

Applied Passive-solar Structural Design
48 Replies

Passive-solar has been known to work well but certain things about our architecture fail the thermodynamic efficiency test and there are reasons why.First is heat-transfer through conduction, the…Continue

Tags: comfort-zone, heat-transfer, passive-solar

Started this discussion. Last reply by Bill Bradbury Apr 2, 2012.

 

Tom Mallard's Page

Latest Activity

Tom Mallard commented on jose caramelo's blog post Casa Automatica - Aiming for Zero consumption in acclimatization
"Right José, my post was more for someone with an existing home with siding to see what a change it can have thermally to move the siding off of the sheathing. Your system is far better by having no conduction paths, the thermal models show…"
yesterday
Tom Mallard commented on jose caramelo's blog post Casa Automatica - Aiming for Zero consumption in acclimatization
"Nice work. Related to the double wall is a simple upgrade that can be made by using furring under the siding on a building to reduce conduction, the standard wall heats the thermometer to 4.1C, with furring 1.1C for a run of 400-minutes, this is…"
Monday
Tom Mallard replied to Hal Skinner's discussion Rooftop A/C units and exposed ductwork in the group Radiant Control Coatings
"Right, that reinforces my understanding of how it works, I was after what to plug in for values in this small thermal modeling app MIT did, this is a 400-minute run with the standard wall on top vs adding exterior insulation board on the bottom, has…"
Aug 1
Tom Mallard replied to Hal Skinner's discussion Rooftop A/C units and exposed ductwork in the group Radiant Control Coatings
"Sounds like the perfect, thin insulator adding enough thermal inertia to separate two masses and/or mediums a lot better than most insulation. For my use I'd spray it on the downward or exterior side of the board, it helps delay changes a lot…"
Aug 1
Tom Mallard replied to Hal Skinner's discussion Rooftop A/C units and exposed ductwork in the group Radiant Control Coatings
"I'm interested in these coatings, have seen something in trade mags and know it's $$$ off the bill to apply them. My experience was Phoenix, AZ, where the attic was 160F every day for months. The other part of moving cold with air is…"
Aug 1
Tom Mallard joined Hal Skinner's group
Thumbnail

Radiant Control Coatings

A group where people who work with radiant control coatings can share their success stories and let others know all of these coatings different enery saving applications. We have made some tremendous energy saving advances with RCCs.See More
Jul 31
Tom Mallard replied to Luis Hernandez's discussion Solar Heat Air
"Under the average floor for a home with a crawl space is air you don't want inside the home as well as most attic air.This method puts in pipes for thermal-mass and provides good aeration in the joist space then seals it from the crawl space…"
Jul 12
Tom Mallard replied to Luis Hernandez's discussion Solar Heat Air
"I was being specific, using the roof is for where nothin"
Jul 12
Tom Mallard replied to Luis Hernandez's discussion Solar Heat Air
"Consider using sections of roof for the main thermal collection where it's not practical to add a greenhouse or other collection system, use a data logger in the attic close to the peak between rafters to know daily temperature curves to know…"
Jul 10
Tom Mallard replied to Kaushal Bharath Raju's discussion Affordability & Deep Energy Upgrade/Passive House Retrofit in Berkeley, California.
"Right, in all cases you have to reduce the wall heat-transfer rate to upgrade almost any thermal remodel and that's my point, by insulating the OUTSIDE you cut the conduction out of the equation as a direct path of heat-transfer from what is…"
Apr 30
Tom Mallard replied to Kaushal Bharath Raju's discussion Affordability & Deep Energy Upgrade/Passive House Retrofit in Berkeley, California.
""Leaky" is a relative term to thermal transfer rates and air is one of the least effective mediums, fluids and solids transfer heat far more efficiently than air. So if you keep air transfer, leakage constant and upgrade to…"
Apr 30
Tom Mallard replied to Kaushal Bharath Raju's discussion Affordability & Deep Energy Upgrade/Passive House Retrofit in Berkeley, California.
"Excellent Kaushal, all I can do at them moment is advocate using the roof as the main collector & piped water the main thermal-mass, then the wall construction using insulation on the outside under the siding so the look of the home is not…"
Apr 30
Tom Mallard replied to Kaushal Bharath Raju's discussion Affordability & Deep Energy Upgrade/Passive House Retrofit in Berkeley, California.
"Kaushal, this is a technical point, the reason from an energy standpoint they want little leakage is the assumption that the heating or cooling is coming from the grid or by burning fuel oil when passive homes don't need to be air tight to be…"
Apr 30
Tom Mallard replied to Kaushal Bharath Raju's discussion Affordability & Deep Energy Upgrade/Passive House Retrofit in Berkeley, California.
"Thanks for the reply George, having followed around inspectors as part of the pickup crew for years, if you've made a good job of it in all phases, you pass inspection."
Apr 30
Tom Mallard replied to Kaushal Bharath Raju's discussion Affordability & Deep Energy Upgrade/Passive House Retrofit in Berkeley, California.
"I'll post plans when they get finalized then results after it's built Kaushal. Since it's a hangout with 180-degree windows on a mountain ridge at 2,200ft near the Olympic Mts. in Washington, it'll be a good test."
Apr 27
Tom Mallard replied to Kaushal Bharath Raju's discussion Affordability & Deep Energy Upgrade/Passive House Retrofit in Berkeley, California.
"Apology, this is rather much restating my earlier replies but is my reaction to the projects listed after that, since I'm looking for a cheap home to remodel to live in, most of the projects quoted are almost more expensive than the homes…"
Apr 27

Profile Information

Company
Mallard Design Company
Professional Interests
Residential scale wastewater purification using biomass to extract excess nutrients, autonomous architecture leveraging thermal-mass + insulation in wall systems, solar-thermal collection & storage of thermal needs hot&cold.
Website URL
http://www.mallard-design.com
Twitter ID
@tmallard
LinkedIn Profile
http://www.linkedin.com/in/mallarddesigncompany

Tom Mallard's Photos

Loading…
  • Add Photos
  • View All

Tom Mallard's Blog

Applied Passive-solar Structural Design

Passive-solar has been known to work well but certain things about our architecture fail the thermodynamic efficiency test and there are reasons why.

First is heat-transfer through conduction, the wood, drywall, sheathing all having rather high heat-transfer coefficients. Next is convection from a heat-riser which takes the warmth of the floor and moves it to the ceiling.

Until these are dealt with they cost a lot of energy, if one is trying to not require external heating for…

Continue

Posted on December 21, 2011 at 1:00pm

Comment Wall (1 comment)

You need to be a member of Home Energy Pros to add comments!

Join Home Energy Pros

At 8:28pm on March 2, 2011, Diane Chojnowski said…

Hi Tom,

Welcome to Home Energy Pros! Great start...thanks for adding all the great photos and comments. If you're blogging about home performance, this is the place for you!

Thanks!
Diane, HEP Moderator

 
 
 

Home Energy Pros

Home Energy Pros was founded by the developers of Home Energy Saver Pro (sponsored by the U.S. Department of Energy,) and brought to you in partnership with Home Energy magazine.

Latest Activity

Scott Katznelson posted a discussion

Database of zip code or county by climate zone

HI.  I'm looking for a database that could help me assess the average energy use of a home (per…See More
5 hours ago
Hal Skinner replied to Hal Skinner's discussion The 'Touchy - Feely' sales pitch. in the group Radiant Control Coatings
"The 2nd bestsales tool I ever came up with.  aI will be happy to send anyone a test strip like…"
12 hours ago
Patrick Michaelyan joined Hal Skinner's group
Thumbnail

Radiant Control Coatings

A group where people who work with radiant control coatings can share their success stories and let…See More
14 hours ago
Joseph Lamy posted a blog post

After 70 years on the fence, knotty LED light fixtures hide the Ductless in splendor

After the first week, the ductless heat pump and I became so close that could never even think of…See More
17 hours ago
Profile IconHome Energy Pros now has Member Map
18 hours ago
Profile IconLaura Spencer and Ann Griffin joined Home Energy Pros
18 hours ago
Tom White posted a video

The Animals Save the Planet - Energy Efficient Penguin

"Energy saving bulbs use one fifth of the energy of ordinary bulbs." Help the animals save their planet and ours, use energy saving bulbs! http://fartingcow....
21 hours ago
Laurie DiDonato posted an event
Thumbnail

Hybrid HERS Rater Training at Online + Manchester, NH or Berlin, CT

September 22, 2014 at 9pm to October 10, 2014 at 7pm
Online Component- September 29th-October 10thChoose from 2 Classroom Sessions: October 27-30 –…See More
yesterday

© 2014   Created by Lawrence Berkeley National Laboratory.

Badges  |  Report an Issue  |  Terms of Service