All Blog Posts (1,423)

Net-Zero Energy Homes at No Additional Up-front Cost

The U.S. residential real estate market is booming, with new home sales steadily rising over the last few years. In March 2017, over 621,000 new single-family homes were sold at a median sales price of $345,800. Imagine if most of these new home developments were…

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Added by Radhika Lalit on October 11, 2017 at 9:30am — No Comments

Wood Gas For Electrical Power? Or "How to run a generator on wood gas."

Modern wood gas powered electrical generator.
  Wood and coal gasification was used in the early days of the gas fired street lamps before natural gas came to be…
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Added by Dannie Jackson on October 9, 2017 at 10:30pm — No Comments

Envisioning A Sustainable Green Market And Economy





Amazing Energy-Generating Buildings for the 2017 Astana World Expo (?)



  As interesting as the above vision is, we have to ask our selves if the cost of construction to realize the artistic vision of this building, will in any wise be recovered by its projected energy generation capabilities?  For the most part I can see a need for lots of interior cooling and have to ask where the source or power for this is coming from? …
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Added by Dannie Jackson on October 9, 2017 at 5:43pm — No Comments

MPG for Homes - The Quest for the Best

An mpg-like rating for homes is here. For the first time in history, people can find out the expected energy use of any home in the U.S. This single piece of information conveys helpful insights including the expected cost of maintaining a home, the environmental impact of the home, and a proxy for how comfortable the home is likely to be. This information will become more widely available from more sources as…

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Added by Jacob Corvidae on October 9, 2017 at 4:30pm — No Comments

Core Heat And Other Concepts









  In some places the use of solar heated liquids from hot water solar panels are used to provide heating for floors which are fitted with tubing in the floor to move the heated liquid through.  Heated liquid from hot water solar panels can also be sent to registers or radiators in remote places in a home such as its core.



  Another innovative way that heated liquids can be used is to move the liquid into a…
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Added by Dannie Jackson on October 9, 2017 at 2:30pm — No Comments

Sizing Solar Space Heating Panels

Solar Space Heating Panels

 USSolarHeating.com
   This article is open to additional information being added later as I can manage the time. I would want to detail as much useful information as possible, however for today what we have here is a good start.


   In this discussion we will be looking at solar space heaters of the air…
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Added by Dannie Jackson on October 7, 2017 at 11:00am — No Comments

Tiny House Boom

 
Subtitle: "A Good Way To Introduce Green Building On A Mass Scale"


Here is a tiny house of around 800 square feet that sports some of the better concepts in energy efficiency along with solar heating.  With design devoted to lowering the energy signature of the structure it does not take…
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Added by Dannie Jackson on October 5, 2017 at 10:00am — 3 Comments

Performing an Indoor Air Quality Assessment

Too bad you can't simply whip out your Tricorder to make a quick environmental analysis.…

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Added by Bob Krell on October 3, 2017 at 8:46pm — No Comments

Home Performance Coalition (HPC) Announces the Launch of Home Energy Pros Forum

HPC is proud to announce that the premier online community for the home performance and weatherization industry – the Home Energy Pros Forum – is now live and active.

Home Energy Pros Forum, a division of HPC, is an online community dedicated to amplifying the collective knowledge base of home energy professionals by offering a space for sharing resources, education, and knowledge. Merged from the rich dialogue and assembly of resources that Home Energy Pros provided over the years,…

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Added by Home Performance Coalition on October 3, 2017 at 9:30am — No Comments

Designing A Smart Home With Phase Change Thermal Mass



A phase change thermal mass material that is applied over

wall cavity insulation before the drywall is applied.

This material is rated to store 91 Btu per square foot.

Phase Change Energy Solutions USA…

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Added by Dannie Jackson on October 2, 2017 at 7:45pm — No Comments

Applications Now Being Accepted for BPI's Jon Siemen Memorial Scholarship

The Jon Siemen Memorial Scholarship has been developed to honor the life, memory, and work of Jon Siemen, who passed away in March 2015. Jon started his career in weatherization in the late 1970s, when he began working at Community Action in Southwestern Vermont (BROC). Around 1993/1994, Jon and his brother started an air sealing service that they ran for a few years. In 1996, Jon joined the Champlain Valley…

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Added by Home Energy Magazine on October 2, 2017 at 6:37pm — No Comments

The Btu And Geo Thermal Energy

  This is a novel exercise in innovative thinking, which might not seem practical in everyday use, but can have its application sometime, somewhere in the world.  What I want to do here is to look at another source of free renewable energy of the geo thermal kind, and get people to think of ways in which they can use this energy to reduce energy consumption…
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Added by Dannie Jackson on October 1, 2017 at 10:30pm — No Comments

3D Modeling Of Homes









  3D modeling of homes is useful for anyone interested in envisioning their ideas or helping someone turn their floor plan into a model to see how their idea might look in reality.  3D modeling also helps the green building designer to look at such things as solar…
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Added by Dannie Jackson on October 1, 2017 at 8:30pm — 2 Comments

How To Make Use Of Passive Geo Thermal Energy For Cooling



From article "Earth Tube Materials"



  In the above picture we see a massive earth tube

construction being built for use by a large building.


  Sometime in the 1970's some engineers decided that they could make use of the geo thermal energy of…
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Added by Dannie Jackson on October 1, 2017 at 11:30am — No Comments

How To Approach A Home Energy Design Scenario

  When you look at the way air conditioners work in terms of their efficiency, which is to say in terms of the amount of electrical power that is expend to remove a certain quantity of thermal energy in Btu terms, you realize that the air conditioner is much more energy efficient than a furnace.  And hence the concept of the heat pump as a heating system was born from the air conditioner concept because of the efficiency.  What…
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Added by Dannie Jackson on September 30, 2017 at 11:00am — No Comments

How Much Attic Insulation Do I Need? If I want to build a passive solar heated home?

  I ask this question purely from the stand point of a green built home design where one is thinking of using passive and active solar heating.  This is for a new design and not for retrofitting into current designs.  Furthermore the kind of design I am thinking of utilizes a heat recovery ventilator, and since we can have thermal up drafts that lead air up wards to ventilate out of any crack in the ceiling, we might want to…
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Added by Dannie Jackson on September 30, 2017 at 9:47am — No Comments

Affordable Energy Efficient Design With Initial Renewables

  A so called sustainable design is not sustainable cost wise on the market if its consumer cost falls into the hard to afford range of investments.  What I want to discuss here might seem opposite in some ways to the things we have been taught with regards to building for sustainability.  Many green building visions fall within the unsustainable cost column, where they have to be subsidized to recover their cost hence we can…
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Added by Dannie Jackson on September 30, 2017 at 7:30am — No Comments

GCE Services is Hiring!!!!!!!!

Commercial Building Energy Efficiency Manager

 

ORGANIZATIONAL OVERVIEW

Green Coast Enterprises develops real estate and performs a continuum of real estate services focused on urban areas in need of community renewal located in the Southeastern United States, with a special focus on coastal areas threatened by climate change. Our projects are profitable, and they result in economically vital, environmentally superior spaces that are…

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Added by Sikeithia Wilson on September 27, 2017 at 11:30am — No Comments

Home Performance Coalition Announces the Merger of the Home Performance Forum and Home Energy Pros to Become the Premier Sharing Space for Home Energy Professionals

September 26, 2017 - Washington D.C. Creating a collaborative online community for home energy professionals, the Home Performance Coalition unites two premier communities into one dynamic, global social network.



For the past seven years, the home performance industry has had two thriving online communities where members openly discuss topics such as energy efficiency, building science, professional education opportunities, field procedures, program best…

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Added by Home Performance Coalition on September 26, 2017 at 10:45am — No Comments

Home Performance Coalition Announces the Merger of the Home Performance Forum and Home Energy Pros to Become the Premier Sharing Space for Home Energy Professionals

Some exciting changes are coming to Home Energy Pros. 

Looking back, the fruits of seven years spent growing the network include a community of nearly 6,000 members who have collectively generated thousands of pages of crowd-sourced content and discussion (more on that here). Over 3 million non-members have viewed the…

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Added by Evan Mills on September 26, 2017 at 9:00am — No Comments

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Psychrometric Chart Training

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Too many Heat Pump Water Heaters in a basement?

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How would you insulate this roof?

Started by David Butler in General Forum. Last reply by David Butler yesterday. 2 Replies

Dirty solar panels

Started by Evan Mills in General Forum. Last reply by Stacie Bagnasco on Monday. 1 Reply

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Psychrometric Chart Training

Looking through the various areas of this site, I didn't see too much information or training on…See More
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Dannie Jackson's blog post was featured

Core Heat And Other Concepts

  In some places the use of solar heated liquids from hot water solar panels are used to provide…See More
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Michael Duclos replied to Brad Cook's discussion Too many Heat Pump Water Heaters in a basement?
"I’ve been looking into Sanden for a multi-family PH near Laconia, NH, ASHRAE 99.6% temp is…"
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David Butler replied to Brad Cook's discussion Too many Heat Pump Water Heaters in a basement?
"theoretically, let's say you perfectly isolate the HPWH from a heat source. The HPWH's…"
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The Applied Research Institute (ARI) at the University of Illinois at Urbana-Champaign is seeking…See More
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