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
Added by Tom Mallard on December 21, 2011 at 1:00pm — No Comments
Just discover huge saving possibility in commercial building. Its simple: maintain your AHU unit an TURN ON rotary heat exchanger gives you 5 000 EUR annual savings. Isn't it good Christmas present ? :)
Added by Nikolai Tihhonov on December 21, 2011 at 12:00am — No Comments
by Don Ames, www.detectenergy.com
Story appeared in my local newspaper the other day about an apartment laundry room that had dryer problems. It occurred to me, being the highly trained home energy auditor that I am, that any clothes dryer that had such a problem that it would catch fire, must have been a very inefficient clothes dryer for a long…Continue
Twas the night before Christmas, when all through the house
Not a cool draft was freezing, to wake up the mouse.
The owner called a contractor with knowledge so rare,
In hopes that great comfort soon would be there.
The children were nestled all snug in their bed,
With nary a cough or a cold in their heads.
And Momma in her Kerchief and I in my cap
Had just settled down for a long winters nap.
When from my neighbor there a rose such a…Continue
by Don Ames, www.detectenergy.com The security of home energy conservation and the Energy Spy Insider.
Think of the ways we try to separate the outside climate from the inside climate. In a nut shell, that is the goal of an energy efficient house. Take a snowmobile or a dog sled and you will see a domed home made out of snow and ice.…Continue
Added by Don Ames on December 16, 2011 at 12:29pm — No Comments
If someone told me they could improve the efficiency of my computer so that it operates quicker, at no extra cost to me, I can’t imagine I’d turn them away. Yet, the energy efficiency industry offers a similar option for homes and businesses and at least so far, consumers aren’t flocking to the programs.
On-bill financing gives customers the ability to finance energy efficiency improvements made to their homes and businesses at no upfront cost. Customers pay for the insulation,…Continue
One morning I realized that I could cut down my showering time by at least one minute if I could combine my shampooing and conditioning into one step. Inspired, I went to a high-end grocery store that I will call, “Whole Paycheck” looking for what has been an illusive item for me—a combination shampoo and conditioner that really works; someone stacking items in the hair-care section told me that no such thing exists.
It’s a tough invention, since shampoo and conditioner are supposed…Continue
Added by Jim Gunshinan on December 14, 2011 at 3:11pm — No Comments
Probably the usual thought in the HVAC industry by technicians is that the units need to be made bigger for comfort. Perhaps this comes from the idea of coming home from work, and needing a set back thermostat to do its magic, and get the home comfortable fast,…Continue
Added by Laura Reedy Stukel on December 9, 2011 at 12:10pm — No Comments
Electric utilities operated under a rarified business model for decades. Their customers were captive so they rarely had to think about what motivated them to buy. New government energy efficiency mandates have changed that, and done so with an ironic twist. Now utilities must figure how to get their customers to refrain from buying.
It’s not easy persuading people to stop using something they like as much as electricity. But behavioral science is coming to the rescue – or at least…Continue
By Don Ames, www.detectenergy.com
I receive calls on a regular bases asking me about help fixing the problem of being cold and whether or not I have heard of any Weatherization Assistance Programs. These calls are not about being cold for a day - while the furnace is fixed - or being cold for a week - while a few more dollars are scraped together to have the…Continue
Added by Don Ames on December 7, 2011 at 1:03pm — No Comments
by Don Ames, www.detectenergy.com, The Energy Spy Insider weekly Free eNewsletter.
The heat pump maintains its great efficiency by recycling refrigerant over and over again. In fact, the Heat Pump is the king of recycling. If you've seen a new, shiny heat pump lately,…Continue
By Guest Blogger Kara Saul Rinaldi
More than half of the states in the nation have created programs to increase the energy efficiency of homes through a comprehensive approach that looks at all opportunities to save energy, from insulation to upgrading heating and cooling systems. When taxpayer and ratepayer dollars are used, it is essential that these programs are reviewed with a cost-effectiveness test that provides policymakers with adequate knowledge about the programs’…
Added by Elisa Wood on December 4, 2011 at 3:24pm — No Comments
Why we need Passive houses - Factor five: transforming the global economy through 80% improvements in ... von Ernst Ulrich Weizsäcker,Club of Rome,Natural Edge Project…Continue
Added by Guido Schuler on December 3, 2011 at 12:00pm — No Comments
Are Energy Efficiency programs we are participating in another well-meant hustle, or is there lasting prosperity to be had in our industry? Beyond anecdotal reports, ARRA-funded enthusiasm for excellent Energy Efficiency (EE) programs like Energy Upgrade California and Evergreen, San Jose’s “Project 5002,” are EE endeavors really…Continue
Added by Nichole Edraos on December 2, 2011 at 2:55pm — No Comments
This is the Air Pressures, Duct System, the Boots, the Registers, Equipment Cabinets, Air Balancing, Temperature rise and drop parameters, etc.
This is a greatly overlooked and not understood part of a system, even by most HVAC Journeymen and contractors. How do we come to this conclusion?…Continue
We all know what humidity is - it is the cause of the mold on the ceiling in the bathroom. Humidity is what happens to the bathroom mirror during a shower. Humidity is why we have an exhaust fan in the ceiling of the bathroom. Humidity is why a hot summers day in …Continue
This time two weeks ago I was in Anaheim, California, at the National Association of Realtors’ Annual Conference, themed “Seize the Day“.
I am still struck by the bigness of it all. Not just the sheer numbers (over 20,000 of us!), but by the strength of the passion and the vision. Yet I am still wondering, are we delivering what future generations of home owners need…Continue
Added by Christopher Cadwell on November 27, 2011 at 9:00pm — No Comments