Building Science is not really science; it is more of a concept. While the concepts were developed by scientists the system itself is not really hard science. The concepts are generally employed by building analysts and construction professionals. While I consider myself a student of building science I do not consider myself a building scientist. I am simply a tradesman with special training. While some in the field might have different opinions about their role in this industry I am…Continue
Will new technologies democratize energy much the way the Internet did information?
Industry movement seems to point in that direction with the rise of the smart grid, time-of-day pricing, distributed solar, and the electric vehicle. Together these technologies offer a vision of a less centralized energy system, one where communities and households ‘vote in’ or shape the electric grid by how they decide to consume energy, a phenomenon also called the …Continue
A seldom practiced design procedure, equipment selection, has been part of the International Residential Code for many years, and local MA/RI code at least since 2010. This critical step is the second part of residential system design, following a Manual J load calculation and prior to the Manual D duct design. I think confusion around the dated manual has contributed to lack of use and enforcement. Whether you are installing an air-conditioner, heat pump, furnace, or boiler, there…Continue
I've been wondering lately why we're so hell bent on testing houses. After all, we're a bunch of smart building scientist type guys and gals, right? We may not be Joe Lstiburek's (for which our families and fiends, unbeknownst to them, are mighty grateful), but we have a working knowledge of air and moisture movement, thermal and pressure boundaries, various Deltas (T, P, and the rest), and all that other stuff BPI made us learn. We don't assess houses one day in Tallahassee, the next in…Continue
Maureen Mahle is the vice president and director of Sustainable Housing Services for Steven Winter Associates, Inc. She’s also new to the Home Energy Board of Directors. As a welcome to the board, and as an introduction to our readers, we decided to get to know Maureen a little better. Below is our conversation.
"Ma'am, we've just tested your house and found your infiltration rate to be 16.7 ACH50, your R-values to be only 26% of the IECC…Continue
It was my first weatherization conference since becoming the editor of Home Energy. I remember sitting in the crowd listening to the opening speaker and being very inspired. We’re soldiers, I thought. Some of us are on the front lines—the weatherization workers—and some of us, like the staff at Home Energy, offer support from the safety of our offices in Berkeley. We are fighting for our nation’s energy security, and for the health of children and adults, and for the survival…Continue
Added by Jim Gunshinan on October 17, 2012 at 3:00pm — No Comments
The discovery of new materials for making cheap and efficient solar cells is the Holy Grail for solar panels industry.
Some recent findings represent a significant step towards achieving that goal.…Continue
Added by Gjorevski Saso on October 15, 2012 at 10:02am — No Comments
I grew up in Los Angeles, described as a true ‘post-modern’ city because it lacks a recognizable center. Sprawling in size, it developed as a cluster of independent destinations connected by a network of transportation lines. This is partially why the symmetric pattern of Twin Cities neighborhoods, while more common across the Midwest, is notable to me. A much older settlement, the Minneapolis-St Paul axis forms a central core, and the suburbs radiate outward in tiers. The first ring suburbs…Continue
When your "check engine" light comes on in your car, your mechanic (or you, with a low-cost codes reader) can get a quick readout about the possible problem(s). Now, CA's Title 24 will require something similar for Rooftop HVAC units by 2014.
See this article:…Continue
Lately we've been thinking about how readers who know nothing about Home Energy magazine, or home performance for that matter, would react if they stumbled upon our website. Yes, our magazine is aimed at home performance professionals, but what about the people that are just entering the profession? Or those that are thinking about it?
In an effort to help those individuals understand what our industry does, and how our magazine is connected, we came up with the following…Continue
Added by Home Energy Magazine on October 11, 2012 at 1:31pm — No Comments
Back in May, I was looking to buy a new flat screen computer monitor for my home office. After spending ten minutes searching online, I found the best deals at J&R Electronics and decided to go down to their Sunnyvale store to make sure that I could find a model that would connect successfully to my MacBook Air laptop. I was overwhelmed by the vast selection of flat screen monitors and really had no idea which one to go for after I narrowed my search down to a 23" size monitor and a…Continue
Added by Alex Katzman on October 11, 2012 at 8:49am — No Comments
Reposted from i.e., the Center for Energy and Environment's Innovation Exchange blog -- http://mncee.org/Innovation-Exchange/ie/
The business and technology worlds make much of innovation and how it will power the future. One process that has become popular as a means to foster innovation in companies is design thinking. Tim Brown, the CEO and president of …
I have a theory for what the N stands for in the N factor but really no clue. I understand what the n factor intends to do and how to use it but fail to understand how it applies in the real world and in particular to San Diego.
The N factor is a correction number that smooths the data for blower door numbers in multiple climate zones of homes of different size and height and brings the homes into a level playing field. We then can use this number…