The Cambridge Energy Alliance is debuting a poster art exhibit to inform the public about climate change and its impacts, the carbon emissions of Cambridge, and how local citizens can make a difference. Over 80% of Cambridge’s Climate emissions come from residential and commercial buildings, so eliminating wasted energy in our homes and workplaces is a priority.
The Cambridge Energy Alliance art exhibit displays many ways people can conserve energy and get connected to efficiency programs and resources. The Exhibit will be on display from Wednesday, February 16th, 2010 through March 20th, 2010 at the Clear Conscience Café (C3) located inside Harvest Coop‘s Central Square location.
Following the 4-week showing at C3, the CEA art exhibit will be rotated to other locations throughout the city. You can preview the posters by clicking the thumbnail above.
No, we didn’t get a new toilet. We converted our old one with a One2flush kit. Turning the handle one way makes a half flush and turning it the other makes a full flush. And it’s easy to increase or decrease the water levels of both of them if necessary by adjusting the settings on the flapper.
Our toilet was already a modern, low-flow toilet, using just 1.6 gallons of water per flush. But you really don’t need 1.6 gallons for every flush. That’s now the default setting for the full flush, and 0.8 gallons is the default setting for the half flush, but we’ll have to continue playing around with the water levels to figure out what’s the least amount that we can use.
The kit was relatively simple to install—you can tell by the fact that two very non-handy people did it without flooding the bathroom. Taking the toilet tank off was obviously terrifying, and a little difficult, too, because the bolts were corroded. But this video walked us through the whole thing step by step.
We did run into one problem when we were done. The fill valve continued to allow a steady trickle of water through, even when the tank was already full. We were afraid we’d have to replace the whole fill valve (or shamefacedly ask our landlord to do it), but cleaning the valve did the trick.
The problem? The previous tenants had put bricks in the toilet tank to save water. The bricks had started to degrade in the water, and brick dust had gotten into the valve. This is why people now emphasize that if you want to displace water in your toilet, use a bottle of water—don’t use [unprotected] bricks!
Lest our dog-owning readers think that the above comic unfairly singles out their pooches, note that the original research it is commenting upon is not limited to canines. It turns out that a variety of pets have numerous, oft-overlooked consequences for the environment, be it illegal bird and fish trafficking, or the insistence that Fluffy should eat better than her owner. The latter is a rather disturbing and unnatural trend since undomesticated Felis and Canis eat as much of their prey as they can, offal and all. Indeed, one of the major impacts of free ranging cats is songbird predation.
Water pollution is another unfortunate side-effect of pets. Pooper-scooper laws are not just about aesthetics and clean shoes, but public and environmental health. Besides carrying a variety of pathogens, Spot’s spots are essentially fertilizer and can contribute to algal blooms and fish kills if they make it into water ways. It is especially important to clean up after your dog—and there are free baggie dispensers in case you forget to grab some on your way out—if you bring him to Fresh Pond, since this beautiful water body is an important wildlife habitat and a part of our water supply. Cat waste can also contribute to water pollution. Flushable litter has lead to the decline of Californian sea otters, and it can infect other wildlife as well e.g; filter-feeders such as oysters and clams. Other choices of litter are also problematic, although a variety of less harmful options are available.
None of this is to say that you should not have a pet, or dissuade you from pets in the future, but merely to add to the list of things you should consider before doing so besides whether or not you have the necessary time to devote to the pet’s care and convincing your landlord/partner to allow it.
Adopt rather than buy, and if you’re leaning towards exotics be sure to purchase from a reputable dealer.
The Massachusetts Municipal Association (MMA) is offering free Home Energy Saving Seminars to communities across Massachusetts. The Massachusetts Municipal Association is a nonprofit, nonpartisan association that provides advocacy, training, publications, research and other services to Massachusetts cities and towns. If you are interested in hosting a workshop in your community schedule the workshop soon, as the program ends in March.
Through this free service offered by MMA, the Cambridge Energy Alliance hosted a Weatherizing Your Home for Ultimate Energy Savings event on January 12th, that brought together over 45 individuals wanting to learn how to reduce their energy use at home. Speaker Clark Goody from the Conservation Services provided detailed information on home energy audits, cost effective investments, and access to resources to help residents save energy and money.
The free energy seminar stresses the importance of reducing heat usage by providing do-it-yourself sealing techniques, tips on hiring a contractor for in-depth alterations, and resources for home audits and financing alterations. Program attendees learned about:
Air sealing and insulation as the most cost-effective investment for reducing home energy costs
Rebates and grants to reduce the cost of home alterations and appliance purchases
Energy Star ratings as an indicator of product energy efficiency
MassSave home energy audits, enhanced audits, and the weatherization assistance programs
The Home Energy Savings Seminar is an excellent way for communities to connect residents to efficiency resources and programs. Communities can chose from a variety of workshops including:
___ “Intro to Home Energy Savings” provides simple steps to reducing the use of electricity, water, and heat; do-it-yourself techniques for basic home sealing and heating; resources for financing home audits and alterations. ___ “Home Energy Savings for Renters” provides tenant-specific information on basic home energy savings. ___ “Home Energy Savings for Retirees” provides senior-specific information on basic home energy savings. ___ “Weatherizing Your Home for Ultimate Savings” stresses the importance of reducing heat usage by providing do-it-yourself sealing techniques; tips on hiring a contractor for in-depth alterations; resources for home audits and financing alterations.
To learn more about the program contact Alicia Hunt at energy@mma.org, 617-426-7272 ext. 280
On their face, biofuels seem like a pretty good idea: carbon dioxide and sunlight in, carbon dioxide and energy out. Certainly some hobbyists manage to recover waste grease for use in diesel engines, but commercially the field has been dominated by the fermentation of sugars from food crops into ethanol. Unfortunately, due to the large petro-chemical inputs often employed it is unclear whether the result is a net gain. In addition, much attention has been given to the competing interests of fuel vs. food (vs. land conservation).
There is hope that research into the production of cellulosic ethanol, or alcohol from plant fibers, could soon tip the balance decidedly in favor of biofuels. One could use agricultural waste or fast-growing special cover crops however, this material should arguably be composted back into the fields… But what if you could make use of existing knowledge and agricultural land; instead of converting forest into sugarcane fields, or farming prairie? Perhaps even provide a competing market for an otherwise dubious product? This may be possible if research into genetically modified tobacco proves to be fruitful. These plants do not contain pesticide-producing or herbicide-resistance genes. Instead, scientists are working on ways to make the leaves of the plant express existing genes and produce more oil for use in fuel production.
We finally got that Kill-A-Watt we’ve been thinking about, and we spent a good part of last weekend running around the house measuring the energy use of every single piece of electronic equipment we own. It was surprisingly fun. It was also a lot of numbers. (See below.) But we could draw a few conclusions from all of them: Continue reading →
After a series of public hearings, the Cambridge City Council adopted the stretch energy code on December 21st. The stretch code is about 30% more efficient than the baseline building code and has different requirements for both the residential and commercial sectors. Visit the city’s website to learn more about the stretch code, which includes a summary table that outlines the new requirements.
By passing the stretch energy code, the city of Cambridge demonstrates its continued commitment to reduce its carbon footprint, by requiring higher efficiency standards for buildings, which produce 80% of all carbon emissions in the city. In addition, the city of Cambridge has now met one of the requirements of the Green Communities Act, that may provide grant funding for efficiency and renewable energy initiatives.
The stretch code is not without controversy, as expressed in the E2.0 July blog post. The city council weighed in feedback from the community and received recommendations for the code’s adoption from the Climate Protection Action Committee and the city’s Green Building Task Force. The new building code will go into effect on July 1, 2010.
For people who use real Christmas trees, the question comes up each year—should they switch to artificial? Our general rule is that reusable is better than disposable, but in this case, it’s not that simple.
This weekend we went on a cooking/cleaning binge, and one of the things that needed cleaning the most was the filter in our dishwasher. It was surprisingly easy to remove, but so disgusting that Jason and I took turns washing it out—neither of us wanted to deal with it for long. It definitely hasn’t been cleaned in the year we’ve lived in our apartment and, from the looks of it, for years before that, either. I didn’t even know it existed until I read Don’t Throw It Out!
Since the length of most dishwashers’ cycles depends on how much dirt they’re sensing coming off the dishes, cleaning the filter can make them more efficient. Although many newer dishwashers have self-cleaning filters, it should be one of the first things you check if your dishes aren’t getting completely clean.
I know what some of you are thinking: Why are you using the dishwasher in the first place? Isn’t washing dishes by hand more efficient?
You could argue that with all the variables, it’s impossible to say exactly how your particular hand-washing stacks up to my particular dishwashing. But even with the benefit of the doubt given entirely to the by-hand proponents, it’s a wash, and in that case it’s much like the paper or plastic bag debate—not worth arguing about (except to say, use less of them). I’m not a big fan of handwashing dishes to begin with, so the dishwasher’s my choice. I’m just happy that my laziness is justified by facts.
Things we can do to make our dishwasher even more environmentally friendly include:
Turn off the heat dry feature. If you feel like the dishes take too long to dry this way, open the dishwasher door slightly to let the air circulate.
Turn your hot water heater down to 120 degrees if your dishwasher has its own heating element (most do).
Don’t pre-rinse. Scrape instead.
Run only full loads, but don’t overload. You want water getting to every inch of your dishes. (Seriously, I don’t know what the people in Rachel Getting Married were thinking.)
Use a phosphate-free detergent. Phosphate runoff leads to algae blooms (much like nitrogen from fertilizers).
And, by the way, federal dishwasher standards are changing in January, and Energy Star standards are changing in July 2011, so if you’re planning on buying a new dishwasher, you might want to wait for the more efficient models. Check out Consumer Reports’ eco-site Greenerchoices.org for more buying tips.
One of the first home improvements Rachel and I made when we purchased our condo here in Cambridge this spring was a solar hot water installation on our rooftop.
The system we had put in uses vacuum tubes, a newer, more efficient type of solar collector than the black box flat panels of old. As a writer covering energy and the environment in Cambridge and China, I’d spent the past three years tracing this new and exotic technology back to the factories and cities in China where they are surprisingly commonplace.
I first read about the tubes three years ago in a story in the Boston Globe. A family in Newbury, MA was using a massive installation to provide hot water and heat for their giant barn of a house. A photo that went with the story showed their installation covered in frost on a cold winter day. Somehow, despite the cold, the tubes were still kicking out 120 to 160 degree water. The secret behind vacuum tubes that allows them to work just as well in winter as summer is, just as their name suggests, a vacuum space. The diagram at the right shows how the tubes work. Sunlight passes through a clear outer glass tube and travels through an evacuated space or vacuum where all of the air has been sucked out. The sunlight passes through this vacuum and then hits an inner black pipe that absorbs the sun’s rays converting the sunlight to heat. What’s key about all of this is that whereas light rays can pass through a vacuum space, heat can not. All of the heat is therefore trapped inside by this highly efficient, transparent insulator.
After I read the story in the Globe I found out that there are thousands of factories kicking out these tubes in China and roughly 1 in 10 Chinese people use them for their hot water.
Six months after first hearing of the tubes, I toured the R&D center of one of these factories in Beijing for a story I wrote for New Scientist.
The story also led me to Rizhao, a city on the coast between Beijing and Shanghai where 99 percent of residents get their hot water from the sun. Here is a video I made from a rooftop of the city while talking with Rizhao’s mayor, Li Zhaoqian.
By the time we had a chance to buy a place of our own I was totally sold on the technology and couldn’t wait to put the tubes in on our own place. Evacuated tubes are still hard to come by in the US, however, and most of the installers I spoke with insisted they were no better than the flat panel solar collectors that had been around since the 70s. The estimates I got for flat panel installations, however, were twice the size of what I figured I could get by with using vacuum tubes. Then I found Bruce, a contractor with New England Solar Hot Water, who, like his company’s name suggests, only does solar hot water installations. Bruce and his crew had been doing vacuum tube installs for years and were stoked to hear I’d actually toured some of the factories where they get their parts.
In mid June they installed the collectors shown on the right that heat all of our domestic hot water; the water we use for showers, laundry, and in our sinks. The system is backed up by natural gas but on a sunny day like today, its unlikely we’ll need it. At 9am, with an outside temp of 43 F, our tubes are already a toasty 95 F and climbing.
