Monday, November 23, 2009

world building of the year 2009

For those of you who don't yet know it, the best building completed in 2009 in the world has been voted for, and it is not only "green", but it is right here in SA: the Mapungubwe Interpretation Center.












Designed by Peter Rich Architects, a South African firm which strives to promote "a truly sustainable African architecture, enthusiastically engaging in often long and complex political and consultative processes to ensure that the legacies of the projects last way beyond the buildings completion."

The Mapungubwe Interpretation Centre is situated at the convergence of the Limpopo and Shashe Rivers in the Mapungubwe National Park. This is the site of an ancient civilization linked to the Great Zimbabwe trading culture. This poverty relief project used ecological methods and materials.

"The project’s agenda extends beyond the presentation of the area’s history to awaken an understanding of the vulnerability of the local ecology. These objectives are manifested in the construction process of the Centre in which unemployed local people were trained in the manufacture of stabilized earth tiles and in building the vaulting."




I hope to see the building one day, but in the mean time, will have to admire the photographs...

Tuesday, September 29, 2009

Greenwashing!

A recent report by North American consulting firm TerraChoice Environmental Marketing has found that just 2% of self proclaimed green products make completely legitimate claims on their labels. The other 98% commit "greenwashing" sins, that is they mislead consumers about the environmental benefits of a product or the practices of a company.

Products in stores in the United States, Canada, Britain, and Australia were surveyed, 1,018 in total - everything from toothpaste to caulking to printers

“The good news is that the growing availability of green products shows that consumers are demanding more environmentally responsible choices and that marketers and manufacturers are listening”, said TerraChoice Chief Executive Scott McDougall.

“The bad news is that TerraChoice’s survey of 2,219 consumer products in Canada and the U.S. shows that 98 percent committed at least one sin of greenwashing and that some marketers are exploiting consumers’ demand for third-party certification by creating fake labels or false suggestions of third-party endorsement.”

TerraChoice created the "seven sins" of greenwashing:

  • Sin of the Hidden Trade-off: A claim suggesting that a product is ‘green’ based on a narrow set of attributes without attention to other important environmental issues. Paper, for example, is not necessarily environmentally-preferable just because it comes from a sustainably-harvested forest. Other important environmental issues in the paper-making process, such as greenhouse gas emissions, or chlorine use in bleaching may be equally important.

A South African example: consumers are being urged to switch from incandescent lamps to the new low-energy equivalents (CFLs), but no effort has been made to educate or advise them of the mercury content or of the long-term danger these lamps pose to communities when dumped. Not one of the manufacturers, suppliers or retailers has made any effort to create a safe disposal facility for these lamps.

  • Sin of No Proof: An environmental claim that cannot be substantiated by easily accessible supporting information or by a reliable third-party certification. Common examples are facial tissues or toilet tissue products that claim various percentages of post-consumer recycled content without providing evidence.

As there is no legislation controlling "green industry", many SA businesses and products are claiming environmental management compliance that can't be proved.
  • Sin of Vagueness: A claim that is so poorly defined or broad that its real meaning is likely to be misunderstood by the consumer. ‘All-natural’ is an example. Arsenic, uranium, mercury, and formaldehyde are all naturally occurring, and poisonous. ‘All natural’ isn’t necessarily ‘green’.

Vague claims such as using the terms "organic", "environmentally friendly" and even "eco-safe" tend to give the impression that the product is safe and Earth-friendly when in fact it is not.
  • Sin of Worshipping False Labels: A product that, through either words or images, gives the impression of third-party endorsement where no such endorsement exists; fake labels, in other words.

  • Sin of Irrelevance: An environmental claim that may be truthful but is unimportant or unhelpful for consumers seeking environmentally preferable products. ‘CFC-free’ is a common example, since it is a frequent claim despite the fact that CFCs are banned by law. An environmental claim that may be truthful but is unimportant or unhelpful for consumers seeking environmentally preferable products. ‘CFC-free’ is a common example, since it is a frequent claim despite the fact that CFCs are banned by law.

  • Sin of Lesser of Two Evils: A claim that may be true within the product category, but that risks distracting the consumer from the greater environmental impacts of the category as a whole. Organic cigarettes could be an example of this Sin, as might the fuel-efficient sport-utility vehicle.

  • Sin of Fibbing: Environmental claims that are simply false. The most common examples were products falsely claiming to be Energy Star certified or registered.

Here in South Africa, it has taken us a while, but us consumers are finally realising the importance of selecting products and services that are environmentally friendly and have less impact on the Earth. We are still some way behind United States, Canada, Britain, and Australia, so it is not yet easy to be "green" or environmentally aware, but there are increasing numbers of people who will choose a product or even pay that little extra because it claims to be environmentally friendly.

Who should be policing "greenwashing"? The advertising industry, government, business chambers?












Sources: TerraChoice ; The Seven Sins of Greenwashing ; Mail & Guardian ; Earthfirst.com


Friday, August 7, 2009

Biomimicry

"Biomimicry is the process of learning from and then emulating Nature’s genius to create more sustainable designs. It’s studying a leaf to invent a better solar cell or an electric eel to make a better battery."

Organisms and ecosystems face the same challenges that humans do,but instead of destroying the environment in the pursuit of solutions, they meet those challenges sustainably. Blueprints, recipes and strategies for how to live gracefully exist in the more than 30 million species with
which we cohabit our earth.

“Biomimicry introduces an era based not on what we can extract from the natural world, but what we can learn from it.” - Janine Benyus, the world renowned author of Biomimicry: Innovation Inspired by Nature and the Chair of the Biomimicry Institute


A few examples of Biomimicry:
  • Fabric that gets its colour from structure—like the feathers of a peacock—rather than harsh chemical dyes.
  • An efficient waste water treatment plant inspired by the way human kidneys process waste.
  • Fans and propellers modelled after a natural logarithmic spiral that use 30-70% less energy.
In terms of Architecture, an example of Biomimicry would be learning from termites how to create sustainable buildings. When it come to termites & buildings, the first thing that comes to mind is that they destroy buildings, not help design them. However, the Eastgate Building, an office complex in Harare, Zimbabwe, designed by Architect Mick Pearce along with Arup Associates (Engineers), has an air conditioning system modelled on the self-cooling mounds of termites. The termites maintain the temperature inside their nest to within one degree, day and night (while the temperatures outside range from 3°C to 42°C). The Eastgate Building uses 90% percent less energy for ventilation than conventional buildings its size, and has already saved the building owners over $3.5 million dollars in air conditioning costs.












Further examples:
Fennell Residence - a floating home with a sweeping roof evocative of a nautilus shell
Architect:
Location: Portland

Designed: 2001
Completed: 2005









Quadracci Pavilion - opens and closes throughout the day like the wings of a butterfly, or the unfurling of a flower.
Architect: Santiago Calatrava

Location: Milwaukee
Completed: 2001











And probably the most famous recent example:
Beijing National "Bird's Nest" Stadium - inspired by a bird’s nest;
Architect: Herzog & de Meuron
Location: Beijing
Designed: 2003
Completed: 2008


Monday, July 27, 2009

Call for Action on Building and Climate Change

The recent (3rd to 6th March) 2009 Climate Change Response Policy Development Summit, held in Midrand, included a “Call for Action” in the building industry.

Few people realise that there is a large volume of research that shows that the buildings we live and work in, are a huge contributor to the global environmental crisis.

“Buildings and their construction account for nearly half of all the greenhouse gas emissions and energy consumed in this country (USA) each year. Globally, the percentage is even greater.”

South Africa, is not very different, with the buildings we occupy being responsible for approximately 22% of total greenhouse gas emissions in SA, and a further 5% for the production of building materials and 5% for the construction of the buildings. That’s a total of 32% of SA’s greenhouse gas emissions. The building industry therefore has the greatest potential of any industrial sector for delivering significant emission reductions. Add to this, the opportunity to create “green jobs”, the opportunity to start generating energy rather than just using it and the potential cost savings (as energy prices continue to skyrocket).

The building industry stakeholders who attended the Climate Change Response Policy Development Summit, made a call for action. This included that the National Climate Change Response Policy prioritising the building sector as fundamental to achieving significant greenhouse gas emission reductions, as well as providing support and investment incentives for building projects that reduce or eliminate emissions and improve the energy efficiency in existing buildings and new construction.

In order to achieve this, the building industry want to reform the Cleaner Development Mechanism to encourage investment, and want a mandate to develop specific measures for the building sector to achieve the above goals.

In short, the building industry realises that they have a major role to play in the environmental crisis and wants to clean up its act, but requires the platform to do so.

Sunday, July 12, 2009

Some Inspiration: Disneynature's "Oceans"

If you need convincing as to the need for protecting the environment, take a quick look at Disney's upcoming movie in celebration of earthday 2010:



This follows on from the recently released movie "earth":


Enjoy!

Friday, June 26, 2009

Top 10 Green Building Products of 2009

Over the last 4 years, business magazine, Sustainable Industries releases Top 10 Green Building Products of the year. Although based in the USA, it is always interesting to see what global advancements are being made that will improve sustainable design and construction. Unfortunately most of these products are not currently available in South Africa (we make note of those that are), but hopefully will be in the near future. If anyone is aware that these products are available, please let us know.

Sustainable Industries basis its selections on environmental performance, market impact, innovation, design aesthetic, value, and compatibility with the US Green Building Council's LEED rating system. Here are the top 10 products for 2009:

Hallowell International's Acadia Combined Heating and Cooling System - a super-efficient system that can save up to 70% on energy costs (dependending on the outside temperature).The Acadia is a heat рumр that extracts heat from outdoor air and distributes it through ductwork, much like conve
ntional heat рumрs.














ec-H20 - is a technology that requires no chemicals to convert tap water into a cleaning solution to clean almost any surface of almost any substance. Scrubbers with ec-H20 use 70% less water than others and use no harsh chemicals.











InSpire Wall - is a simple, elegant, transpired solar collector and fresh air heating system that uses the power of the sun to heat outdoor air before sending it indoors, while boosting the indoor air quality. This can reduce heating costs by up to R400/m2 (per year).














Kama EEBS Structural Systems - is a structural wall framing system made by kam
a Energy Efficient Building Systems Inc. Made of light gauge metal stud framing with expanded polystyrene insulation, eliminates thermal bridging and creates a tight building envelope.









Plyboo Pure Bamboo Plywood - Although there are some similar products available here in SA (such as Oriental Bamboo), Smith & Fong obtained the first FSC (Forest Stewardship Council) certification for bamboo in the world.












RainTube - this is a rain gutter filter made of 100% post-consumer high-density polyethylene (plastic commonly used in consumer products). GLI Systems Inc also developed a "Post-Use Recovery Plan" the product. It's perfect for use in a rainwater collection system.












Separett Villa
- is a waterless composting toilet that separates the solids from the liquids by diverting the urine
and keeping solids separate from liquids, reducing odour and making it possible to reuse waste and urine for composting and fertilizing. This is ideal for use where no plumbing exists. (Similar South African systems:
africaSanitation and ECOSAN),














Serious Windows - these efficient windows which have the potential to allow for the elimination of a building’s
heating system, have a full-frame R value of 5-11, which can help cut energy bills by up to 50% per month.

















Solatube Daylighting Systems - this technology captures sunlight and redirects it through an adjustable tube into spaces where there is no natural light. Daylight is linked to higher worker productivity, decreased absenteeism and better retail sales. (Available in SA)









Eleek Your Old Light Fixture - Re-use & recycle! Eleek provides a lighting restoration service to restore and reuse old fixtures. Every piece of a light fixture is taken apart, repaired and restored including updating wiring to comply with modern codes and standards and a new lamp base is installed so it works with energy-efficient lamps such as CFLs (Compact Fluorescent Lamps) and LED's (Light-emitting diode). As it is not a product, this business model could easily be set up here in South Africa.


Monday, June 8, 2009

Green Roof - your home.

Introducing a "green roof" to the design of your new home (or alteration) is comparable to putting back the original vegetation and ecosystem that your home occupies.
























images courtesy of www.trendir.com


By definition, a "green roof" is a roof that is partially or completely covered with vegetation and soil. Container gardens (plants are in pots) are not generally considered to be true green roofs, but do serve similar purposes. Aside
from being aesthetically pleasing, there are numerous advantages to having a green roof, the biggest of which (in our opinion) is the preservation of habitat and biodiversity. This is particularly true, if indigenous planting is used that resembles the original vegetation of the area, which in turn, will encourage the indigenous insect and bird life to continue in the area.

However, over and above the sound ecological reasons for having a green roof, there are a number of benefits to the property owner as well:
  • Temperature & insulation - not only does a green roof assist in controlling the heat gains and losses of its specific building by reducing heating and cooling loads, but will also contribute to mitigating the 'Urban Heat Island Effect' (the difference in temperature between a city and the surrounding countryside), in the summer.
  • Sound insulation - Sound waves that are produced by machinery, traffic or air-planes can be absorbed, reflected or deflected.
  • Rain water - rather than large volumes of water running into the municipal stormwater drains (if not captured on site in storage tanks), a green roof will reduce the amount of runoff and delay the time at which runoff occurs. This results in decreased loads on sewer systems at peak flow periods. In addition, a green roof will retain water by storing it in the substrate and then will be used by the plants and finally returned to the atmosphere through transpiration and evaporation.
  • Improved air quality & carbon dioxide/oxygen exchange - a green roof will filter the air moving across it of airborne particulates and through the process of photosynthesis convert carbon dioxide, water and sunlight/energy into oxygen and glucose.
The more in-direct / economic benefits include:
  • Protection of the roof resulting in a longer lifespan and decreased maintenance and replacement costs (it is estimated that green roofs will last up to twice as long as conventional roofs).
  • Savings on energy heating and cooling costs.
There are however, a few disadvantages to consider. With regards to the design and construction of a green roof, existing buildings may not always be able to be retrofitted with a green roof because of the weight of the soil and vegetation. In addition, a green roof places high demands on the waterproofing system because not only is water retained on the roof (in the soil etc.), but there is the possibility of roots penetrating the waterproof membrane. Installing suitable waterproofing systems and root barriers is essential and can increase the cost.

Finally, the construction / landscaping cost of a green roof can vary depending on the type of roof, structure of the building etc., and what plants are grown on the roof. And although a conventional roof may only require maintenance through painting/waterproofing every few years, a green roof, like any garden, requires a little more TLC.













image courtesy of wikipedia.org


















images courtesy of www.dornob.com

Monday, May 18, 2009

A “green house” can be modern.

At econic we strongly believe that a green or sustainable building does not have to be a "hippie" shack. To prove our point, we have below a few buildings that are modern, sophisticated, luxurious AND "green"! To start with, take a look at these buildings - constructed out of rammed earth!

Homehill Winery - Tasmania; Australia







Carlton & United Breweries - Yatala (Brisbane); Australia








The above images are courtesy of Ramed Earth.

To date, neither South Africa nor Australia have established their rating tools for single residential buildings (homes). However, the US Green Building Council's LEED rating system does. The following houses are either already LEED Platinum (LEED's highest rating award) rated or awaiting final certification. US based blog Jetson Green has these a more...

Georgia RainShine House

























To achieve its "Plainium" status, The RainShine House included the following:

· +/-1900 litre water reclamation tanks;· Butterfly roof designed to collect rainwater;

· Locally-sourced, 100% recycled steel framing roof;
· Water-based insulation materials;
· Reclaimed heart-pine flooring;
· Energy recovery ventilator (for tight homes);
· Low solar heat gain coefficient windows;

· Abundant interior natural light;
· LED lighting system;
· Geothermal heat pump;

· 3.1 kW rooftop, photovoltaic system; and
· Deciduous plantings to provide efficiency benefits.


Margarido House























· LED lighting

· Energy Star cool roof
· In floor hydronic (water based) heating system
· Solar electric power
· Solar thermal hot water
· Smart house automation
· Energy efficient appliances
· Water reclamation tanks
· Permeable paving
· Recycled concrete and glass counters
· Locally sourced and sustainable products
· Interior air quality management system
· Low water/drought tolerant landscaping
· Zero VOC paints

Celadon Eco Townhomes





















·
approximately 30-40% more energy efficient than standard homes
· stormwater retention
· indigenous, drought-tolerant landscaping
· expected to save about 1,5mil litres of water annually.
· high-efficiency HVAC system,
· tankless water heater,
· skylights and solar tubes,
· light-reflective roof,
· sub-metering,
· energy-efficient appliances,
· low-VOC paints and materials, etc.

There are plenty more examples internationally, and although it may be some time before the Green Building Council of South Africa has a Green Star rating tool for homes, econic hopes that we will be building homes like these sooner rather than later.

Sunday, May 10, 2009

geothermal / ground-source heat pumps

The U.S. Environmental Protection Agency (EPA) called ground-source heat pumps the most energy-efficient, environmentally clean, and cost-effective space conditioning systems available. Heat pumps offer significant emission reductions potential, particularly where they are used for both heating and cooling and where the electricity is produced from renewable resources.

















image courtesy of greenbuilder.com


A geothermal heat pump system (also known as a GeoExchange system) is a central heating and/or air conditioning system that actively pumps heat to or from the shallow ground, using the earth as either a source of heat in the winter, or as a coolant in the summer. In typical systems, duct fans distribute the warm o/r cool air to various rooms within the building in the same manner as a conventional central heating or air-con system would).


The heart of the heat pump is a loop of refrigerant pumped through the “ground loop”, or more specifically, “vapour-compression refrigeration tubes” that moves heat either into or out of the ground. Working much like a refrigerator the system uses the heat pump to force the transfer of heat: capturing heat from a cool area and transferring it to a warm area, or they can enhance the natural flow of heat: from a warm area to a cool one. Heat energy always flows from areas of higher temperature to areas of lower temperature.

Geothermal heat pump systems are so efficient because underground temperatures are relatively stable through the year . The shallow ground temperature is warmer than the air above during the winter and cooler than the air in the summer. A ground-source heat pump extracts that ground heat in the winter (heating) and exhausts heat back into the ground in the summer (cooling).


In terms of residential use, home-owners who use GeoExchange systems rating them highly because of their ability to deliver comfortably warm air, even on the coldest winter days, and because of their very very low operating costs. In addition, once installed, they require little maintenance or attention. According to the U.S. Environmental Protection Agency, GeoExchange systems save home-owners 30-70 percent in heating costs, and 20-50 percent in cooling costs, compared to conventional systems.


In cooler climates, such as Europe & North America Geothermal systems are used predominantly for heating. Here in South Africa, heating can be useful when the correct conditions exist; however, the most use is the ability to reduce air-
conditioning loads during the day when the air is warm and the ground is cool.

There are numerous options as to the types and size of systems, dependant on the size of the building, availability of land and cost. To compare these various options have a look at geoexchange.org

Friday, April 24, 2009

Recycling at Home- How hard is it?

Bad habits are hard to break. Simply chucking all your garbage into one big bag and putting it out for the municipal collection is nothing more than a bad habit. But with a little bit of organisation, and very little cost, you can easily set up your home or office to start recycling.

To start with, lets look at what you can recycle (care of Clearer Conscience):
PRODUCTCODEEXAMPLENO GOOD
PLASTIC1 PETBottles
(e.g. soft drinks)
Any plastic labeled 3 or 7
Look for number or abbreviation by recycle logo 2
PE-HD
Household
(e.g. detergents, shampoo)
Cling wrap, florist wrap
4
PE-LD
Film
(e.g. frozen veg, appliances)
5
PP
Containers
(ice cream, marg, feta, food trays)
6Polystyrene/Styrofoam
Tetrapaks
(long life milk cartons)
GLASS Jars, bottlesHeavy glass, e.g. windscreens, window panes
PAPER Newspapers, junk mail, office paper, exercise books, etc
Magazines & books: please keep separate so these can be sold through charity shops
Phone directories
CARDBOARD Boxes, toilet rolls, cereal boxes, etcWax lined boxes (juice, fruit, etc)
METAL Tins, cans
OTHER - BY PRIOR ARRANGEMENT Clothes, bric-a-brac
(must be in good condition so can be donated to charity shops)
Broken tiles & crockery
Plants, garden accessories
Computer cartridges
N.B. Please rinse food containers.
No need to rinse bottles.
No disposable nappies;
no foodstuffs

In addition to the above, Urban Sprout, recently reported that now even tetra pak can be recycled in Cape Town.

Now that you know what to set aside/ separate for recycling, all you need is a couple of containers to put it in and then have it collected (or drop it off yourself). To separate the recycling, in our home we've dedicated one small cupboard and put five reasonably sized containers (a mix of simple conventional bins and/or big tupperwares) - paper; plastic; tins; glass and general un-recyclabe rubbish (we also have a another tupaware for fresh produce to go to our worm farm). It take up little space and is just as convienient as throwing away rubbish the old (bad habbit) way - no mess, no fuss.

In our storeroom, we have seperate bins (boxes) for each of the items and twice a week we take from the kitchen cupboard and into the store room - the same as you would remove your
rubbish the old (bad habbit) way - no difference here.

Instead of putting our two or three bags for municple collection every week, we put out one small one. And finally, once a month, we put out our four bags for recycling collection. Its that simple, and costs very little more (approximately R80 per month for Clearer Consience to collect), but makes a huge differnce...

The City of Cape Town says waste-to-landfill amounts increase by 7% annually even though the net population increase is only 2% over the same period. They're running out of landfill space! And asside from the space issue, is the well documented need to stop deforestation, and reduce global consuption (industy generating CO2's etc).

Recycling is one of the easiest ways to contribute to the fight against global warming and the global culture of waste. DO IT TODAY!

Google "Recycling+your town or city", or look at Urban Sprout's recycling directory for more info.

Friday, April 17, 2009

Concrete / Cement - Can it be a "Green" material?

Regardless of the size and type of building, it is fairly hard to build conventionally without the use of CONCRETE or CEMENT. Unless of course you are building straw bale, adobe or similar. But even then, foundations may still be cast in concrete, or the walls plastered using a cement based product. So, it is useful to look at concrete or cement and ask – can it be a “green” material?

Its durable nature and versatile applications have made its usage ever-present throughout the world. However it is extremely energy intensive to make and transport, and produces a significant amount of the world’s greenhouse gas emissions. According to the World Business Council for Sustainable Development, concrete is the most widely used substance on Earth apart from water.

“Buildings and their construction account for nearly half of all the greenhouse gas emissions and energy consumed in this country (USA) each year. Globally, the percentage is even greater.”

It is estimated that cement manufacturing produces about 5% of global CO2 emissions, and 3% of global emissions of all greenhouse gases. However, concrete manufactures say that as the cement ages, it reabsorbs all the CO2 released during the manufacturing process – but this takes hundreds of years.

So what is “the green advantage” of concrete, and is it enough to negate the CO2 emissions?

  • For one, it is extremely durable. Buildings constructed of concrete last lifetimes, with just the less durable finishes and fittings having to be replaced.
  • It can almost always be locally sourced. So no green house gas omissions from shipping the material around the world.
  • It can be recycled. Either as fill or road base, or reused as the aggregates in new concrete. However, because its chemical properties change over time and with each processing, this is limited.
  • Exterior concrete walls can be energy-efficient in climates that have daily temperature fluctuations. It creates thermal mass that can store warmth or cold, reducing indoor temperature fluctuation.
  • Potential new manufacturing techniques have improved the CO2 emissions. However the cost of these techniques remain to be seen and are unlikely to be available in developing countries for some time to come.
Despite some advantages, at the end of the day, cement & concrete are too big a contributor to green house gas emissions to be able to argue that this material may be “green”. Maybe in the future the technology will become widely available to manufacture this incredible material in a manner that will have a negative carbon footprint. It is possible, just ask Vinod Khosla

Thursday, April 9, 2009

Going Green – where to start (part 2 of 2)

The previous post: Where to Start? – Energy! looked at the initial steps that could be taken when tackling the energy problem, as well as the use of technology to achieve the goal of reducing our reliance on coal based energy. In this post, we look at buildings becoming self sufficient through the production of renewable energy. A subject broad enough to warrant a post of its own.

On-site renewable energy options include photovoltaic systems, cogeneration (used in larger buildings), wind power, geothermal electric systems (using the Earth’s steam to make electricity), low-impact hydroelectric power systems and biofuel-based electrical systems (not easily applicable to buildings - more suitable to farms etc.) Of the above options, 3 are most easily applicable to residential projects:

  1. The most commonly known of the above options is photovoltaic (solar power) systems which use the suns rays to generate energy. Photovoltaic is also the most user friendly / cost effective application for home use. Currently, solar power systems still require a fairly large initial investment (approximately R250 – R300,000 for an average size home to be independent of the grid) and the systems are not that efficient. But, the science is quickly improving and costs are continuing to come down. Conversely as electricity prices continue to increase, the pay-back period will get better. In warmer climates, where the highest demand usually occurs when the sun is at its hottest (airconditioning etc.), photovoltaics are helpful in reducing power usage.
  2. Co-generation uses one fuel (gas, oil, or diesel) to produce two outputs—electricity and heat. But the plant costs make this feasible for large buildings only, and therefore not in keeping with this blogs target audience.
  3. Wind power generates large amounts of electricity at low cost and with zero emissions. Wind turbines can be used alone (with their own battery storage system), or as part of a combination system, in which their output is combined with that of solar panels etc. Combining systems is useful for winter backup where cloudy weather and windy conditions occur simultaneously. Most importantly, before purchasing a wind power system it must be established whether or not your site has enough wind to generate the power to warrant the cost – as with solar power, the technology is improving rapidly, but can still be costly.
Generally speaking, each project is unique in terms of location, budget and design etc. and if you are serious about reducing your reliance on coal based (grid supplied) energy , then you need to consider which options will best suit your specific requirements. For this, it is worth getting professional advice and assistance.

It is also worth bearing in mind that like many European cities, Cape Town will soon be offering "Green Electricity" as an alterantive source for your energy supply. We'll bring you more details on this soon.

Wednesday, April 8, 2009

A little humor care of earthfirst.com



A little humor in difficult times - maybe the world economic
collapse is happening for a reason?
Care of
earthfirst.com

Thursday, April 2, 2009

Where to Start? – Energy!

Energy!
Particularly in SA, due to our dependence on coal fired electricity generation, and rapidly rising energy costs. Fast evolving "green" technologies offer plenty of sustainable solutions to help building owners and the environment. Added to this, carbon caps (mandatory limits on carbon dioxide emissions)which are not in effect yet, will in all likelihood be imposed upon business and industry in the near future.


So, where to start?
With an Energy Analysis: Before considering costly exercise of generating your own energy on site, optimize energy usage to reduce consumption and costs. A preliminary energy audit are cheap or free, and can even be done online at the Energy Star Web site. While this is a US based website, it will give you some ideas as to how to reduce your energy consumption. A more detailed analysis might cost a little, but is necessary to determine the cost benefit and payback time of various options.

Next step?
Having established where your building is using energy, you can look for solutions to reduce consumption. This is particularly true for heating and cooling, which can be done at a minimal cost. If you are running under-floor heating (or any other types of heating) or air-conditioning, consider just turning the thermostat up or down (as the case may be) by just a couple of degrees. The change to the feel of the room will be negligible, but the savings considerable. Taking things further, turn off systems when you leave a room and make sure they are room specific (not serving an entire building at once). New technology includes motion control sensors, which sense when people are in a room and adjust lighting and air systems accordingly. The other common issue is lighting - older light fittings produces more heat and use more energy. By changing lights, building owners can save money on cooling and general energy consumption.

New buildings - Energy efficient technologies.
In new buildings, installing new technology usually costs more (at least initially – depending on how quickly our electricity prices increase), but it is easier to install when a building is under construction, rather than as a retro-fit (in an existing building). Included in this, is building automation. Although relatively costly, a fully automated building is able to run very efficiently, by turning lights, heating, cooling on and off when specific areas are occupied or when temperatures do not meet the required levels. Further to this, technology such as “energy recovery systems”, “thermal storage” and “geothermal heat pumps” are continuing to improve to offer efficient alternatives to heating and cooling for all building types and sizes.

This post: Where to Start? – Energy! Will be continued in part two, where we look at buildings becoming self sufficient through the production of renewable energy.

welcome to econic's blog

this blog is an extension of our business :







a way for us to communicate what we are thinking, keep ourselves and our clients up to date with the rapidly growing environmental industry.


econic is passionate about the environment. We aim to offer both private & corporate clients advice, design and management services that will reduce your impact on the environment. Our services include, but are not limited to:

residential

commercial /corporate

events / functions

econic offers a number of service package options, but in general, these include:

- consultation regarding all "green" aspects possible/required by client for an existing / new building or event;
- design for new or renovated buildings incorporating green aspects as required
- project management of implementation of "green" aspects during the building process
- Green Star Rating service (where applicable)