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March 4, 2016

International Wastewater Systems: SHARC Recovering Heat From Sewage

Originally published on CleanTechnica

We understand what’s involved in recovering renewable heat from the Earth by deployinggeothermal recovery technologies. Now it’s time to become familiar with another untapped renewable energy resource: wastewater thermal energy.

Sewage happens to be an energy source flowing beneath the surface of almost all modern cities. Not only is it plentiful, it’s free and mostly untapped.

That is, unless you’re Lynn Mueller, CEO of Canada-based International Wastewater Systems (IWS). His company has developed an innovative heat exchange system which recycles heated wastewater and returns it as a heat source.

With a payback that happens over a short time, a growing number of building developers are inquiring after the installation of IWS’s SHARC (sewage heat recovery) and Pirahana systems. IWS offers heat recovery solutions for space and domestic water heating in the winter, as well as for air conditioning systems in summer.

The company also provides engineering assistance, project feasibility assessments, cost estimates, and technical support, as well as third-party energy analysis studies to evaluate the capability of incorporating sewage heat recovery into a project.

“When you think of sewage, you think it’s just a cost for everybody involved to deal with it, but about 30% of the energy in the world ends up going down the sewer pipes every day,” he said in a January 6 interview with MidasLetter. “So our system has developed a cost-effective way to recover that energy. I like to refer to it as the world’s most ultimate renewable energy, because you really use the same energy every day: you use it, it goes down the drain, you recapture it and you use it again.”

This is not a new undertaking for IWS. In 2014, the company announced it had been selected to provide its state-of-the-art sewage heat recovery technology as a component of the Sechelt sewage treatment facility.

At the time, the LEED gold standard Wastewater Treatment Plant was slated to be be the first of its kind in North America. This video shows the SHARC unit being installed at the Sechelt Sewage plant.

Case studies show the SHARC system allows for significant energy and water savings over the life of the plant by recapturing energy that would have otherwise have been wasted and would have just gone down the drain.

About that project, Sechelt Mayor John R. Henderson said, “This will be the largest infrastructure project in the District’s history. The facility will ensure wastewater treatment capacity for Sechelt for the next 20 years (with provision to add capacity incrementally for up to 50 years more!). The facility will meet the highest Provincial standards for water quality, energy efficiency and resource recovery. It will be the first of its kind in North America, giving Sechelt opportunities to demonstrate and market to others.”

How SHARC Works

SHARC Wastewater heat recovery CanyonSpringsWP-960x344IWS’ Sewage SHARC  uses raw sewage as a medium to produce hot water, heat, and cooling for large residential and commercial buildings. The sewage is used before it gets to the plant, with all of the solids removed. It is put through a heat exchanger and utilized to produce 140°F water for domestic potable use.

Mueller said this process is 500% efficient; every dollar spent gets $5 worth of efficiency. The SHARC system will last for about 30 to 40 years, thereby becoming extremely valuable over its lifespan. In fact, he said buildings can recover the money spent on the systems in three to 10 years.

PIRANHA Retrofit System

IWS Pirhana As-featured-in-banner16-copy-960x344-copyIn addition to the SHARC, IWS also offers a retrofit version of the technology known as the PIRANHA. While the SHARC is custom-built or constructed with new buildings, Mueller said the PIRANHA is a prepackaged unit that comes in 50-kw-per-hour and 100-kw-per-hour models. This version can easily be put into a building’s mechanical room and have the sewer line looped into it. Mueller said it was originally produced to help the European market improve its energy footprint by 25 percent, something it legally must do with each update of a building.

Mueller’s background in geothermal heat pump technology helped him understand it was possible to use sewage as a source of energy instead of using holes in the ground. IWS has now been at it for five years and marketing its SHARC product for two. In the last two years, IWS has made installations across three continents—Australia, Europe, and North America.

Current Project: Gateway Theater

Richmond, Vancouver, BC: at the Gateway Theater, a 50,000-sq-ft public facility. The city had a carbon-reduction plan in place and needed to reduce the facility’s emissions by 50 tons per year. It chose to use the SHARC, thus becoming the first wastewater recovery system at a public facility in Canada.

“Levi Higgs, the city’s corporate energy manager, told HPAC Engineering that before adopting the SHARC, the city undertook a couple of studies and found there was a large amount of potential for a heat- recovery system at the Gateway. This was attributed to the large pumping system next to the theater. Mueller made a proposal that Higgs called “very cost competitive,” and the city has seen some great savings since the installation in April 2013.

““Right off the bat, we saw about a 30% reduction in our natural gas use with the SHARC system,” Higgs said. “We did some upgrades at the facility … and those coupled with the SHARC, we were able to push savings to about 45%.””

This YouTube video tour shows some of the Gateway Theater installation.

“We can produce all the domestic hot water without using a gas boiler,” Mueller said to HPAC Engineering. “Cost is comparable to a gas boiler, and it’s more efficient than the best gas boiler on the market. To give you an example, we did a roughly 200-unit building here in Vancouver, B.C. The greenhouse-gas savings amount to about 900 tons of carbon a year, just by cycling that heat from 200 units. We use heat-pump tech to move the heat.”

The infrastructure may be pricey, but the ROI is fabulous.

Images and video via IWS

September 30, 2015

Solar Light Bulb Inventor Might Make Kerosene Obsolete

It is estimated that almost 1.6 billion people on this planet live without electricity. To have light in the darkness, toxic fuels like kerosene are used to fuel lanterns. While they provide much needed light, they also pollute habitats and endanger the health of those living inside.

A Denver inventor, Stephen Katsaros, appropriately named the solar light he developed Nokero, short for “no kerosene.” The solar battery powered LED-type solar-powered bulb measures 70mm by 125mm and emits light for two to four hours, depending on the charge. Such a clean, low-cost technology might eventually make lighting fuel like kerosene obsolete. The Nokero website states that 5 percent of the average user’s income is spent of fuel for lighting. The price of a Nokero bulb and charger package is $15.

The story about this innovation has been featured on National Geographic and Denver television station, KCNC-4 , among a growing list of interested media.

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April 16, 2014

Preventing Deforestation Manages Resources & Controls Climate Change

Preventing Deforestation Manages Resources and Combats Climate Change (via Green Building Elements)

Much of what we write about for green building concerns wood and forests, an incredibly valuable renewable resource for this planet; deforestation, similar to what is occurring on the Congo Basin, must be checked and stopped. Citizens, companies and…

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October 9, 2013

Agents of Change – Newmont Ghana

Filed under: International — Glenn @ 9:48 pm

May 25, 2012

Interactive timeline on history of solar cells



Interactive Timeline on History of Solar Cells (via http://greenbuildingelements.com)

Matthew Redford has prepared an interactive timeline on the history of solar cells and thinks “this would be a good fit for your blog. I’ve based it on the Wikipedia entry for solar cells.” We agree, this is great information to have available in a user-friendly form. Thanks very much, Matt!

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February 16, 2012

24/7 Energy from AORA CSP Hybrid Tulip System

AORA hybrid Tulip CSP system provides 24/7 energy

November 10, 2009

Examples of Internet radio

Radio Newmont Ghana host, Kwame Poku Gyan

Radio Newmont Ghana host, Kwame Poku Gyan

These programs were produced for Newmont Mining in Ghana and were run on the company’s website:

http://newmontghana.com/media_preview/radio_newmont_ghana.html

This is a good way to deliver meaningful and timely information quickly — either via website or blog — while keeping production expenses low.

This methodology also has great promise for the many new mobile devices like smart phones, Kindles, etc. Drawbacks: if you want to spice up your production with visuals and the like, costs usually increase and the number of receiving devices that can play your work shrink.

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