To prevent global warming from reaching catastrophic proportions, we need to slash greenhouse gas emissions. The question is how. WISE researchers have a nano-sized solution: tiny balls that trap CO₂ emissions within smokestacks before they wreak climate havoc. 

For a number of years, investigators have recognized that porous carbon can adsorb CO₂. Now a team led by Waterloo’s Zhongwei Chen has developed a way to maximize that useful property. 

The researchers began by creating nanospheres…

When the three little pigs built their houses, their top priority was protection from a huffing, puffing wolf. But according to WISE member and civil engineer John Straube, the biggest concern when it comes to building performance is actually water.

In every climate zone on Earth, houses must be designed to handle moisture, whether it’s rain on the outside, condensation on the inside or leaks in the plumbing system. 

In August, Straube shared the latest research on moisture physics at the 2018…

Blockchain can do more than drive cryptocurrency transactions, according to WISE researcher Srinivasan Keshav. The computer science professor also sees opportunity to let small-scale energy producers sell green electricity to the highest bidder.

Currently, a homeowner with a dozen photovoltaic panels on her roof has only one option for selling the electricity she produces: to the local utility at a price established by government.

But as Keshav points out, lots of companies are keen to prove…

Electricity is often generated hundreds of kilometres from where it’s consumed. (Think offshore wind farms and remote hydroelectric dams.) The most efficient and economical way to move electricity over those kinds of distances is through high-voltage direct current (HVDC) transmission lines — so-called “power superhighways.” 

However, addressing faults like voltage or current spikes and short circuits is far more difficult in an HVDC grid than in a standard AC grid, because they travel so much…

As the electricity grid ages, blackouts become more likely. Placing sensors at strategic locations along transmission lines would allow grid managers to detect faults or fluctuations before they cause major headaches. However, powering those sensors with batteries would require replacing the batteries every couple of years — an expensive proposition when you consider the labour involved. 

That makes the idea of self-powered sensors very attractive. Once installed, they would keep working, year…

The world is filled with ambient energy: stray heat, vibrations, electromagnetic fields and more that pulse all around us. Instead of letting those resources go to waste, WISE researchers are taking full advantage of them. 

In the case of a team led by Waterloo mechanical and mechatronics engineering professors Amir Khajepour and Behrad Khamesee, that means designing a self-powered sensor that taps into two different forms of freely available energy.

One is movement. Hassan Askari a PhD student…

Microgrids integrate small-scale electrical energy sources and energy storage systems into local electrical distribution grids. This modern concept facilitates the integration of renewable energy sources, such as solar and wind energy, for greener energy generation. Also, microgrids are potentially more reliable than conventional electrical distribution networks, because they can operate independently if disconnected from the main utility grid under any circumstance. As a result of their new…

To ensure nuclear power plants are running safely, operators closely scrutinize a slew of different measurements, monitoring for any signs of wear-out. Take the example of the electro-hydraulic system controlling the plant’s turbines. Operators collect weekly samples of the control fluid, looking for an uptick in acids that indicate the fluid is starting to break down.

The problem is deciphering what are the important, underlying trends and what is simply noise in the data — short-term…

In April, Waterloo became the first Canadian university to install smart charging infrastructure for electric vehicles (EVs). That’s good news for anyone on campus who wants to charge up for free. It’s even better news for the 21 WISE faculty whose research focuses on EVs.

Unlike regular chargers, these units optimize charging patterns based on demand levels and time-of-use electricity costs. They also collect a wealth of detailed data to help investigators shed light on critical issues of grid…