Annually, around 50 million tonnes of electronic wastes is produced worldwide which contains valuable metals such as gold, copper, silver and palladium. Due to the lack of a suitable recycling technology, more than 80% of these wastes end up in landfills. The economic driving force for e-waste recycling has been recovery of precious metals, especially gold, in which more than 80% of the total value is attributed to gold alone. The current industrial processes for recovery of precious metals from electronic scraps are energy intensive, expensive, time consuming, and non-efficient.
Human activity in PEI contributes to over 90% of nitrates in island waterways. These nitrates are responsible for the growth of plants and algae including sea lettuce that chokes ponds and waterways, discolor water and create an anoxic event, which is harmful to the marine ecosystem. The proposed research investigates an integrated process for the conversion of sea lettuce into hydrochar and biogas with recycling of nutrients that could justify the harvesting of sea lettuce.
The West Bolton SNAP project will test methods for increasing the number of suburban households undertaking home energy retrofits in a neighbourhood of Caledon, Ontario with the aim of reducing residential energy consumption and the resulting GHG emissions. The Program will utilize locally targeted marketing, community events, and face-to-face Home Retrofit Consultations to engage households in West Bolton.
Energy consumption of a net zero energy home (NZEH) equipped with high efficiency natural gas fired furnace and an electrical air source heat pump will be monitored for a period of 12 months. The mechanical system of the house is designed to switch between these two sources of energy based on outdoor temperature. Based on current settings, heat pump works during milder/warmer weather condition and when temperature reaches below a certain point, system switches to furnace which works more efficiently in cold weather.
The last few years have seen a tremendous increase of the collection and use of LiDAR (Light Detection and Ranging) data for 3D modeling of cities, forest surveys and autonomous driving. In the context of 3D cities, buildings are reconstructed separately, sometimes with the help of aerial images. The accuracy assessment of these 3D models is not straightforward. However, end-point users need to know how reliable the models are for using them for tasks such as roofing quotes and solar installations design.
Hydrogen fuel cells are a promising alternative to meeting todays transportation demands. Longer lasting and more robust fuel cells are essential for commercial applications. A common issue with the longevity of a fuel cell stack is the tolerance to repeated start-up shutdown cycles. During these cycles, the fuel cell can become starved of fuel due to blockages in the channels. Without fuel to react, the fuel cell will begin to break down the carbon supports causing catastrophic cell failure.
Meeting the Paris Climate Accord will require $53 trillion invested towards low-carbon infrastructures by 2035. To accelerate domestic investment in renewable energy and energy efficiency, dozens of Green Investment Banks have been developed in recent years seeking to leverage public spending with funds from institutional investors, such as pension funds, insurance companies, and private equity firms.
Enhancing the current and power density in polymer electrolyte membrane fuel cells (PEMFCs) is one of the main challenges to their large-scale commercialization and hence in tune with the pending needs of the PEMFC industry. The volumetric power density in PEMFC stacks is strongly affected by the flow field plates due to their critical impact on the reactants distribution over the electrodes and their bulky size. In the proposed research, baffle-type parallel-channel cathode, anode and cooling flow field plates are designed with a small thickness.
Canadas coastal regions are an excellent source of marine renewable energy. These regions are also popular with marine mammals, providing good feeding opportunities. However little is known about how marine mammals will be affected by tidal energy developments. Concerns include the impacts of sound on animals ability to find food and navigate, the indirect effects of changes in prey distribution and abundance, and the direct impacts of collision with tidal energy structures in the water column.
Electrical power generation based on wind energy has been one of the fastest growing renewable energy sources. An important area of research in wind energy is to find different ways to improve the power reliability of systems. Modeling wind turbine power curve using past data is often used as an efficient way to use empirical power curve instead of manufacturer company power curve.
As wind-power data are often so noisy, fitted wind turbine power curves could be very different from the theoretical ones that are provided by manufacturers.