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This case study focuses on the use of hydrogen in a range of applications, developing the following techniques:
Demonstrating impact in the commercial application of the techniques in the energy, environment and chemical industries; resulting in commercially viable processes and products, generating economic benefit.
The adoption of hydrogen and fuel cell systems provides one solution to fossil fuel depletion, security of energy supplies and sustainability concerns. However, safety is a key technological barrier to the hydrogen economy. The technological impact of this case study is the adoption of research outcomes, from work undertaken by the Hydrogen Safety Engineering and Research centre (HySAFER), Built Environment Research Institute into international regulations, codes, and standards (namely Commission Regulation (EU) No.406/2010, and the international ISO/TR15916), and development of novel safety strategies, guidance, protocols, and engineering solutions supported by significant external research funding.
The underpinning research involved modelling the diffusion of hydrogen on silicon surfaces, and the electronic structure of dopant atoms on silicon surfaces. This data was used to inform, guide and develop the atomically precise manufacturing processes of Zyvex Labs. These processes remove hydrogen atoms from a silicon surface to create patterns with atomic precision for later overgrowth. As a result of the UCL research, Zyvex Labs has already obtained funding of $14 million, several jobs have been created, and at least two products are being brought to market.
Aircraft icing is a significant factor in many aircraft accidents and incidents. Ice accretion on the wings has adverse aerodynamic effects, such as loss of lift and control, and ice can also block inlets into key flight sensors. Work by Richard Purvis and his Research Associate, Peter Hicks at UEA, in collaboration with AeroTex UK and QinetiQ, led to better understanding of how the impacts and splashing of water droplets influence the ice that forms on aircraft wings. This led to improved computer prediction codes, which are used by industry to improve design and help satisfy certification requirements.
By modelling the formation of micro-bubbles and the flows induced by them, researchers at the University of Cambridge Department of Applied Mathematics and Theoretical Physics developed a new, low-cost nozzle design that could be retrofitted to existing Dissolved Air Flotation (DAF) systems. This new design dramatically improved the performance of DAF systems, used by the water industry for the production of drinking water. Specifically, this research has enabled a substantial increase in throughput and effectiveness of the flotation process, whilst simultaneously providing a dramatic decrease in the energy requirement.
A small, battery-powered device for oxygen generation and distribution (Natrox™), has been developed that, with air as input, can supply humidified oxygen evenly to wounds, such as ulcers, surgical wounds and burns, allowing the patient to be treated in a discrete efficient way without interfering with their lifestyle. With conventional approaches, oxygen can be supplied to hospital patients with ulcers only via gas bottles or piped oxygen, with the limb or body being enclosed in a plastic bag. Many successful trials of the Natrox™ device have been performed, initiating considerable interest, leading to the manufacturing and distribution of the device by InotecAMD Ltd, a University of Cambridge spin-out.
The UCL Department of Chemistry has for many years run a far-reaching programme of outreach and public engagement that has deep roots in the department's research programme. Its schools outreach work has promoted chemistry and science among secondary school children, while contributions to blogs, newspapers, radio, and television have engaged diverse audiences from primary school children to the elderly. Millions of people have viewed television contributions, while tens of thousands have been reached in theatres and science fairs, with positive reviews and feedback confirming a stimulation of public interest in, and understanding of, chemistry.
New characterisation tools for natural organic matter (NOM) in drinking water are now used as standard practice within water companies such as Severn Trent Water, United Utilities and Yorkshire Water. The tools inform decisions, and help develop strategic plans on catchment management, source selection, treatment optimisation, and disinfection practice. Water companies experienced difficulties in treating high levels of NOM. Cranfield created a novel characterisation toolkit to measure NOM for its electrical charge and hydrophobicity. Also, new techniques for measuring aggregate properties and emerging disinfection by-products have provided a comprehensive analysis. Two novel treatment technologies are currently marketed. These technologies have raised international interest, resulting in industrial development in Australia.
NASA's Cassini mission to Saturn's icy moon Enceladus in 2009-10 investigated the presence of explosive ice geysers towering over the south pole of the planet. The geysers consist of vapour and ice particles which rise up to 1,000 kilometres above Enceladus' surface. The source of these jets has been hotly contested. Cassini's mission was to fly as close as possible to the plumes to search for evidence of sub-surface water containing the building blocks of life.
Mathematical modelling, conducted at Leicester, allowed the mission designers to calculate the possibility of the Cassini Spacecraft colliding with dust from the Enceladus jets, with potentially catastrophic results, enabling the craft to be manoeuvred as close as safely possible to the moon's surface to capture the images it required.
The mission, with an estimated $3.26 billion cost, was successful — gathering evidence that the research team's hypothesis of a subterranean sea on Enceladus was correct — a revelation which has inspired public interest around the world.
Experimental research and computer modelling in the School of Mechanical Engineering have been applied by engine and oil companies to reduce fuel consumption and noxious emissions. Studies into high pressure explosions and burn rates have helped industry improve engine efficiencies by up to 30% and contributed to the development of much improved fuels. These new products perform better, are less environmentally damaging and have generated new company revenues. Research into burn rates, detonations, and large jet-flames has also informed health and safety investigations, particularly the UK Government Inquiry into the Buncefield explosion, providing calculations and explanations of the blast, and recommendations on future safety controls.