Articles and Blogs

Darren F. Kavanagh's picture

Musketeering in Marseille

This week we set out on the city of Marseille. The more imaginative (Dumasian) mind might liken us to three contemporary Musketeers - keen to duel in the noble art of electric machine science. The setting of our chosen contest being the XXth International Conference of Electric Machines (ICEM 2012) in Marseille, France.

Syarif Yahya's picture

CFD Simulation for refrigerator using SolidWorks Flow Simulation

Justin Bishop's picture

2012 Summer Students

 

Three students joined the EPG in Summer 2012 working on a variety of tasks:

 

Nathan Ewin's picture

Dymola

Dymola (Dynamic Modeling Laboratory) is a physical modelling package that is similar to Matlab/Simulink but much more powerful.  It enables simulation of systems of many engineering fields, such as mechanical, electrical, thermodynamic, hydraulic, pneumatic and control systems. 

Darren F. Kavanagh's picture

Amory Lovins EPG Lab Visit!

Early on Monday morning (16th of July 2012) the Energy and Power Group (EPG) was delighted to welcome a most well esteemed and renowned scientist, Amory Lovins Co-founder, chairman and chief scientist of the Rocky Mountain Institute, to have a tour of our research laboratory and to see first-hand what interesting research science is being explored.

Peter Armstrong's picture

Thermal Test Rig

 

Water is an excellent medium for storing thermal energy due to the following reasons:

1. Water has a very high sensible and latent heat capacity - suppose you had a choice of storing an amount of sensible heat at a given temperature in either water or concrete - you'd need almost five times as much concrete by weight which would consume around two and a half times the volume that water would otherwise require.

2. Heat can travel in and out of water easily compared with other materials meaning domestic radiators and automotive cooling systems are reasonably small

Robert Camilleri's picture

Flow Measurement; Calibration and Use of a Variable Area Flow Meter

Picture this... You are currently setting up experiments involving fluids.  You have decided that you need to measure flow rates, and opted for a simple, widely applicable Variable Area Flow Meter.  But there’s a catch: flow meters are calibrated for use at a specific operating point.  The article below is intended to provide some information on the use and calibration of such flow meters.

Sook Teng Vun's picture

Peggie Press Launch!

 

Darren F. Kavanagh's picture

EPG Laboratory Blog

The content presented below gives a good introduction to the EPG team and to our research laboratory at the University of Oxford, based at Begbroke Science Park. This is achieved using some snapshot summaries of various research activities from the EPG laboratory. NB: you can click on any of the images below to get a closer look.

Nicole Miranda's picture

Anaerobic Digestion: an option for the milk production sector

Last Friday 9th of March, 3 members of the EPG Group (Dr. Malcolm McCulloch, Andrew Alkiviades and myself) and Barbara Hammond (Oxfordshire Low Carbon Hub) visited Mapledurham Estate. Located in the north west of Reading and owned by John Eyston, this Estate includes a variety of activities such as: tourism and planning events, cultivation of crops milk production and hydropower generation.

Peter Armstrong's picture

EPG come dine with me evening

Whilst for the majority of the time EPG members are concerned with matters relating to things like: axial flux machines, batteries and refrigeration cycles, in order for us to function as normal members of society, it is important that we are also clued up on things like: the art of conversation, how to hold cutlery properly, maintaining eye contact and general etiquette. To this end we've embarked on a group "come dine with me" experience where we sample the cuisine on offer at the colleges we attend. This week's event was jointly hosted by Robert and myself at Christ Church.

Yuan Gao's picture

Switched Reluctance Machines

Switched Reluctance Machines are a type of electrical machine distinct from the wider known permanent magnet machine, or the induction machine.  Where permanent magnet machines generate torque from the interaction between a (rotating) magnetic field created by coils in the stator and the permanent magnetic field of the magnets in the rotor; and where the induction machine does the same but with a secondary induced field from the windings in the rotor; the reluctance machine generates torque from the movement of the rotor as it aligns itself with the stator's magnetic field.

Syarif Yahya's picture

Phase transformation of phase change materials (PCM)

 

Phase change materials (PCM) are used in thermal energy storage. The material will undergo a phase change during the charging and discharging process without temperature difference at normal pressure. The thermal storage capacity of these materials is mainly dependent on the mass, the latent heat and sensible heat of each material.

Nicole Miranda's picture

Searching for energy-efficient fridges

The Maldives is the first country that aims for carbon neutrality in the world. With this in mind, the EPG has participated in the discussion of some of the questions stated in the Maldives CO2 forum (http://maldives.co2.org/) and has contributed with some of its experience in the field of energy efficiency.

Andrew Alkiviades's picture

Effect of daylight saving measures on energy demand

Benjamin Franklin is credited with creating the idea of the daylight saving (DST) time policy in the late 18th century in an effort to preserve candles than were then used to supply lighting. However, there is currently a limited amount of literature on the real effect this policy has on energy consumption today and is usually contradictory. The energy sector has changed dramatically since then and thus is an important policy to review.

Yuan Gao's picture

Eco Marathon preliminary schematics

Spec'ing out the new electronics for PEG (or PEGGY, or PEGLEG), that the EPG will be building to represent Oxford University in the European Shell Eco-marathon challenge 2012.

Features to include:

  • Wireless real-time telemetry
  • Drive efficiency mapping and display
  • Option for automatic throttle control
  • Flux capacitor

Updated:

Nathan Ewin's picture

Regenerative Braking and Vehicle Supervisory Control @ Warwick Uni

On Thursday I attended the Regenerative Braking and Vehicle Supervisory Control dissemination event at Warwick University. The event consisted of a series of lectures describing the work to date from two work-streams which forms part of The Low Carbon Vehicle Technology Project (LCVTP). LCVTP is a collaborative research project between automotive companies and academia. The project partners include Jaguar Land Rover, Tata Motors European Technical Centre, Ricardo, MIRA LTD., Zytek Automotive, WMG and Coventry University.

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