Energy Science and Technology postgraduate personal statement example

Personal statement example

Last February I stood in a back garden in Leicester watching frost spread across the coil of a heat pump we had fitted three weeks earlier. The owner was worried it had broken. It had not; it was about to run a defrost cycle, briefly drawing heat from the house to clear the ice. Explaining that to her, I realised I could describe the cycle confidently but could not say how much energy those cycles cost over a winter, or how a different control strategy might change that. I want to study energy science and technology at postgraduate level because questions like that sit between thermodynamics, electrical systems and the way people actually live with equipment, and I want the tools to answer them properly.

My BEng in Mechanical Engineering gave me a sound grounding in thermodynamics, fluid mechanics and heat transfer, and I achieved an upper second. My strongest marks came in modules where analysis met measurement. For my final-year project I instrumented a small display chiller borrowed from a local convenience shop owner, fitting thermocouples to the evaporator, the cabinet air and the door seal, and logging compressor power through a plug-in meter for six weeks. I built a simple energy balance in Python and found that door openings during the morning restocking period accounted for a noticeably larger share of daily consumption than I had expected from the manufacturer's figures. The model was crude, with assumed infiltration rates, but it taught me how much an energy estimate depends on the quality of operating data, and how to be honest about uncertainty when presenting it.

Since graduating I have worked as an assistant to a self-employed heating engineer. Most of my days are practical: carrying cylinders, running pipework, commissioning systems and talking customers through thermostat settings. I also took over his heat loss calculations, which he used to do by rule of thumb. Working room by room from measurements and fabric assumptions has shown me how often older houses are let down by draughts and undersized radiators rather than the heat source itself. I have completed a short course in low-temperature heating design, and I now check flow temperatures after installation as a matter of routine.

Outside work, I have been reading about how electricity systems cope with rising demand. David MacKay's Sustainable Energy – Without the Hot Air was the first book that made me translate national energy debates into units I could compare, and its insistence on numbers rather than slogans shaped how I approached my project. More recently I have been following discussions of demand flexibility, which made me wonder whether heat pumps could shift some of their running to off-peak periods without making homes uncomfortable, and what building thermal mass makes possible.

Not everything I do concerns energy. I play cornet in a brass band, which means Tuesday rehearsals, carrying music stands and occasionally organising transport for contests. At home I manage the small flat my mother lets out, handling repairs, gas safety checks and meter readings with the tenant. Both have made me reliable about paperwork and patient with people who are not interested in technical detail but want things to work.

At postgraduate level I hope to deepen my understanding of power electronics, energy storage and system modelling, areas my degree touched only briefly, and to develop stronger skills in simulation and data analysis. I would particularly like to work on projects linking building-scale heating with grid behaviour. In the longer term I see myself in applied research or technical consultancy, helping to make low-carbon heating perform as well in an ordinary terraced house as it does on paper. I bring practical experience of installations, careful measurement habits and a clear sense of where my knowledge needs to grow.