Browsing by Author "O'Shaughnessy, Seamus"
Now showing items 1-20 of 23
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Adaptive Design of a Prototype Electricity-Producing Biomass Cooking Stove
(2015)This work is a second iteration of an adaptive design project aimed at developing an appropriate off-grid technology for small-scale electricity generation in rural Malawi, and possibly for other developing countries. ... -
Battery Charging Considerations in Small Scale Electricity Generation from a Thermoelectric Module
(2014)This project involves the development of a prototype electrical gen erator for delivering and storing small amounts of electricity. Power is generated using the thermoelectric effect. A single ... -
Bubble-induced Marangoni convection
(Trinity College (Dublin, Ireland). Department of Mechanical and Manufacturing Engineering, 2011)Thermal Marangoni convection about a 1mm radius air bubble situated under a heated wall of constant temperature immersed in a silicone oil layer (Pr = 220) of constant depth 5mm was experimentally investigated using a flow ... -
A computational conjugate heat transfer study of a rectangular minichannel undergoing sinusoidal flow pulsations
(2022)The development of current and next generation high performance electronic devices has led to smaller components in more densely packed spaces. The increasing power levels have resulted in ever-increasing heat flux densities ... -
Convective heat transfer due to thermal Marangoni flow about two bubbles on a heated wall
(2014)Three dimensional simulations of t hermal Marangoni convection about two bubbles situated on a heated wall immersed in a liquid silicone oil layer have been performed to gain some insight into the thermal and ... -
Evaporating hydrophilic and superhydrophobic droplets in electric fields
(2021)Evaporating water droplets on a heated substrate are investigated in this work. Specifically, the influences of electric fields are studied in the context of the heat flux distribution beneath the droplets as well as the ... -
An experimental evaluation of thermoelectric generator performance under cyclic heating regimes
(2022)Thermal cycling is known to adversely affect the performance and lifespan of thermoelectric generators (TEGs) yet has received limited attention to date. The current study experimentally investigates the effect of thermal ... -
Experimental Investigation of Heat Transfer Enhancement by Pulsating Flow in a Minichannel
(2021)The increasing power density requirements of next generation high performance electronic devices has resulted in ever-increasing heat flux densities which necessitates the evolution of new liquid-based heat exchange ... -
Field Trial Testing of an Electricity-Producing Portable Biomass Cooking Stove in Rural Malawi
(2014)A novel off - grid electricity - producing device has been designed for integration with biomass - fuelled improved cooking stoves commonly in use in the developing world. The device operates on the ... -
Flexible solar and thermal energy conversion devices: Organic photovoltaics (OPVs), organic thermoelectric generators (OTEGs) and hybrid PV-TEG systems
(2022)Solar and thermal energy conversion are two major renewable energy technologies highly sought after in the past two decades by academia, industry, and policymakers. Besides the traditionally large-size solar and thermal ... -
The Influence of the Magnitude of Gravitational Acceleration on the Marangoni Convection about an Isolated Bubble under a Heated Wall
(2009)Thermocapillary or Marangoni convection is the liquid motion caused by surface tension variation in the presence of a temperature gradient along a gas–liquid or vapor–liquid interface. This work numerically ... -
Natural convection from a triangular array of isothermal horizontal cylinders
(2021)Natural convection heat transfer from three isothermally heated horizontal cylinders submerged in water in a triangular arrangement is investigated. Two configurations, named here as one over two and two over one, are ... -
Numerical Investigation of Bubble Induced Marangoni Convection: Some Aspects of Bubble Geometry
(2008)Thermocapillary or Marangoni convection is a surface tension driven flow that occurs when a gas–liquid or vapor–liquid interface is subjected to a temperature gradient. In the past, the contribution to local heat transfer ... -
Numerical investigation of bubble-induced marangoni convection
(2009)The liquid motion induced by surface tension variation, termed the thermocapillary or Marangoni effect, and its contribution to boiling heat transfer has long been a very controversial issue. In the past this convection ... -
Performance analysis of a prototype small scale electricity-producing biomass cooking stove
(2015)An electrical generator has been integrated with a locally produced, biomass-fed clay cooking stove in rural Malawi. The generator produces small amounts of electricity based on the thermoelectric effect. Five demonstrator ... -
Performance evaluation of thermoelectric generators under cyclic heating
(2021)The effect of thermal cycling on thermoelectric generator (TEG) performance is investigated for six nominally identical samples subjected to the same heating cycle profile. All TEGs experienced performance degradation, ...
