Author
Christos N. Markides
Other affiliations: Instituto Politécnico Nacional, City University London, University of Cambridge ...read more
Bio: Christos N. Markides is an academic researcher from Imperial College London. The author has contributed to research in topics: Organic Rankine cycle & Thermal energy storage. The author has an hindex of 46, co-authored 325 publications receiving 6341 citations. Previous affiliations of Christos N. Markides include Instituto Politécnico Nacional & City University London.
Papers published on a yearly basis
Papers
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TL;DR: In this paper, a review of recent advances in the measurement and modeling of thermophysical properties at the nanoscale (from the solid state to colloids) is presented, including thermal conductivity, dynamic viscosity, specific heat capacity, and density.
322 citations
TL;DR: In this paper, the suitability of hybrid PVT systems for the provision of electricity and hot water in the UK domestic sector, with particular focus on a typical terraced house in London, was assessed.
243 citations
TL;DR: In this paper, a small-scale combined solar heat and power (CSHP) system based on an organic rankine cycle (ORC) was investigated for the combined provision of heating and power for domestic use in the UK.
239 citations
TL;DR: In this paper, a dynamic model of a hybrid photovoltaic/thermal (PVT) collector with a sheet-and-tube thermal absorber is presented to evaluate the annual generation of electrical energy along with the provision of domestic hot-water (DHW) from the thermal energy output, by using real climate data at high temporal resolution.
187 citations
TL;DR: In this paper, a thermodynamic analysis is presented based on traditional cycle calculations coupled with a Schumann-style model of the packed beds, and results of an optimisation study are then given in the form of trade-off surfaces for roundtrip efficiency, energy density and power density.
182 citations
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TL;DR: A comprehensive and clear picture of the state-of-the-art technologies available, and where they would be suited for integration into a power generation and distribution system is provided in this article.
2,790 citations
2,687 citations
TL;DR: In this paper, the merits and demerits of solar energy technologies are both discussed and a number of technical problems affecting renewable energy research are also highlighted, along with beneficial interactions between regulation policy frameworks and their future prospects.
Abstract: The development of novel solar power technologies is considered to be one of many key solutions toward fulfilling a worldwide increasing demand for energy. Rapid growth within the field of solar technologies is nonetheless facing various technical barriers, such as low solar cell efficiencies, low performing balance-of-systems (BOS), economic hindrances (e.g., high upfront costs and a lack of financing mechanisms), and institutional obstacles (e.g., inadequate infrastructure and a shortage of skilled manpower). The merits and demerits of solar energy technologies are both discussed in this article. A number of technical problems affecting renewable energy research are also highlighted, along with beneficial interactions between regulation policy frameworks and their future prospects. In order to help open novel routes with regard to solar energy research and practices, a future roadmap for the field of solar research is discussed.
1,331 citations
01 Jan 1992
TL;DR: In this article, cross-correlation methods of interrogation of successive single-exposure frames can be used to measure the separation of pairs of particle images between successive frames, which can be optimized in terms of spatial resolution, detection rate, accuracy and reliability.
Abstract: To improve the performance of particle image velocimetry in measuring instantaneous velocity fields, direct cross-correlation of image fields can be used in place of auto-correlation methods of interrogation of double- or multiple-exposure recordings. With improved speed of photographic recording and increased resolution of video array detectors, cross-correlation methods of interrogation of successive single-exposure frames can be used to measure the separation of pairs of particle images between successive frames. By knowing the extent of image shifting used in a multiple-exposure and by a priori knowledge of the mean flow-field, the cross-correlation of different sized interrogation spots with known separation can be optimized in terms of spatial resolution, detection rate, accuracy and reliability.
1,101 citations