Showing papers by "Soteris A. Kalogirou published in 2003"
TL;DR: How AI techniques might play an important role in modeling and prediction of the performance and control of combustion process is illustrated to testify to the potential of AI as a design tool in many areas of combustion engineering.
553 citations
TL;DR: In this paper, the authors presented the characteristics of medium to medium-high temperature solar collectors and an overview of efficiency and cost of existing technologies for industrial process heat applications in the Mediterranean climate.
513 citations
TL;DR: In this article, the authors present a method to evaluate the characteristics and performance of a single stage lithium bromide (LiBr) -water absorption machine, where the necessary heat and mass transfer equations and appropriate equations describing the properties of working fluids are specified.
366 citations
TL;DR: In this article, the authors present the generation of a type 2 Typical Meteorological Year (TMY-2) for Nicosia, Cyprus, which is useful for the prediction and comparison of the performance of passive and active solar systems and for building thermal analysis.
91 citations
TL;DR: In this article, the authors investigated the use of artificial neural networks for the prediction of air pressure coefficients across the openings in a light weight single-sided naturally ventilated test room.
26 citations
TL;DR: In this paper, the authors investigate the effect of renewable energy subsidies on renewable energy systems economics and conclude that renewable energy subsidy creates a positive impulse on renewable energies whereas the economic factors improve considerably when the subsidy for fuel is removed, as the expenditure made for the erection of a solar system replaces a more expensive fuel.
20 citations
01 Jan 2003
TL;DR: In this paper, the second law of thermodynamics is used to analyze the potential for entropy generation minimization of imaging concentrating solar collectors, and relations for the optimum operating conditions, in terms of the optimum collector outlet temperature for minimum heat transfer irreversibility or entropy generation maximization (or maximum exergy delivery), are derived.
Abstract: There are three types of imaging concentrating solar collectors, the parabolic trough, the parabolic dish and the central receiver. The second law of thermodynamics is used to analyze the potential for entropy generation minimization of imaging concentrating solar collectors. It is shown that the amount of exergy (useful energy) delivered by solar concentrating collector systems is affected by heat transfer irreversibilities occurring between the sun and the collector, between the collector and ambient air and within the collector receiver (absorber). Analysis is performed and relations are derived in this paper by considering both, an isothermal and a non-isothermal collector which is a more realistic model particularly for the long parabolic trough collectors. Relations for the optimum operating conditions, in terms of the optimum collector outlet temperature for minimum heat transfer irreversibility or entropy generation minimization (or maximum exergy delivery), are derived. The importance of operating at the optimum delivery temperature is analyzed and optimum values of entropy generated are derived for the collector types considered.
3 citations
01 Jan 2003
TL;DR: In this paper, the authors present an analysis of the weather data contained in a Typical Meteorological Year (TMY) and observe the effect of these data on the simulated load of a typical building.
Abstract: The objective of this paper is to present an analysis of the weather data contained in a Typical Meteorological Year (TMY) and observe the effect of these data on the simulated load of a typical building The weather data, contained in the TMY, are analysed with respect to the global and diffuse radiation falling on surfaces facing the four orientations, ambient temperature, wind speed and direction, and humidity ratio Collective results for the whole year indicate that the east wall receives 30% more total radiation than the south wall and the west wall receives only 20% of the beam radiation of the east wall Three different construction types of a typical house layout are also used in this study and simulated with respect to the heating and cooling loads for a complete year For the weather encountered in Cyprus the maximum cooling load occurs in July and the maximum heating load in January The monthly saving in loads by using insulation is of the order of 50% for cooling and 75% for heating
3 citations