Search results for " Power station"

Manufacturing tolerances effects on PV array energy production

2014

This paper investigates the tolerance effects of commercial photovoltaic modules in terms of electrical energy reduction of photovoltaic plants. Several commercial modules, having the same rated power, present different power tolerance values. A wide tolerance is an indicator of possible defects or differences in the production process and is responsible of remarkable reductions in the electricity production of photovoltaic plants. In this paper, thanks to the development of a suitable simulation tool, several simulations have been carried out, considering different tolerance and shading conditions for the PV array. Simulation results quantify the peak power value of the different plant con…

The Ignoble Fuel

2012

Perhaps the first historic mention of a substance derived from coal goes back to the Bible, when Yahweh orders Noah to build the famous ark.

Decay Heat Removal and Transient Analysis in Accidental Conditions in the EFIT Reactor

2008

The development of a conceptual design of an industrial-scale transmutation facility (EFIT) of several 100 MW thermal power based on accelerator-driven system (ADS) is addressed in the frame of the European EUROTRANS Integral Project. In normal operation, the core power of EFIT reactor is removed through steam generators by four secondary loops fed by water. A safety-related decay heat removal (DHR) system provided with four independent inherently safe loops is installed in the primary vessel to remove the decay heat by natural convection circulation under accidental conditions which are caused by a loss-of-heat sink (LOHS). In order to confirm the adequacy of the adopted solution for decay…

A simple and accurate model of photovoltaic modules for power system design

2014

Review on photovoltaic based active generator

2015

An active generator has the capacity to support frequency control and instantaneous power balance. The grid operator adjusts the power dispatch of generators according to power demand fluctuations. Photovoltaic (PV) based active generators can be used as load following generators in the same manner as other power dispatch generators. This new type of distribution system, based on active generator(s), needs new innovative management and operation strategies for increasing the penetration of intermittent renewable energy systems. The considered PV based active generator has three units, i.e., PV array, battery storage and super capacitor. In this review paper, the management and operation app…

A measurement methodology for monitoring a CHCP pilot plant for an office building

2003

Abstract In Mediterranean areas, climate conditions determine quite equal demand both for thermal and cooling energy. The possibility to convert a cooling demand in thermal one through an absorption chiller allows to extend widely the number of running hours of a cogeneration plant. A trigeneration pilot plant for two office building is described, in which an integrated lay-out includes a NG prime mover with heat exchanger, an absorption chiller and a reversible heat pump. The pilot plant is completed and pre-running test were performed. Different fluid dynamics parameters will be monitored, in order to build the actual cumulative curve for thermal power. The measurement methodology is also…

Efficiency increase in thermal desalination plants by matching thermal and solar distillation: theoretical analysis

2005

Abstract The effluent streams from MSF and MED plants retain substantial thermal and mechanical energy which is usually wasted as the streams are rejected into the environment. Recent environmental studies pose the question of environmental sustainability of desalination due to the large amount of heat and brine dissipated into the sea. Moreover the use of renewable energy so far have been confined to experimental studies or to the use in remote areas and no studies have been carried out on the coupling of a solar still plant with an existing thermal desalination installation in order to take advantage of the heat streams generated by the thermal plants. The combination of a solar desalinat…

An economic study about the installation of PV plants reconfiguration systems in Italy

2014

This paper shows the economic convenience of the application of a reconfiguration system for photovoltaic plants, considering the incentives system in Italy and its recent modifications. The reconfiguration is an alternative to the Distributed Maximum Power Point Tracking, DMPPT, technique used to overcome the mismatch problem in Photovoltaic, PV, plants. The reconfiguration techniques employ a microprocessor-based system that modifies the layout of the PV plant by physically changing the connections among modules. After the explanation of the working principle of the PV reconfiguration system allowing the improvement of the efficiency of the same plant and the relevant installation, the ma…

A photovoltaic system suitable for the battery pack charging of an electrically power assisted velocipede

2012

The paper describes the designing, sizing, realization and setting up of a complete system suitable for the management of an electrically power assisted velocipede using a photovoltaic module for the charging of the batteries. In the work an overview on the sustainable mobility needs and on the commercial electrically power assisted velocipedes is presented and the "Ecolapa" prototype, set up in the SDELab laboratory of Palermo University, is precisely described underlining the designing, implementation and setting up phases of the photovoltaic charging system settled up on the velocipede. Moreover tests oriented on the setting up of the whole system and validation tests on the prototype ar…

Dynamic simulation model of a coal thermoelectric plant with a flue gas desulphurisation system

2006

Abstract In this paper a Dynamic Simulation Model has been used to present the likely responses of the electricity industries’ latest perturbations such as: changes in environmental regulations, international fuel market evolution, restriction on fuel supply and increase on fuel prices, liberalisation of the European Electricity Market, and the results of applying energy policies and official tools such as taxes and emission allowances. The case under study refers to the Teruel Power Plant, built after the 1970s oil crisis to ensure national electricity supply; burning domestically produced coal in order to ensure local mining activity. The Teruel Power Plant has made relevant investments i…