Many efforts have been spent in the design and development of Concentrated Solar Power (CSP) Plants worldwide. Most them are for on-grid electricity generation they medium or large plants (in order MWs) which can benefit from economies scale. Nevertheless, several potential applications Small-Scale CSP (< 1 MW) be relevant industrial sector as well off-grid purposes (i.e. rural contexts). This paper presents technologies suitable applications, cogenerated production. Major characteristics...

Solar Dish Micro Gas Turbine (MGT) systems have the potential to become interesting small-scale power plants in off-grid or mini-grid contexts for electricity poly-generation production. The main challenging component of such is solar receiver which should operate at high temperatures with concentrated radiations, strongly vary time. This paper deals design and analysis a novel integrated short-term storage system based on Phase Change Materials prevent sudden variations maximum temperature...

In the present paper, D-CAES storage systems are compared with Sodium–Sulfur (Na–S) and Lithium-ion (Li-ion) based ones on basis of Levelized Cost Storage (LCOS). Utility-scale characterized by a rated power in range 5–20 MW capacity tens/hundreds megawatt-hours have been addressed. Analyses carried out varying key parameters such as installed power, charge/discharge time periods, price electricity fuel cost. Results show that adoption can lead to better economic performance respect BES...

The paper deals with the design and off-design analysis of a compression storage system for small size Compressed Air Energy Storage (CAES) plants. is constituted by multi-stage reciprocating compressor coupled an artificial air reservoir. A methodology preliminary sizing modelling has been developed. In order to ensure appropriately wide range operations, particular attention paid selection most suitable capacity control devices. Given regulation margins actual level charge reservoir,...

The sulfur−iodine cycle is one of the most promising thermochemical cycles for hydrogen production. Its coupling with a solar energy primary source great challenge to achieve efficient and economically competitive H2 Within this cycle, decomposition sulfuric acid plays key role, process being energy-demanding reaction step. In paper, combined computational experimental study at high temperature H2SO4 SO2 presented. scope paper present new information data about high-temperature carried out...

Dish-Micro Gas Turbines (MGTs) can be promising systems for power production at small-scale by concentrated solar radiation. Several high-temperature receivers have been already designed such plants, however, nowadays, none of them assure the proper thermal inertia to level effects radiation fluctuations on engine performance and safety. In this paper, a receiver integrated with short-term storage system based Phase-Change Materials (PCMs), is proposed. On basis previous preliminary...

Industrial facilities release a large amount of heat as by-product their processes. To improve environmental performance and increase process profitability, portion the waste can be recovered employed for power generation by recovery systems. Supercritical carbon dioxide (sCO2) plants are emerging potential alternatives to well-established technologies (WHR) in heavy industry. This paper offers preliminary techno-economic analysis heat-to-power system based on sCO2 closed-loop...

Small-Scale Concentrated Solar Power Plants could have a potential market for off-grid applications in rural contexts with limited access to the electrical grid and favorable environmental characteristics. Some plants already been developed, like 25-30 kWe Dish-Stirling engine. Other ones are under development as, example, based on Parabolic Trough Collectors coupled Organic Rankine Cycles. Furthermore, technological progress achieved of new small high-temperature solar receiver, makes...

The technological progress carried out in the development of high-temperature materials has led to design new concentrated solar power plants, like Dish-Micro Gas Turbines (Dish-MGTs). This study proposes a novel cavity receiver for small-scale Dish-MGT plants with phase-change material storage system integrated inside container. Such provides proper thermal inertia component, level effects short-term radiation fluctuations which can reduce plant performance and, worst cases, damage...

The Authors consider that as a mid-term storage technology (from some hours to days), small/medium size CAES systems (1–10 MW) might be efficiently and profitably used for off-grid self-consumption applications well the provision of ancillary services on lower grid levels. A crucial aspect related feasibility system concerns with availability efficient affordable air expanders. For typical applications, suitable values pressure at expander inlet range from 40 60 bar. Since such are...

The paper deals with the economic performance assessment of CHP plants based on small size Gas Turbine (1-6 MWEL) taking present Italian regulatory framework and context into consideration.From January 2011, and, consequently, incentive mechanism is radically changed.The "High Efficiency Cogeneration" concept has been introduced requirements to be fulfilled by a plant obtain incentives defined.Such are essentially related achievement threshold value Primary Energy Saving (PES)...

Looking at the waste heat potential made available by industry, it can be noted that there are many sectors where small scale (&lt; 100 kWe) organic Rankine cycle (ORC) plants could applied to improve energy efficiency. Such quite challenging from techno-economic point of view: temperature primary source poses a low cutoff system thermodynamic Therefore, high-performance components needed, but, same time, they have cost as possible assure reasonable payback time. In this paper, design...

Gas Turbines (GTs) for large IGCC plants need some modifications because, usually, they have been developed to be fed with Natural (NG) while the Syngas from has a lower Low Heating Value (LHV). As consequence, larger flow in expander raises compressor exit pressure, producing instability risks. One of possible options consists modification Expander Flow Functions accommodate input pressure safe range. The above option modifies also hot surface blade wall temperature no changes cooling...

Turbomachines play a significant role in some key sectors as aircraft and marine propulsion, power production, heat ventilation air conditioning chemical processing. The success of dynamic machines is connected to the wide variety demands that they can cover, together with their compactness, reliability availability. In this respect, such are favourite candidate support an efficient exploitation renewable energy sources development energy-saving systems. Innovative plants require which work...

For Concentrated Solar Power plants, the storage of thermal energy at high temperature is a critical issue. This paper deals with application Phase Change Material integrated in solar receiver Dish-Micro Gas Turbine (DMGT) for mitigation radiation fluctuation effects on DMGT performance. this application, PCM should have melting between 900 and 1200 ºC. Even if some promising materials are suggested literature, properties most them not fully characterised working range. Therefore, presents...

The problem of planning the production a pool power plants has been deeply investigated. Maintenance management and load allocation problems have assumed as crucial aspects for achieving maximum plant profitability. A production-planning approach developed, genetic algorithm techniques adopted to implement developed approach. Life consumption gas turbines’ hot-section components considered key element required in simulating plants’ behaviors. As result, deterioration model included into...

The paper deals with the relevant problem of establishing statuses degraded performance Gas Turbine based Power Plant Components and remapping simulator models. methodology is on physical models including Reality Actuality Functions that modify model source terms Governing Conservation Equations. Inverse calculations Neural Networks are illustrated application to two GE LM6000 PA aeroderivative Turbines widely discussed.