scispace - formally typeset
Search or ask a question
Author

Tangellapalli Srinivas

Bio: Tangellapalli Srinivas is an academic researcher from VIT University. The author has contributed to research in topics: Combined cycle & Kalina cycle. The author has an hindex of 21, co-authored 108 publications receiving 1276 citations. Previous affiliations of Tangellapalli Srinivas include National Institute of Technology, Warangal & Gudlavalleru Engineering College.


Papers
More filters
Journal ArticleDOI
01 Aug 2009-Energy
TL;DR: In this paper, the authors presented the pattern of energy consumption in the household sector and analyzed the causalities underlying the present usage patterns, and suggested that the development interventions should include actor-oriented tools in energy planning, implementation, monitoring and evaluation.

99 citations

Journal ArticleDOI
TL;DR: In this paper, a thermochemical model has been developed to predict the gas composition and performance of a biomass gasifier based on thermodynamic equilibrium concept for different biomass materials, and a simplified numerical method is applied to solve the thermochemical equilibrium reactions.
Abstract: Biomass gasification involves the production of a gaseous fuel by partial oxidation of a solid fuel. Clean synthesis (syn) gas, produced from partial combustion of biomass, can be burnt in a gas turbine combustion chamber to run a biomass based combined cycle power plant. A thermochemical model has been developed to predict the gas composition and performance of a biomass gasifier based on thermodynamic equilibrium concept for different biomass materials. A simplified numerical method is applied to solve the thermochemical equilibrium reactions. The system consists of a pressurized circulating fluidized bed to produce the syn gas from the biomass. The effect of the relative air fuel ratio (RAFR), steam fuel ratio (SFR), and gasifier pressure has been examined on the gas composition, gasifier temperature, lower heating value of syn gas, and exergy efficiency of biomass gasifier to obtain a high yield from the biomass. It has been found that at lower values of RAFR and SFR, the heating value of the syn gas and the exergy efficiency of gasifier is high.

89 citations

Journal ArticleDOI
TL;DR: In this article, the performance characteristics of a hybrid power plant have been developed with turbine inlet condition (pressure and temperature) and variation in solar energy sharing, and a case study has been carried out to validate the thermodynamic cycle results.

75 citations

Journal ArticleDOI
TL;DR: In this article, a low temperature Kalina cycle has been investigated to optimize the heat recovery from solar thermal collectors, which can be used in the selection of boiler, separator and turbine conditions to maximize the power output as well as efficiency of power generation system.

64 citations

Journal ArticleDOI
TL;DR: In this paper, performance of an agitated shell and helical coil heat exchanger has been experimentally investigated using three water-based nanofluids (Al 2 O 3, CuO and TiO 2 ).
Abstract: Nanofluids have been reported to be capable of heat transfer intensification. Performance of an agitated shell and helical coil heat exchanger has been experimentally investigated using three water based nanofluids (Al 2 O 3 , CuO and TiO 2 ). The studies were carried out at different concentrations of nanofluid, nanofluid temperatures, stirrer speeds and coil-side fluid flow rates. Nanofluids of three concentrations 0.3, 0.6, 1, 1.5 and 2% by weight have been prepared for this purpose. Cetyltrimethyl ammonium bromide (CTAB) was used as stabilizer. Nanofluid was used as heating medium (shell-side) and water was used as coil-side fluid. It was found that heat transfer rate increases with increase in nanofluid concentration. Higher values of nanofluid concentration, stirrer speed and shell-side fluid temperature resulted in greater effectiveness of heat exchanger. A maximum increase of 30.37%, 32.7% and 26.8% in effectiveness of heat exchanger was observed for Al 2 O 3 , CuO and TiO 2 /water nanofluids respectively, when compared to water, indicating intensification of heat transfer.

60 citations


Cited by
More filters
Journal ArticleDOI
TL;DR: In this paper, the authors present how renewable energy resources are currently being used, scientific developments to improve their use, their future prospects, and their deployment, and represent the impact of power electronics and smart grid technologies that can enable the proportionate share of renewable resources.
Abstract: Electric energy security is essential, yet the high cost and limited sources of fossil fuels, in addition to the need to reduce greenhouse gasses emission, have made renewable resources attractive in world energy-based economies. The potential for renewable energy resources is enormous because they can, in principle, exponentially exceed the world׳s energy demand; therefore, these types of resources will have a significant share in the future global energy portfolio, much of which is now concentrating on advancing their pool of renewable energy resources. Accordingly, this paper presents how renewable energy resources are currently being used, scientific developments to improve their use, their future prospects, and their deployment. Additionally, the paper represents the impact of power electronics and smart grid technologies that can enable the proportionate share of renewable energy resources.

1,990 citations

Journal ArticleDOI
TL;DR: In this paper, the authors review different approaches, technologies, and strategies to manage large-scale schemes of variable renewable electricity such as solar and wind power, considering both supply and demand side measures.
Abstract: The paper reviews different approaches, technologies, and strategies to manage large-scale schemes of variable renewable electricity such as solar and wind power. We consider both supply and demand side measures. In addition to presenting energy system flexibility measures, their importance to renewable electricity is discussed. The flexibility measures available range from traditional ones such as grid extension or pumped hydro storage to more advanced strategies such as demand side management and demand side linked approaches, e.g. the use of electric vehicles for storing excess electricity, but also providing grid support services. Advanced batteries may offer new solutions in the future, though the high costs associated with batteries may restrict their use to smaller scale applications. Different “P2Y”-type of strategies, where P stands for surplus renewable power and Y for the energy form or energy service to which this excess in converted to, e.g. thermal energy, hydrogen, gas or mobility are receiving much attention as potential flexibility solutions, making use of the energy system as a whole. To “functionalize” or to assess the value of the various energy system flexibility measures, these need often be put into an electricity/energy market or utility service context. Summarizing, the outlook for managing large amounts of RE power in terms of options available seems to be promising.

1,180 citations

Journal ArticleDOI
TL;DR: A review of present achievements in the field of processing of ceramic-based materials with complex geometry using the main additive manufacturing (AM) technologies is presented in this paper, where the geometrical design of a desired ceramic component is combined with the materials design in order to reduce the fabrication times and product costs.
Abstract: This paper offers a review of present achievements in the field of processing of ceramic-based materials with complex geometry using the main additive manufacturing (AM) technologies In AM, the geometrical design of a desired ceramic-based component is combined with the materials design In this way, the fabrication times and the product costs of ceramic-based parts with required properties can be substantially reduced However, dimensional accuracy and surface finish still remain crucial features in today's AM due to the layer-by-layer formation of the parts In spite of the fact that significant progress has been made in the development of feedstock materials, the most difficult limitations for AM technologies are the restrictions set by material selection for each AM method and aspects considering the inner architectural design of the manufactured parts Hence, any future progress in the field of AM should be based on the improvement of the existing technologies or, alternatively, the development of new approaches with an emphasis on parts allowing the near-net formation of ceramic structures, while optimizing the design of new materials and of the part architecture

588 citations

Journal ArticleDOI
TL;DR: In this paper, the authors compared energy and exergy analyses of thermal power plants stimulated by coal and gas and provided a detailed review of different studies on thermal power plant over the years.
Abstract: The energy supply to demand narrowing down day by day around the world, the growing demand of power has made the power plants of scientific interest, but most of the power plants are designed by the energetic performance criteria based on first law of thermodynamics only. The real useful energy loss cannot be justified by the fist law of thermodynamics, because it does not differentiate between the quality and quantity of energy. The present study deals with the comparison of energy and exergy analyses of thermal power plants stimulated by coal and gas. This article provides a detailed review of different studies on thermal power plants over the years. This review would also throw light on the scope for further research and recommendations for improvement in the existing thermal power plants.

331 citations