Joseph Daniel

• VIT Chennai

Super-critical Carbon dioxide (s-CO2) power plants are considered to be efficient and environmentally friendly compared to the traditional Rankine cycle-based steam power plants and Brayton cycle-based gas turbine power plants. In this work, the system design of a coal-fired 100 MWe double reheat s-CO2 power plant is presented. The system is also o...

Thermal management of electric vehicles is a key step in their wide spread and safe usage. This work considers an electric car as a combination of three entities which contribute to the thermal load viz. the battery, motor and passenger cabin. A refrigerant based cooling system is proposed and is applied to a mid-size electric car (∼60 kW) to obtai...

Solar cookers can greatly reduce the overall carbon footprint of the cooking done in India. In the present work a funnel-type solar cooker is designed using cardboard. After making the solar cooker it is then analyzed on the various performance metrics namely the figures of merit, efficiency value and Cooker Opto–thermal Ratio (COR) which are depen...

Photocatalysis is drawing considerable research attention because of its extensive applications in the field of environmental remediation and renewable energy. In this work, synthesis and activity of magnetic BiFe1-xCoxO3 (x = 0, 0.025, 0.05, 0.075 & 0.10) photocatalysts under visible light irradiation is reported. The photocatalyst materials were...

The prime concern of the scientific community nowadays is high energy consumption and related greenhouse gas (GHG) emission. One of the major energy consumers is building sector, where nearly 30% of total energy is disbursed, with high priority to space cooling and ventilation. In addition, the contribution of buildings for GHG emission is also hig...

The paper presents an energy and exergetic analysis of simple and evacuated tubes solar still. Experimental analysis was carried out on a 1 m² basin area and a total of 18 evacuated tubes are attached to the lower side of the solar still. The results revealed that the highest exergetic efficiency of 70.8% and 34.6% was achieved in 0.03 m water dept...

By the end of few decades, it is considered that petroleum products will be hard to produce and inadequate for usage. Due to increased automobile population over these years, petrol and diesel rates increased drastically. Also, emissions from conventional fuels are a major contributor for air pollution. These problems can be solved with the help of...

This article reports a study conducted to understand the influence of different coal species on the performance of a thermal power plant. The aim is to understand the difficulties in replacing an existing coal with another available species. The methodology of 3-E (Energy, Exergy and Environment) analysis has been implemented on a 3500 MW coal fir...

In this work, a detailed thermodynamic analysis is performed on a solid oxide fuel cell-gas turbine combined system. The fuel input to the fuel cell is the synthetic gas produced from the gasification of municipal solid waste. The efficiency and output power of the system are calculated and the system is analyzed for its performance by variation of...

This study presents the performance evaluation of a system consisting of a Solid oxide fuel cell (SOFC) and steam turbine where the fuel cell is powered by synthetic gas from municipal solid waste (MSW). Analysis is performed based on first and second laws of thermodynamics. The modelling of the system is done in a flow sheeting software Cycle Temp...

In this research article, the author has conducted the comparative thermal experimental analysis and investigation on Conventional still and Modified Evacuated Tubes solar still with different water volume of 30 and 50 Litre in Basin, in respect of Energy Balance Equation. The various variable elements have been taken into account and duly calculat...

Although there is a great improvement in fuel economy over these years, the demand for fuel is rising due to increase in number of automobiles. It is believed that petroleum products and crude oil will soon become very rare and their production will be costly in nearing future. Also, the emissions from gasoline engines along with other polluting sy...

This article reports a study conducted to understand the influence of different coal species on the performance of a thermal power plant. The aim is to understand the difficulties in replacing an existing coal with another available species. The methodology of 3-E (Energy, Exergy and Environment) analysis has been implemented on a 3x500 MW coal fir...

The vital predicament that mankind will face in near future is the deficiency of energy. Heavy dependency of fossil fuels for driving the systems make the problem too complex by adding the Green House Gas (GHG) emission also. Across the sphere, consumption pattern confirms the major role of building sector, mostly for space conditioning application...

This study deals with an energy and exergy analysis of a coal fired 3500 MW thermal power plant located in South India. The platform used for simulation and analysis is Cycle-Tempo. In this article, the parameters of mass flow rate and temperatures at different state points of the thermal power plant were validated using the simulations carried ou...

This paper describes the thermal analysis of building block used for passive cooling application. For this purpose, a concrete block with cavities, drilled near the outer wall, is filled with micro encapsulated Phase Change Material (PCM). The commercially available PCM, HS 29 is used for this analysis. The micro encapsulated PCM filled in the cavi...

The discharges of effluents from the Textile industries contain bleaching and dyeing chemicals which are very harmful to the environment. Thus, managing textile effluents to make zero discharge of the above chemicals using renewable energy is the need of the hour. Here we report photocatalytic degradation of Acid Red-85, textile dye in visible ligh...

This experiment deals with the thermal analysis of cement bricks encapsulated with phase change materials (PCM) when subjected to ambient weather conditions such as solar radiation and temperature. Thermal analysis and modelling of building bricks containing PCM has been carried out to exploit the high latent heat of fusion which will help to impro...

Combined cycle power plants, especially the combination of gas turbine and steam turbine power plants as the topping and bottoming cycles respectively, have been used for power generation for a long period of time. The resultant efficiency is greater than that of the individual cycles. This paper deals with the design and energy and exergy analysis...

Cooking is the major necessity for people all over the world. It accounts for a major share of energy consumption in developing countries. Therefore there is a critical need for the development of alternative and affordable methods of cooking. Solar cooking is a novel and eco friendly method of harnessing sun's energy. There are many types of solar...

Citric acid assisted auto combustion method was used in the synthesis of BiFeO3 nanoparticles. The synthesized nanoparticles were characterised using X-ray powder diffraction, Scanning electron Microscope, BET surface area analysis, UV-Visible Diffuse Reflectance Spectrometer and Vibratory Sample Magnetometer. The photocatalytic behaviour of the BF...

Smart phones are posed with heat transfer problems due to the space and weight limitation and also due to ever increasing processer speed. In this work, heat transfer in a Xiaomi Mi4i smart phone model has been studied using CFD. Studies at various operating conditions like (i) Basic operation, (ii) Usage of all applications, and (iii) Usage of int...

Different effluents from textile industries which are dumped into the water bodies have been a major concern of the modern world. The uncontrolled discharge of the synthetic textile dyes in water bodies especially have led to serious environmental problems and health hazards. Among the different existing approaches to treat water, photocatalysis is...

Objectives: A review of Exergy based analysis in Gas Turbine-Hybrid systems for power generation has been presented. The purpose of the review is to understand the work carried out earlier and to identify the areas which are not sufficiently addressed. Conventional hybrid systems like Gas Turbine-Steam Turbine systems were considered along with non...

Energy and Exergy analysis give us important information which is helpful in improving the performance of a power plant. However, energy analysis does not emphasize on its quality while exergy analysis does. This paper briefly reviews the energy and exergy analysis carried out in various steam turbine power plants and summarizes the findings of tho...

This paper presents a detailed review of experimental and modeling work carried out on devolatilization of different kinds of wood under fluidized bed combustion/pyrolysis conditions. Laboratory scale experimental studies as well as analytical, phenomenological and numerical modeling works have been reviewed and presented. It has been found that at...

The usage of mobile phone has been increasing worldwide. In India too with billion people is bound to become one of the largest users of mobile phones. The life of mobile phone is also increasing as the technology is improving each day and users too would like to adopt the new technology, thereby new mobile phones. This has lead to the next questio...

Since the invention of syringes 150 years ago not many design changes had been done on design. Syringe being one of the simple and effective drug delivery device used widely. In this paper an approach for redesign of the syringe is done considering the sustainability quotient of the design and material as well. By using the sustainable design princ...

A developing country like India encounters challenges like exponential increase in population and rising per capita energy consumption which demands an optimum usage of available energy resources. Currently the energy demands are mostly met by non renewable energy sources, a system that puts a tremendous pressure on the economy and causes a serious...