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Numerical Heat Transfer And Fluid Flow

Modelling of fuel droplet heating and evaporation: Recent results and unsolved problems

Models describing the transient behavior of phase-change energy storage (PCES) units are presented. Simulation techniques are used in conjunction with these models to determine the performance of solar heating systems utilizing PCES. Both air-based and liquid-based systems are investigated. The effects of storage capacity, storage unit heat transfer characteristics, collector area and location on the system performance are investigated for systems utilizing sodium sulfate decahydrate and paraffin wax as storage media. Optimum ranges of storage sizes are recommended on the basis of systems' thermal performance. Comparison is made between systems utilizing PCES and those using sensible heat storage, viz. rock beds in air-based systems and water tanks in liquid-based systems. The variation of the solar supplied fraction of load with storage size and collector area is given for systems utilizing both types of storage. The effects of location and collector energy loss coefficient on the relative performance of PCES and sensible heat storage are also investigated.

Effects of phase-change energy storage on the performance of air-based and liquid-based solar heating systems

Investigation of the effect of geometric and operating parameters on thermal behavior of vertical shell-and-tube latent heat energy storage systems

3-D microstructural model of freckle formation validated using in situ experiments

Enthalpy porosity model for melting and solidification of pure-substances with large difference in phase specific heats

Study of Freckles Formation During Directional Solidification Under the Influence of Single-Phase and Multiphase Convection

We know that on the global scale till now the major sources of energy are fossil fuels like coal, oil, and natural gases. Because of following three reasons, it is pertinent to use the naturally available renewable energy in the form of solar energy to replace fossil fuel energy: (a) With the advent of science and technology and with ever increasing global population, the total energy consumption is increasing day by day, (b) the fossil fuel reserves world over are fast depleting, and (c) the fossil fuels emit greenhouse gas during combustion, contributing significantly to global warming. Not surprising, during the last two, three decades, hectic research has been going on in almost all developed/developing countries to develop techniques to make maximum use of solar energy through various processes like thermal processes, photovoltaic processes. In India many research groups are actively engaged in studying utilization of solar energy in an efficient way using variety of techniques. The present monograph titled “Applications of Solar Energy” is the result of collection of work done by some such research groups.

Introduction to Applications of Solar Energy

A generalized enthalpy update scheme is presented for evaluating solid and liquid fractions during the solidification of binary alloys, taking solid movement into consideration. A fixed-grid, enthalpy-based method is developed such that the scheme accounts for equilibrium as well as for nonequilibrium solidification phenomena, along with solid phase movement. The effect of solid movement on the solidification interface shape and macrosegregation is highlighted.

A Generalized Enthalpy Update Scheme for Solidification of a Binary Alloy with Solid Phase Movement

We know that on the global scale till now the major sources of energy are fossil fuels like coal, oil, and natural gases. Because of following three reasons, it is pertinent to use the naturally available renewable energy in the form of solar energy to replace fossil fuel energy: (a) With the advent of science and technology and with ever increasing global population, the total energy consumption is increasing day by day, (b) the fossil fuel reserves world over are fast depleting, and (c) the fossil fuels emit green house gas during combustion, contributing significantly to global warming. Not surprising, during the last two, three decades, hectic research has been going on in almost all developed/developing countries to develop techniques to make maximum use of solar energy through various processes like thermal processes, photovoltaic processes. In India many research groups are actively engaged in studying utilization of solar energy in an efficient way using variety of techniques. The present monograph titled “Applications of Solar Energy” is the result of collection of work done by some such research groups. H. Tyagi (✉) Department of Mechanical Engineering, Indian Institute of Technology Ropar, Rupnagar 140001, Punjab, India e-mail: himanshu.tyagi@iitrpr.ac.in A. K. Agarwal Department of Mechanical Engineering, Indian Institute of Technology Kanpur, Kanpur 208016, Uttar Pradesh, India e-mail: akag@iitk.ac.in P. R. Chakraborty Department of Mechanical Engineering, Indian Institute of Technology Jodhpur, Karwad, Jodhpur 342037, Rajasthan, India e-mail: pchakraborty@iitj.ac.in S. Powar School of Engineering, Indian Institute of Technology Mandi, Mandi 175005, Himachal Pradesh, India e-mail: satvasheel@iitmandi.ac.in © Springer Nature Singapore Pte Ltd. 2018 H. Tyagi et al. (eds.), Applications of Solar Energy, Energy, Environment, and Sustainability, https://doi.org/10.1007/978-981-10-7206-2_1 3 w w w .e le c ro n ic b o .c o m

Prodyut R. Chakraborty

Papers

Enthalpy porosity model for melting and solidification of pure-substances with large difference in phase specific heats

Study of Freckles Formation During Directional Solidification Under the Influence of Single-Phase and Multiphase Convection

Introduction to Applications of Solar Energy

A Generalized Enthalpy Update Scheme for Solidification of a Binary Alloy with Solid Phase Movement

Applications of Solar Energy