design and perform your experimentation and evaluate the energy storage performance of these sensible heat thermal energy...

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Mechanical Engineering

design and perform your experimentation and evaluatethe energy storage performance of these sensible heat thermalenergy storage system natural number friction factor are to befound using friction and Reynolds number and what fraction attemptand develop more functional relationship for natural number andfractional factorial using first order

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Chapter 1 Introduction 11 Background Due to increase in energy consumption a great deal of fossil fuels is being used This is a consequence of the present environmental problems such as global warming acid rain etc In order to decrease these problems the use of renewable energy sources is being promoted But the most freely available renewable energy source called as the mother of all energies the solar energy present the drawback that there is a mismatch between the energy demand and supply To cover this mismatch the use of phase change thermal energy storage systems is required Thermal energy storage proves to be an attractive and economical alternative for small medium and largescale use Energy is accumulated in a storage medium and the storage mechanism could be classified as sensible heat latent heat or chemical storage Latent heat storage is new area of study and it received much attention during the energy crisis of late 1970s and early 1980s where it was extensively researched for use in solar heating systems Although research into latent heat storage for solar heating systems continues it is increasingly being considered for waste heat recovery load levelling for power generation building energy conservation and air conditioning applications The interest in using renewable energy for producing electricity has risen with the potential threat of global warming due to greenhouse gas emissions and rising fuel prices Solar and wind power are such technologies that are considered an important part of the future electricity supply However for these technologies there is often a mismatch between energy demand and energy production Developing efficient technologies to store the harvested wind or solar power for use during high load is therefore considered an important part of making efficient systems with renewable energy sources 1 The highenergy storage density of phase change materials PCMs and the small temperature swing of PCMs make them especially interesting to be used in several different fields such as warming and cooling of buildings However due to the special characteristics of PCMs case specific studies need to be conducted for every possible use of PCMs to verify that PCM implementation in a certain system is economically justifiable 2 The researcher who wishes to do such an implementation in a system needs to look into the characteristics of the PCM such as what melting point and temperature range is required what container is compatible with the PCM and what would be a good heat exchanger for supplying efficient enough heat transfer so that energy can be extracted and inserted in the required time of the system 1 This work focuses the heat transfer enhancement in Latent heat thermal energy storage in domestic applications 12 Introduction to Energy Storage Technology The continuous increase in the level of greenhouse gas emissions and limited resources of Fossil fuels related to the climb in fuel prices are the main driving forces behind efforts to more effectively utilize various sources of renewable energy One of the options is to develop energy storage devices which are as important as developing new sources of energy The storage of energy in suitable forms which can conventionally be converted into the required form is a present day challenge to the technologists Energy storage not only reduces the mismatch between supply and demand but also improves the performance efficiency and reliability of energy systems and plays an important role in conserving the energy It leads to saving of premium fuels and makes the system more cost effective by reducing the wastage of energy and capital cost For example storage would improve the performance of a power generation plant by load levelling and higher efficiency would lead to better See Answer

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