Thermal energy storage technologies and systems for concentrating solar power plants

Effect of fluid dispersion coefficients on particle-to-fluid mass transfer coefficients in packed beds. correlation of sherwood numbers

Effect of fluid dispersion coefficients on particle-to-fluid heat transfer coefficients in packed beds

Thermal energy storage (TES) is a technology that stocks thermal energy by heating or cooling a storage medium so that the stored energy can be used at a later time for heating and cooling applications and power generation TES systems are used particularly in buildings and in industrial processes This paper is focused on TES technologies that provide a way of valorizing solar heat and reducing the energy demand of buildings The principles of several energy storage methods and calculation of storage capacities are described Sensible heat storage technologies, including water tank, underground, and packed-bed storage methods, are briefly reviewed Additionally, latent-heat storage systems associated with phase-change materials for use in solar heating/cooling of buildings, solar water heating, heat-pump systems, and concentrating solar power plants as well as thermo-chemical storage are discussed Finally, cool thermal energy storage is also briefly reviewed and outstanding information on the performance and costs of TES systems are included

A Comprehensive Review of Thermal Energy Storage

Application of phase change materials for thermal energy storage in concentrated solar thermal power plants: A review to recent developments

If a liquid, initially at uniform temperature, passes lengthwise through a right, porous prism, initially at some other uniform temperature, the sides of the prism being adiabatic and impervious to the liquid, then the temperatures of both liquid and solid will be functions of the time and of a distance. The problem of finding the temperature distributions has been solved assuming the well-known laws governing the transfer of heat from a liquid in turbulent motion to a solid. The solution as presented involves the use of some interesting mathematical functions which are related to the well-known Bessel Functions. If a gas is used instead of a liquid, the problem is much more complicated, but a dimensional method of treating the problem leads to results which may be very useful in practice. The author wishes to express his thanks and appreciation to Dr. S. Y. Burke for suggesting this research and showing such a stimulating interest during its development, and also to the Combustion Utilities Corporation for permission to publish the results.

T.E.W. Schumann

Papers

Heat transfer: A liquid flowing through a porous prism