JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

Overview

Course objectives:

• To Understand the Necessity of Thermal Storage – Types-Energy Storage Devices
• To Understand Sensible Heat Storage System.
• To Know Parallel Flow and Counter Flow Regenerators.
• To Gain Knowledge about specific areas of Application of Energy Storage.
• Latent Heat Storage Systems.

Course Outcomes

At the end of the course, students will be able to

• state the types-energy storage devices – comparison of energy storage technologies.
• Identify and describe Basic concepts and modeling of heat storage units - modeling of simple water and rock bed storage system.
• Explain at a level understandable by a non-technical person how various Parallel flow and counter flow regenerators.
• Calculate phase change problems.
• Explain greenhouse heating – power plant applications – drying and heating for process industries.

UNIT - I

Introduction: Necessity of thermal storage – types-energy storage devices – comparison of energy storage technologies - seasonal thermal energy storage - storage materials.

UNIT - II

Sensible Heat Storage System: Basic concepts and modeling of heat storage units - modeling of simple water and rock bed storage system – use of TRNSYS – pressurized water storage system for power plant applications – packed beds.

UNIT - III

Regenerators: Parallel flow and counter flow regenerators – finite conductivity model – non – linear model – transient performance – step changes in inlet gas temperature – step changes in gas flow rate – parameterization of transient response – heat storage exchangers.

UNIT - IV

Latent Heat Storage Systems: Modeling of phase change problems – temperature-based model - enthalpy model - porous medium approach - conduction dominated phase change – convection dominated phase change.

UNIT - V

Applications: Specific areas of application of energy storage – food preservation – waste heat recovery – solar energy storage – green house heating – power plant applications – drying and heating for process industries.

TEXT BOOK:

• 1. Ibrahim Dincer and Mark A. Rosen, Thermal Energy Storage Systems and Applications, John Wiley & Sons 2002.

REFERENCE BOOKS:

• 1. Schmidt. F. W and Willmott. A. J, Thermal Storage and Regeneration, Hemisphere Publishing Corporation, 1981.
• 2. Lunardini. V. J, Heat Transfer in Cold Climates, John Wiley and sons 1981.