Wednesday, June 17, 4:00 PM - 5:30 PM

Tutorial

Session Chairs:
Natalie Smith,
. .,

Presentations

Note: Presentations may start a few minutes before the time listed in the schedule.

Presenters:

o Natalie Smith, Southwest Research Institute
o Joshua Schmitt, Southwest Research Institute
o David Sanchez, Universidad de Sevilla

Abstract:

This tutorial provides an overview of various thermal long-duration energy storage technologies including thermal and mechanical systems, among others that either commercially exist or are under development for meeting daily (10+ hours) to seasonal energy storage requirements in various clean energy scenarios. The tutorial will outline the challenge battery technologies have meeting the longer duration storage needs and contrast that with the advantages of many machinery-based energy storage technologies. Technology overviews will include fundamental working principles, representative hardware items, role of turbomachinery, a summary research and development challenges, and current demonstration efforts. Some of the technologies covered for thermal energy storage are electrified thermal, pumped thermal, and liquid air.

In several instances, the ability for thermal energy storage technologies to produce heat is a valuable feature of these systems beyond the energy storage. This tutorial will present the fundamental operation principles of heat pumps and an array of pumped thermal energy storage technologies. The state-of-the-art solutions for each will be discussed with a broad perspective spanning industries, use cases, features, continued research and development needs, and applications worldwide. High-temperature heat pumps include challenges for new turbomachinery development, working fluid assessments, and heat exchanger technology. Pumped thermal energy storage encompasses the heat pump challenges as more with various storage media options, thermoclines, various working fluids, and machinery requirements.