Lead Performer: Oak Ridge National Laboratory – Oak Ridge, TN
July 5, 2023
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Lead Performer: Oak Ridge National Laboratory – Oak Ridge, TN
Partner: Aeroshield Materials
DOE Total Funding: $240,000
Cost Share: $60,000
Project Term: October 1, 2021 – March 31, 2023
Funding Type: CRADA
Project Objective
The widespread deployment of advanced materials with unique characteristics, particularly in applications like refrigeration, plays a pivotal role in achieving a net-zero greenhouse gas (GHG) energy economy. Commercial refrigeration systems, responsible for 57% of a supermarket's total electricity consumption, should play a significant role in this transition. While doored display cases offer an efficient approach, the transfer of heat through transparent doors imposes an extensive load.
Silica aerogels, a porous nanostructured form of silicon dioxide and the most common type of aerogel, have garnered attention for their low thermal conductivity and visible transparency. Various researchers have explored their potential for developing highly energy-efficient windows, but their application in commercial refrigeration systems has seen limited effort. Challenges arise due to the extreme operating conditions, severe thermal gradients, and cyclic mechanical stresses that can impact the performance of these highly brittle materials. Successfully deploying aerogels in commercial refrigeration systems necessitates a deep understanding of both refrigeration operations and the thermal and mechanical properties of aerogels. The project is focused on the development and performance evaluation of ultra-clear insulation for display case doors for refrigeration systems. The proposed solution will enable at least 15% reduction in overall energy consumption due to improved thermal insulation.
Project Impact
This project closely aligns with the DOE's strategic objective of achieving a 50% reduction in emissions by 2050. Additionally, it will drive the advancement of windows designed for building applications. Aeroshield Materials has established an extended program to assess the latest developments in advanced window materials, and they have also created a comprehensive framework, especially for the controlled environmental applications of commercial refrigeration, such as display cases.
Contacts
DOE Technology Manager: Payam Delgoshaei
Lead Performer: Cheng-Min Yang