A Proposal of an Electrically Driven Press for Producing Monolithic Aerogel and Control System Simulation
摘要
The improvement of silica aerogel monolith production is of great importance to address global environmental efforts (SDG12). Aerogel monoliths possess exceptional properties, such as thermal insulation and transparency, making them a promising future alternative for windows and hollow walls, offering significant energy savings in urban industries (SDG11), improving the design, technologies and materials. These benefits and various other applications make aerogels a valuable investment for addressing future environmental challenges. This paper proposes the design of a new press for producing silica aerogel monoliths via the rapid supercritical extraction method, aiming to reduce energy consumption, enable the formation of higher-quality, crack-free monoliths, and optimize the production process through a controlled cycle (SDG9). Typically, presses used for this purpose are hydraulically operated and controlled in an open loop. In the paper a model of the production process with a open-loop control has been developed and validated using experimental data and a new press has been proposed with an electrically driven ball screw having a closed-loop control system. Model-based simulations demonstrate the new press’s improved energy efficiency.