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1	REDUCING SIZE AND COST OF BIOWALL CONTROL SYSTEM Daniel Andres Allocca Kajsza (6630392) 12 October 2021 (has links) <div>The control system of the Purdue Biowall (the botanical air filter) prototype has been targeted for replacement to improve the potential for commercialization. This thesis is focused on evaluating and improving the performance of a new control system based on a single board computer, which is slated to replace a much larger and more expensive Building Automation System that is currently being used. This analysis considers size, cost, accuracy of sensors, and data logging.</div><div>The research was conducted in three phases. Initially, an evaluation of an existing control prototype was conducted and several critical hardware failures were identified. Some of the most significant malfunctions were caused by broken wires, incorrect power supply voltage, and a short circuit due to poor soldering. The second phase of work involved improving the hardware and software for the control platform. All the problems found were fixed to make the control system completely operational. Moreover, a Printed Circuit Board (PCB) was designed to replace the breadboard previously used. The third phase of work was evaluating the performance of the new control system. Evaluations at a component level (e.g. individual sensors) and the overall system (e.g. including Biowall control algorithm) were conducted.</div><div>After a complete assessment, it was determined that a cheaper and smaller single board computer control system is able to substitute for the current Building Automation System. The accuracy of the sensors and the data collection were within the values expected. The physical size and cost of the controller was reduced by a factor of 30. The results obtained have identified several areas where further improvement is still needed. An efficient data logging code, replacement of wires, and PCB enhancement are still needed before deploying the new control solution into a building.</div> Technology not elsewhere classified Biowall Botanical air filtration
2	The Biowall Field Test Analysis and Optimization Jacob J. Torres (5930906) 14 May 2019 (has links) <div> <p>A residential botanical air filtration system (Biowall) to investigate the potential for using phytoremediation to remove contaminants from indoor air was developed. A full scale and functioning prototype was installed in a residence located in West Lafayette, Indiana. The prototype was integrated into the central Heating, Ventilating, and Air Conditioning (HVAC) system of the home. This research evaluated the Biowall operation to further its potential as an energy efficient and sustainable residential air filtration system.<br></p> <p> </p> <p>The main research effort began after the Biowall was installed in the residence. A field evaluation, which involved a series of measurements and data analysis, was conducted to identify treatments to improve Biowall performance. The study was conducted for approximately one year (Spring 2017-Spring 2018). Based on the initial data set, prioritization of systems in need of improvement was identified and changes were imposed. Following a post-treatment testing period, a comparison between the initial and final performances was completed with conclusions based on this comparison. </p> <p> </p> <p>The engineering and analysis reported in this document focus on the air flow path through the Biowall, plant growth, and the irrigation system. The conclusions provide an extensive evaluation of the design, operation, and function of the Biowall subsystems under review.</p> </div> <br> Botany CAD/CAM Systems Metals and Alloy Materials Engineering not elsewhere classified Simulation and Modelling Computational Logic and Formal Languages Engineering Design Methods Engineering Systems Design Additive Manufacturing Botanical air filtration Building Automated System BAS Biowall phytoremediation. Sick Building Syndrome Controlled Environments NCERA-101 Six Sigma whirlpool ReNEWW Home plant growth experiment irrigation system Air Flow Distribution Characteristics Air Flow growth media experiments Plant Growth in Controlled Environments NASA Residential Air Filtration HVAC Automated Logic

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REDUCING SIZE AND COST OF BIOWALL CONTROL SYSTEM

The Biowall Field Test Analysis and Optimization