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Tests Characterizing Bioprocessor Hardware for Analytical Modeling
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English
Abstract
The tests outlined in this paper were used to characterize the hardware components of the Salad Machine, a small NASA-developed bioprocessor. The data from these tests are presented, and the methods by which this data can be integrated into system mathematical models are briefly discussed. The subsystems and physical processes discussed include the lighting system, the air loop (condensing heat exchanger and the blower), heat transfer to the surroundings, and leakage.
Through this effort it was learned that in the development of a test protocol, care should be taken to order the tests such that environmental parameters, particularly humidity, require as few large adjustments as possible. Sensor calibration and installation take a substantial amount of time, which should be built into the test schedule. Two properties were particularly hard to quantify: the air flow rate and the energy from the lighting system entering into the growth volume. Flow rate can be measured using the appropriate device for the system configuration and airflow. Lighting system radiation level was measured using three methods. The results of these methods varied substantially, putting off conclusive quantification of this value.
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Citation
Gustavino, S. and McCormack, A., "Tests Characterizing Bioprocessor Hardware for Analytical Modeling," SAE Technical Paper 921357, 1992, https://doi.org/10.4271/921357.Also In
References
- Knott, W.M. Controlled Ecological Life Support System Breadboard Project-1988 CELSS 1989 Workshop MacElroy R.D. NASA TM 1989
- Kliss, M. MacElroy, R.D. Salad Machine: A Vegetable Production Unit for Long Duration Space Missions International Conference On Environmental Systems (Paper 901280 ) July 1990
- DeWitt, D.P. Incropera, F. P. Fundamentals of Heat and Mass Transfer 2nd John Wiley and Sons Inc. New York, NY 1985
- Roberson, J. A. Crowe, CT. Engineering Fluid Mechanics 2nd Houghton Mifflin Co. 1980
- Kreith, F. Principles of Heat Transfer 3rd Harper & Row San Francisco 1973
- Bubenheim, D.L. Bugbee B. Salisbury F. B. Radiation in Controlled Environments Influence of Lamp Type and Filter Material, J. Amer. Soc. Hort. Sci. 1988