Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 24 for “"Test Chamber"”.
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Optimizing Forced-Air Evaporative Cooling Chambers for Vegetable Preservation
… access and would benefit from a cooling chamber that can run off minimal energy and will cool produce quickly. To advance understanding of the technology, a test chamber of the forced air evaporative cooler has been designed and built. This chamber will be used to test key design …
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Equilibrium moisture content measurement for porous building materials at various temperatures
… and scanning data were obtained for three test materials at three different temperatures. These data resulted from further investigating the operating range of an existing experimental apparatus and procedure. During the course of the research, the operating range and control of the …
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An experimental apparatus for the measurement of sorption isotherms of moisture in porous building materials
An experimental apparatus and test procedure to measure the sorption isotherm of moisture in porous building materials was developed and tested for its reliability and accuracy. The apparatus shows excellent potential for determining reliable moisture storage property data. The data are used in …
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Bench-scale evaluation of an energy efficient acoustic aerosol purification device with a newly designed bioaerosol testing and evaluation chamber
… normal operation. Hence, it is important to test alternative low pressure drop (LPD) methods that treat indoor air streams to achieve high particle removal efficiencies while also achieving high operational stability. A bench-scale test chamber has been designed, assembled, and validated for …
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Predictive pre-cooling control for low lift radiant cooling using building thermal mass
… control optimization uses measured data from a test chamber, forecasts of controlled climate conditions and internal loads, empirical models of chiller performance, and data-driven models of the temperature response of the zone being controlled. These data and models are used to determine a …
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Non-uniform emission studies of a magnetron injection gun
… quality is very small; Design, fabrication, and testing in the gyrotron of a capacitive probe system divided into four quadrants to measure azimuthal asymmetries of the electron beam; Use of the capacitive probes to measure low-frequency (100 - 160 MHz) oscillations on the beam, the first …
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Study of natural ventilation in buildings with large eddy simulation
… data from a wind tunnel, a full-scale test chamber, and other research data have been used to validate the LES program. Methods have been developed to solve the problems encountered in validating LES models for natural ventilation studies. Studying the characteristics of different …
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Silicon-based pH sensor for biological and environmental applications
… fluidic channels for solution delivery and testing. Particularly for biological and environmental applications, the range of pH sensing is confined to 6 to 8. The fabricated device used n-type silicon, so only five acidic solutions between pH 5 and pH 7 were tested. Device test results …
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Advanced building skins : translucent thermal storage elements
… are explored through calculations, experimental testing and the creation of scaled models and a prototype element. For this purpose an environmental test chamber has been built on MIT's campus to evaluate the performance of new facade elements. The result of this study shows the potential for …
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The use of Chironomus riparius (Diptera: Chironomidae) in benthic toxicity tests and its response to selenium
… Develop a method for performing acute toxicity tests using Chironomus riparius. 2. Establish relationships between dry mass and selenium content, and between dry mass and selenium body burden. 3. Determine whether bioaccumulation or bioconcentration contributed more to the selenium content and …
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Microwave Interferometer and Refractometer for the WB-8 Polywell Fusion Device
The WB-8 chamber is an inertial electrostatic confinement device which is being tested by Energy Matter Conversion Corporation in an attempt to study the viability of their Polywell design as a source of fusion energy. One of the primary diagnostic tools will be a 94 GHz interferometer which will …
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Influence of initial turbulence intensity on the heat and moisture transfer through a recirculated air curtain
… equations for an air curtain at an opening of a test chamber. Eddy viscosity values as well as the jet development length were measured and used in the computer program in order to calculate the velocity, temperature and moisture concentration distributions in the air curtain. Experimental …
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Ignition delay study of next generation alternative jet fuels in a rapid compression machine
… blend of decane and trimethylbenzene (C-5) are tested through the study. A rapid compression machine at the University of Illinois at Urbana-Champaign is used for testing, with the direct test chamber charge preparation method. DTC configuration has advantages in avoiding thermal decomposition …
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Experimental and Theoretical Investigation of Flame Propagation Through Compositionally Stratified Methane -Air Mixtures
… mixture inflows into an optically accessible test chamber and its equivalence ratio distribution in the fresh mixture was measured with both acetone PLIF and Raman spectroscopy. For a flame propagating from stoichiometric to leaner methane-air mixtures, the flame speed was shown to be higher …
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Multispectral optical depth measurements in post-detonation high explosive fireballs
… explosives were detonated in a 2.18L explosive test chamber. Charges were 125mg or 250mg explosive output pellets, each detonated by an 80mg low density PETN initiating charge. The charge configurations were based on a modified RP-80 exploding bridgewire (EBW) detonator, which is manufactured by …
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Surface Resistance Measurements of Superconducting Niobium Samples with a Triaxial Cavity
… to bond the sample to the endplate of the test chamber. A new method using a screw bonded to the sample and a threaded hole in the endplate was designed to solve these problems. However, electromagnetic simulations indicated that losses from the backside of such a sample might be …
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Cartilage stress relaxation induced by intra-tissue transport of cationic nanoparticles : implications for post-traumatic osteoarthritis drug delivery
… relaxations, 100 [mu]M avidin was added to the test chamber to determine whether additional changes in the stress relaxation behavior occurred. The stress was monitored for 18 hours after the addition of avidin. In addition, real-time one-dimensional transport experiments were performed to …
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An air conditioning system for demonstration and research
… within the prescribed area, the air measurement chamber and fan will be mounted at a higher level. Ducts will carry air from the existing insulated test room to the unit and return conditioned air to the test room. A duct to extend from an existing roof opening will be large enough to carry 2000 …
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Development of a simulated natural carbonation test and durability of selected CEM II concretes
… the development of a simulated natural test for benchmarkingthe carbonation resistance of hardened concrete. The European Committee for Standardisation(CEN) had devised a draft simulated natural test and although initial Round Robin test results hadshown poor repeatability, the test had …
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Petrographic and petrophysical characterization of the Eagle Ford Shale in La Salle and Gonzales counties, Gulf Coast Region, Texas
… between hydrocarbon potential and foraminifera test chamber cementation was found. Well intervals where foraminifera test chambers are filled with kaolinite and secondary organic matter present higher oil-in-place (OIP) compared to those intervals where the test chambers are cemented with …
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