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 7 of 7 for “"Expansion Device"”.
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Quantification and analysis methods aimed at the reduction of flow induced noise in the expansion device
Embargo set by: Colleen Fallaw for item 102686 Lift date: 2019-08-10T21:25:30Z Reason: Author requested closed access (OA after 2yrs) in Vireo ETD system
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Experimental and analytical investigation of refrigerant and lubricant migration
… To employ the Mix and Sample Technique a device-called the Mix and Sample Device-was built. A method to separate the refrigerant and lubricant was developed with an accuracy-after separation-of 0.04 grams of refrigerant left in the lubricant. When applying the three techniques, the total …
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Investigation of refrigerant flow-induced noise characteristics and mitigation approaches
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2026-12-01
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Fault Detection And Diagnosis For Air Conditioners And Heat Pumps Based On Virtual Sensors
… is relatively independent of compressor and expansion valve faults that influence mass flow rate. The third model was developed using an empirical correlation for thermal expansion valves (TXV) and electronic expansion valves (EEV) based on an orifice equation.</p> <p>To assess the impact of …
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Long-Term stability of the correction of the unilateral posterior crossbite
… of patients treated either with rapid maxillary expansion (RME) or with slow expansion devices in the early (mean age: 7.2 years) or in the late mixed dentition (mean age: 9.9 years).<br>One hundred patients were selected from the files of the Department of Orthodontics, School of …
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Flash gas bypass - a way to improve distribution of adiabatic two-phase refrigerant flow in headers of microchannel evaporators
… of vapor-liquid refrigerant immediately after an expansion device in a compact T-junction and design options to enhance its performance; 2) effects of bypassing the flash vapor and header pressure drop induced flow maldistribution on heat transfer performance of microchannel evaporators; 3) …
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Thermal Microactuators for Microelectromechanical Systems (MEMS)
… of the groups used the geometrically constrained expansion of various segments to produce their deflection. The first group, Thermal Expansion Devices (TEDs), produced a rotational displacement and had deflections up to 20 µm. The second group, Bi-directional Thermal Expansion Devices (Bi-TEDs) …