- BENEATH A STEEL SKY FAILED TO FEED ORIFICE FULL
- BENEATH A STEEL SKY FAILED TO FEED ORIFICE VERIFICATION
A secondary benefit of the reduction of turbulence is the reduction of vibration and up to 15 times less acoustic noise generation. Relative to the standard orifice-plate flow meter, the balanced flow meter introduces less turbulence and two times less permanent pressure loss and is therefore capable of offering 10 times greater accuracy and repeatability with less dissipation of energy. A balanced flow meter can be used to measure the flow of any of a variety of liquids or gases, provided that it has been properly calibrated. A balanced flow meter can be easily mounted in a flow path by bolting it between conventional pipe flanges. These flow meters are highly accurate, minimally intrusive, easily manufacturable, and reliable.
BENEATH A STEEL SKY FAILED TO FEED ORIFICE FULL
The VRO was confirmed to effectively cover the full test range of the flow rate.īalanced Flow Meters without Moving Partsīalanced flow meters are recent additions to an established class of simple, rugged flow meters that contain no moving parts in contact with flow and are based on measurement of pressure drops across objects placed in flow paths. In this study, H-Q curve of the pump using the VRO revealed a similar trend to the result from two ROs. In the RCPTF in KAERI, the performance tests and various kinds of transient tests of the RCP were successfully performed. To increase the efficiency of the flow control availability of the test facility, the variable restriction orifice (VRO) type flow control valve was designed and manufactured. Due to flow disturbnace, it is to cause an error when measuring RCP head and flow measurement of the venturi flow meter installed in the lower main pipe line, and thus leading to a decrease in measurement accuracy as a result. When the pressure loss of the valve side is smaller than that of the RO side, the flow rate of valve side was increasing and the flow disturbance was occurred in the lower pipe line. In the branch pipe line, a globe valve and a butterfly valves for regulating the flow rate was located on the each branch line. In the main pipe, a flow restrictor (RO: Restriction Orifice) for limiting the maximum flow rate was installed. Two- branch pipe (Y-branch) was installed to regulate the flow rate in the range of performance tests. After a commissioning startup test was successfully perfomed, mechanical structures are improved including a flow stabilizer and variable restriction orifice.
BENEATH A STEEL SKY FAILED TO FEED ORIFICE VERIFICATION
In the RCPTF, various types of tests can be performed including a hydraulic performance test to acquire a H-Q curve as well seal transient tests, thrust bearing transient test, cost down test, NPSHR verification test, and so on.
C, 11.7 m/s, and 13 MW in the maximum pressure, temperature, flow rate, and electrical power, respectively. The design values of the RCPTF are 17.2 MPa, 343. The Performance Test for Reactor Coolant Pump (RCP) adopting Variable Restriction Orifice Type Control ValveĮnergy Technology Data Exchange (ETDEWEB) The lowest thermal resistance was 5.25Â☌/W and the highest Nusselt number was 13.39 at heat dissipation of 9W and driven frequency of 8Hz. The results showed that the Nusselt number increased and thermal resistance decreased with both frequency and Reynolds number. The cooling performance of synthetic jet at several driven frequencies from 0 Hz to 8 Hz and heat dissipation between 2.5W and 9W were also investigate in the present study. The optimum compressed air supplied pressure of the synthetic jet study was 4 bar. The maximum air velocity was 0.5 m/s and it occurred at frequency motion of 8 Hz. The air velocity of the synthetic jet was measured by using anemometer air flow meter. Frequencies of synthetic jet and the compressed air pressure supplied to the pneumatic cylinder (1bar to 5bar) were the parameters of the flow measurement. The velocity profile at the end of the orifice was measured and used as characteristic performance of synthetic jet in the present study. In this paper, the experiment investigation of the cooling performance of pneumatic synthetic jet with single slot rectangular orifices at low frequency motion is presented.
Synthetic Jet generates turbulence flow in cooling the microelectronic devices. Yu, Roger Ho Zhen Ismail, Mohd Azmi bin Ramdan, Muhammad Iftishah Mustaffa, Nur Musfirah binti Experimental study of cooling performance of pneumatic synthetic jet with singular slot rectangular orifice
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