recirculation flow and pressure distributions in a
US20050235649A1
In addition the gas turbine includes a recirculation flow path ( 64 ) receiving a recirculation portion (e g 62 ) of the compressed air and conducting the recirculation portion into the inlet air upstream of the compressor to heat the inlet air US20050235649A1 - Method for operating a gas turbine -
A Continuous Flow Cell for High‐Temperature/High‐Pressure
distributions electrolyte leakage and ultimately corrosion of reactor parts like the current collectors Electrode materials with low permeability such as vitreous carbon[11 12] or metal electrodes[15] are typically selected instead for operation under pressure Cylindrical shaped "pipe cell" flow
ThermoBloc recirculation and distribution unit series 281
When the mixed flow to the boiler temperature Tmix is greater than the set point of the boiler protection recirculation and distribution unit by approximately 18F (10C) the bypass flow from the boiler port closes and water returns to the boiler at the same temperature as the return flow from the system (fig 3)
Does an Open Recirculation Line Affect the Flow Rate and
The objective of this study is to evaluate the impact of an open or closed recirculation line on flow rate circuit pressure and hemodynamic energy transmission in simulated neonatal extracorporeal life support (ECLS) systems The two neonatal ECLS circuits consisted of a Maquet HL20 roller pump (R
P0401 Code: Exhaust Gas Recirculation (EGR) Flow
Apr 24 2020For example in some applications the PCM monitors the O2 sensor signal while in others it might look at a differential pressure sensor or a manifold absolute pressure sensor signal If by looking at this data the PCM determines there is insufficient EGR flow it will set the OBD-II code P0401
Understanding pump recirculation
Discharge recirculation is the reversal of flow at the discharge tips of the impeller vanes Resulting vortices cavitate and usually attack the pressure side of the vanes In general the capacity at which suction recirculation occurs is directly related to the design suction specific speed of the pump
Impact of Flue Gas Recirculation on Distributions of
bed pressure (ca 7 0kPa) and also under excess air ratio in the range of 1 21-1 30 3Furthermore the recirculation flue gas mass flow (20 5 m n s-1) and the ratio of secondary air to the primary air (0 11-0 33) were considered as experimental variables Measurement data for FGR test run was compared with data from the others tests
General Electric Systems Technology Manual Chapter 2 4
2 4 3 4 2 Recirculation Flow Measurement Individual recirculation loop flow is determined by using the relationship that flow is proportional to the square root of the differential pressure Each recirculation loop contains a venturi (flow element) between the recirculation pump discharge valve and the distribution manifold (Figure 2 4-3)
Pressure coefficient
The pressure coefficient is a dimensionless number which describes the relative pressures throughout a flow field in fluid dynamics The pressure coefficient is used in aerodynamics and hydrodynamics Every point in a fluid flow field has its own unique pressure coefficient In many situations in aerodynamics and hydrodynamics the pressure coefficient at a point near a body is independent of
Domestic Hot Water Recirculation Part 4: Pump Sizing Example
Aug 18 2014With this information we can complete our calculation to determine the necessary recirculation flow rate required to overcome the heat loss in this particular system Since 1 gpm will convey 5000 BTUH at a 10F ∆T the recirculation flow rate is: 9320 BTUH/5000 = 1 87 gpm Size the Recirculation Return Line
Investigation on inlet recirculation characteristics of
The inlet recirculation characteristics of double suction centrifugal compressor with unsymmetrical inlet structures were studied in numerical method mainly focused on three issues including the amounts and differences of the inlet recirculation in different working conditions the circumferential non-uniform distributions of the inlet recirculation the recirculation velocity distributions
Flow Over a Circular Cylinder
If the pressure decreses in the direction of the flow the pressure gradient is said to be favorable From the pressure distribution measured in an earlier experiment the pressure is a maximum at the stagnation point and gradually decreases along the front half of the cylinder a recirculation region exists with a strong reversing flow
Relationship Between Pressure Drop and Flow Rate in a
The graph below shows the resulting pressure drop for water at 60 F over a range of flow rates for a 100 foot long pipe for both 4 inch and 6 inch schedule 40 piping Summary To determine the total change in the static pressure of a fluid as it flows along a pipeline all three components of the Bernoulli Equation must be considered
Design Options for HVAC Distribution Systems
using a common duct distribution system that feeds all terminal apparatus As shown in the figure outdoor air (OA air) for ventilation and recirculated air (RA air) are mixed in the required proportions using the dampers and the mixed air is made to flow through a cooling and dehumidifying coil a heating coil and a humidifier using a an
Automatic Recirculation Valves
Automatic Recirculation Valves protect centrifugal pumps from damage that may occur during low-flow operations Minimum flow protection is accomplished with an automatic modulating bypass that assures smooth pump operation between the minimum and maximum flow point on the pump curve
Prediction on Turbulent Flow of Two Parallel Plane Jets
In the present study computational details of two parallel plane jets with nozzle separation ratio = 4 25 and Re = 11 000 are presented A study of the turbulence has also been done The computational domain size grid resolution and different discretization schemes on the predictions are discussed The existence of a recirculation flow region a merging region and a combined region in the
Pressure Distribution Orifice Pipe Pump Sizing
Required Flow Rate (Imp gal/min) Required Pressure Head (ft) From P11 From P10 Use pressure head from P10 to find flow from Extended Table A 1 B 1 Size of Drain Back Orifice Step 13) Consider the pumping demands of the system If they are considered excessive redesign the pressure distribution system and recalculate the pump demands
The Calculation of the Pressure Distribution over the
flow The question of what aerofoil shapes and pressure distributions may be desirable is not considered 2 The Two-dimensional A erofoil at Zero Lift --2 1 General Relations --The aim of this and the following section is to calculate the pressure distribution
Design Options for HVAC Distribution Systems
using a common duct distribution system that feeds all terminal apparatus As shown in the figure outdoor air (OA air) for ventilation and recirculated air (RA air) are mixed in the required proportions using the dampers and the mixed air is made to flow through a cooling and dehumidifying coil a heating coil and a humidifier using a an
Understanding pump recirculation
Discharge recirculation is the reversal of flow at the discharge tips of the impeller vanes Resulting vortices cavitate and usually attack the pressure side of the vanes In general the capacity at which suction recirculation occurs is directly related to the design suction specific speed of the pump
Pressure Distribution Orifice Pipe Pump Sizing
Required Flow Rate (Imp gal/min) Required Pressure Head (ft) From P11 From P10 Use pressure head from P10 to find flow from Extended Table A 1 B 1 Size of Drain Back Orifice Step 13) Consider the pumping demands of the system If they are considered excessive redesign the pressure distribution system and recalculate the pump demands
INSTANTANEOUS PRESSURE DISTRIBUTION ON SQUARE
pressure is expected In order to investigate this feature instantaneous flow fields adjacent to the cylinder and pressure distributions on the surface were considered A sequence of pressure distributions on the upper wall of the cylinder is shown in Fig (4) each of which corresponds to the frames 1 and 5 The figures also include surface
How do you calculate flow from a pressure measurement?
Jun 26 2017For fluid flow measurements orifice plates venturi tubes and nozzles simplify the use of differential pressure (ΔP) sensors to determine the flow rate In these cases the flow is related to ΔP (P1-P2) by the equation: q = c D π/4 D 2 2 [2(P 1-P 2) / ρ(1 – d 4) ] 1/2 Where: q is the flow in m 3 /s







