[PDF] Top 20 Saturated flow boiling heat transfer of R-410A and associated bubble characteristics in a narrow annular duct

... Bubble characteristics Mini-channel a b s t r a c t Experiments are conducted here to investigate how the channel size affects the R-410A saturated flow ... See full document

... the saturated temperature by adjusting the water–glycol temperature and flow ...rate. In addition, we adjust the thermostat temperature in the water loop to stabilize the refrigerant ... See full document

... size affects the R-407C saturated flow boiling heat transfer and asso- ciated bubble characteristics in a horizontal narrow annular ... See full document

... the saturated flow boiling heat transfer characteristics of ozone friendly refrigerant R-410A in a horizontal annular finned ...the ... See full document

... size affects the subcooled flow boiling heat transfer and associated bubble characteristics of refrigerant R-134a in a horizontal ... See full document

... diameter of 20.0 mm. Its wall is 4.0 mm thick. Both ends of the pipe are connected with copper tubes of the same size by means of flanges and are sealed by ...thick and is 0.41 m ... See full document

... t r a c t An experiment is conducted here to investigate the effects of the imposed time periodic refrigerant flow rate oscillation in the form of nearly a triangular wave on ... See full document

... By and large, in the oscillatory subcooled flow boiling investi- gated here the effects of the imposed heat flux and mean refriger- ant mass flux, saturation temperature and ... See full document

... Energy and Resources Laboratories, Industrial Technology Research Institute, Hsinchu, Taiwan Received 8 June 1999; received in revised form 6 September 1999 Abstract Experiments were carried out to ... See full document

... contains a variable-speed re- frigerant pump that delivers the subcooled refrigerant to the ...change of the inverter ...valve in the flow path from the refrigerant ...pump and preheater with ... See full document

... 4.3. Characteristics of R-134a evaporating flow in narrow annular duct In addition to the heat transfer data presented above, the pho- tos ... See full document

... Bubble characteristics Heat flux oscillation a b s t r a c t An experiment is carried out here to investigate the transient oscillatory boiling heat transfer ... See full document

... flow boiling heat transfer and associated bubble characteristics of FC-72 on a heated micro-pin-finned silicon chip flush-mounted in the bottom of ... See full document

... flow boiling heat transfer and associated bubble characteristics of FC-72 on a heated micro-pin-finned silicon chip flush-mounted in the bottom of ... See full document

... lid of the test section right above the ...shown in Fig. 2 consists of a hollow cylindrical Teflon block, a cylindrical Teflon bolt, a silicon chip, a copper plate, two ... See full document

... evaporation and condensa- tion heat transfer coefficients and frictional pressure drops for R-134a in a vertical ...evaporation heat transfer for ... See full document

... Plate heat exchangers 共PHEs兲 have been widely used in food processing, chemical reaction processes and many other industrial applications due to their high effectiveness, compactness, flexibil- ity, ... See full document

... Abstrae~A combined flow visualization and conjugated heat transfer analysis was carried out to study the axial evolution of the buoyancy induced secondary vortex flow in a mixed[r] ... See full document

... increased in small steps during the test run. The voltages across the heater and the current val- ues converted from the DC power supply were recorded by the data acquisition system, and the power ... See full document

... Before a test is started, the system temperature is compared with the saturation temperature of refrigerant R-134a or R-407C corresponding to the measured satu- ration pressure ... See full document