An experimental study on geysering phenomena induced by buoyancy in a heating system

Experimental investigation of effective parameters on geyser periodicity in a vertical heated system

“…Thus, the decrease of the differential pressure and a pressure strike accompanied with a sudden drop in temperature indicate the generation of a geysering phenomenon. A dimensionless number defined by Tong et al [11] describes the information of the geysering process. Therefore, in this work the dimensionless number Ge ⁄ defined as the ratio of normalized pressure difference to the relative temperature difference in the vertical riser channel has been used.…”

“…Some conditions such as a reduction in heat generation rate, driving force caused by temperature difference or an increase in flow resistance, either intended or not -may result in flow stagnation, leading to an interesting phenomenon of geysering effect. This kind of flow instability named geysering is often observed in a vertical heated channel with long unheated section downstream from the heated section, in which there is little or no circulation in the system [11,12]. boiling and the fall back of the subcooled liquid.…”

Influence of graphene oxide nanofluids and surfactant on thermal behaviour of the thermosyphon

“…Geyser boiling is a kind of instantaneous boiling where the working fluid gathered above a bubble is propelled to the condenser section [35,36]. The problem of geyser boiling often remained unnoticed, and there were only a few mentions of it in the available literature [37][38][39][40]. There is only one study of geyser boiling occurring in thermosyphons filled with gold nanofluids [41], and no study on graphene oxide nanofluids.…”

An experimental study of the role of subsurface plumbing on geothermal discharge

“…The importance of heat flux and steam condensation on geysering has been documented [e.g., Goodykoontz and Dorsch , ; Boure et al ., ; Casarosa et al ., ; Aritomi et al ., ; Marcel et al ., ]. Other parameters also affect the geysering process: the water level and geometry of the vessel, as well as pressure and temperature differences driving water flow and heat transport [ Lin et al ., ; Tong et al ., ; Chen et al ., ]. Multiple water sources are also inferred from theoretical studies [ Steinberg et al ., ] and laboratory experiments based on the two water source model or reuse of erupted water show how recharge of cold water can stop boiling and hence permits irregular discharge [ Steinberg et al ., ; Toramaru and Maeda , ; Adelstein et al ., ].…”

“…The importance of heat flux and steam condensation on geysering has been documented [e.g., Goodykoontz and Dorsch, 1967;Boure et al, 1973;Casarosa et al, 1983;Aritomi et al, 1993;Marcel et al, 2010]. Other parameters also affect the geysering process: the water level and geometry of the vessel, as well as pressure and temperature differences driving water flow and heat transport [Lin et al, 1995;Tong et al, 2014;Chen et al, We measured the pressure and temperature of the water at a frequency of 100 Hz in most experiments using a HIOKI 8430 data logger with one pressure sensor (XPM10 from Measurement specialties) with an accuracy of <0.25% of full range, corresponding to 100 Pa for 40 kPa, and K-type thermocouples with an accuracy of $18C around 1008C. Only for experiment 0-8, the sampling frequency was 10 Hz.…”