Reducing heat loss of fluids in heavy oil wellbore using two-phase closed thermosyphon sucker rod

Two-phase closed thermosyphons: A review of studies and solar applications

“…Wu et al [90] investigated a stainless steel TPCT with evaporator and condenser lengths of 3 and 2 m, respectively, using R134a as a working fluid for cooling data centers. A large length TPCT (d i =11 mm and L=5000 mm) has been experimentally investigated by Zhang and Che [91]. They experimentally investigated also the applicability of the TPCT (L=17 m) in cyclic steam stimulation for heavy oils.…”

Developing kilometers-long gravity heat pipe for geothermal energy exploitation

“…49,50 The SLGHP is essentially a highly efficient heat transport device, which can be also used in industrial scenarios, other than geothermal energy production, for instance, underground coal fire control 51 and heavy oil mining. 52,53…”

Analysis and Applications of the Two Phases Closed Thermosyphon Technology in the Highways in Permafrost Regions: A Review

“…Through the constant vaporization of the mass of heat absorption-condensation and exothermic, a steady stream of heat pipe evaporation section occurs near the heat transfer to the condensing section. As long as there is a temperature difference between the condensing section and the evaporating section, the heat pipe will continue this cycle of heat transfer [11,20,21]. In addition, the concept of equivalent thermal resistance [23] is mentioned in order to facilitate the calculation and simulation of heat pipes.…”