Cryosurgery is a technique for destroying undesirable tissue, such as cancers, by exposing it to a very low temperature. This paper presents a thermodynamic modeling tool that has been developed for a two stage, mixed gas Joule-Thomson (MGJT) cryoprobe used for cryosurgery. A conventional vapor compression (VC) cycle using a pure refrigerant precools the MGJT cycle providing refrigeration at th...

An accurate temperature profile of the multi-stage fractured horizontal well is foundation production interpretation using distributed sensing. In this paper, an oil-water two-phase flow prediction model considering stress sensitivity effect and Joule–Thomson constructed. Based on simulation calculation, wellbore variation under different formation parameters, water cuts, fracture parameters di...

Assessment of the natural gas specific humidity is necessary for technological calculations in production, treatment, and transportation gas. As well as knowledge dynamics allows you to calculate consumption hydrate inhibitors before their injection into wells. In this paper, bottomhole zone hole wells depending on temperature pressure have been investigated. The computational experiment was ca...

Heat exchangers play an important role in the performance of thermal machines, namely, electric power generators, engines and refrigerators. Regarding thermoelectrics, this influence is even higher, owing to the difficulty of transferring heat from the small surface area of a typical thermoelectric module to a bigger one. Particularly, in the hot face of an average 40 mm x 40 mm Peltier module,...

The article presents a study of the origin extra harmonics in frequency spectrum thermocouple output signal when being heated by sinusoidal waveform current. It is natural to have first harmonic, which arises according Ohm’s law, as product current and total resistance junction conductors, well Peltier, Thomson effects, presence second caused heating conductors. fact that third higher arise con...

The present study investigates Joule heating in piezoresistive microcantilever sensors. Joule heating and thermal deflections are a major source of noise in such sensors. This work uses analytical and numerical techniques to characterise the Joule heating in 4-layer piezoresistive microcantilevers made of silicon and silicon dioxide substrates but with the same U-shaped silicon piezoresistor. A...

C ryotherapy, or the use of freezing temperatures to elicit a specific tissue response, has a long history of safe and effective use in medicine. Cryothermal ablation results in discrete homogenous lesions that are sharply demarcated, with preserved ultrastructural tissue integrity and low propensity for thrombosis. Its unique safety profile is well established. Although cryoenergy has been use...