Afösr 5440 Furtvier Devel0b4emt of a Grawite Heater for High Wessure Nitrogen Operation
نویسنده
چکیده
An experimental study was conducted to extend the operation of a graphite resistance nitrogen heater to pressures dbove the 1000 psl previously obtained. Using a somewhat modified design, a single pass spiral heater element was fabricated and tested at 5000 psl and 5000 R. Test runs of 5 to 15 minutes were carried out with total operating times at elevated temperatures and pressure exceeding several hours using the same elerrcent. The temperature was determined by the mass flow technique and checked against a thermocouple Installed in the stagnation chamber.
منابع مشابه
Efficiency Analysis of a High-temperature Superconducting Induction Heater
In an induction heater for heating of aluminum billets, the main reason for using high-temperature superconducting (HTS) tapes instead of conventional copper conductors is to reduce the large power losses in the induction coil. In this work we present how to calculate the different loss contributions of an induction heater based on HTS tapes. Calculations of these losses are used in the design ...
متن کاملThermal Behavior of a New Type of Multi-Layered Porous Air Heater
Based on an effective energy conversion method between gas enthalpy and thermal radiation, a multi-layered type of porous air heater has been proposed. In the five layered structure which is analyzed in this work, there are five porous layers which are separated by four quartz glass windows. The main layer operates as a porous radiant burner that products a large amount of thermal radiative ene...
متن کاملFully inkjet printed SnO2 gas sensor on plastic substrate
A tin dioxide (SnO2) sensor was fabricated by inkjet printing onto polyimide foil. Gold electrodes and heater were printed on each side of the substrate. A SnO2 based ink was developed by sol-gel method and jetted onto the electrodes. A final annealing at 400°C compatible with the polymeric transducers allowed to synthetize the SnO2 sensing film. Electrical measurements were carried out to char...
متن کاملFuzzy Logic Approach to Diagnosis of Feedwater Heater Performance Degradation
Since failure in, damage to, and performance degradation of power generation components in operation under harsh environment of high pressure and high temperature may cause both economic and human loss at power plants, highly reliable operation and control of these components are necessary. Therefore, a systematic method of diagnosing the condition of these components in its early stages is req...
متن کاملTemperature dependence of nanoscale friction investigated with thermal AFM probes
Measurements of nanoscale friction between silicon AFM tips featuring an in-situ solid state heater and silicon substrates (both with native oxide) were performed. The temperature of the heater was varied between room temperature and approximately 650 °C. For these temperatures and the silicon substrate, the temperatures at the point of contact are estimated to range from room temperature to ap...
متن کامل