Changing steam chamber volume in screw expander
Annotation
Operating parameters of screw expanders are comparable with the parameters of low-temperature turbo expanders which are used in the gas refrigeration unit for freezing carbon dioxide in the expanding flow of working medium. For the efficiency estimation of using screw expander in the freezing carbon dioxide mod we need to study in detail the process of decompression in the steam chamber. This knowledge is important for the opportunity of using current mathematical model for carbon dioxide freezing from the volume of expanding flow passing through expander with known value of the pressure distribution and flow speed. In this article is presented method of working medium expansion rate definition in the steam chamber. To achieve it are represented algorithms of creating diagrams of reduction male and female rotors swept volume and diagram of changing steam chamber free volume depending on the male rotor angle of rotation. Also in this article are shown the examples of creating above diagrams for the rotor with diameter 315 mm and ratio the length to diameter 0.9. Calculated by using the diagrams expansion angle gives us the opportunity to calculate velocity and time of expansion. These two parameters are the initial values for the carbon dioxide crystallization process estimation.
Keywords
Постоянный URL
Articles in current issue
- Application of HACCP System and Quality of Yoghurt Production in a Small and Medium Enterprise (SME) of Dairy Products in Benin Republic
- Use of a probiotic yeast strain in technology of bread from wheat flour
- Аdsorption of T-2 mycotoxins hydrocolloids
- Chemical composition and antioxidant activity of hop products
- Antioxidant properties of precooked meat semi-finished product
- Optimum consortia of microorganisms in protein fermented milk prodcut
- The influence of heat source temperature on the energy efficiency of absorption bromine lithium step down thermal transformer
- Scroll compressors capacity
- Energy efficient operating modes for central air conditioning and heating systems in an integral room
- Calculated definition of heating duration of the polypropylene pipes for transportation at low temperatures
- Changing steam chamber volume in screw expander
- Electrocaloric microcooler for thermoelastic detector
- Improvement of monitoring and control based on the use of entropy potentials. Adaptation to biotechnology
- Mathematical modeling of thermostating liquid cooling process by the system of frozen ballons
- On the thermal conductivity of R32 in critical region