Log in

Relevant bibliographies by topics / Vapour expansion / Journal articles

To see the other types of publications on this topic, follow the link: Vapour expansion.

Journal articles on the topic 'Vapour expansion'

Author: Grafiati

Published: 8 June 2024

Last updated: 31 July 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'Vapour expansion.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Ahmed, Aram Mohammed, and Attila R. Imre. "The effect of recuperator on the efficiency of ORC and TFC with very dry working fluid." MATEC Web of Conferences 345 (2021): 00012. http://dx.doi.org/10.1051/matecconf/202134500012.

Full text

Abstract:

Organic Rankine Cycles (ORC) and Trilateral Flash Cycles (TFC) are very similar power cycles; ideally, they have a reversible adiabatic (isentropic) compression, an isobaric heating, an isentropic expansion and an isobaric cooling. The main difference is that for ORC, the heating includes the full evaporation of the working fluid (prior expansion); therefore, the expansion starts in a saturated or dry vapour state, while for TFC, the heating terminates upon reaching the saturated liquid states. Therefore, for TFT, expansion liquid/vapour state (in bubbly liquid or in vapour dispersed with drop

APA, Harvard, Vancouver, ISO, and other styles

2

Miyauchi, Masato, Takumi Watanabe, Daiki Hoshi, and Tomonori Ohba. "Irreversible adsorption of acidic, basic, and water gas molecules on calcium-deficient hydroxyapatite." Dalton Transactions 48, no. 47 (2019): 17507–15. http://dx.doi.org/10.1039/c9dt03704g.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Saini, D. K., A. Baruah, and G. Sachdeva. "Vapour compression system analysis undergoing expansion in an ejector." Journal of Physics: Conference Series 1240 (July 2019): 012131. http://dx.doi.org/10.1088/1742-6596/1240/1/012131.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Mielczarek, Z. A., and T. J. Trojanowski. "Refrigerant vapour superheat in direct-expansion air cooling coils." International Communications in Heat and Mass Transfer 14, no. 3 (1987): 341–46. http://dx.doi.org/10.1016/0735-1933(87)90035-2.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

Guardone, Alberto, Piero Colonna, Emiliano Casati, and Enrico Rinaldi. "Non-classical gas dynamics of vapour mixtures." Journal of Fluid Mechanics 741 (February 13, 2014): 681–701. http://dx.doi.org/10.1017/jfm.2013.13.

Full text

Abstract:

AbstractThe non-classical gas dynamics of binary mixtures of organic fluids in the vapour phase is investigated for the first time. A predictive thermodynamic model is used to compute the relevant mixture properties, including its critical point coordinates and the local value of the fundamental derivative of gas dynamics $\Gamma $. The considered model is the improved Peng–Robinson Stryjek–Vera cubic equation of state, complemented by the Wong–Sandler mixing rules. A finite thermodynamic region is found where the nonlinearity parameter $\Gamma $ is negative and therefore non-classical gas dyn

APA, Harvard, Vancouver, ISO, and other styles

6

Duplat, Jérôme. "Dynamics of expansion and collapse of explosive two-dimensional bubbles." Journal of Fluid Mechanics 859 (November 22, 2018): 677–90. http://dx.doi.org/10.1017/jfm.2018.804.

Full text

Abstract:

An explosive gas mixture of hydrogen and oxygen is introduced in liquid water between two horizontal walls, forming a flat cylindrical bubble. Ignition and explosion of the bubble lead to a large depressurized cavity that finally implodes. We investigate the dynamics of the bubble collapse, which is qualitatively similar to the collapse of a spherical bubble. It exhibits a slightly weaker singularity than for spherical bubbles. We also analyse the explosion process. Starting with an initial radius $R_{0}$, the bubble reaches a maximal radius $R_{max}$ that depends on the gap thickness $h$ betw

APA, Harvard, Vancouver, ISO, and other styles

7

Arshed, G. M., S. Z. Shuja, B. S. Yilbas, and M. O. Budair. "Transient Helium Jet Expansion Into Stagnant Air in Relation to Laser Drilling." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 219, no. 7 (2005): 667–83. http://dx.doi.org/10.1243/095440605x31517.

Full text

Abstract:

Transient helium jet expansion into a stagnant air environment is modelled to resemble the laser vapour ejection from the cavity during the drilling process. As the metal vapour properties are not known, helium is employed while the previously measured jet inlet velocity profiles are introduced in the simulations. A numerical scheme employing a control volume approach is used to discretize the governing equations of flow. The predictions are validated through a case study associated with an incompressible transient jet flow. It is found that the jet inlet profile influences considerably the se

APA, Harvard, Vancouver, ISO, and other styles

8

Gouin, Henri, and Pierre Seppecher. "Temperature profile in a liquid–vapour interface near the critical point." Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences 473, no. 2204 (2017): 20170229. http://dx.doi.org/10.1098/rspa.2017.0229.

Full text

Abstract:

Thanks to an expansion with respect to densities of energy, mass and entropy, we discuss the concept of thermocapillary fluid for inhomogeneous fluids. The non-convex state law valid for homogeneous fluids is modified by adding terms taking account of the gradients of these densities. This seems more realistic than Cahn and Hilliard’s model which uses a density expansion in mass-density gradient only. Indeed, through liquid–vapour interfaces, realistic potentials in molecular theories show that entropy density and temperature do not vary with the mass density as it would do in bulk phases. In

APA, Harvard, Vancouver, ISO, and other styles

9

Sarkar, Jahar. "Exergy analysis of vortex tube expansion vapour compression refrigeration system." International Journal of Exergy 13, no. 4 (2013): 431. http://dx.doi.org/10.1504/ijex.2013.058101.

Full text

APA, Harvard, Vancouver, ISO, and other styles

10

Liu, Yefeng, and Jun Yu. "Review of vortex tube expansion in vapour compression refrigeration system." IOP Conference Series: Earth and Environmental Science 153 (May 2018): 032021. http://dx.doi.org/10.1088/1755-1315/153/3/032021.

Full text

APA, Harvard, Vancouver, ISO, and other styles

11

Dobrokhotov, Vladimir, and Egor Egorov. "Investigation of vapour permeability of films based on mastics of different composition." Smart composite in construction 6, no. 2 (2025): 53–65. https://doi.org/10.52957/2782-1919-2025-6-2-53-65.

Full text

Abstract:

Prevention of undesirable condensation processes in the structure of building materials is possible using vapour barrier coatings based on mastics. The advantage of forming such coatings is their reliable fastening to the surface without the use of additional devices and complex equipment, operational reliability due to the absence of joints. The main attention is paid to the analysis of the dependence of the vapour permeability coefficient of films based on polymer mastics on various production and technological factors - consumption of components in the mastic, layer thickness and applicatio

APA, Harvard, Vancouver, ISO, and other styles

12

Paride, Gullo, Ryhl Kærn Martin, Haida Michal, Smolka Jacek, and Elbel Stefan. "A review on current status of capacity control techniques for two-phase ejectors." International Journal of Refrigeration 119 (February 25, 2020): 64–79. https://doi.org/10.5281/zenodo.4042102.

Full text

Abstract:

The adoption of highly efficient vapour-compression refrigeration, air conditioning and heat pump (RACHP) systems is compulsory to achieve a low-carbon society. Expansion work recovery using a two-phase ejector is widely recognized as one of the most promising measures to improve the energy efficiency of RACHP units. This holds true for all operation conditions provided that an effective capacity control technique is implemented. In this work a thorough critical review on the current status of the presently available capacity control techniques for two-phase ejectors was carried out. In additi

APA, Harvard, Vancouver, ISO, and other styles

13

Imre, Attila R., Réka Kustán, and Axel Groniewsky. "Thermodynamic Selection of the Optimal Working Fluid for Organic Rankine Cycles." Energies 12, no. 10 (2019): 2028. http://dx.doi.org/10.3390/en12102028.

Full text

Abstract:

A novel method proposed to choose the optimal working fluid—solely from the point of view of expansion route—for a given heat source and heat sink (characterized by a maximum and minimum temperature). The basis of this method is the novel classification of working fluids using the sequences of their characteristic points on temperature-entropy space. The most suitable existing working fluid can be selected, where an ideal adiabatic (isentropic) expansion step between a given upper and lower temperature is possible in a way, that the initial and final states are both saturated vapour states and

APA, Harvard, Vancouver, ISO, and other styles

14

Thompson, Philip A., Humberto Craves, G. E. A. Meier, Yoon-Gon Kim, and H. D. Speckmann. "Wave splitting in a fluid of large heat capacity." Journal of Fluid Mechanics 185 (December 1987): 385–414. http://dx.doi.org/10.1017/s0022112087003227.

Full text

Abstract:

The splitting of a single pressure discontinuity into a propagating two-wave system is studied for the case of saturated-liquid expansion (liquid-evaporation wave splitting) and vapour compression (vapour-condensation wave splitting). Experimental results from the Max-Planck-Institut für Strömungsforschung and from Rensselaer Polytechnic Institute show that splitting occurs in test fluids of large molar heat capacity, such as iso-octane (Cv0/R≈ 37). Each of the two forms of splitting results in a single-phase forerunner wave carrying a pressure discontinuity followed by a phase-change wave, al

APA, Harvard, Vancouver, ISO, and other styles

15

WILSON, S. K., S. H. DAVIS, and S. G. BANKOFF. "The unsteady expansion and contraction of a long two-dimensional vapour bubble between superheated or subcooled parallel plates." Journal of Fluid Mechanics 391 (July 25, 1999): 1–27. http://dx.doi.org/10.1017/s0022112099004516.

Full text

Abstract:

In an attempt to model the growth and collapse of a vapour bubble in nucleate boiling this paper investigates the unsteady expansion and contraction of a long two-dimensional vapour bubble confined between superheated or subcooled parallel plates whose motion is driven by mass-transfer effects due to evaporation from the liquid to the vapour and condensation from the vapour to the liquid. It is shown that in the asymptotic limit of strong surface tension (small capillary number) the solution consists of two capillary-statics regions (in which the bubble interface is semicircular at leading ord

APA, Harvard, Vancouver, ISO, and other styles

16

Misra, R. K. "Thermodynamic Performance Evaluation of Multi-Evaporators single Compressor and single Expansion Valve and Liquid Vapour Heat Exchanger in Vapour Compression Refrigeration systems using Thirteen Eco-friendly Refrigerants for Reducing Global Warming and Oz." International Journal of Advance Research and Innovation 2, no. 2 (2014): 139–49. http://dx.doi.org/10.51976/ijari.221421.

Full text

Abstract:

The methods for improving first law and second law efficiency have been considered in this paper by using liquid vapour heat exchanger is investigated in this paper. Detailed energy and exergy analysis of multi-evaporators at different temperatures with single compressor and single expansion valve using liquid vapour heat exchanger vapour compression refrigeration systems have been done in terms of performance parameter for R507a, R125, R134a, R290, R600, R600a, R1234ze, R1234yf, R410a, R407c, R707, R404a and R152a refrigerants. The numerical computations have been carried out for both systems

APA, Harvard, Vancouver, ISO, and other styles

17

Mishra, R. S. "Thermodynamic Performance Evaluation of Multi-Evaporators Single Compressor and Single Expansion Valve and Liquid Vapour Heat Exchanger in Vapour Compression Refrigeration Systems using Thirteen Ecofriendly Refrigerants for Reducing Global Warming and Ozo." International Journal of Advance Research and Innovation 1, no. 3 (2013): 107–17. http://dx.doi.org/10.51976/ijari.131315.

Full text

Abstract:

The methods for improving first law and second law efficiency have been considered in this paper by using liquid vapour heat exchanger is investigated in this paper. Detailed energy and exergy analysis of multi-evaporators at different temperatures with single compressor and single expansion valve using liquid vapour heat exchanger vapour compression refrigeration systems have been done in terms of performance parameter for R507a, R125, R134a, R290, R600, R600a, R1234ze, R1234yf, R410a, R407c, R707, R404a and R152a refrigerants. The numerical computations have been carried out for both systems

APA, Harvard, Vancouver, ISO, and other styles

18

Geisler, A. E., and N. Wenzel. "Impact of the Metal Evaporation Rate in Vacuum Interrupters on Vapor Expansion and Deposition in Vacuum." PLASMA PHYSICS AND TECHNOLOGY 6, no. 2 (2019): 165–69. http://dx.doi.org/10.14311/ppt.2019.2.165.

Full text

Abstract:

The emission of contact material into vacuum after switching operation of a vacuum interrupter is crucial for the metallisation of the ceramic surfaces. This work focuses on the simulation of various regimes of metal vapour pressure using an extended version of an existing DSMC code that now allows the visualisation of the interaction types and locations during the vapour expansion. The model was applied to a typical vacuum interrupter geometry at different current levels between 3 A and 100 kA. The simulations show that in the low current case the likelihood for a particle hitting a ceramic s

APA, Harvard, Vancouver, ISO, and other styles

19

Damanik, Jhon Berry Finn, Bambang Admadi Harsujuwono, and Lutfi Suhendra. "Pengaruh Konsentrasi Asam Stearat dan Suhu Gelatinisasi terhadap Karakteristik Komposit Bioplastik Tapioka dan Glukomanan." JURNAL REKAYASA DAN MANAJEMEN AGROINDUSTRI 10, no. 1 (2022): 44. http://dx.doi.org/10.24843/jrma.2022.v10.i01.p05.

Full text

Abstract:

This study aims to determine the effect of stearic acid concentration and gelatinization temperature and the interaction of the two treatments on the characteristics of tapioca and glucomannan bioplastic composites, and determine the concentration of stearic acid and gelatinization temperature which can produce bioplastic composites with the best characteristics. This study used a randomized block design with two factors. The first factor is the concentration of stearic acid which consists of 0.2%, 0.4%, 0.6%, 0.8%. The second factor is the gelatinization temperature which consists of 4 temper

APA, Harvard, Vancouver, ISO, and other styles

20

Horlock, J. H. "Simplified Analyses of Some Vapour Power Cycles." Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy 210, no. 3 (1996): 191–202. http://dx.doi.org/10.1243/pime_proc_1996_210_032_02.

Full text

Abstract:

A range of vapour power cycles is analysed, using the assumption originally made by Schaff that along a turbine expansion line the difference between the (local) enthalpy (h) and the liquid enthalpy at the same pressure ( hL) may remain unchanged (β = h – hL is constant). The thermodynamics of the assumption are critically examined and it is found to be valid only over strictly limited ranges of properties (usually low-pressure levels). However, if such limitations are accepted, the analyses provide understanding of the effects of various key parameters on thermal efficiency, and of measures (

APA, Harvard, Vancouver, ISO, and other styles

21

Miniotaitė, Rūta, and Vytautas Stankevičius. "THE DURABILITY OF PAINTS ON SAND-LIME BRICK WALLS CONSIDERING WATER SORPTION AND VAPOUR PERMEABILITY IN A TWO-LAYER SYSTEM." JOURNAL OF CIVIL ENGINEERING AND MANAGEMENT 9, no. 2 (2003): 110–14. http://dx.doi.org/10.3846/13923730.2003.10531313.

Full text

Abstract:

It is assumed that the proposed coatings are suitable for finishing selected surfaces. However, our research indicated that the provided specific physical-mechanical properties of the coatings may change in a new combination of “coating—substrate”. It was found while analysing the results of grouped paints investigations that specific nature of vapour permeability and absorption, the effect of opposition thereof, the expansion of destruction and expression of its symptoms were characteristic of each group. Physical-mechanical properties of constructions substrate and finishing layer can supple

APA, Harvard, Vancouver, ISO, and other styles

22

Zekeri, Momoh Sabiu, Munir Braimah, and Adam Isah Umar. "Air Refrigeration Methods for Comparison Simulation Bench." International Journal of Innovative Science and Research Technology 8, no. 2 (2023): 339–43. https://doi.org/10.5281/zenodo.7652716.

Full text

Abstract:

This proposed research titled, Air Refrigeration Methods for Comparison Simulation Bench, is a new technique to yield coefficient of performance (COP) of refrigerants, mechanical energy, generate low heat energy with an optimal current discharge in dissimilar metals. First law of thermodynamic states that the net heat supplied from the system to the surrounding should be equal to the net work done when temperature and pressure do not change the enthalpy of the system (Hess law). The temperature, pressure as well as rate of cooling of compressed Freon 12 refrigerant or ammonia from the condense

APA, Harvard, Vancouver, ISO, and other styles

23

Belaustegi, Y., M. J. Citores, and L. A. Fernández. "Automation of Vapour Pressure Osmometry measurements." Journal of Automatic Chemistry 13, no. 5 (1991): 181–85. http://dx.doi.org/10.1155/s1463924691000329.

Full text

Abstract:

A program has been developed for the control of Vapour Pressure Osmometry (VPO) measurements. The output signal of a Vapour Pressure Osmometer is read by an A/D converter card installed in one of the expansion slots of a PC microcomputer. The stability of the measurements is checked by analysing the first derivative of the smoothed signals, which is calculated in real time. Sets of repeated measurements are carried out under the supervision of a computer program as a check for their reproducibility. When the set is ended the program calculates the average and its standard deviation.The program

APA, Harvard, Vancouver, ISO, and other styles

24

Richardson, R. N., and J. S. Butterworth. "A Novel Vapour-Compression Refrigeration Circuit Employing a Computer-Controlled Expansion Valve." International Journal of Mechanical Engineering Education 23, no. 1 (1995): 1–7. http://dx.doi.org/10.1177/030641909502300103.

Full text

APA, Harvard, Vancouver, ISO, and other styles

25

Igobo, Opubo N., and Philip A. Davies. "Review of low-temperature vapour power cycle engines with quasi-isothermal expansion." Energy 70 (June 2014): 22–34. http://dx.doi.org/10.1016/j.energy.2014.03.123.

Full text

APA, Harvard, Vancouver, ISO, and other styles

26

You, Qinglong, Jinzhong Min, Shichang Kang, and Nick Pepin. "Poleward expansion of the tropical belt derived from upper tropospheric water vapour." International Journal of Climatology 35, no. 9 (2014): 2237–42. http://dx.doi.org/10.1002/joc.4125.

Full text

APA, Harvard, Vancouver, ISO, and other styles

27

Smith, I. K., and R. Pitanga Marques da Silva. "Development of the Trilateral Flash Cycle System Part 2: Increasing Power Output with Working Fluid Mixtures." Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy 208, no. 2 (1994): 135–44. http://dx.doi.org/10.1243/pime_proc_1994_208_022_02.

Full text

Abstract:

The trilateral flash cycle system is a proposed means of power recovery from single-phase low-grade heat sources. Its feasibility depends on the efficient adiabatic expansion of light hydrocarbons from the saturated liquid phase into the two-phase region. Such a process is performed most effectively with a Lysholm twin-screw expander when the exhausted vapour is wet. At higher temperatures, when multi-stage expansion is required, working fluids may be found which complete the process as dry saturated vapour. It is shown that at condensing temperatures of 0–50°C, this is possible with a mixture

APA, Harvard, Vancouver, ISO, and other styles

28

Hansen, H. C. B., and R. M. Taylor. "The use of glycerol intercalates in the exchange of CO32− with SO42−, NO3− or Cl− in pyroaurite-type compounds." Clay Minerals 26, no. 3 (1991): 311–27. http://dx.doi.org/10.1180/claymin.1991.026.3.02.

Full text

Abstract:

AbstractStrongly held carbonates anions in the interlayer region of pyroaurite-type compounds, [MlII1−xM2IIIx(OH)2]x+[(CO3)x/2yH2O]x− (x = 0·15−0·44), can be relatively easily exchanged by other anions such as NO3−, Cl− or SO42− dissolved in heated glycerol. Some Fe(III) of pyroaurite is reduced to Fe(II) by the glycerol treatment. If pyroaurite is treated with glycerol in the absence of dissolved anions or with glycerol vapour at 120°C, glycerol becomes intercalated in the interlayers. In all examples the interlayer CO32− is partially or completely lost as CO2. In aqueous salt solutions a gly

APA, Harvard, Vancouver, ISO, and other styles

29

Yakush, S. E., N. S. Sivakov, V. I. Melikhov, and O. I. Melikhov. "Numerical modelling of melt droplet interaction with water." Journal of Physics: Conference Series 2057, no. 1 (2021): 012057. http://dx.doi.org/10.1088/1742-6596/2057/1/012057.

Full text

Abstract:

Abstract A collapse of the vapour film separating a hot melt droplet from the surrounding water due to sudden ambient pressure rise is considered. The pressure peak causes a direct contact between water and melt, leading to significant disturbances of the melt droplet surface. Results of numerical simulations performed by the VOF method are presented. Parametric analysis of the interaction process is performed for a molten tin droplet with initial temperature of 950 K, immersed in subcooled water having the temperature of 353 K. The interaction is initiated by sudden rise of the ambient pressu

APA, Harvard, Vancouver, ISO, and other styles

30

R Hariharan et al. "Hardened Enhancement Investigation of Al-Zr-N Coating by EBM Technique: A review." Proceeding International Conference on Science and Engineering 11, no. 1 (2023): 122–31. http://dx.doi.org/10.52783/cienceng.v11i1.106.

Full text

Abstract:

The purpose of this research is to examine the Al-Zr-N coating applied to the E19 steel alloy by physical vapour deposition using an electron beam. The physical vapour deposition processes used to create layered [Al-Zr-N] coatings and the structures, wear resistances, and corrosion behaviours of these materials. In order to examine the coating structures, surface roughness, micro-hardness, micro-abrasion, and pin on disc were used. One of the residual stress elements that can lead to failure mechanisms for suitable coatings is thermal stress. The mechanical characteristics of the coating, incl

APA, Harvard, Vancouver, ISO, and other styles

31

Zhalehrajabi, Ehsan, and Nejat Rahmanian. "Nucleation and Condensation Modeling of Metal Vapor in Laval Nozzle." Advanced Materials Research 925 (April 2014): 185–89. http://dx.doi.org/10.4028/www.scientific.net/amr.925.185.

Full text

Abstract:

Nucleation and condensation of mercury vapor has been investigated in various divergent angle and operating condition. Divergent angle has a great effect on droplet size at the end of nozzle. Influence of operating condition such as pressure and temperature on the size of droplet has been investigated. A one-dimensional mathematical model based on classical nucleation and growth has been developed to calculate the nucleation and condensation of mercury vapor. A mercury vapour turbine has been used in conjunction with a steam turbine for generating electricity. The mercury cycle offers an effic

APA, Harvard, Vancouver, ISO, and other styles

32

BARTON, N. G. "AN EVAPORATION HEAT ENGINE AND CONDENSATION HEAT PUMP." ANZIAM Journal 49, no. 4 (2008): 503–24. http://dx.doi.org/10.1017/s1446181108000035.

Full text

Abstract:

AbstractThis paper presents a thermodynamic model for a heat engine based on evaporative cooling of unsaturated air at reduced pressure. Also analysed is a related heat pump based on condensation of water vapour in moist air at reduced pressure. These devices operate as two-stroke reciprocating engines, which are their simplest possible embodiments. The mathematical models for the two devices are based on conservation of mass for both air and water vapour, ideal gas laws, constant specific heats, and, as appropriate, either constant entropy processes or cooling/heating by evaporation/condensat

APA, Harvard, Vancouver, ISO, and other styles

33

Ganorkar, Atul. "Performance Evaluation of Water Cooled Condenser of Air Conditioner Working on VCRS." INTERANTIONAL JOURNAL OF SCIENTIFIC RESEARCH IN ENGINEERING AND MANAGEMENT 08, no. 05 (2024): 1–5. http://dx.doi.org/10.55041/ijsrem34032.

Full text

Abstract:

VCRS commonly known as (Vapour Compression Refrigeration System) is widely adopted method for air conditioning of buildings, in pharmaceutical industry for storage of medicine, in hospitals, automobiles etc. There are several methods for increasing the efficiency% (COP) of an VCRS cycle. Some of the modification can be done in Compressor, Condenser, Evaporator, and in Refrigerant . In this experiment, we adopted method of Subcooling to reduce Compressor work. This study investigates the implementation of subcooling in the condenser of a Vapour Compression Refrigeration System (VCRS) to enhance

APA, Harvard, Vancouver, ISO, and other styles

34

Kowalczyk, Tomasz, Paweł Ziółkowski, and Janusz Badur. "Exergy analysis of the Szewalski cycle with a waste heat recovery system." Archives of Thermodynamics 36, no. 3 (2015): 25–48. http://dx.doi.org/10.1515/aoter-2015-0020.

Full text

Abstract:

Abstract The conversion of a waste heat energy to electricity is now becoming one of the key points to improve the energy efficiency in a process engineering. However, large losses of a low-temperature thermal energy are also present in power engineering. One of such sources of waste heat in power plants are exhaust gases at the outlet of boilers. Through usage of a waste heat regeneration system it is possible to attain a heat rate of approximately 200 MWth, under about 90 °C, for a supercritical power block of 900 MWel fuelled by a lignite. In the article, we propose to use the waste heat to

APA, Harvard, Vancouver, ISO, and other styles

35

Devi, M. Jyostna, Earl W. Taliercio, and Thomas R. Sinclair. "Leaf expansion of soybean subjected to high and low atmospheric vapour pressure deficits." Journal of Experimental Botany 66, no. 7 (2015): 1845–50. http://dx.doi.org/10.1093/jxb/eru520.

Full text

APA, Harvard, Vancouver, ISO, and other styles

36

Sairamakrishna, B., T. Gopala Rao, and N. Rama Krishna. "Cop Enhancement of Vapour Compression Refrigeration System." Indian Journal of Production and Thermal Engineering 1, no. 2 (2021): 1–6. http://dx.doi.org/10.35940/ijpte.b2004.061221.

Full text

Abstract:

This experimental investigation exemplifies the design and testing of diffuser at compressor inlet and nozzle at condenser outlet in vapour compression refrigeration system with the help of R134a refrigerant. The diffuser with divergence angle of 12°,14° and the nozzle with convergent angle 12°,14° are designed for same inlet and outlet diameters. Initially diffusers are tested at compressor inlet diffuser is used with inlet diameter equal to exit tube diameter of evaporator and outlet tube diameter is equal to suction tube diameter of the compressor. Diffuser helps to increases the pressure o

APA, Harvard, Vancouver, ISO, and other styles

37

B, Sairamakrishna, T. Gopala Rao, and Rama Krishna, N. "Cop Enhancement of Vapour Compression Refrigeration System." Indian Journal of Production and Thermal Engineering 1, no. 2 (2021): 1–6. http://dx.doi.org/10.35940/ijpte.b2004.06122.

Full text

Abstract:

This experimental investigation exemplifies the design and testing of diffuser at compressor inlet and nozzle at condenser outlet in vapour compression refrigeration system with the help of R134a refrigerant. The diffuser with divergence angle of 12°,14° and the nozzle with convergent angle 12°,14° are designed for same inlet and outlet diameters. Initially diffusers are tested at compressor inlet diffuser is used with inlet diameter equal to exit tube diameter of evaporator and outlet tube diameter is equal to suction tube diameter of the compressor. Diffuser helps to increases the pressure o

APA, Harvard, Vancouver, ISO, and other styles

38

Sairamakrishna, B., T. Gopala Rao, and N. Rama Krishna. "Cop Enhancement of Vapour Compression Refrigeration System." Indian Journal of Production and Thermal Engineering 1, no. 2 (2021): 1–6. http://dx.doi.org/10.54105/ijpte.b2004.061221.

Full text

Abstract:

This experimental investigation exemplifies the design and testing of diffuser at compressor inlet and nozzle at condenser outlet in vapour compression refrigeration system with the help of R134a refrigerant. The diffuser with divergence angle of 12°,14° and the nozzle with convergent angle 12°,14° are designed for same inlet and outlet diameters. Initially diffusers are tested at compressor inlet diffuser is used with inlet diameter equal to exit tube diameter of evaporator and outlet tube diameter is equal to suction tube diameter of the compressor. Diffuser helps to increases the pressure o

APA, Harvard, Vancouver, ISO, and other styles

39

B, Sairamakrishna, Gopala Rao T, and Rama Krishna N. "Cop Enhancement of Vapour Compression Refrigeration System." Indian Journal of Production and Thermal Engineering (IJPTE) 1, no. 2 (2021): 1–6. https://doi.org/10.54105/ijpte.B2004.061221.

Full text

Abstract:

This experimental investigation exemplifies the design and testing of diffuser at compressor inlet and nozzle at condenser outlet in vapour compression refrigeration system with the help of R134a refrigerant. The diffuser with divergence angle of 12°,14° and the nozzle with convergent angle 12°,14° are designed for same inlet and outlet diameters. Initially diffusers are tested at compressor inlet diffuser is used with inlet diameter equal to exit tube diameter of evaporator and outlet tube diameter is equal to suction tube diameter of the compressor. Diffuser helps to increase

APA, Harvard, Vancouver, ISO, and other styles

40

Evdokimov, Sergei, Tatiana Gerasimenko, Ruslan Maksimov, and Daria Dyatlova. "Instability analysis of vapour-filled bubbles in turbulent flows in ore flotation processes." Sustainable Development of Mountain Territories 17, no. 1 (2025): 69–88. https://doi.org/10.21177/1998-4502-2025-17-1-69-88.

Full text

Abstract:

Introduction. The subject of the study is a method of flotation, in accordance with which a mixture of air with hot (with saturation temperature > 104 °C) water vapour – vapour-air mixture is used as a gas phase in flotation. One of the consequences of aeration of cold slurry by air bubbles filled with hot water vapour is a change in their size distribution. Materials and methods. The study used a system in which water is separated from its vapour by a heat-insulating quasi-baffle as a thermophysical model of the process. The two-phase vapour-liquid flow starts at the moment when the quasi-

APA, Harvard, Vancouver, ISO, and other styles

41

Prasetyo, Totok, Mochamad Denny Surindra, Wahyu Caesarendra, et al. "Influence of Superheated Vapour in Organic Rankine Cycles with Working Fluid R123 Utilizing Low-Temperature Geothermal Resources." Symmetry 12, no. 9 (2020): 1463. http://dx.doi.org/10.3390/sym12091463.

Full text

Abstract:

An organic Rankine cycle (ORC) system with R123 working fluid has been utilised for generating electricity from low-temperature geothermal resources. The degree of superheated vapour warrants attention to be studied further. This is because the degree of superheated vapour is the last point to absorb heat energy from geothermal heat sources and influence the amount of expansion power produced by the expander. Therefore, achieving high ORC system efficiency requires a parameter of superheated vapour degree. This paper presents an experimental study on a binary cycle, applying R123 as the workin

APA, Harvard, Vancouver, ISO, and other styles

42

Zabet, Ion, and Gratiela Maria Tarlea. "Mathematical Simulation of the Thermodynamic Processes Associated with the Vapour-Injected Scroll Compressor." E3S Web of Conferences 111 (2019): 06057. http://dx.doi.org/10.1051/e3sconf/201911106057.

Full text

Abstract:

Both the major energetic crisis and the global warming, which influence the worldwide economy and the future of the society, determine the development of energetic and ecological performances of both the refrigeration equipment and air conditioning systems. Thus, there is a worldwide supported effort made in order to decrease the carbon dioxide emissions resulted from the burning of fossil fuels and the other greenhouse effect gas emissions. This article presents a refrigeration system design model using a vapour injection scroll compressor and tube in tube evaporators working with refrigerant

APA, Harvard, Vancouver, ISO, and other styles

43

Bakhtar, F., H. Mashmoushy, and O. C. Jadayel. "On the performance of a cascade of turbine rotor tip section blading in wet steam Part 2: Surface pressure distributions." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 211, no. 7 (1997): 531–40. http://dx.doi.org/10.1243/0954406971521917.

Full text

Abstract:

In the course of expansion in turbines steam nucleates to become a two-phase mixture, the liquid consisting of a very large number of extremely small droplets carried by the vapour. Formation and subsequent behaviour of the liquid lowers the performance of turbine wet stages. To produce turbine nucleating and wet flow conditions realistically requires a supply of supercooled steam which can be achieved under blow-down conditions by the equipment employed. To obtain wet steam, the supercooled vapour generated is passed through a venturi before admission to the cascade. To evaluate the influence

APA, Harvard, Vancouver, ISO, and other styles

44

Traverso, Alberto, Federico Reggio, Paolo Silvestri, Sergio Rizzo, Geoff Engelbrecht, and Alexandros Chasoglou. "Two-phase flow expansion: development of an innovative test-rig for flow characterisation and CFD validation." E3S Web of Conferences 113 (2019): 03017. http://dx.doi.org/10.1051/e3sconf/201911303017.

Full text

Abstract:

The aim of this work is to describe the design of an innovative test rig for investigating the expansion of saturated fluids in the two-phase region. The experimental test rig was thought up and built by TPG of the University of Genoa. It will be equipped by probes and some optical accesses that permit high speed video recording and laser measurements. It will be useful for the study of the quality ratio, vapour and liquid droplet thermodynamic properties and their speed.

APA, Harvard, Vancouver, ISO, and other styles

45

Cheng, Ruishan, Wensu Chen, Hong Hao, and Jingde Li. "Dynamic response of road tunnel subjected to internal Boiling liquid expansion vapour explosion (BLEVE)." Tunnelling and Underground Space Technology 123 (May 2022): 104363. http://dx.doi.org/10.1016/j.tust.2022.104363.

Full text

APA, Harvard, Vancouver, ISO, and other styles

46

Jurski, K., and E. Géhin. "Heterogeneous condensation process in an air water vapour expansion through a nozzle––experimental aspect." International Journal of Multiphase Flow 29, no. 7 (2003): 1137–52. http://dx.doi.org/10.1016/s0301-9322(03)00083-1.

Full text

APA, Harvard, Vancouver, ISO, and other styles

47

Singh, Jagdev, Nirmal Singh, and J. K. Sharma. "MODELING AND SIMULATION FOR INTELLIGENT CONTROL OF EXPANSION VALVE IN VAPOUR COMPRESSION REFRIGERATION SYSTEM." Cybernetics and Systems 38, no. 4 (2007): 411–27. http://dx.doi.org/10.1080/01969720701291247.

Full text

APA, Harvard, Vancouver, ISO, and other styles

48

Goyal, Kunal, R. V. Nanditta, Potteli Dharma Teja, S. Malarmannan, and G. Manikandaraja. "Analysis of vapor compression refrigeration system employing tetrafluroethane and difluroethane as refrigerants." Journal of Physics: Conference Series 2054, no. 1 (2021): 012054. http://dx.doi.org/10.1088/1742-6596/2054/1/012054.

Full text

Abstract:

Abstract The axiomatic effects of ozone layer depletion have caused additional damage in the last few decades. The accretion in greenhouse gases has transformed to take cardinal steps immediately. The concoct blend of 1,1,1,2 Tetrafluroethane (R134a) and 1,1, Difluroethane (R152) a was tested in a vapour compression refrigeration system as these are non-toxic, eco-friendly, non-flammable and non-corrosive. Experimental performance analysis of vapor compression refrigeration system using R134a and blends of R152a and R134a is done for different dimensions of expansion valves. Various parameters

APA, Harvard, Vancouver, ISO, and other styles

49

Vamsi, T., Sk Nayab Rasool, V. Ratna Ramesh, K. Hemanth, J. V. S. S. Neeraj Kumar, and S. Venkateswara Rao. "A Review on Experimental Analysis on Hybrid Vapour Compression Refrigeration System." International Journal for Research in Applied Science and Engineering Technology 10, no. 9 (2022): 572–76. http://dx.doi.org/10.22214/ijraset.2022.46685.

Full text

Abstract:

Abstract: A vapor-compression refrigeration system is a system that uses liquid refrigerant in a closed system which circulates the refrigerant through four stages in which it is alternately compressed and expanded, changing it from liquid to vapor. As this change happens, heat is either absorbed or expelled by the system, resulting in a change in temperature of the surrounding air that is passing over the unit's components. Nearly all of the refrigeration systems we use today use this cycle to accomplish cooling. VCRS system is made up of four main components: the evaporator, condenser, compr

APA, Harvard, Vancouver, ISO, and other styles

50

Bakhtar, F., M. Ebrahimi, and B. O. Bamkole. "On the Performance of a Cascade of Turbine Rotor Tip Section Blading in Nucleating Steam: Part 2: Wake Traverses." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 209, no. 3 (1995): 169–77. http://dx.doi.org/10.1243/pime_proc_1995_209_140_02.

Full text

Abstract:

During the course of expansion of steam in turbines the fluid first supercools and then nucleates to become a two-phase mixture. To reproduce turbine two-phase flow conditions requires a supply of supercooled vapour which can be achieved under blow-down conditions by the equipment employed. This paper is the second of a set describing an investigation into the performance of a cascade of rotor tip section profiles in nucleating steam and presents the results of the wake traverses and droplet measurements.

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!