Determination of solid fraction–temperature relation and latent heat using full scale casting experiments: application to corrosion resistant steels and nickel based alloys

Computer aided cooling curve analysis (CACCA) is an online prediction tool for the determination of solidification characteristics of metals or alloys. The results of CACCA can be used to accurately determine latent heat and solid fraction needed for modeling of the solidification process. Newtonian and Fourier analysis techniques adopt a data base line fitting technique to the first derivative curve for calculation of the solid fraction and latent heat of solidification. This paper describes the theoretical and experimental procedures involved Newtonian and Fourier analysis techniques with reference to an Al-22% Si alloy. The correlations between the solid fraction and temperature/time for the alloy were determined.

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Respirometry for determination of the influents SS-concentration

Water Science & Technology ◽

10.2166/wst.1996.0031 ◽

1996 ◽

Vol 33 (1) ◽

pp. 311-323 ◽

Cited By ~ 2

Author(s):

A. Witteborg ◽

A. van der Last ◽

R. Hamming ◽

I. Hemmers

Keyword(s):

Experimental Design ◽

Activated Sludge ◽

Substrate Concentration ◽

Full Scale ◽

Activated Sludge Process ◽

Respiration Rates ◽

On Line ◽

Large Measurement ◽

Set Up

A method is presented for determining influent readily biodegradable substrate concentration (SS). The method is based on three different respiration rates, which can be measured with a continuous respiration meter which is operated in a cyclic way. Within the respiration meter nitrification is inhibited through the addition of ATU. Simulations were used to develop the respirometry set-up and decide upon the experimental design. The method was tested as part of a large measurement programme executed at a full-scale plant. The proposed respirometry set-up has been shown to be suitable for a semi-on-line determination of an influent SS which is fully based on the IAWQ #1 vision of the activated sludge process. The YH and the KS play a major role in the principle, and should be measured directly from the process.

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The determination of the boiling and triple points of equilibrium hydrogen and its vapour pressure-temperature relation

British Journal of Applied Physics ◽

10.1088/0508-3443/14/12/324 ◽

1963 ◽

Vol 14 (12) ◽

pp. 920-923 ◽

Cited By ~ 17

Author(s):

C R Barber ◽

A Horsford

Keyword(s):

Vapour Pressure ◽

Temperature Relation ◽

Triple Points

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Use of DNVGL-RP-C203 for Determining the Fatigue Capacity of Connectors

10.1115/omae2021-62880 ◽

2021 ◽

Author(s):

Anthony Muff ◽

Anders Wormsen ◽

Torfinn Hørte ◽

Arne Fjeldstad ◽

Per Osen ◽

...

Keyword(s):

Finite Element ◽

Fatigue Testing ◽

Experimental Testing ◽

High Strength ◽

Element Model ◽

Fatigue Analysis ◽

Full Scale ◽

The Finite Element Model

Abstract Guidance for determining a S-N based fatigue capacity (safe life design) for preloaded connectors is included in Section 5.4 of the 2019 edition of DNVGL-RP-C203 (C203-2019). This section includes guidance on the finite element model representation, finite element based fatigue analysis and determination of the connector design fatigue capacity by use of one of the following methods: Method 1 by FEA based fatigue analysis, Method 2 by FEA based fatigue analysis and experimental testing and Method 3 by full-scale connector fatigue testing. The FEA based fatigue analysis makes use of Appendix D.2 in C203-2019 (“S-N curves for high strength steel applications for subsea”). Practical use of Section 5.4 is illustrated with a case study of a fatigue tested wellhead profile connector segment test. Further developments of Section 5.4 of C203-2019 are proposed. This included acceptance criteria for use of a segment test to validate the FEA based fatigue analysis of a full-scale preloaded connector.

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The determination of the heat of dissociation of fluorine and of the latent heat of vaporisation of lithium

Proceedings of the Royal Society of London. Series A, Containing Papers of a Mathematical and Physical Character ◽

10.1098/rspa.1932.0067 ◽

1932 ◽

Vol 136 (829) ◽

pp. 76-82 ◽

Cited By ~ 6

Keyword(s):

High Temperature ◽

Absorption Spectra ◽

Latent Heat ◽

Chemical Reactivity ◽

Direct Method ◽

Thermal Methods ◽

Heat Of Dissociation

The heats of dissociation of chlorine, bromine, and iodine have been determined by thermal methods and estimated to be 58·9, 45·2 and 35·2 kilo-cals. respectively. But no data are yet known concerning the heat of dissociation of fluorine. It is very difficult to subject fluorine to the same treatment as Cl 2 , Br 2 and I 2 ( i. e ., heating to a high temperature in a sealed quartz bulb) owing to its extreme chemical reactivity, and hence no direct method of determining the heat of dissociation of fluorine has yet been devised. In the present paper I have determined it indirectly by interpretation of the absorption spectra of alkali fluorides (for the present only NaF and KF). A short theory of the experiment is given below.

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An Experimental Analysis of Different Cane Juice Centrifugation in the Sugar Industries

Forest Chemicals Review ◽

10.17762/jfcr.v0i0.2 ◽

2016 ◽

pp. 01-06

Author(s):

Prof. Vaishali Sarangpure

Keyword(s):

Experimental Analysis ◽

Full Scale ◽

Feed Stream ◽

Cane Juice ◽

Mechanical Separation ◽

High Consistency ◽

Important Activity

Centrifugation is one of the key unit undertakings in the sugar business. Usually it is used ensuing to thickening of the stick juice, for instance at a high consistency region. The makers are of the view that a sedimentation hub will have the most sensible. The structure features of centrifugals from cluster to steady sorts have been thinks broadly, their operational limits have in like manner been discussed with helpful application by a couple of workers. Beside centrifugation, the mechanical separation in like manner expect an important activity for removing corruptions obtain a comparably sterilized thing, Screening is furthermore a technique used in various structures in the sugar business. The speed keeps up could be around 8000 rpm in the extent of 70-75% mud soddenness. The material vehicle in such a hub can catch suspension particles. The size extent of 1-2µm. It can have a wide extent of feed stream, which can be evaluated dependent on a full-scale. All of these concentrations as discussed for a significant determination of centrifugation of stick juice in the sugar business.

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