A computational method for the methyl amine/H2 gas mixture concentrations in methyl amine/H2O/H2 absorption refrigeration units

 
δείτε την πρωτότυπη σελίδα τεκμηρίου
στον ιστότοπο του αποθετηρίου του φορέα για περισσότερες πληροφορίες και για να δείτε όλα τα ψηφιακά αρχεία του τεκμηρίου*
κοινοποιήστε το τεκμήριο



A computational method for the methyl amine/H2 gas mixture concentrations in methyl amine/H2O/H2 absorption refrigeration units (EN)

Stegou-Sagia, A (EN)

N/A (EN)

Substitution of ammonia by methyl amine is proposed in neutral gas absorption refrigeration units using hydrogen as the pressure equalising gas. The throttling process of the conventional refrigeration units is being replaced by the diffusion of evaporated methyl amine through the hydrogen atmosphere. Accurate knowledge of the thermophysical properties of the working fluids, as well as heat and mass transfer characteristics, are required in the design of these units. This work reports an algorithm for the 'psychrometric problem', i.e. for the determination of the mass fraction of the methyl amine/hydrogen gas mixture from known 'dry' and 'wet' bulb temperatures. The values of the mixture's mass fraction are computed for various combinations of 'dry' and 'wet' bulb temperatures, due to analytical correlations concerning the thermodynamic and transport properties presented by this paper. The final results are given in psychrometric charts for pressures from 17.5 bar to 27.5 bar and temperatures between -30 and 50 degrees C. Copyright (C) 1996 Elsevier Science Ltd (EN)

journalArticle

Gas absorption (EN)
Water (EN)
Computational methods (EN)
Amines (EN)
Transport properties (EN)
Hydrogen (EN)
Thermodynamic-transport properties (EN)
Psychrometers (EN)
Methyl amine/H2O/H2 absorption refrigeration units (EN)
Methyl amine/hydrogen gas mixture (EN)
Mass transfer (EN)
Psychrometric charts (EN)
Algorithms (EN)
Refrigeration (EN)
Thermodynamic properties (EN)
Refrigerating machinery (EN)
Neutral gas absorption refrigeration units (EN)
Heat transfer (EN)

Εθνικό Μετσόβιο Πολυτεχνείο (EL)
National Technical University of Athens (EN)

Applied Thermal Engineering (EN)

Αγγλική γλώσσα

1996


PERGAMON-ELSEVIER SCIENCE LTD (EN)



*Η εύρυθμη και αδιάλειπτη λειτουργία των διαδικτυακών διευθύνσεων των συλλογών (ψηφιακό αρχείο, καρτέλα τεκμηρίου στο αποθετήριο) είναι αποκλειστική ευθύνη των αντίστοιχων Φορέων περιεχομένου.