scholarly journals An Experimental Study of a Wine Batch Distillation in a Copper Pot Still Heated by Gas

Energies ◽  
2021 ◽  
Vol 14 (11) ◽  
pp. 3352
Author(s):  
Marie Rougier ◽  
Jérôme Bellettre ◽  
Lingai Luo
Keyword(s):  
Experimental Study ◽  
Energy Expenditure ◽  
Thermal Performance ◽  
Transient Regime ◽  
Point Of View ◽  
Heating Zone ◽  
Batch Distillation ◽  
Nodal Model ◽  
Energy Consuming ◽  
The Subject

Wine batch distillation in a copper pot still heated directly by combustion is unusual. It is a niche sector. Few studies are available on the subject and even fewer have studied it from a thermal point of view. In a context of ecology awareness and regularly increasing gas taxes, finding less energy consuming and more performing solutions has become necessary. Two methods already exist to recover energy for such pot stills, however improvements could be made. The present study focuses on the heating zone of an experimental pot still. First, a thermal diagnosis based on a nodal model is conducted in transient regime. The major sites of energy expenditure and waste are thus identified and quantified. Results highlight significant losses both in combustion smoke and by conduction to the environment resulting from a limited thermal performance of the system. Proposals are then made to enhance it. For instance, the preheating could be optimized and more thermal waste could be recovered.

Experimental Activities on Thermal Hydraulics of Heavy Liquid Metal Flow in Typical Elements of Nuclear Power Stations

2018 ◽  
Author(s):  
O. Kashinsky ◽  
A. Kurdyumov ◽  
P. Lobanov ◽  
A. Svetonosov ◽  
M. Vorobyev ◽  
...  
Keyword(s):  
Experimental Data ◽  
Experimental Study ◽  
Temperature Field ◽  
Liquid Metal ◽  
Point Of View ◽  
Heavy Liquid ◽  
Heating Zone ◽  
Thermal Hydraulics ◽  
Liquid Metal Coolant ◽  
Metal Coolant

The report presents the results of an experimental study of the thermal hydraulics of a heavy liquid-metal coolant in the elements of a reactor installation. Hydrodynamics and heat transfer are considered in the coolant flow in a model assembly of vertical rods and in a T-junction. These tasks are important both from the point of view of justifying the design solutions of a reactor plant with a heavy liquid-metal coolant, and from the point of view of verification of calculation codes. The results of an experimental study of the temperature distribution in the 7-rod experimental model of a fuel assembly with spacer grids are presented. To create a thermal heterogeneity, a heating zone was created in one of the rods. The evolution of the temperature field is studied with the variation of the mutual location of the heated, measuring rods and the spacer grid. Validation measurements of fluid velocity profiles and its pulsations in a similar flow in a similar geometry of a water coolant have also been carried out. Results of experimental study of mixing of liquid metal with different temperatures in a T-junction also are presented. The liquid with higher temperature was injected through the branch of the T-junction. Data on wall temperature evolution for the mixing of hot and cold liquids were obtained for different ratios of flow rates of main and side flows. Experimental data on fluctuational and spectral structure of temperature field in the mixing zone were obtained for different flow conditions. Results obtained may serve as a basis for construction of experimental data base for verification of CFD.

Experimental study of thermohydraulic characteristics and irreversibility analysis of novel axial corrugated tube with spring tape inserts

2020 ◽  
Vol 92 (3) ◽  
pp. 30901
Author(s):  
Suvanjan Bhattacharyya ◽  
Debraj Sarkar ◽  
Ulavathi Shettar Mahabaleshwar ◽  
Manoj K. Soni ◽  
M. Mohanraj
Keyword(s):  
Heat Transfer ◽  
Experimental Study ◽  
Thermal Performance ◽  
Working Fluid ◽  
The Novel ◽  
Heat Exchanger Tube ◽  
Heat Transfer Augmentation ◽  
Corrugated Tube ◽  
The Impact ◽  
Exchanger Tube

The current study experimentally investigates the heat transfer augmentation on the novel axial corrugated heat exchanger tube in which the spring tape is introduced. Air (Pr = 0.707) is used as a working fluid. In order to augment the thermohydraulic performance, a corrugated tube with inserts is offered. The experimental study is further extended by varying the important parameters like spring ratio (y = 1.5, 2.0, 2.5) and Reynolds number (Re = 10 000–52 000). The angular pitch between the two neighboring corrugations and the angle of the corrugation is kept constant through the experiments at β = 1200 and α = 600 respectively, while two different corrugations heights (h) are analyzed. While increasing the corrugation height and decreasing the spring ratio, the impact of the swirling effect improves the thermal performance of the system. The maximum thermal performance is obtained when the corrugation height is h = 0.2 and spring ratio y = 1.5. Eventually, correlations for predicting friction factor (f) and Nusselt number (Nu) are developed.

A Modified Chair Geometry for Whole Body Counting

1976 ◽  
Vol 15 (05) ◽  
pp. 246-247
Author(s):  
S. C. Jain ◽  
G. C. Bhola ◽  
A. Nagaratnam ◽  
M. M. Gupta
Keyword(s):  
Marked Improvement ◽  
Point Of View ◽  
Whole Body ◽  
Spatial Response ◽  
Body Counting ◽  
The Subject ◽  
Whole Body Counting ◽  
The Buddha

SummaryIn the Marinelli chair, a geometry widely used in whole body counting, the lower part of the leg is seen quite inefficiently by the detector. The present paper describes an attempt to modify the standard chair geometry to minimise this limitation. The subject sits crossed-legged in the “Buddha Posture” in the standard chair. Studies with humanoid phantoms and a volunteer sitting in the Buddha posture show that this modification brings marked improvement over the Marinelli chair both from the point of view of sensitivity and uniformity of spatial response.

Sophie Laws, with Caroline Harper and Rachel Marcus. Research for Development: A Practical Guide. New Delhi: Vistaar Publications. 2003. xiii+475 pages. Paperback. Indian Rupees 450.00.

2003 ◽  
Vol 42 (2) ◽  
pp. 170-172
Author(s):  
Mir Annice Mahmood
Keyword(s):  
Policy Research ◽  
Point Of View ◽  
Basic Question ◽  
New Delhi ◽  
Economic Point ◽  
Scarce Resources ◽  
Is Research ◽  
The Subject ◽  
Development Workers

To implement any successful policy, research about the subject-matter is essential. Lack of knowledge would result in failure and, from an economic point of view, it would lead to a waste of scarce resources. The book under review is essentially a manual which highlights the use of research for development. The book is divided into two parts. Part One informs the reader about concepts and some theory, and Part Two deals with the issue of undertaking research for development. Both parts have 11 chapters each. Chapter 1 asks the basic question: Is research important in development work? The answer is that it is. Research has many dimensions: from the basic asking of questions to the more sophisticated broad-based analysis of policy issues. The chapter, in short, stresses the usefulness of research which development workers ignore at their own peril.

Effectiveness of Flood Protection Project Valuation Methods

2015 ◽  
Vol 10 (3) ◽  
pp. 275-289
Author(s):  
Tadeusz Liziński ◽  
Marcin Bukowski ◽  
Anna Wróblewska
Keyword(s):  
Essential Element ◽  
Weather Conditions ◽  
Point Of View ◽  
Flood Protection ◽  
Costs And Benefits ◽  
Protection Measures ◽  
Investment Projects ◽  
Market Values ◽  
Project Valuation ◽  
The Subject

Projects for flood protection are increasingly the subject of investment projects in the field of water management. This is related to the increasing frequency of worldwide threats caused by extreme weather conditions, including extremely high rainfall causing floods. Technical and nontechnical flood protection measures are also increasing in importance. In the decision-making process, it is necessary to take into account both the costs and benefits of avoiding losses, including an analysis of social benefits, whose valuation of non-market goods is an essential element. A comprehensive account of projects in the field of flood protection based on the estimated costs and benefits of the investment allows the economic efficiency from a general social point of view to be determined. Previous evaluations of the effectiveness of investment projects have mainly taken into account only categories and market values. The aim of the article is to identify the possibilities to expand the values of non-market assessments and categories formulated on the basis of the theoretical economics of the environment. 

Crimes against marriage and family before Criminal Code 1968

2020 ◽  
Vol 15 (1-3) ◽  
pp. 44-59
Author(s):  
Lidia Peneva
Keyword(s):  
Criminal Code ◽  
Point Of View ◽  
Marriage And Family ◽  
Historical Method ◽  
Legal Method ◽  
The Subject ◽  
The Republic ◽  
Criminal Groups ◽  
The Moment ◽  
Structural Point

Crimes against marriage and family are a particular group of social relation­ships that the law has defended properly in view of the high public significance and value they enjoy. At the moment they are regulated in Chapter VI, Section I, of the specific part of the Penal Code the Repub­lic of Bulgaria. The subject matter of this Statement will, however, be the legisla­tive provisions concerning these criminal­ized acts in retrospect. The purpose of the study is to show by historical method and through the comparatively legal method the development of these criminal groups during the periods of various criminal laws in Bulgaria. This will also provide a basis for reflection on possible de lege ferenda proposals. This report from a structural point of view will be divided into three distinct points, marking each of the penal laws in the Republic of Bulgaria, which were in force before 1968.

THE METADIALOGUE CONCEPT IN ITS LINGUISTIC ASPECT

2019 ◽  
Vol 29 (5) ◽  
pp. 721-726
Author(s):  
Yu.V. Kupriyanova ◽  
I.M. Vasilyanova
Keyword(s):  
Subject Matter ◽  
Dynamic Structure ◽  
Point Of View ◽  
Semantic Relations ◽  
Human Cognition ◽  
Main Research ◽  
Key Points ◽  
Research Findings ◽  
The Subject ◽  
Linguistic Aspect

The article summarizes the key points in the development of the metadialogue phenomenon from a linguistic point of view. Some stages of the development of this concept and the difficulties associated with its structuring are covered. The main research findings of modern foreign and domestic experts on its study are considered. Some characteristics of the subject of the research from the standpoint of various pragmatic installations are given. On the basis of the dynamic structure of the metadialogue development, certain principles of semantic relations connected with the dialectical nature of human cognition are presented. Excursion into the history and evolution of the concept is presented. Several types of formulation of the subject matter are given. In accordance with the goal of speech exposure, internal problems of the development of metadialogue are highlighted and the critical points related to solving these problems are described. The rules of metadialogue flow are explained at the level of steps, the success/failure of which directly affects the final result of communication. The prospects of development of the concept research in accordance with various types of discourse are indicated.

An Islamic Framework for Employer-Employee Relationships

1992 ◽  
Vol 9 (2) ◽  
pp. 202-218 ◽  
Author(s):  
M. Ramzan Akhtar
Keyword(s):  
Human Nature ◽  
Wage Structure ◽  
Point Of View ◽  
Employee Relationships ◽  
The Subject ◽  
Islamic Institutions

IntroductionIslamic teachings envisage a balanced society achieved through thefunctioning of Islamic institutions. This paper visualizes three main institutions:ukhiwah, ‘adl, and ihsan. Ukhuwah (brotherhood) promotes the bonds ofbrotherhood, and ‘adl (justice) enforces a system of individual and socialobligations. Islam stresses the importance of meeting one’s obligations, becauseeach obligation has its corresponding right. Thus, an individual’s effort to meethidher obligations leads to the fulfillment of everyone’s rights. This does notmean that Islam forbids one from demanding hidher rights, even though thisdemand does pose a problem related to human nature: an individual wants his/herrights and also some part of another person’s rights. Therefore, one group’sdemand for its rights tends to encroach upon the rights of another group, whichcauses social friction and disorder. The institution of ihsan (benevolence) goesone step further: it exhorts individuals to forego their rights for the sake of others,which is considered an act of piety.This paper will study employer-employee relationships in the light of thethree institutions mentioned above. A framework for conducting employer-employeerelationships is formulated and is then used to determine, from theIslamic point of view, the proper wages. The findings of this paper show thatan economically efficient and equitable wage structure can evolve within thisframework and that such a wage structure would promote the parties’ mutualrelationships which, in turn, would lead to industrial peace.The body of the paper is organized as follows: a review of the existingliterature on the subject, the development of an Islamic framework for employer-employeerelationships, a discussion of the Islamic approach to wagecompensation, and some concluding remarks ...

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