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1972 Uppsatser om Flow efficiency - Sida 15 av 132

Val av teknik för hastighetsmätning i kallvalsverk

An often encountered problem when implementing a mass flow regulator in a rolling mill is the one with measurement of speed. The most widely used solution is to fit a pulse counter to a wheel that is in contact with the strip. Common problems with this design are for instance scratch marks on the strip and problems with the flatness measuring system.  One way of circumventing the aforementioned problems would be a non-contact measuring system. The market of today only offers systems based on the Doppler principle.This report evaluates three different systems for non-contact speed measurement. Important areas in the evaluation have been the ability to operate under normal rolling conditions, integration in existing control system and how well the sensor can be fitted to the rolling mill.

Konsekvenser av ny teknik på en sjukhusmottagning

An often encountered problem when implementing a mass flow regulator in a rolling mill is the one with measurement of speed. The most widely used solution is to fit a pulse counter to a wheel that is in contact with the strip. Common problems with this design are for instance scratch marks on the strip and problems with the flatness measuring system.  One way of circumventing the aforementioned problems would be a non-contact measuring system. The market of today only offers systems based on the Doppler principle.This report evaluates three different systems for non-contact speed measurement. Important areas in the evaluation have been the ability to operate under normal rolling conditions, integration in existing control system and how well the sensor can be fitted to the rolling mill.

Vem gör vad - En fallstudie om federativ samverkan

This study aims to investigate how federations manage to balance the economies of scale through collaboration and autonomy. This is done through a case study on Länsförsäkringar. The lack of modern research on federations makes the federative structure an interesting field of study. Previous research has shown a general perception that an increased pressure on efficiency and economies of scale creates a stronger common unit that eventually creates an imbalance in the federation. It is therefore interesting to look at the balance, which exists between the member units and the common unit of a federation.

Biochar as soil amendment in flow-through planters - for increased treatment of zinc roof runoff

In times of increased flooding, enhanced by climate change, polluted stormwater poses an increased threat to the environment through contaminated water entering waterways. Bioretention utilizes natural processes in soil and vegetation to treat pollutants and combat this threat. Biochar produced through pyrolysis, has a high cation exchange capacity (CEC) and could therefore increase treatment in bioretention systems. This research applies a literature review, interview, and a model to explore the benefits and disadvantages of biochar in order to specify a soil-mix through an understanding of the production process and preferred application rate. High purification through CEC, increased water holding capacity, and carbon sequestration being the benefits discussed.

Noble Operations: En studie av Stadshuskällarens processflöden

The aim of this thesis is to study Stadshuskällaren?s operational processe flow and identify their operational characteristics. The uniqueness of Stadshuskällaren is that they are breaking the law of trade-offs regarding volume/variety, much like Toyota managed to do ? which spawned the entire field of research of the ?Lean Philosophy?. In the thesis the characteristics we identify through analysis, which enables Stadshuskällaren to break the trade-off, are compared with the principles of Lean service theory, which ultimately stem from Toyota.

Kalcium- och fosforsmältbarhet hos växande hästar

In the latest edition of NRC (2007) the feeding recommendations for Ca and P to growing horses were increased with 35 and 25 %, respectively, based on results from a Canadian study showing that daily endogenous fecal losses of Ca and P were greater than previously suggested. A Ca absorption efficiency of 50 % is used for all horses. However, the true absorption efficiency might be as high as 70 % in young horses. P absorption efficiency is assumed to be higher for growing horses because their diets are often supplemented with inorganic P. Thus, an efficiency of 45 % is used for growing horses as compared to 35 % for mature horses.

Energianvändning i badhus : Simulering och jämförelse av gamla och nya system

Every year new premises are built in Sweden, and even if they are made as energy efficient as possible, this will not reduce the energy demands, but the rate of the increase of the energy use will be reduced. One type of facility in Sweden that is a major energy user is public baths, and this makes public baths an interesting facility to study more closely. There are around 500 public baths in Sweden and about 75 % of those can be seen as older baths with large need of renovation, and they all require a high level of energy efficiency measures. To show how the energy demand increase or decrease depending on the changes chosen to be made, the simulation application IDA Indoor Climate and Energy was used. Simulations were made and compared for several cases, with two extreme cases as starting points.

Problematiken kring ett energieffektiviserande projektförslag i en kommunal organisation

When it comes to the priority of a project proposal, a variety of factors is affecting theoutcome. In the municipal sector, factors of non- economic nature appears to be particularlyimportant when the organization is not intended to be profit-making.This study's research question is What problems can occur around an energy-efficiencyproject proposal in a municipal organization? The purpose of this study is to gainunderstanding of what possible problems an energy efficiency project proposal mayencounter, in the municipal implementation process as well as the problems of a changingownership can bring.To conduct this study, the method was qualitative in nature. We have cooperated withVarberg Energi AB and Varberg kommun, which has stood as respondents for the empiricalbasis of the study. In this study, we have conducted four personal interviews.In this study, we have found that there may be several problematic factors associated with anenergy-efficiency project proposal in a municipal organization.

Mindfulness i organisationer - en studie av upplevda effekter

The idea of bringing mindfulness into organizations has become increasingly popular. While previous research has shown positive effects of mindfulness practice in individuals, consequences of introducing mindfulness in organizations remain largely unexplored. This thesis examines those consequences through a qualitative study. We conducted semi-structured interviews with members of two case companies. Based on the effects which mindfulness has been shown to have on individuals, our analysis was especially focused on the areas of efficiency, effectiveness and organizational culture.

Grammatiken bakom den politiska retoriken : En syntaxstudie av före detta statssekreterare Lars Danielssons uttalanden angående sitt ansvar i regeringens hantering av tsunamikatastrofen 2004

In this thesis I based on Fowler?s method of syntax analysis construct a flow scheme which I then use to make a syntax analysis of former State Secretary Lars Danielsson?s statements, in his autobiography, regarding his responsibility in the Swedish government?s management of the 2004 Indian Ocean tsunami disaster. The focus of the flow scheme is how grammatical constructions can be used in the interest of rhetoric?s to on the syntax (non-explicit) level of the text indicate and place responsibility with or outside of involved individuals. The main conclusion of the syntax analysis performed is that Danielsson in his autobiography in fact does not use very many of the constructions described in the flow scheme, whereby it can be concluded that the syntax analysis in this case wasn?t so ?revealing?.

Elektrisk skorstenständare

Between 1965 and 1974, the Swedish Parliament decided to build one million dwellings, called Million Program. The million program buildings were erected with new, untried design solutions, in a short range of time, and at low cost. The residential buildings from that time are now greatly in need of renovation. The municipal housing company, Gavlega?rdarna, renovates and improves the energy efficiency at some of it?s apartment buildings in the district Sa?tra, Ga?vle.

Vitvarueffektivisering med hjälp av värmelagring : Simuleringsstudie kring energiförsörjning av vitvaror med hjälp av värmepump & ackumulatortank

The constant need of energy is something that affects us all no matter our current situation. Whether we are driving our car to work, taking the elevator or using the oven to cook dinner we end up relying on energy. Our whole society is continuously striving to achieve a higher grade of efficiency and the process of supplying ourselves with energy is no exception. The importance of appliances in our everyday life cannot be exaggerated and thus the importance of their high efficiency.Efficiency is already a keyword in the appliance industry with labels, stars and numbers helping us choosing the most suitable option for the task ahead. No matter how efficient appliances often use pure electricity as their energy source.

Evaluation of a Flow Cytometry Method for Identifying and Quantifying Fetal Red Blood Cells in Maternal Blood

Hemoglobin is an oxygen binding protein in erythrocytes. Hemoglobin is composed of four polypeptide chains. During the fetal stage the type of hemoglobin called fetal hemoglobin (HbF) dominates. After birth HbF is replaced by adult hemoglobin (HbA). HbF persists in concentrations less than 1%.

Produktivitetsanalys i hyvelanläggningen vid Chemwood AB i Alvesta

Produktivitet kan inom tillverkande industri användas som ett nyckeltal för mått på effektivitet; enkelt uttryckt hur bra man utnyttjar tillgängliga resurser för att skapa god avkastning. För att öka produktiviteten bör man identifiera och eliminera, alternativt minska risken för störningar i flödet. Bland störningar återfinns bland annat ställtid och justeringar. Genom att reducera tiden för omställning av maskinutrustning ökar tillgänglig produktionstid liksom flexibiliteten i produktsortimentet.Syftet med studien är att identifiera och belysa produktivitetshämmande företeelser och ge förslag till produktivitetshöjande åtgärder för och vid postning såväl för hela flödet vid Chemwood AB i Alvesta. Utöver närmare studie av postningsförfarandet identifierades och analyserades även andra för flödet störande företeelser.Postningsförfarandet vid Chemwood AB kan enbart normeras till den grad där grundläggande moment ingår.Tiden för postning kan reduceras genom enkla åtgärder..

Produktivitetsanalys i hyvelanläggningen vid Chemwood AB i Alvesta

Produktivitet kan inom tillverkande industri användas som ett nyckeltal för mått på effektivitet; enkelt uttryckt hur bra man utnyttjar tillgängliga resurser för att skapa god avkastning. För att öka produktiviteten bör man identifiera och eliminera, alternativt minska risken för störningar i flödet. Bland störningar återfinns bland annat ställtid och justeringar. Genom att reducera tiden för omställning av maskinutrustning ökar tillgänglig produktionstid liksom flexibiliteten i produktsortimentet.Syftet med studien är att identifiera och belysa produktivitetshämmande företeelser och ge förslag till produktivitetshöjande åtgärder för och vid postning såväl för hela flödet vid Chemwood AB i Alvesta. Utöver närmare studie av postningsförfarandet identifierades och analyserades även andra för flödet störande företeelser.Postningsförfarandet vid Chemwood AB kan enbart normeras till den grad där grundläggande moment ingår.Tiden för postning kan reduceras genom enkla åtgärder..

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