Sökresultat:
1850 Uppsatser om Heat load characteristics - Sida 37 av 124
Energieffektiv processventilation för aluminiumvarmvalsverk
Syftet med detta examensarbete har varit att genomföra en nulägesanalys av Hall 7 på Sapa Heat Transfer AB i Finspång. Utifrån nulägesanalysen togs åtgärdsförslag fram som kan generera en effektivare uppvärmning, mindre yttre utsläpp och behagligare arbetsklimat. Problemet i Hall 7 är att processventilationen för varmvalsverk 2051 är ålderstigen och underdimensionerad, den saknar även värmeåtervinning och rening av processfrånluften. Detta leder till oplanerade driftstopp, höga underhållskostnader samt hög energianvändning.För att finna åtgärdsförslag för dessa problem genomfördes en nulägesanalys av Hall 7 genom att mäta luftflöden och temperaturer, analysera utsläppsmätningar och energianvändning samt intervjua personal.Utifrån dessa mätningar har fyra olika åtgärdsförslag tagits fram. De fyra åtgärdsförslagen är benämns: YIT, YIT (Enklare), Homehall och Ökad tilluft.Det åtgärdsförslag som anses vara bäst lämpat för att generera en effektivare uppvärmning, ge mindre yttre utsläpp samt ett behagligare arbetsklimat i Hall 7 är åtgärdsförslag Homehall.
Tätning eller ventilering mot fukt på kalla vindsutrymmen
This study was done regarding whether sealing or ventilation is the best solution to prevent moisture on cold attics. The authors of this report addressed the problem with moisture in attics when they started their cooperation with Peab.The methods included interviews with people, database research, and calculations of a project in Akersberga north of Stockholm. The conclusion is based on interviews and other information as they are analyzed in relation to the house of reference. The focus of this report is on problems with moisture in the attics known as cold attics.The background of the problem with moisture is that today?s slabs are usually insulated to save energy and that the attics nearly gives the climate as the outdoor climate.
Reklambyråer & Samhällsansvar : en studie av reklambyråers förutsättningar för ett socialt ansvarstagande
Background: Research results show that the potential of corporate social responsibility (CSR) has increased. That means there is a growing pressure on Swedish companies to act with responsibility: general public has a positive attitude towards companies that communicate their CSR. Advertising agencies have been criticized by their way to manage the question of social responsibility. One of the characteristics of an advertising agency is their anonymity; even though their products are extremely visible, it is rarely clear who gave rise to an advertising production. If this is put in relation to CSR in general, we find ourselves in a contradictory situation when CSR in many cases is about exposure of the responsible corporation.
Miljöcertifiering av ett byggnadsminne
Samtidigt som debatten kring jordens klimatförändring är i full gång har intresset för att miljöcertifiera byggnader vuxit oerhört. För fastighetsägare är det en möjlighet att bevisa för sina hyresgäster och köpare att byggnaden är hållbar. Är en byggnad miljöcertifierad har en oberoende part intygat att den uppfyller en nivå av hållbarhet som bestäms utifrån standardiserade kriterier. Fastighetsägaren kan alltså använda certifikatet i marknadsföringssyfte.Den här studien undersökte om en byggnad som är byggnadsminnesförklarad kan miljöcertifieras med Miljöbyggnad. Målet var att hitta kostnadseffektiva lösningar för att uppfylla de miljöcertifieringskriterier som eventuellt inte uppfylls idag.
Systemlösningar för plus- eller passivhus : En studie med syftet att lösa energibehovet för ett specifikt hus.
The purpose of the house which is the basis of this report is to be able present itself on the market as a relatively cheap and at the same time a climate friendly choice. The house is supposed to be able to be built anywhere in Sweden and the rest of Scandinavia in a short period of time. This puts demand on what kind of heating system the house can have, since not all places have the geographic advantage of being able to use geothermal or district heating. Therefore the heating system choices will only include those that are not limited by their geographic location. The house will be built in modules which only require the groundwork to be done before the house can be erected. In this report "System solutions for plus or passive-housing" a comprehensive literature search has been conducted as well as a number of calculations.
DET AMERIKANSKA PRIMÄRVALET I NÄRBILD : En kvantitativ studie av hur Barack Obama och Hillary Clinton framställs och kommunicerar på Internet
Purpose/Aim: To achieve a deeper knowledge and better understanding of how Hillary Clinton and Barack Obama use rhetoric figures and body language to convince the people that they are the individual who should be elected as the democratic nominee and if and in which way Internets characteristics take practical expressions in the supply of videos on YouTube and Barack Obamas and Hillary Clintons official websites.Material/Method: Quantitative content analysisMain results: Hillary Clintons and Barack Obamas ability to spread out exactly the information they want on their official websites takes expression in form of videos with only positive information. Hillary Clinton and Barack Obama try to create a form of advertising on their official websites through the publication of these videos. Internets special characteristics are highly visible and realized in the videos on YouTube. Users are very active which take expressions in creative creations of videos. On YouTube there also exists negative information about Hillary Clinton and Barack Obama.
Varför uppförs så få bostadsrätter med passivhusstandard i Sverige? : En fallstudie mellan ett passivhus- och en konventionell fastighet
Abstract Background: In 1997 the Kyoto Protocol was signed, it?s an international agreement which is aimed to reduce greenhouse gas emissions. Sweden's goal is to reduce energy using in buildings with 20 percent by 2020 and 50 percent by 2050. This is a comparison with levels from 1995 (Glad, 2006). For Sweden to be able to reach its goals, they need to construct more low-energy buildings (Åhman, Wahlström & Lundblad, 2010).
Designriktlinjer för övervakningssystem
Design principles are usually used by interaction designers to help creating a user friendly design by making the designer think about the different aspects of the design. These design principles has been further developed since they emerged in the 1990s, and today they're often used in the field of interaction design. By using the design principles, bad design can be avoided and the frustration of the user reduced. Design patterns is described as structural and behavioral characteristics to improve the environment in user interface amongst other areas. These characteristics could make things easier to understand or improve their appearance, they make tools more usable.The purpose with this essay is to identify design guidelinesto be used by developers when designing surveillance systems.
Provning av ythärdade material tänkta för
transmissionsdetaljer
This technical report describes the master thesis in material engineering called ?Testing of surfaced hardened materials conceivable for gears and shafts?. The work extents 20 academic points. Land systems Hägglunds manufactures and sells different kinds of combat vehicles and terrain vehicles. Since the demands for bigger and stronger vehicles increases all the time, so are the demands on shafts, gears and other transmission details.
Utveckling och design av spegelskåp för badrum
This report is a documentation of a Master?s thesis of 20 credits performed at the educational program of Technical Product- and Production Development with Design at Halmstad University. The project is carried out in cooperation with Hafa AB in Halmstad.The purpose of this project was to bring forth a concept of a bathroom cabinet for Hafa?s new selection Young through creative design methods. The selection is supposed to attract the younger purchaser but also a target group that dare to experiment with home furnishing and appreciates new design.
Kaffesump som substrat i biogasanläggningar eller som bränsle i fjärrvärmeverk : en studie av effekter på växthusgasutsläpp och kostnader
Each year, the coffee machines at Ericsson in Kista produce around 100 tons of ground coffee waste.The companies Coor Service Management, Löfbergs Lila and Selecta are all responsible for differentstages in the logistical chain in delivering coffee and, together with Ericsson, they want to increasetheir environmental benefit. The plan is to produce biogas through anaerobic digestion instead ofincinerating the coffee waste in a heating plant. The results are to be presented as different businesscases in which different biogas plants are compared with the reference case (heating plant),comparing costs and environmental impacts.There are two major environmental benefits from producing biogas; reduced carbon dioxideemissions from when fossile fule is replaced by carbon neutral biogas, and reduced emissions fromreturning digestate from the bio reactor to farmland instead of using industrial fertelizer.In order to determine the biogas potential in coffee waste, a couple of properties had to bedetermined in a laboratory. Properties such as the dry substance content, heating value, moisturecontent and ash content. The results show that 100 tons coffee waste could produce around 16 500Nm3 biogas which would contain 163 MWh.The biogas reactor and upgrade plant both need energy gas to function and uses around 14 MWh ofthe produced gas.
Statuskontroll av Paradisskolans elektriska belastning
In this thesis is studied the electrical load of Paradisskolan with respect to power quality and energy consumption. The school's owner Trollhättans Tomt AB is also interested to know if they can reduce their costs by changing to smaller meter fuses. A recurring ground fault that?s been recorded from powerpanel A1A has been investigated. The school's equipped with an electrical bonding system, harmonic filters for the third harmonic currents, TN-S system from feeding transformer and groundfault monitoring.
Laborationsmätning av vindtäthetens betydelse för en väggs U-värde
To fulfill the climate target that EU and the Swedish government have decided to apply, it becomes increasingly important that the energy efficiency of existing buildings and making new buildings energy efficient as possible. Of Sweden?s total energy consumption in 2011 was 40% used by residential and service. Of the 40% of the energy consumption was 60% used for heating and domestic hot water. A report from year 2012 shows that one reason why the heating volume is so great could be due to underestimating on the energy consumption for the heating in the planning of the building.
Uppfattningar om tryckved bland träbearbetande företag i Sverige :
The primary purpose of this study has been to investigate the Swedish timber industry?s
perception of compression wood. A secondary aim has been to describe particular areas
within the production process where compression wood is likely to cause problems.
This study has mainly been carried out as a questionnaire. In order to connect the findings to current research, additional information has also been collected by means of a literature review. The questionnaire has been intended for sawmills and wood-manufacturing companies from various production classes and owner categories, as well as from different parts of the country.
Sawn softwood in Egypt ? a market study
This market study was written on behalf of Uni4 Marketing (U4M) and investigates the Egyptian softwood market. The objective was to identify what characterises a good softwood supplier according to Egyptian importers. In addition to this U4M?s competitiveness compared to their competitors was evaluated. The study also identified possible sources of competitive advantage possessed by U4M.