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809 Uppsatser om Passive heat - Sida 48 av 54

Automatisering av flexibel fixtur

This thesis was conducted at Linköping University and SAAB Aerostructures, Linköping, and focuses on the automation of flexible fixturing in machining applications. At Linköping University a project called "Koofix" is conducted with support from Strategiska stiftelsen and several manufacturing industries including SAAB Aerostructures. The purpose of this project is to develop a more cost-effective, flexible, technique for fixation of workpieces during processing and assembly.Fixtures are an important part during the machining process, especially if you process the parts with high accuracy. Today a large number of fixtures are used at SAAB and they would prefer to reduce the number of fixtures by using flexible fixtures instead. SAAB uses one fixture for each article and this result in a high fixture cost and it also takes time to design and construct a new fixture.There are several advantages with using a flexible fixture such as that you can process workpieces with different length, height and thickness in the same fixture.

Vertikalt växthus i Kiruna : Med spillvärme från LKABs gruvindustri

Städerna växer och samtidigt ökar efterfrågan på närodlade och ekologiska grödor. För att klara av att producera närodlat och mer hållbart skulle ett alternativ vara att odla i så kallade vertikala växthus. I Kiruna finns Sveriges största malmgruva som drivs av företaget LKAB vars olika processer leder till spillvärme. I Kiruna är klimatet kallt jämfört med större delen av Sverige och därför erfordras uppvärmning om odling ska kunna ske året runt i ett växthus. Examensarbetets uppgift är därför att undersöka hur man kan utnyttja spillvärme till ett vertikalt växthus i samband med en ny kontorsbyggnad på LKABs gruvområde.

Project Inti : Produktutveckling av en solugn

In this report the two authors, and project contributors alike, describe their work withdeveloping a solar cooker intended for usage in the developing countries of the world.Specifically, the work aims at developing a new, solar heat driven cooking device, possiblybased upon the current product. This should, in comparison to the current product, be lighter,easier to transport and to produce. Also, the new product?s production mustn?t be more costlythan today and the included materials and components must be obtainable from within theBolivian national borders where the product is currently produced. During the project, certainadvantages with a more efficient, and, above all, a more moderately priced product, werediscovered.

Premiepension : En kvalitativ studie om hur pensionssparare i Sverige beter sig vid placering av premiepensionen, bland de som har gjort ett aktivt val av fonder

Alla individer som har arbetat och bott i Sverige omfattas av premiepensionen. Det innebär att individer i Sverige som betalar skatt tvingas till ett ställningstagande på den finansiellamarknaden.Många individer saknar kunskap om finansiell planering för att kunna fatta genomtänkta ekonomiska beslut för premiepensionen. Många sparare är av den anledningen i behov av hjälp och stöd, samt individanpassad information om finansiell planering. Under de senaste åren har konkurrensen inom den finansiella tjänstesektorn varit ett omdebatterat ämne. På grund av att kritik har riktats mot finansiella tjänster i anknytning till premiepensionen, saknar individer förtroende för den finansiella tjänstesektorn.

The importance of shade for dairy cattle in Sweden.

Today, there are no regulations saying that cows must have access to some kind of shelter at pasture during the summer. In more tropical countries, it is well-known that dairy cows might suffer from heat stress when exposed to sun and high temperatures. The well-being of the cows is thereby reduced and the production may also decrease. In Sweden, no research has been done in the area and therefore it is now a clear need of improved knowledge.The purpose of this study was to investigate the importance of shade for dairy cows in Sweden. The behaviour of 30 cows was examined to see any differences between cows with access to shade and cows without access to shade.

Jämförande undersökning av värmeåtervinning ur frånluft i två flerbostadshus med frånluftvärmepumpar

Två olika värmesystem i två flerbostadshus har analyserats. Målet med analysen är att få en uppfattning om vilket värmesystem som är mest fördelaktigt i flerbostadshus. I analysen jämförs två olika värmesystem. I värmesystemen används två olika sorters frånluftsvärmepumpar för att återvinna värme ur frånluften. När värmepumparna inte klarar av att producera tillräckligt med värme för att täcka fastighetens värmebehov används fjärrvärme som spetsning.

Wobblerpump

The task was to design and manufacture a submersible displacement pump working with the wobble plate principle. The main task for the Wobble plate pump is to be used as a sewage pump for smaller households or dewatering pump in environments where small flows and high pressures are acquired. For these purposes ITT Flygt sell a screw pump, PC-Grinder 3068. The hydraulic part of the PC-Grinder is manufactured by a subcontractor. Therefore ITT Flygt wants to evaluate an alternative to their screwpump PC-Grinder, which can be entirely manufactured by them self.

Fermented sausage : product development at Lindell's Gårdsslakteri

Product development is a risky business; many products never yield profit, but it is also ne-cessary for a company?s survival in a competitive business where the costumers change their requests constantly. Consumer-led product development is developed from the wish to fill the consumer?s needs and expectations and thereby be more likely to succeed. Lindell?s Gårdsslakteri AB is a local slaughter and meat processor in Västergötland.

Hästars aktivitet och liggtid på madrasserade gummimattor i box

Sleep is essential for all mammals and they all have different sleep patterns. Wild horses normally spend 2-8.5% of a 24-hour period in recumbent position while stabled horses lie down 11-20%. To fulfil the need of rapid eye movement (REM) sleep the horse must lie down with support against the ground for the head. The lying behavior can be affected by external stimuli such as age, food intake, bedding materials and if the horses feel safe or not. This study investigates the lying behavior of horses on different bedding materials; wood shavings and filled rubber mats (HIT SoftBed®).

Varför personalekonomi?

Chapter 6 of the Ch?ndogya Upani?ad has often been treated in works on early Indian philosophy, as well as in some comparative studies on color symbolism. Attempts to place it in a larger framework against the background of late Vedic religion are, however, few, the rationalistic and ?tradition-challenging? appearance of the text having repeatedly been emphasized. But the doctrine contained in the text ? a cosmologic teaching on the three elements constituting the universe, each being characterized by a color (red, white, black) ? and their microcosmic counterparts in the human body, does have some clear affinities to the worldview of the Br?hma?as and ?ra?yakas, which posits a series of similar correlations (bandhu-) between macro- and microcosmos.

Bostadsgården : att se till de boende vid utformningen av bostadsgårdar - en litteraturstudie kring bostadsgårdens betydelse

This candidate essay is built on literature studies and discusses the meaning of the residential yard along with what you, as a landscape architect, should think about when you are designing functional residential yards. To do this I found it necessary to figure out what it is that makes people step outside their own apartment and out into the city?s public places. The reasons for this are numerous and many times individually affected. Something that plays a role in people?s outdoor life and prevents them from spending time outside is the lack of time, the technique of today and the feeling off insecurity.

Järnburens renodlade revsion.

Chapter 6 of the Ch?ndogya Upani?ad has often been treated in works on early Indian philosophy, as well as in some comparative studies on color symbolism. Attempts to place it in a larger framework against the background of late Vedic religion are, however, few, the rationalistic and ?tradition-challenging? appearance of the text having repeatedly been emphasized. But the doctrine contained in the text ? a cosmologic teaching on the three elements constituting the universe, each being characterized by a color (red, white, black) ? and their microcosmic counterparts in the human body, does have some clear affinities to the worldview of the Br?hma?as and ?ra?yakas, which posits a series of similar correlations (bandhu-) between macro- and microcosmos.

Värmeåtervinning från smidesprocess : Värme från smidesprocess blir varmvatten

SammandragDetta examensarbete utförs i samarbete med företaget Componenta Wirsbo AB. Componenta smider detaljer till den tunga fordonsindustrin. Företaget använder sig av sänksmide där materialet formas genom slag från två rörliga verktyg. Smitt material har mycket goda hållfasthets egenskaper samt en mycket homogen struktur.Företaget har som miljömål att minska sin uppvärmningsenergi med 5 %. Componenta arbetar även med ett Leanprojekt som ska leda till en mer kontinuerlig produktion.

Faktorer av betydelse för högt respektive lågt upptag av immunoglobuliner från råmjölk hos kalvar

Kalvar föds i det närmaste utan antikroppar då dessa inte kan passera placentan från ko till kalv. Således är kalvar helt beroende av att ta upp antikroppar från råmjölken för att kunna stå emot smittämnen så de kan hålla sig friska och överleva. I detta examensarbete har olika faktorer som kan påverka antikroppsöverföringen studerats. I en kommersiell mjölkbesättning samlades uppgifter in om 35 kor som kalvade under två månader. Prov togs från första mjölkningens råmjölk för undersökning av råmjölkens hygieniska kvalitet samt Brix-värde, vilket är en indirekt mätning av råmjölkens innehåll av IgG. Under kalvarnas första levnadsdygn noterades uppgifter om utfodrad råmjölksvolym, ålder vid utfodring, hur bra kalvarna drack mjölken, kalvarnas födelsevikt samt bedömning av vitalitet.

Undersökning av bindningsmekanismer vid pressning av metallaminat : Investigation of bondning mechanisms at the pressing of metal laminates

Increased understanding of the mechanisms that operate in conjunction with the welding of metal surfaces may help to improve existing manufacturing processes, and to enable new products and combinations of materials. The purpose of the project has therefore been to acquire a deeper understanding of what is happening in the bond for steel and for the factors that form the basis for a bond to develop between metals in the production of laminates by pressing. The merge has been done by pressing and the surfaces after the experiments have been studied in detail in the scanning electron microscope (SEM), energy dispersive X-ray spectroscopy (EDX) and with interferenceprofilometry in Wyko, to provide a greater understanding of the mechanisms that influence the bonding in the interface between metals. The project was limited to contain the materials Docol 1000, HyTens 1200, Aluminum AA3003 and a commercial steel. The parameters varied in the experiments to study their influence closer are temperature, pressure, heat treatment and pretreatment. This has been implemented by pressing with varying temperature and pressure.

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