Miljonprogram is a Swedish building program from 1964 to 1975. During that time about a million homes were constructed. Now, almost 50 years later, they are in desperate need of renovation. In order to fulfil the Swedish environmental objective to decrease energy consumption 50 per cent until 2050, considerable housing stock built under the Miljonprogram has to be renovated.Focus in this thesis is on the building services and theirs profitability that can decrease energy consumption in households build during the Miljonprogram. Building construction is not considered in this report.

Detta examensarbete är utfört på ITT W&WW i Sundbyberg, Sverige, i samarbete med KTH, Instutitionen för Maskinkonstruktion. Arbetet har gått ut på att finna parametrar som kan användas för att detektera sörpling i en pump. Arbetet har fokuserat på att undersöka om vibrationer och ljud kan ge information om när pumpen sörplar eller ej, samt att utveckla en algoritm baserat på dessa parametrar.När en pump pumpar en blandning av luft och vatten kallar man det att den sörplar. Detta innebär slitage på pumpen samt energiförluster, då verkningsgraden minskar betydligt. Detta är ett problem för bland annat dräneringspumpar inom gruv- och byggindustrin där permanenta installationer och externa sensorer för att undvika sörpling ofta saknas.

It is a well-known fact that textiles and carpets have benign sound-absorbing properties. It is desirable to have quantified values of these properties ? especially for architects and interior designers. They often need to be able to giveaccount for the acoustic properties of their designs at a relatively early stage and sometimes have strict acoustic classifications imposed upon them by their contractor. A product with documented acoustic properties would aid when prescribing interior elements.The purpose of this thesis is to develop a wall-mounted panel in hand-tufted material ? aesthetically pleasing and versatile but also having documented and quantified acoustic properties.

Climate change is the modern society?s common issue. The developed countries areconsuming more than what is sustainable, and the climate change due to the use offossil fuels can be seen clearly. EU has specified goals, in order to stop furtherdamage, which demand that every member state have to reduce its energyconsumption by 20 % before 2020 and 50 % before 2050, relative to 1995.The Swedish government uses a number of instruments to encourage reduction in theusage of energy, but every individual has to contribute to reach the goals.With increasing energy price the cost of living is going up. A lot of people are lookingfor ways to save energy and not be affected as much by the increasing price.Investments for insulation, replacement of windows and replacing old heating systemfor a new efficient heat pump is getting more and more common.This thesis is about investigating the possibilities in becoming independent from buyingenergy for households.

Cooling down the indoor air can be done in several ways. One way is desiccantcooling which will be used at the Stockholm Arena. This method is used in airhandling units that use temperature changes and moisture fluctuations in the air. Oneof the steps is to add heat during the cooling process in order to reduce the relativehumidity of the exhaust air. The air passes thru an adsorptions rotor which thenabsorbs moisture from the supply air.

The industrial sector accounts for a large share of greenhouse gas emissions. To reduce its negative impact on the environment is crucial in the quest for a sustainable future. In discussions of the industrial sector's impact on the environment guidelines have been highlighted as a tool to assist the industries in their efforts to change the relationship between the consumption of energy and production. This by improving energy efficiency and a shift to the best available technology. During the past 30 years the steel industry has reduced its energy consumption per ton of steel produced by 50 percent.

Ett undersöknings- och utvecklingsarbete för att lösa ett problem med att dränkbara pumpar i ett vattenavrinningssystem gick sönder med perioder på två år i genomsnitt, utfördes i samarbete med Cementa AB i Skövde. Orsak till pumpars haveri söktes och fanns vara bristande rutiner och kunskap om det underhåll pumparna krävde. För att lösa detta problem utvecklades riktlinjer för nyinköp av torruppställda pumpar för att möjliggöra kontinuerligt underhåll. Då möjligheter för placering av torruppställd pump saknades utvecklades ett pumpfundament för placering av torruppställd pump. Krav för utvecklingsarbetet togs fram i samarbete med Cementas underhållsavdelning och teoretisk dimensionering av dränkbara länspumpars dåvarande volymflödeskapacitet utfördes.

Examensarbetet har utförts på Johnson Pump AB i Örebro och behandlar tillverkningen av marina kylvattenpumpar. På den allt mer globala pumpmarknaden har konkurrensen blivit hårdare och Johnson Pump har märkt ökade krav på främst kostnadseffektivitet och leveransprecision. Samtidigt efterfrågas ett brett sortiment. I dagsläget har man dock problem med långa ledtider och höga lagernivåer, varför man på senare tid har ställt frågan om det bästa vore att kundorderstyra tillverkningen inom det marina affärsområdet. Syftet med arbetet är därför att undersöka möjligheterna att övergå till en högre grad av kundorderstyrd produktion och se vilka konsekvenser detta skulle medföra på kostnader och leveransservice.För att det ska bli möjligt för Johnson Pump att tillverka pumphus mot kundorder, måste planeringen bli tydligare och mer strukturerad.

AbstractTitle: Internal Communication at a large mobile operator (Internkommunikation hos en mobiloperatör - en studie av motivation och upptagningsförmåga av information hos butikschefer)Number of pages: 43Author: Helena IsakssonTutor: Peder Hård af SegerstadCourse: Media and Communication Studies CPeriod: Fall term 2006University: Division of Media and Communication, Department of Information Science, Uppsala University.Purpose/Aim: The purpose of this essay is to gain an insight in how a corporations store managers motivation affects the degree of information they absorb from information channels.Material/Method: The method that had been used in this essay is quantitative. It is based around a questionnaire aimed towards store managers and consequently used it to run regression analysis using the software package SPSS.Main results: The main result of the essay is that the motivation among store managers is positively related to the degree to which they absorb information. Thus, a possible problem exists for the corporation in that they need to make sure that the store managers are and stays motivated. Further, it seems that the longer a store manager has been employed by the corporation the less information is absorbed. The reader should although interpret the results with caution, since the limited sample could bias the estimates.Keywords: Internal communication, organizational communication, motivation, information, information channels and absorption of information..

Denna rapport handlar om införandet av ett gasspjäll i den HCCI motor som utvecklas påKungliga Tekniska Högskolan (KTH) i Stockholm. Detta gasspjäll styr effekten ocharbetssättet i motorn. Med en gasspjäll är det möjligt att byta från gnistantändning tillHCCI-läge. Under projektet har många andra områden förbättrats, till exempel luft- ocholjepump. För att dra slutsatser är det nödvändigt att analysera några av motorns data sominsamlats under utvecklingen, såsom cylindertryck, insprutningsdata och tändläge.

AbstractElectricity consumption is a globally increasing problem caused by the high share of electricity produced in coal power plants. These contribute to high carbon emissions when only about 1/3 of the heat generate electricity and the remaining 2/3 of the heat cools off. Combined heat and power plants (CHP) have high efficiency because they use the residual heat for domestic heating. The CHP plant often use fuels from renewable resources, giving them a lower carbon footprint, but are also depending on the heat demand. If electric powered products such as drying cabinets convert to heat powered products more environmentally friendly electricity will be produced by CHP plants, which can supplant electricity, produced from coal power plants and reduce carbon emissions.

The municipality, of Gatukontoret in Local government of Borås has in the long run, a required need to look after the current heating devices (the gas production plant) in sewage treatment plant, called Gässlösa. The practical work of the examination is about, trying to find a better way to take care of the current heat recovery. That may be one way or another, rather easy to implement in the existent construction.Through the work to increase the efficiency of the gas engine, implement of some external cooling system by heating exchange device. That gives an opportunity to heat (primary) the digester, (but even all internal public areas) with its own superfluous heating.The report shows that if the management group may invest 422 704 crown to implement a heat exchanging device, it gives more space to reduce the need to buy expensive external energy. Gatukontoret´s pay off time, for buying machines, is 20 years, with reservation to calculate with 4 percent internal interest, leads to the yearly mount of 31103 crowns.If Gässlösa increases the gas engine time in (effective) duty approximately (correspondingly) 48 hours a month the entire investment will generate a profit in January in year seven after the implementations.

Stockholms vattenskärning AB in Kungsängen has through the acquisition of a company begun to design and produce aircraft heaters whose origin is early 1970s which follows a high inefficiency in terms of energy consumption and size.The aircraft heater, which is sold worldwide, serves its purpose for customer satisfaction and has done so ever since it was developed in the 70s.Stockholms vattenskärning AB is now investigating the possibility in making the aircraft heaters more efficient, both in terms of energy consumption but also on a more efficient design with the belief that it would lead them to an edge in the market. The aircraft heater consists of several main components whose function altogether is to keep passenger aircrafts warm while they are on the ground.This project has been limited to the further development of the heat exchanger package which accounts for the conversion of the hot medium to the fresh air being carried in to the aircraft cabin. Work has been divided into different phases in order to create a better understanding of the project range and to make it easier to divide the various elements in the time available, 10 weeks. These phases are literature review, situation analysis, concept generation, CAD, concept comparison and writing reports.After the initial literature review was made, a fundamental theory was written which is essential in understanding the remaining parts of the project.With the theoretical part as support, measurements and calculations were made on the current heat exchange package in a situation analysis to ensure its operation and efficiency.In the concept generation phase, the collected facts from the literature review was used as the basis for creating a matrix. The purpose of the matrix was to indicate the two most suitable types of heat exchangers to develop four new concepts out of.In the CAD phase the four concepts was drawn up and then described with text and images.The last phase is the concept comparison where a concept selection matrix is used to function as a decision basis for further production at Stockholms vattenskärning AB. The four concepts have been developed based on the current heat exchanger and is gradually changed into a design of a cross-flow heat exchanger constructed out of stainless sections. The purpose of this is to have gradual upgrading of the heat exchanger as an option, in order not to saturate the market..

The study evaluated the Mutant Prevention Concentration (MPC) of Pradofloxacin on three Escherichia coli (E.coli) strains, 2 wildtypes and one first-step gyrA resistant mutant. We also measured the value of AUC (Under the Concentration)/MPC that prevents growth of resistant mutants. It is of importance to reach a concentration above MPC that prevent E.coli from developing resistance against the antibiotic.We used an in vitro kinetic model where we added bacteria? and antibiotic. The culture flask was attached to a pump with an adjustable pump-speed.

Wood pellets are an upgraded product of residuals from several wood processing industries, for example saw mills and pulp industries. The pellets are produced by pressing the milled and dried sawdust to cylindrical units with a higher density than the initial raw material. Pellets have great benefits compared to the raw material: high energy per volume, good transport and storage properties and homogeneity. Several parameters collaborate in the whole process, which makes it complex. Wood is a heterogeneous material, chemically and structurally dependent on wood parts, habitat and storage procedures.