With growing economies and better living standards in many parts of the world today, there is a need of expanding the capacity of generating electricity. The alternatives for renewable energy technologies are not fully developed and have still some problems to conquer.The company Minesto has developed a technology that is called Deep Green. It is designed to gain electricity from tidal currents. Deep Green works in a similar way as a kite that is attached to the seafloor with a moving wire. It contains of a wing that moves due to the water current.

AbstractIn the fall of 2003 a project was started in the Swedish building sector that is called BASTA (the building sectors’ termination of especially harmful substances). The project is operated by the building companies NCC, Skanska, PEAB and JM, the Swedish Building Industry and the Swedish Environmental Institute IVL. The purpose of the project is to create a common environmental assessment system for the entire building industry and with the help of this system phase out the use of especially harmful properties from building products.In a large sense BASTA works like this; On the BASTA web site there is a database, to which a supplier can register the company and the company’s products. Only those products with a substance content that fulfil the demands of the BASTA system, is to be registered. As it is the supplier himself that carries out the registration of the company and the company’s products to the system, the BASTA-organisation annually controls that the companies that are registered in the database, fulfils BASTA’s demands.Since NCC is one of the companies that operates BASTA, BASTA is probably going to be the environmental assessment system that is recommended for the company in the future.

AbstractIn the fall of 2003 a project was started in the Swedish building sector that is called BASTA (the building sectors’ termination of especially harmful substances). The project is operated by the building companies NCC, Skanska, PEAB and JM, the Swedish Building Industry and the Swedish Environmental Institute IVL. The purpose of the project is to create a common environmental assessment system for the entire building industry and with the help of this system phase out the use of especially harmful properties from building products.In a large sense BASTA works like this; On the BASTA web site there is a database, to which a supplier can register the company and the company’s products. Only those products with a substance content that fulfil the demands of the BASTA system, is to be registered. As it is the supplier himself that carries out the registration of the company and the company’s products to the system, the BASTA-organisation annually controls that the companies that are registered in the database, fulfils BASTA’s demands.Since NCC is one of the companies that operates BASTA, BASTA is probably going to be the environmental assessment system that is recommended for the company in the future.

Ocean Thermal Energy Conversion, OTEC, is a sustainable energy conversion technology that is not yet commercialized. OTEC is a technology that utilizes the temperature difference in oceans between the warm surface water and the cold water at 1 000 m depth to run a Rankine Cycle. This technology can produce electricity and provide synergies like fresh water, air conditioning and aquaculture. A simulation program for three alternative OTEC systems has been created in order to decide which OTEC system is most profitable; closed, open or hybrid system. In this simulation a production cost analysis is performed in order to investigate and decide which one of the three systems that has the lowest production cost. The production cost analysis also analyzes if the profitability is affected by the size of the facility. After these analyzes, the most profitable of the three different OTEC-systems is expanded by an installation of solar collectors in order to see if the thermal efficiency is improved. The result shows that the most profitable system varies with the size of the facility.

Va?rlden sta?r info?r en av de kanske sto?rsta utmaningarna na?gonsin, att begra?nsa ma?ngden va?xthusgaser i atmosfa?ren till ha?llbara niva?er. Fo?r att uppna? detta ma?ste alla delar av samha?llet effektivisera och begra?nsa sin energi och resursanva?ndning.I detta kandidatexamensarbete har ett av A?sbacka Tra?dga?rds va?xthus i So?derhamn studerats fo?r att underso?ka mo?jliga investeringar till reduktion av den energianva?ndning som idag ra?der. De energireducerande a?tga?rderna har simulerats med programvaran IDA ICE 4.6 och da?refter analyserats och ja?mfo?rts med varandra.

AbstractIn the fall of 2003 a project was started in the Swedish building sector that is called BASTA (the building sectors’ termination of especially harmful substances). The project is operated by the building companies NCC, Skanska, PEAB and JM, the Swedish Building Industry and the Swedish Environmental Institute IVL. The purpose of the project is to create a common environmental assessment system for the entire building industry and with the help of this system phase out the use of especially harmful properties from building products.In a large sense BASTA works like this; On the BASTA web site there is a database, to which a supplier can register the company and the company’s products. Only those products with a substance content that fulfil the demands of the BASTA system, is to be registered. As it is the supplier himself that carries out the registration of the company and the company’s products to the system, the BASTA-organisation annually controls that the companies that are registered in the database, fulfils BASTA’s demands.Since NCC is one of the companies that operates BASTA, BASTA is probably going to be the environmental assessment system that is recommended for the company in the future.

Offshoreindustrin på Nordsjön sysselsätter ett stort antal offshorefartyg med olika uppdrag för att stödja produktionen av olja och gas. Prospektering av nya oljefyndigheter, bogsering av installationer och att förse installationer med förnödenheter är några av de uppgifter offshorefartyg utför.För att genomföra arbetsuppgifter säkert, använder offshorefartyg och installationer sig av North West European Area Guidelines. Riktlinjer för hur arbeten skall utföras säkert och för att undvika olyckor som kan skada både människa, miljö och ekonomi.Kollisioner mellan offshorefartyg och installationer sker ändå, med varierande konsekvenser. Syftet med detta examensarbete är att ta reda på vad som sker på bryggan, ombord på ett offshorefartyg när det skall utföra arbete intill en installation. Rapporten är tänkt att ligga till grund för framtida arbeten som syftar till att öka säkerheten inom branschen.Som datainsamlingsmetod har gruppintervjuer utformade som fokusgrupper använts.

Offshoreindustrin på Nordsjön sysselsätter ett stort antal offshorefartyg med olika uppdrag för att stödja produktionen av olja och gas. Prospektering av nya oljefyndigheter, bogsering av installationer och att förse installationer med förnödenheter är några av de uppgifter offshorefartyg utför.För att genomföra arbetsuppgifter säkert, använder offshorefartyg och installationer sig av North West European Area Guidelines. Riktlinjer för hur arbeten skall utföras säkert och för att undvika olyckor som kan skada både människa, miljö och ekonomi.Kollisioner mellan offshorefartyg och installationer sker ändå, med varierande konsekvenser. Syftet med detta examensarbete är att ta reda på vad som sker på bryggan, ombord på ett offshorefartyg när det skall utföra arbete intill en installation. Rapporten är tänkt att ligga till grund för framtida arbeten som syftar till att öka säkerheten inom branschen.Som datainsamlingsmetod har gruppintervjuer utformade som fokusgrupper använts.

AbstractIn the fall of 2003 a project was started in the Swedish building sector that is called BASTA (the building sectors’ termination of especially harmful substances). The project is operated by the building companies NCC, Skanska, PEAB and JM, the Swedish Building Industry and the Swedish Environmental Institute IVL. The purpose of the project is to create a common environmental assessment system for the entire building industry and with the help of this system phase out the use of especially harmful properties from building products.In a large sense BASTA works like this; On the BASTA web site there is a database, to which a supplier can register the company and the company’s products. Only those products with a substance content that fulfil the demands of the BASTA system, is to be registered. As it is the supplier himself that carries out the registration of the company and the company’s products to the system, the BASTA-organisation annually controls that the companies that are registered in the database, fulfils BASTA’s demands.Since NCC is one of the companies that operates BASTA, BASTA is probably going to be the environmental assessment system that is recommended for the company in the future.

AbstractIn the fall of 2003 a project was started in the Swedish building sector that is called BASTA (the building sectors’ termination of especially harmful substances). The project is operated by the building companies NCC, Skanska, PEAB and JM, the Swedish Building Industry and the Swedish Environmental Institute IVL. The purpose of the project is to create a common environmental assessment system for the entire building industry and with the help of this system phase out the use of especially harmful properties from building products.In a large sense BASTA works like this; On the BASTA web site there is a database, to which a supplier can register the company and the company’s products. Only those products with a substance content that fulfil the demands of the BASTA system, is to be registered. As it is the supplier himself that carries out the registration of the company and the company’s products to the system, the BASTA-organisation annually controls that the companies that are registered in the database, fulfils BASTA’s demands.Since NCC is one of the companies that operates BASTA, BASTA is probably going to be the environmental assessment system that is recommended for the company in the future.

Offshoreindustrin på Nordsjön sysselsätter ett stort antal offshorefartyg med olika uppdrag för att stödja produktionen av olja och gas. Prospektering av nya oljefyndigheter, bogsering av installationer och att förse installationer med förnödenheter är några av de uppgifter offshorefartyg utför.För att genomföra arbetsuppgifter säkert, använder offshorefartyg och installationer sig av North West European Area Guidelines. Riktlinjer för hur arbeten skall utföras säkert och för att undvika olyckor som kan skada både människa, miljö och ekonomi.Kollisioner mellan offshorefartyg och installationer sker ändå, med varierande konsekvenser. Syftet med detta examensarbete är att ta reda på vad som sker på bryggan, ombord på ett offshorefartyg när det skall utföra arbete intill en installation. Rapporten är tänkt att ligga till grund för framtida arbeten som syftar till att öka säkerheten inom branschen.Som datainsamlingsmetod har gruppintervjuer utformade som fokusgrupper använts.

AbstractIn the fall of 2003 a project was started in the Swedish building sector that is called BASTA (the building sectors’ termination of especially harmful substances). The project is operated by the building companies NCC, Skanska, PEAB and JM, the Swedish Building Industry and the Swedish Environmental Institute IVL. The purpose of the project is to create a common environmental assessment system for the entire building industry and with the help of this system phase out the use of especially harmful properties from building products.In a large sense BASTA works like this; On the BASTA web site there is a database, to which a supplier can register the company and the company’s products. Only those products with a substance content that fulfil the demands of the BASTA system, is to be registered. As it is the supplier himself that carries out the registration of the company and the company’s products to the system, the BASTA-organisation annually controls that the companies that are registered in the database, fulfils BASTA’s demands.Since NCC is one of the companies that operates BASTA, BASTA is probably going to be the environmental assessment system that is recommended for the company in the future.

Dricksvattnet ombord på Sjöfartshögskolans fartyg Calmare Nyckel har vid tidigare provtagning visat på undermålig kvalitet. Orsaken till detta har inte undersökts innan. I detta arbete undersöks och identifieras orsaken och ett underlag för förbättring av vattenkvaliteten har tagits fram. Underlaget omfattas också av en arbetsbeskrivning för ombyggnation av färskvattensystemet och ett underlag för installation av en färskvattenproducerande anläggning. För att kontrollera vattenkvaliteten ombord genomfördes vattenprover och en undersökning av färskvattensystemet med endoskop.

Lower energy use in buildings is a result of increasingly stringent energy requirements across Europe. When conventional district heating technology is used in areas with low energy consumption heatlosses do not fall even though the amount of energy delivered is reduced. This reduces income for thedistrict heating company. To maintain their economic viability the district heating companies? majorchallenge is to implement new solutions that minimize heat loss.

The purpose of this report is to investigate the possibilities with drain water heat recovery (DWHR) in residential buildings. Information and relevant theory has been collected and summarized in this report. Calculations have been done for given scenarios to evaluate profits. DWHR heat exchangers use simple technology and have long life-time. The heat exchanger is connected to outgoing drainage pipe and incoming cold-water supply so countercurrent flow is accomplished.