14 uppsatser
Today most ice rinks in Sweden use secondary refrigeration systems with a solution of calcium chloride and water as secondary refrigerant. Due to the large amount of energy such a system uses more efficient systems would be desired.An earlier study concluded in the possibilities …
En studie i produktionsslag
… tool Wikells Sektionsdata andassays of life cycle costs for different refrigeration alternatives. The result is showing that refrigeration by using compressor chillers seems to be themost advantageous option for the buildings in Noatun. Investments of a newcompressor chiller and …
… Serum samples from dogs and cats were stored in room temperature and under refrigeration during 3 days and analysed daily during this time. The changes in concentration were within a range of 10%. In earlier observations at the laboratory, fructosamine results seemed to be …
… is a small part of a gas turbine research project where a vapour absorption refrigeration system (VARS) and a high pressure regenerative turbine engine (HPRTE) are integrated together. The main objective is to build a computer model of the VARS. The computer model is supposed to …
… to the warm months; the most electricity intense processes are the refrigeration and the ice-making. To meet the wish of the fishing association, to reduce their cost for electric energy and at the same time get an environmentally friendly interface, the possibilities for …
… A study of the American system, ASHRAE, American Society of Heating, Refrigeration and Air Conditioning Engineers and the standards used in Singapore has been made to highlight the difference. A comparison between a Swedish wall construction and the technical solutions made in …
… annuity method. The case is focused on the summer conditions when the sorptive refrigeration willbe used. According to that calculations and assumptions have been made for probableenergy consumption and production. There after the investment costs weredetermined. The results …
Analys av framtida energisystem
… heating options for the biogas process and the completion of the current refrigeration compressors with a heat-driven chiller, all to increase the usage of the waste heat from the cogeneration, and minimize the need of purchased energy.The results show that Wapnö can reduce …
Fallstudier om svenska avlopp, kylska?p och bilar
… such activities and how it affects the innovativeness of wastewater treatment, refrigeration and automobile manufacturing industries. The aim is also to investigate how environmental policy is shaped by opinion, technology and relationships within and to an industry. In each of …
Kan borrhålskyla ersätta en kylmaskin?
Syftet med rapporten är att göra en jämförelse av två olika metoder för att kyla ett fiktivt kontorshus som är 2 000 m² stort och beläget i Västerås. För att representera ett normalt kontorshus har kyleffektbehovet valts till 50 W/m² vilket ger totala kyleffektbehovet 100 kW. I …
Kylmaskinerna på Saab ABs fastighet i Järfälla står för en stor del av den totala användningen av elektricitet i fastigheten. Därför är det viktigt att undersöka och analysera hur dessa kylmaskiner presterar i dagsläget och vilka åtgärder som kan vidtas för att förbättra …
energiflöden och kylning
… methods for the cooling of data centers. Several means of cooling with the refrigeration cycle have been studied, as well as the feasibility of using free cooling in different parts of Sweden. In addition, the possibilities of transferring excess heat to a nearby district …
… processes ” 61.9 kWh/m2/yearLighting ” 35.7 kWh/m2/yearFans ” 33.2 kWh/m2/yearRefrigeration ” 21.8 kWh/m2/yearCompressed air ” 18.9 kWh/m2/yearComputer units ” 7.8 kWh/m2/yearFrequency converters ? 4.4 kWh/m2/year Waste heat from industrial processes, primarily from the …
samt förslag på energieffektiviserande åtgärder
… energy-intensive processes, such as steam generation, compression of air and refrigeration of large spaces. These needs are supplied with electricity. Furthermore, the industry is a major consumer of district heating, particularly for heating the supply air in the ventilation …
