Taiwan is the major country of importing LNG. In this paper discussed LNG cold energy recovery used in cold storage warehouse and other energy conservation systems. In the cold storage warehouse systems that showed the less temperature of cold storage warehouse the more exergy efficiency and the best exergy efficiency is 30%. Base on thermoeconomic analysis there was the optimal operation temperature at -70¢J. In the purifier nitrogen system (PNS), the investigation indicated the best efficient operating temperature at -150¢J. But with economic analysis the optimal design temperature of this PNS was -130¢J. And the last energy conservation system was the running power plane. In this research studied the power planes used LNG cold energy as inlet air-cooling systems. According to the investigation that showed the systems increased power output up to 14.4¢H in the 4.5¢J of inlet air cooling temperature. And these systems also improved the heat rate of power planes about 0.98%. The conclusions presented that the potentialities of LNG cold energy are huge, and with proper engineering and economic analysis could make these energy conservation systems more feasible.

Transportval vid tjänsteresor är en viktig fråga då universitet och högskolor var en av de tre myndigheter med högst mängd utsläpp från tjänsteresor för året 2017. Det är särskilt viktigt för Linnéuniversitetet som är miljöcertifierat och har en Mötesoch Resepolicy för att minska sina utsläpp. Syftet med denna studie var att ta reda på vilka faktorer som påverkar universitetsanställdas val av transportsätt vid tjänsteresor samt vad som krävs för att målgruppen ska välja de mer miljövänliga alternativen. Metoden som användes var en webbenkät i kombination med en conjointanalys för att få både kvantitativa och kvalitativa resultat. Den yrkesgrupp som var mest representerad av respondenterna var Teknisk- och Administrativ personal vars syfte med tjänsteresan främst var möten och konferenser. Resultaten från studien visade att de avgörande faktorerna för respondenterna var tid, kostnad, miljö, pålitlighet och inverkan på fritid. Det som respondenterna ansåg krävdes för att de skulle välja tåg över flyg var möjlighet till flextid under restiden, att övernattningar beviljas av universitetet samt förbättrad kollektivtrafik. / Transport choice for business travel is an important matter since universities and colleges were one of the top three authorities with the highest amount of emissions from business travels for the year of 2017. It is especially important for the Linnaeus University which has an environmental management certificate and has a Meeting-and Travel policy to reduce their emissions. The purpose of this study was to find out the factors which affect the choice of transport on business trips for university employees as well as what is required for the target group to choose the more environmentally friendly alternatives. The method that was used was a web survey in combination with a conjoint analysis to get both quantitative and qualitative results. The results from the study showed that the deciding factors for the respondents were time, cost, environment, reliability and impact on leisure time. The occupational group which was most represented by the respondents was Technical- and Administrative personnel whose purpose with the business trip mainly was meetings and conferences. That which the respondents deemed as required for them to choose train over plane was the possibility for flex during the travel time, for overnight stays to be granted by the university as well as improved public transport.