The aim of this Diploma thesis is calculating the parameters of the heat balance diagram as well as creating balance sheet for winter and summer operation. In one of the first parts, the reader is acquainted with two P&I diagrams containing main accessories, which are also used in the heat scheme, KKS marking system is used to name the acces-sories. The main part of the thesis consists of a detailed calculation of the heat transfer surface of the condenser with design of the tube bundle including the main dimensions of the condenser. Last but not least, the calculations of the hydraulic losses of condenser are included in the thesis.

Socialsekreterare är en utsatt yrkesgrupp med ansträngd arbetssituation. Inom kommunerna arbetar även inhyrd personal, socionomkonsulter. Studien syftade till att undersöka skillnaderna i den psykosociala arbetsmiljön mellan socialsekreterare och socionomkonsulter avseende socialt stöd mellan kollegor och chef, uppmuntrande ledarskap och socialt klimat. Det gjordes en webbenkät, utifrån QPS Nordic 34+, där 26 Socialsekreterare och 11 Socionomkonsulter svarade (n=37). På grund av få deltagare har några generella slutsatser inte varit möjliga. Dock visade studien vissa skillnader mellan gruppernas skattningar gällande stöd från kollega och chef samt socialt klimat. Detta är i linje med tidigare forskning som visar att inhyrd personal har färre sociala kontakter än fast anställda. Socialsekreterarna skattade högre än referensdata avseende socialt stöd. Flera andra faktorer påverkar dock den psykosociala arbetsmiljön och vidare studier behövs. / Social workers are an exposed profession due to strained working situation. The municipalities also use temporary agency workers in social authority work. The purpose of the study was to investigate the differences in the psychosocial work environment between regular social workers and agency social workers regarding social support between colleagues and managers, encouraging leadership and social climate. A web survey, QPS Nordic 34+ was done. 26 regular social workers and 11 agency social workers participated (n=37). Since it was few participants it has not been able to make any general conclusions. Significant differences were found for support from colleague and manager and social climate. Regular social workers estimated higher than reference data on the variables included in social support. Several other variables than social support affects the psychosocial work environment and further studies are needed.

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