Simulation study of cascade heat pump for solar combisystems

This paper focuses on the study of cascade heat pump systems in combination with solar thermal for the production of hot water and space heating in single family houses with relatively high heating demand. The system concept was developed by Ratiotherm GmbH and simulated with TRNSYS 17. The basic cascade system uses the heat pump and solar collectors in parallel operation while a further development is the inclusion of an intermediate store that enables the possibility of serial/parallel operation and the use of low temperature solar heat. Parametric studies in terms of compressor size, refrigerant pair and size of intermediate heat exchanger were carried out for the optimization of the basic system. The system configurations were simulated for the complete year and compared to a reference of a solar thermal system combined with an air source heat pump. The results show ~13% savings in electricity use for all three cascade systems compared to the reference. However, the complexity of the systems is different and thus higher capital costs are expected.

Trycksaker till Utvecklingshuset och Skönhetsbanken

A number of publications has been produced for two companies in Dalarna, Utvecklingshuset andSkönhetsbanken.Utvecklingshuset is working, among other things, with stressyndroms and by treating crises. Theirpublications consist of a number of product sheets, a folder and a brochure. They want to use the publicationsfor information to their customers.Skönhetsbanken is a beauty saloon who will have a brochure to mediate the services they can offer.Photos have been taken, existing and for this purpose written texts have been used.The softwares Adobe Photoshop 7.0 and Adobe Indesign 2.0 have been used for all publications andthe work with producing these has been satisfactory.The effect of a good cooperation with the companies has resulted in that they are pleased with thepublications and feel that they have been part of the end of the results.All of the publications have been or will be printed with digital printing methods, which is the reasonfor the choice of the litterature survey.The survey deals with, among other things, how the digital press works, which papers that are suitable,economic aspects and what a graphic designer should have in mind when it comes to graphic productsthat will be printed with digital printing methods.

Grafisk profilering som en del avvarumärkesarbetet

A strong brand can help a company to be easier to recognize and be remembered by their customers. Part of branding is to create a visual appearance which is called a graphic profile and contains information on for instance a logo, colours or typography.The objective of this thesis was to create a graphic profile for Stjørdal Tannhelsesenter that could serve as a base for a brand work in the future. It was important to analyze how the clinic wants to be perceived and how it is perceived today. The methods used to carry out this study were questionnaires, researches and a focus group.The work resulted in the generation of a graphic profile that included a new logo, colours, decorative elements, fonts, templates for stationery, business card / badge, imagery, and examples of some publications.According to the test which was made to examine the results of the project showed that I was successful and that the new design meets all the requests from the previous questionnaires.