This diploma thesis deals with analysis of particular elements of ground water storage tanks, their comparison and describtion of their characteristic. Basic information of designing volume of accumulation tank is included in the first part followed by a key section where particular construction parts and elements are described. In the next section, new types of water tanks are mentioned. In the final section of this thesis, study of 5 existing water tanks was accomplished. A technical recommendation is summed up in the final part that can be taken into account when constructing a new water storage tank.

This master`s thesis deals with low-temperature heating that employs a heat pump. The introduction gives reasons for utilization of the renewable heat sources for heating. The next part focuses on a practical application of renewables on the heating of a family house. It covers a detailed description of the building and the designed heating system which includes: the calculation of thermal losses, design of the low-temperature boiler, heat pump, safety devices, heating elements, sizing and control of the system. The last part is devoted to the assessment of the system performance.

I takt med stigande oljepriser har ett av Sveriges största odlingsföretag Svegro bestämt sig för att byta ut sitt nuvarande värmesystem. Svegro består idag av växthus på ca 50 000 m2 på Thorslunda gård, Färingsö. Uppvärmningen sker idag med hjälp av oljeeldning samt den värmeenergi som omvandlas från växthuslampor. Det nya värmesystemet kommer att använda sig av ett annat förbränningsalternativ än mineralolja. Detta kommer göra det möjligt för Svegro att sänka sina energikostnader och minska miljöpåverkan genom reducerat koldioxidutsläpp. Kraven som ställs är att det nya värmesystemet ska kunna integreras med det befintliga värmesystemet och samtidigt leva upp till dagens ekologiska krav. Målet med bytet av värmesystem är att sänka energiförsörjningskostnaderna men också att klara av framtida högre ställda krav och miljömålsättningar. För att avgränsa rapporten har tre olika förbränningsalternativ behandlats där alla passar bra med den nuvarande vattenburna värmelösningen. Alternativen består av bioolja, pellets och flis. För att bestämma det bästa alternativet har en jämförelsestudie mellan de olika bränslena gjorts där faktorer som investeringskostnader, miljöpåverkan och bränsleeffektivitet beaktats. Utifrån analyserna av resultaten i rapporten föreslås pellets som det bäst lämpade systemet för Svegros anläggning. Enligt livskostnadsanalysen i rapporten kommer det nya systemet att ha betalat av sig efter 1,5 år och efter det kommer besparingar på ca 5,5 miljoner kr göras per år jämfört med om det befintliga systemet skulle bevaras. Det nya bränslet kommer utöver ekonomiska besparingar även minska CO2-utsläppen med ca 2300 ton per år. Konsekvenserna av att välja pellets som förbränningsalternativ är att man måste kombinera pelletsförbränningen med en biooljeuppvärmning, detta för att växterna ska klara av att överleva extremt kalla vinterdagarna. / While the oil price continues to increase, one of Sweden’s largest indoor growing companies Svegro has decided to replace their existing heating system. Svegro is a large green house with an area of approximately 50 000 m2 and is located at Thorslunda gård, Färingsö.The heating system today uses mineral oil and the heat from assimilation lamps. The new system will be using an alternative combustion fuel to the expensive mineral oil. This will make it possible for Svegro to lower their energy costs and reduce their environmental effect by lowering the emissions of carbon oxide.The requirements are that the new heating system should be able to be integrated with the already existing system and at the same time live up to today´s ecological requirements. The goal of replacing the heating system is to reduce the energy costs but also to manage future demands and environmental ambitions. In order to define some limitations for the reports we have chosen three different combustion options where all alternatives fit with the present heating distribution. The combustion options are biological oil, wood pellets and wood chips. To determine the best option a comparison between the different fuels has been done considering factors such as investment costs, environmental impact and fuel efficiency.Based on the analyzed results we suggest that wood pellets will be the most suitable fuel for Svegros facility and heating system. According to the lifecycle cost the new system will have paid off itself after 1,5 years. The savings made each year from changing fuel will be approximately 5,5 million SEK per year compared if the oil still was used. The new fuel will in addition to the financial savings also reduce the carbon dioxide emissions by 2300 tons per year.The consequence of choosing wood pellets as combustion fuel is that you have to combine the pellet burning with biofuel combustion. The combination will make it possible for the plants to survive extremely cold weather conditions during the winter.

This diploma thesis is about using heat pump (HP) to gain energy. The theoretical part contains introduction, historical development of HP, principle of function, description of individual components, working cycle of heat pump and sources of lowpotencial energy and accordingly possible types of heat pumps. The practical part is devoted to proposal of appropriate type of heat pump for heating and warming of tap water for family house and economical evaluation of this solution.

This diploma thesis is devoted to a rainwater management in commercial and administrative buildings. The goal of this work is to describe rainwater management system with a focus on its later usage. The work is divided into theoretical and practical parts. The first part examines the binding conditions, as well as the individual technologies and devices that must be included in the implementation of a rainwater management system. The practical part of the work is an analysis of the possibility of using rainwater for the needs of the fire brigade in Havlíčkův Brod. The result of this work is a calculation of the approximate payback period of the proposed system.

The subject of the diploma thesis is accumulation tanks in heating systems. The first part introduces the topic of thermal energy storage and types of accumulation tanks. The second part describes two specific options of heating the building of the boarding house and the restaurant with the use of storage tanks in the heating system. A gas condensing boiler is designed as a heat source in one variant and a pellet boiler in the other variant. The third part deals with experimental measurements, in which the accumulation tank with the installation for better stratification of hot water and the accumulation tank without the installation are compared.