The master’s thesis deals with the design of solar assisted space heating and domestic hot water (DHW) heating in a detached single family dwelling. The thesis contains the heating load calculations as well as the calculation of the energy consumption for space and DHW heating. The thesis also contains the actual design and sizing of the heating system including the drawings. A simulation of solar heating was carried out with the use of the TRNSYS simulation tool in order to assess the yield of the solar heating system.

The aim is to design an evaluate options for heating sytem for kindergarden with two floors. The project documention, investment cost and operating cost are included in this project.

This thesis deals with the computational comparison of the energy performance of buildings of various construction materials. The work aims at assessing the building as a thermal system. The theoretical part describes the methods for calculating the energy performance of buildings. The experimental part of the work focuses on quantifying the heat consumption of specific buildings in terms of thermal stability and it is later compared with the results calculated in accordance with the applicable technical standards.

Increasing demands for low heat losses and energy intensity of a building influence energy calculations. Higher demands are placed on the accuracy of the calculations. An important part of the thermal engineering calculations is the determination of the correct boundary conditions. An important input factor is primarily the indoor and outdoor environment, and temperature is the most important parameter for these types of enviromnent. It is not always the temperature of the external environment, but the environment that is adjacent to the soil or to unheated or differently heated spaces. The possibilities of modeling temperatures below the object are described in the standard ČSN EN ISO 10211. This standard specifies details for a geometric model for the numerical calculation of heat flows to assess the total heat loss of buildings or parts thereof, as well as to derive linear and point heat transfer factors. Furthermore, to calculate minimum surface temperatures to assess the risk of surface condensation and to determine the surface temperature factors. These are two different computational models. Therefore, it would be appropriate to simplify these calculations by simplifying the boundary conditions, namely to conduct an isotherm at a certain level below the terrain, which will be considered as a boundary condition, which is also based on long-term experience with "frost-free" depth. This calculation would be unambiguous, clear and simple.

The thesis is focused on the economic comparison of heating sources for a particular object in terms of annual operating costs, initial investment costs, payback period, savings over the life of the investment resources and subjective comparisons. At the same time broaden their horizons in terms of obtaining information on technical innovations in the world of heating and an overview of the prices heating and energy sources.