The thesis deals with the design of a grate steam boiler which has natural circulation and is determined for combustion of wood chips. The boiler has a capacity of 45 t/h and produces superheated steam with the output parameters of 3,5 MPa and 450 °C at the 125 °C feed water temperature. Stoichiometric calculations and the flue gases enthalpy calculations are based on the composition of the specified fuel. The efficiency and fuel consumption of the boiler is also determined. The thesis mainly focuses on the thermal calculation and geometric design of the individual heat transfer surfaces of the boiler. The drawing documentation of the steam boiler is available in the attachment of the thesis.

The diploma thesis is dedicated to the countess and philanthropist S. V. Panina. It focuses mainly on her life and philanthropic activities. The first chapter contains the biography of S. V. Panina. The second chapter is devoted to the philanthropic activities of countess. The first part of this chapter elaborates on her project, which was implemented in pre-revolutionary St. Petersburg, namely the Ligovsky people's house. The second subchapter is devoted to the activities of S. V. Panina in Czechoslovakia. First, the operation and financing of the Russian people's house, called Russian Fireplace, is elaborated here. Subsequently, this part deals with the activities of S. V. Panina in the Executive Committee for the Organization of the Russian Culture Days in Czechoslovakia. The third subchapter focuses on the countess' charitable activities in the United States, where she left from Czechoslovakia. The last fourth part of the chapter is devoted to the countess' individual charitable activities.

The diploma thesis deals with design of warm air heating and ventilating system for low energy house. Introduction of this thesis is focused on dividing residential buildings by their heat requirement. Then problems of residential building ventilation and possibilities of warm air heating systems including heat recovery are presented. In the next chapter summary of ventilating units with heat recovery and warm air heating units for residential low energy buildings and pasive family houses is presented. Calculation of low energy house heat losses, which is solved, is based on CSN 06 0210, CSN 73 0540 and CSN EN 12831 standards. Design and calculation of warm air heating and ventilation system and ground heat exchangers is also described. Floor heating system, fireplace insert and solar heating system are designed as supplementary systems. At the end of this thesis the control system is presented. Project documentation is enclosed in appendix.