| Abstract [eng] |
This final master‘s thesis is based on comparison among different systems of domestic hot water preparation. Hot water systems are designed for a building which has few functions: public -, swimming pool -, and offices parts. This object is three-stories building which a basement where technical rooms are located. The volume of the swimming pool is 675 m³. The part of the literature review is based on analysis of scientific papers and articles. Four different systems of domestic hot water are selected for analysis: solar panels combined with an electrical heater, ground – water heat pump, an electrical heater, and a gas boiler. Systems are compared in respect with set criteria for price of a system, effectiveness, durability and payback period. Using a method of proximity to the ideal point it is found out that the most effective and economically efficient system is solar panels combined with an electrical heater. This is a reason why this system is selected for the project of hot water preparation for a swimming pool. Since sawage heat exchangers enable to save up to 20 % of heat energy, they are designed in order to prepare domestic hot water. Water which is heated by sawage heat exchangers is storaged in an accumulation tank. A gas boiler is designed to heat water up to required temperature. In order to prevent water supply systems from connections in the floor layer and them hermetic, the safe water supply systems are designed – “pipe in pipe“. All the pipes suppose to be mounted into a floor layer. The sawage system is designed. It is formed out of six stoves where a sewage heat exchanger is designed on each stove. Wastewater is collected and driven to the district sewage system. |
