RES Based Heating and DHW System for a Single-Family House

U ovom radu opisan je proces odabira termotehničkog sustava za grijanje i pripremu potrošne tople vode na razini glavnog strojarskog projekta. S obzirom na lokaciju objekta odabrana je projektna temperatura, a pomoću toga sam odredio toplinske gubitke cijele kuće. S obzirom na to i potreban učin za zagrijavanje PTV-a, odabrao sam generator topline koji zadovoljava sve potrebe grijanja. Kako postoji mnogo mogućih kombinacija sustava grijanja, proveo sam tehnoekonomsku analizu investicijskih troškova, troškova održavanja i troškova potrošnje energije. Pomoću te analize, koja je rađena na rok isplativosti od 15 godina, ustanovljeno je kako je najisplativija kombinacija ona s kotlom na biomasu te radijatorima kao ogrjevnim tijelom. U daljnjem tijeku rada sam odabrao sve sastavne dijelove sustava grijanja koji su prilagođeni ovom objektu. Uzevši sve parametre u obzir, ovo rješenje grijanja i pripreme potrošne tople vode trebalo bi zadovoljiti sve uključene sudionike i pružiti im ugodnost u prostoru za što je i namijenjen ovakav sustav.This paper describes the process of selecting a thermotechnical system for heating and the preparation of the domestic hot water at the level of the main mechanical design. Given the location of the building and the projected outside temperature for which is the system designed, I determined the heat losses of the whole building. Given this and the required output for the DHW heating, I have chosen a heat generator that meets all the heating needs. As there are many possible combinations of heating systems, I conducted a techno-economic analysis of the investment costs, maintenance costs and the energy consumption costs. Using this analysis, which was done for a payback period of 15 years, I found out that the most cost-effective combination is with a biomass boiler and radiators. In the further course of work I selected all required components of the heating system that are studies for this facility. Taking into account all the parameters, this solution for heating and preparation of the domestic hot water should satisfy all involved participants and provide them with comfort in the space for which this system is intended