PROJEKT CENTRALNOG GRIJANJA STANA

U ovome radu sadržan je proračun i izbor opreme za grijanje stambenog objekta koji je predviđen u Crikvenici. Stambeni objekt sastoji se od prizemlja i kata ukupne površine 175,4 m2 , za koji je bilo potrebno odrediti slojeve zidova, podova i krova, te izračunati koeficijente prolaza topline kroz se slojeve. Energetski razred zgrade je C, koji je određen na temelju proračuna referentnih vrijednosti. U Crikvenici nema jakih zima što je relativno dobro, no ako bi se htjelo smanjiti toplinske gubitke, odnosno povećati energetski razred zgrade, potrebno je stambeni objekt dodatno izolirati, što dodatno povećava troškove izgradnje. Temeljem izračunatih ukupnih toplinskih gubitaka za centralno grijanje stana odabrana je peć na pelete snage 19 kW. Peć je cijevnom mrežom preko razdjelnika spojena na ogrjevna tijela, pomoću ekspanzijske posude, cirkulacijske pumpe, spremnika potrošne tople vode i raznih ventila. Ogrjevna tijela su člankasti radijatori smješteni u svim prostorijama u kojima se boravi, dok su u kupaonama smješteni kupaonski radijatori. Na temelju proračuna odabrana je ekspanzijska posuda koja služi kako bi se održao tlak ogrjevnog medija unutar propisanih granica, te za korekciju gubitaka vode. Temeljem proračuna je također odabrana cirkulacijska pumpa koja služi kako bi se dovodila topla voda u određeni prostor pod tlakom u zatvorenom cirkulacijskom sustavu i spremnik potrošne tople vode koji zagrijava pitku vodu koja služi ukućanima za korištenje.This work contains the calculation and a list of chosen heating equipment designed for a residential building in Crikvenica. The residential building is made of a ground floor and a first floor and its total size is 175,4 square meters. Wall, ground and roof layers needed to be designed, as well as the rate of thermal transmittance calculated. C is the mark of the energetic efficiency of the residential building. It has been calculated on the basis of estimations of benchmarks. There are no extremely cold winters in Crikvenica and that is an extenuating circumstance. However, in order to reduce thermal losses i.e. increase the level of energetic efficiency, the residential building needs to be additionally isolated and that increases building costs. According to the calculations of the total thermal losses, the chosen central heating system is a pellet stove, power of 19 kW. The stove is connected to the heating bodies by the conduit and crossbars, expansion tank, circulator pump, consumable hot water tank and various faucets. The heating bodies are sectional radiators that are placed in the rooms of the residential building, as well as bathroom radiators placed in the bathrooms. The expansion tank is chosen bearing in mind the calculations and its main purpose is to maintain the pressure of the heating medium, as well as to control water loss. The circulator pump was also chosen due to the calculations and its purpose is to lead hot water to a certain place in a closed circulator system. The same rationale was used to choose the consumable hot water tank which serves to heat up drinkable water that members of the household use