Outdoor Swimming Pool Systems Design

Predmetni bazen nalazi se u sklopu obiteljske kuće smještene na području grada Poreča. Bazen je tlocrtne površine 58 m2 , dubine 1,35 m, odnosno volumena 78,3 m3 . Cilj glavnog projekta bazenske tehnike je predvidjeti sustav pripreme bazenske vode koji će zadovoljiti neophodne uvjete sukladno Pravilniku o sanitarno tehničkim i higijenskim uvjetima te zdravstvenoj ispravnosti bazenskih voda (NN107/12). Ovim je radom izvršen proračun i odabir opreme za potrebe filtracije, kemijskog tretmana, cirkulacije, grijanja bazenske vode te svih elementa potrebnih za nesmetani rad sustava. Za potrebe filtracije bazenske vode odabran je brzi zatvoreni tlačni pješčani filtar izrađen od poliestera ojačanog staklenim vlaknima, predviđeni za radni tlak do max. 2,5 bara. Opremljen je armaturom za ručno upravljanje radom – pranjem filtera. Filter omogućuje brzinu filtriranja od v=50 m/h za filtraciju bazenske vode. Za pranje filtera koristi se voda iz bazena. Za kontrolu kvalitete vode u bazenu, predviđena je ugradnja opreme za automatsko mjerenje i regulaciju količine slobodnog klora i pH vrijednost bazenske vode. Izmjerena vrijednost posljedično upravlja radom dozirnih pumpi za klornu otopinu, kao i kiselinu za snižavanje pH vrijednosti bazenske vode. Također, ovim je radom izveden proračun ukupnih toplinskih gubitaka i dobitaka bazenske vode temeljem kojih je odabrana oprema za grijanje iste. Toplinskom bilancom obuhvaćeni su toplinski gubici ishlapljivanjem, konvekcijom, zračenjem, transmisijom, gubici zbog dovođenja svježe vode i toplinski dobici apsorpcijiom. Energetsko ekonomskom analizom izvedena je usporedba korištenja sustava solarnih kolektora i dizalice topline. Temeljem analize, kao ekonomski opravdana investicija za potrebe grijanja bazena, odabran je sustav koji se sastoji od dizalice topline, te dodatnog električnog grijača za potrebe vršnih opterećenja. Iako je Sunčeva energija prirodan, obnovljiv i besplatan izvor energije, visoki troškovi početne investicije često su razlog njenog nekorištenja.The pool in question is located within a family house located in the city of Porec. The pool has a floor area of 58 m2 , a depth of 1.35 m and a volume of 78.3 m3 . The aim of the main project of pool technology is to envisage a pool water preparation system that will meet the necessary conditions in accordance with the Ordinance on sanitary and hygienic conditions and the health safety of pool water (NN107 / 12) (Pravilnik o sanitarno tehničkim i higijenskim uvjetima te zdravstvenoj ispravnosti bazenskih voda (NN107/12)). This project includes the calculation and selection of equipment for the needs of filtration, chemical treatment, circulation, pool water heating and all the elements necessary for the smooth operation of the system. For the purposes of pool water filtration, a fast closed pressure sand filter made of glass-fiberreinforced polyester, designed for operating pressures up to max. 2.5 bar. It is equipped with fittings for manual operation - filter washing. The filter allows a filtration speed of v = 50 m / h for pool water filtration. Pool water is used to wash the filter. For the needs of pool water quality control, the installation of equipment for automatic measurement and regulation of the amount of free chlorine and the pH value of pool water is planned. The measured value consequently controls the operation of the dosing pumps for the chlorine solution, as well as the acid for lowering the pH value of the pool water. Also, with this work, the calculation of the total heat losses and gains of pool water was performed, on the basis of which the heating equipment was selected. Heat balance includes heat losses by evaporation, convection, radiation, transmission, losses due to fresh water supply and heat gains by absorption. Energy and economic analysis compared the use of solar collector systems and heat pumps. Based on the analysis, a system consisting of a heat pump and an additional electric heater for peak loads was selected as an economically justified investment for the needs of pool heating. Although solar energy is a natural, renewable and free source of energy, the high costs of the initial investment are often the reason for not using it