Projekt sustava grijanja i hlađenja obiteljske kuće s vanjskim bazenom

undergraduate thesis

• Title (english): Design of heating and cooling system for the single residence with outdoor swimming pool
• Author: Mateo Piljan
• Mentor: Igor Balen (mentor)
• Granter: University of Zagreb; Faculty of Mechanical Engineering and Naval Architecture; Zagreb
• Defense date and country: 2022-09-29, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Mechanical Engineering; Process Energy Engineering

Abstract

Tema završnog rada bila je projekt sustava grijanja i hlađenja obiteljske kuće s vanjskim bazenom. Prvo su izračunati projektni toplinski gubici prema normi HRN EN 12831 i projektni rashladni dobici prema smjernici VDI 2078. Nakon toga bilo je potrebno odabrati ogrjevna tijela, a u ovom radu odabrane su podne i zidne petlje. Zbrajanjem učina pojedinih petlji došlo se do ukupnog toplinskog i rashladnog učina uz pomoć kojeg je odabrana dizalica topline zrak-voda kapaciteta 9,02 kW koja za grijanje koristi temperaturni režim 35/30 °C, a za hlađenje temperaturni režim 16/19 °C. Kako bi poboljšali učinkovitost u radu dizalice topline odabran je međuspremnik topline. Nadalje, bilo je potrebno dimenzionirati cjevovode i na temelju izračuna pada tlaka odabrati pumpe za cirkulaciju vode u sustavu. Za pripremu potrošne tople vode kao izvor topline koriste se solarni paneli, koji samo djelomično mogu proizvesti potrebnu energiju za zagrijavanjem potrošne tople vode. U ljetnim mjesecima kolektori predaju i više nego što je potrebno energije sustavu pa se taj višak topline koristi za zagrijavanje bazenske vode. Ostatak godine kao potpora solarnom sustavu koristi se električni grijač uronjen u integrirani akumulacijski spremnik dizalice topline voumena 290 l.
Proračun toplinskih gubitaka je rađen u MS Excel-u i računalnom paketu IntegraCad, dok je proračun toplinskih dobitaka rađen samo u IntegraCad-u. Proračuni padova tlaka napravljeni su u MS Excel-u. Tlocrt suterena, prizemlja i 1. kata sa instaliranom opremom za grijanje i hlađenje i funkcionalna shema spajanja sustava izrađeni su u AutoCad-u.

Abstract (english)

The topic for this final work was design of heating and cooling system for the single residence with outdoor swimming pool. Firstly, the design heat load was calculated according to the official standard HRN EN 12831 and design cooling load according to the VDI 2078. For this purpose it was picked floor and wall pipe loops as heating elements. Total heating and cooling capacity were calculated by addition of each pipe loop, which is necessary to choose heat pump. Air to water heat pump was chosen with the temperature regime of 35°C/30 °C for heating and 16/19 °C for cooling. In order to improve heat pump efficiency, accumulation heat tank was installed. Additionally, it was needed to calculate pipe network to get pressure drop of the critical pipe loop and to choose adequate water pump. To prepare domestic hot water, solar panels were installed, but they can only partially contribute in heating of domestic hot water. During summer months, the excess heat is accumulated via solar panels, therefore, it is transferred to the pool water. The rest of the year, electric heater , immersed in the tank, is used as a ˝back- up˝ heater of the solar system, in order to satisfy energy requirements for domestic hot water heating.
Design heat load was calculated with MS Excel and computer package IntegraCad, while design cooling load was calculated only with IntegraCad. Pressure drop and pipe network calculations were made in MS Excel. Ground plan of basement, ground floor and first floor with installed equipment and functional scheme of the system were made in AutoCad.

• Keywords: toplinsko opterećenje; rashladno opterećenje; dizalica topline; solarni sustav; podno grijanje; zidno hlađenje
• Keywords (english): design heating load; design cooling load; heat pump; solar system; floor heating; wall cooling
• Language: croatian
• URN:NBN: urn:nbn:hr:235:598803
• Study programme: Title: Mechanical Engineering; Study programme type: university; Study level: undergraduate; Academic / professional title: sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka strojarstva (sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka strojarstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2022-09-28 10:57:46