Projekt dizalice topline voda - voda za grijanje i hlađenje znanstveno - obrazovne ustanove

undergraduate thesis

• Title (english): Water-to-water heat pump project for heating and cooling of scientific and educational institution
• Author: Ivo Miljević
• Mentor: Vladimir Soldo (mentor)
• Granter: University of Zagreb; Faculty of Mechanical Engineering and Naval Architecture; Zagreb
• Defense date and country: 2025-02-06, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Mechanical Engineering

Abstract

Rad se zasniva na stvarnom projektu za objekt u Zagrebu. Za potrebe grijanja i hlađenja znanstveno-obrazovne ustanove korisne površine 10400 m2 projektiran je energetski učinkovit sustav s dizalicom topline podzemna voda-voda. Toplinski izvor/ ponor je voda iz podzemnog bunara. Predviđen je temperaturni režim 45/40 °C za grijanje, te 7/12 °C za hlađenje, a u prijelaznom periodu prostori se hlade pasivno podzemnom vodom. U radu je dan pregled projektnog toplinskog opterećenja prema HRN EN 12831 i projektnog rashladnog opterećenja prema VDI 2078. Proračunata je godišnja potrebna energija za grijanje i godišnja potrebna energija za hlađenje prema HRN EN 13790. Prikazana je shema predviđenog sustava te je napravljen proračun i izbor komponenti koje uključuju protočne crpke, međuizmjenjivač, isparivač i kondenzator dizalice topline i akumulacijski spremnik. Završno je opisana mogućnost pasivnog hlađenja, regulacija sustava, te su dani zaključci i prijedlozi daljnjih razmatranja.

Abstract (english)

The thesis is based on a real project for building in Zagreb. An energy efficient heating and cooling system with groundwater to water heat pump has been designed for the purpose of heating and cooling a scientific and educational institution with a net usable area of 10400 m2. The heat source/sink is water from an underground well. A temperature regime of 45/40 °C is designated for heating and 7/12 °C for cooling, while during transitional periods, the spaces are passively cooled using groundwater. The paper provides an overview of the design heating load according to HRN EN 12831 and the design cooling load according to VDI 2078. The annual energy demand for heating and cooling is calculated according to HRN EN 13790. A schematic of the proposed system is presented, accompanied by calculations and component selection, including flow pumps, a heat exchanger, the evaporator and condenser of the heat pump, and a buffer tank. Finally, the possibility of passive cooling and system regulation is described, along with conclusions and suggestions for future considerations.

• Keywords: proračun toplinskog i rashladnog opterećenja; dizalica topline podzemna voda – voda; dimenzioniranje komponenti sustava
• Keywords (english): heating and cooling load calculation; water to water heat pump; system component sizing
• Language: croatian
• URN:NBN: urn:nbn:hr:235:789067
• Study programme: Title: Mechanical Engineering; specializations in: Design, Process and Energy Engineering, Production Engineering, Engineering Modelling and Computer Simulation, Marine Engineering, Industrial Engineering and Management, Materials Engineering; Course: Production 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: Embargoed access; Embargo expiration date: 2027-02-06
• Created on: 2025-02-05 21:03:48