Proračun dizalice topline u ventilacijskim jedinicama

master's thesis

• Title (english): Heat pump calculation in air handling units
• Author: Ivan Mikić
• Mentor: Vladimir Soldo (mentor)
• Granter: University of Zagreb; Faculty of Mechanical Engineering and Naval Architecture; Zagreb
• Defense date and country: 2021-07-16, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Mechanical Engineering; Process Energy Engineering

Abstract

Trenutna nastojanja za poboljšanjem ekološke situacije u svijetu dovode do donošenja zakona i uredbi kojima se povećava energetska učinkovitost i smanjuje ispuštanje stakleničkih plinova u atmosferu. Uredba Europske unije 517/2014 donosi ograničenja u iznosima potencijala globalnog zagrijavanja, GWP-a, radnih tvari kod uređaja rashladne tehnike i dizalica toplina. Na zahtjev tvrtke Pro-klima d.o.o. napravljena je analiza trenutnih tehnologija te potencijalnih zamjena za radnu tvar R410A u sustavima klimatizacije, točnije ventilacijske jedinice s integriranom dizalicom topline zrak-zrak čiji je toplinski izvor otpadna toplina iz kondicioniranog prostora. Napravljen je proračun za projektne i izmjerene uvjete s alternativnim radnim tvarima niskog GWP-a i odgovarajućih sigurnosnih svojstava. Zaključeno je da za promatrane uređaje trenutno ne postoji konkretna zabrana iznosa GWP-a te iz tog razloga nije ni razvijeno tržište novih radnih tvari niskog GWP-a i njihovih komponenti. Dani su prijedlozi za zamjenu R410A, ali dok ne budu izdane konkretnije zabrane nastavit će se korištenje R410A.

Abstract (english)

World industry is constantly improving its ecological imprint which led to many regulations and laws that improve energy efficiency and lower greenhouse gasses emissions. Regulation No 517/2014 of European Union prohibits use of high global warming potential, GWP, refrigerants in certain refrigeration and heat pump systems. On behalf of Pro-klima d.o.o. analysis of current technologies and potential replacements for R410A refrigerant in air conditioning systems is made, specifically an air handling unit with integrated air to air heat pump that uses waste heat extracted from conditioned space as heat source. Calculation is made with alternative low GWP and appropriate safety features refrigerants in design conditions and measured operating point. It is concluded that specific GWP limitations for analysed systems do not exist. Consequently, new low GWP refrigerants market and corresponding components market is not developed. Suggestions for R410A replacements are given, but until more specific prohibitions are in force, use of R410A will be continued.

• Keywords: Uredba EU 517/2014; ventilacijska jedinica s integriranom dizalicom topline; potencijalne radne tvari u ventilacijskim jedinicama; mjerenja parametara dizalice topline i ventilacijske jedinice
• Keywords (english): Regulation No 517/2014 of European Union; air handling unit with integrated heat pump; potential refrigerants in air handling units; measurements of heat pump and air handling unit parameters
• Language: croatian
• URN:NBN: urn:nbn:hr:235:221175
• Study programme: Title: Mechanical Engineering; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra inženjer/inženjerka strojarstva (magistar/magistra inženjer/inženjerka strojarstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access; Embargo expiration date: 2023-07-15
• Created on: 2021-07-15 13:07:02