Utjecaj dodavanja otpadnog jestivog ulja u dizelsko gorivo na karakteristike motora i emisiju ispušnih plinova

master's thesis

• Title (english): The impact of the addition of waste cooking oil in diesel fuel on engine characteristics and emission of exhaust gases
• Author: Kristian Čelina
• Mentor: Krešimir Čopec (mentor)
• Committee member: Krešimir Čopec (predsjednik povjerenstva)
• Committee member: Dubravko Filipović (član povjerenstva)
• Committee member: Vanja Jurišić (član povjerenstva)
• Committee member: Zlatko Koronc (član povjerenstva)
• Granter: University of Zagreb; Faculty of Agriculture; (Mechanization and Autonomous Systems in Agriculture); Zagreb
• Defense date and country: 2019-09-25, Croatia
• Scientific / art field, discipline and subdiscipline: BIOTECHNICAL SCIENCES; Agronomy

Abstract

Otpadno jestivo ulje donedavno je predstavljalo ekološki problem zbog nerazvijenog sustava zbrinjavanja i recikliranja. U 2017. godini je pokrenut projekt prikupljanja otpadnog jestivog ulja iz domaćinstava u Republici Hrvatskoj dok ugostitelji već duže vrijeme imaju zakonsku obvezu sigurnog zbrinjavanja otpadnog ulja. Iako otpadna jestiva ulja spadaju u biorazgradivi otpad, mogu uzrokovati onečišćenje i zagađenje okoliša ukoliko se nepravilno zbrinjavaju. Otpadna jestiva ulja koja nastaju u procesu obrade hrane koristan su otpad koji može biti korišten kao sekundarna sirovina za izradu novih proizvoda poput boja, lakova, kozmetike te biodizelskog goriva. Većina postupaka recikliranja takve vrste sekundarne sirovine je prilično skupa s obzirom na vrijednost krajnjeg produkta. Najjeftiniji način iskorištavanja otpadnog jestivog ulja je umješavanjem u dizelsko gorivo. U ovom diplomskom radu, cilj je utvrditi utjecaj umješavanja otpadnog jestivog ulja u dizelsko gorivo na karakteristike motora (snagu, zakretni moment i potrošnju goriva) i emisiju ispušnih plinova. Istraživanje je provedeno korištenjem različitih mješavina dizelskog goriva i otpadnog jestivog ulja pri čemu je udio otpadnog jestivog ulja iznosio 10%, 20% odnosno 30%. Na osnovi dobivenih rezultata može se zaključiti da je moguće umješavati otpadno jestivo ulje eurodizel gorivu za korištenje u traktorskom dizel motoru. Rezultati pokazuju da je mješavina s 30% udjela otpadnog jestivog ulja ostvarila rezultate usporedive sa standardnim eurodizel gorivom. Razlike u karakteristikama motora pri korištenju eurodizel goriva i B30 mješavine su zanemarive. Korištenjem B30 mješavine ostvarena je veća prosječna snaga za 0,37% te veći zakretni moment za 0,15% u odnosu na eurodizel gorivo. Emisije štetnih ispušnih plinova CO, CO2 i NOx su približno jednake dok je emisija HC prosječno niža za 29,45% kod B30 mješavine u usporedbi s eurodizelom.

Abstract (english)

Waste cooking oil was until recently, an ecological problem due to the underdeveloped recycling system. In 2017, a project of collecting waste cooking oils from households in the Republic of Croatia was launched, while caterers have a legal obligation to secure the disposal of waste oil. Although waste cooking oils are clasified as biodegradable waste, they can cause pollution if they are improperly handled. Waste cooking oils, obtained after food processing, can be used as raw material for the production of new products such as paints, varnishes, cosmetics and bio diesel. Most of the recycling procedures for this type of secondary raw material are quite expensive given the value of the end product. The cheapest way to use waste cooking oil is by adding it to the diesel fuel. The objective of this paper is to determine the impact of blending waste cooking oil with diesel fuel on the engine characteristics (power, torque and fuel consumption), as well as emission of exhaust gases. The research was carried out using various blends of diesel fuel and waste cooking oil with a share of waste cooking oil of 10%, 20% and 30%. On the basis of the obtained results it can be concluded that it is possible to blend waste cooking oil with diesel fuel for use in a tractor diesel engine. The results show that a 30% blend of waste cooking oil achieved the results comparable to the standard eurodiesel fuel. Differences in engine characteristics when using eurodiesel and B30 mixtures are minimal. The use of the B30 blend resulted in a higher average power and a 0,15% higher torque compared to eurodiesel fuel. Emissions of harmful exhaust gases CO, CO2 and NOx are approximately equal, while HC emission is in average lower by 29,45% for the B30 mixture compared with eurodiesel.

• Keywords: otpadno jestivo ulje; karakteristike motora; dizel; ispušni plinovi
• Keywords (english): waste cooking oil; engine characteristics; diesel; exhaust gases
• Language: croatian
• URN:NBN: urn:nbn:hr:204:728345
• Study programme: Title: Agricultural Engineering; Study programme type: university; Study level: graduate; Academic / professional title: magistar/ magistra inženjer/inženjerka poljoprivredne tehnike (magistar/ magistra inženjer/inženjerka poljoprivredne tehnike)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2019-11-25 12:40:28