Energetski pregled industrijskega obrata in optimizacija rabe električne energije

Zaplotnik, Matej (author), Senegačnik, Andrej (mentor)

Energetski pregled predstavlja ključen vpogled v obstoječ profil rabe energije v industrijskem obratu in vključuje prepoznavo in ovrednotenje stroškovno učinkovitih možnosti za prihranke in poročanje o ugotovitvah. V tem delu je predstavljen splošen energetski pregled industrijskega obrata, katerega nadaljnja usmeritev je osredotočena predvsem na rabo električne energije, ki je leta 2019 znašala 12.400 MWh in s tem povezane stroške. Z namenom znižanja stroškov sta bila predlagana dva ukrepa: fotonapetostna elektrarna in baterijski hranilnik, ki sta bila tudi ekonomsko ovrednotena. Ugotovljeno je, da je smiselno zniževati obračunsko moč v času ur konične obremenitve, prav tako pa je upravičena postavitev fotonapetostne elektrarne moči 813 kW. Inštalacija baterijskega hranilnika moči 1 MW in kapacitete 2 MWh, se je izkazala za neupravičeno, saj je življenjska doba baterij prekratka, samo vračilo investicije pa močno odvisno od nabavne cene električne energije.

• Language: Slovenian
• Keywords: energetski pregled, stroškovna analiza rabe električne energije, ekonomski model, obračunska moč, baterijski hranilnik, fotonapetostna elektrarna
• Work type: Master's thesis/paper
• Typology: 2.09 - Master's Thesis
• Organization: FS - Faculty of Mechanical Engineering
• Place of publishing: Ljubljana
• Publisher: [M. Zaplotnik]
• Year: 2021
• Number of pages: XXII, 60 str.
• PID: 20.500.12556/RUL-129795
• UDC: 621.311:620.9:621.383.51(043.2)
• COBISS.SI-ID: 78946819
• Publication date in RUL: 08.09.2021

Secondary language

• Language: English
• Title: Industrial energy audit and optimization of electricity use

Abstract

Energy audit represents a key insight into current energy use profile of an industrial plant and includes the identification and evaluation of cost-effective savings option and the reporting of findings. This paper presents a general energy audit of an industrial plant, the further direction of which is focused mainly on the use of electricity which in 2019 amounted to 12.400 MWh and its related costs. In order to reduce costs, economic models for a solar power plant and battery storage system were implemented. We found out that it makes sense to reduce electrical consumption during peak periods, and the installation of a solar power plant with a generating capacity of 813 kW is also justified. The installation of a battery storage system with a capacity of 1 MW and energy of 2 MWh proved to be unjustified, as the battery life is too short, and the return on investment itself strongly depends on the purchase price of electricity.

• Keywords: energy audit, cost analysis of electricity, economic model, time of use rate, battery storage system, solar power plant