Päikeseküttesüsteemi tööparameetreid mõõtev süsteem mikroarvuti baasil
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Kuupäev
2018
Kättesaadav alates
Autorid
Ajakirja pealkiri
Ajakirja ISSN
Köite pealkiri
Kirjastaja
Eesti Maaülikool
Abstrakt
Eesti Maaülikool omab alates 2008. aastast päikeseküttesüsteemi
TiSUN SWS 2,5W/BE200. Mainitud päikeseküttesüsteemi tööparameetreid on mõõdetud
alates aastast 2009 kuni praeguseni. Aja möödudes on mitmed kasutatavad andurid
töötamise lõpetanud ning mõõtesüsteem on hakanud amortiseeruma.
Käesoleva magistritöö eesmärgiks oli koostada mikroarvuti baasil paneelile langeva
päikesekiirguse ja päikeseenergiat muundava ja koguva süsteemi tööparameetreid
mõõtev, registreeriv ning kuvav süsteem.
Mõõtesüsteem baseerub mikroarvutil Raspberry Pi 2 mudel B V1.1-l. Püranomeetrite
väljundsignaalide lugemise võimekuseks kasutati Raspberry Pi laiendusplaati
Waveshare AD/DA Board-i. Töö tulemusena valmis mõõtesüsteem, mis mõõdab 14
erinevat temperatuuriväärtust, kolme kiiritustiheduse (kaks horisontaalses asendis ning
üks päikesekollektori asendis) väärtust ning akumulatsioonipaagist väljuva vee hulka.
Kiiritustiheduse mõõtmisi võrreldi Eesti Maaülikooli tehnikamaja katusel asuva
ilmajaama ning Tartu Ülikooli füüsikahoone katusel asuva ilmajaama
mõõtmistulemusega. Temperatuuride mõõtmistulemusi võrreldi hetkel kasutuses olevate
päikeseküttesüsteemi tööparameetreid mõõtvate süsteemide mõõtmistulemustega.
Mõõtmistulemuste võrdlemisel järeldati, et mõõtmissüsteemi loomine mikroarvuti baasil
õnnestus. Loodud mõõtmissüsteemi abil on võimalik põhjalikumalt uurida
päikeseküttesüsteemi toimimist ning hinnata päikeseküttesüsteemi efektiivsust.
Estonian University of Life Sciences has been using the TiSUN SWS 2.5W / BE200 solar heating system since 2008. The operating parameters of the solar heating system have been measured since 2009. As time has gone by, many of the used sensors have stopped working and the measurement system has started to depreciate. The aim of this Master's thesis was to create a measurement, recording and display system for the operation parameters of a solar heating system based on a microcomputer. The measuring system was based on the Raspberry Pi 2 Model B V1.1 microcomputer. The ability to read the pyranometer output signals was based on the Waveshare AD/DA Board. The result is a measuring system that measures 14 different temperature values, three values of irradiance (two in the horizontal position and one in the position of the solar collector) and the amount of water leaving the accumulation tank. The measurements of irradiance were compared with the measurement results of the weather stations located on the roofs of the Estonian University of Life Sciences Technological Center and the University of Tartu physics building. The temperature measurement results were compared to the measurement results of systems measuring the operational parameters of the solar heating system. When comparing the measurement results, it was concluded that the creation of a measurement system based on a microcomputer was successful. Created measurement system allows us to study the functioning of the solar heating system in more detail and evaluate the efficiency of the solar heating system.
Estonian University of Life Sciences has been using the TiSUN SWS 2.5W / BE200 solar heating system since 2008. The operating parameters of the solar heating system have been measured since 2009. As time has gone by, many of the used sensors have stopped working and the measurement system has started to depreciate. The aim of this Master's thesis was to create a measurement, recording and display system for the operation parameters of a solar heating system based on a microcomputer. The measuring system was based on the Raspberry Pi 2 Model B V1.1 microcomputer. The ability to read the pyranometer output signals was based on the Waveshare AD/DA Board. The result is a measuring system that measures 14 different temperature values, three values of irradiance (two in the horizontal position and one in the position of the solar collector) and the amount of water leaving the accumulation tank. The measurements of irradiance were compared with the measurement results of the weather stations located on the roofs of the Estonian University of Life Sciences Technological Center and the University of Tartu physics building. The temperature measurement results were compared to the measurement results of systems measuring the operational parameters of the solar heating system. When comparing the measurement results, it was concluded that the creation of a measurement system based on a microcomputer was successful. Created measurement system allows us to study the functioning of the solar heating system in more detail and evaluate the efficiency of the solar heating system.
Kirjeldus
Magistritöö
Energiakasutuse õppekaval
Märksõnad
magistritööd, Päikesesüsteem, mikroarvutid