Usporedba rezultata ispitivanja mjerila toplinske energije provedenih pomoću dvaju neovisnih mjernih sustava

master's thesis

• Title (english): Comparsion of heat-meters testing results performed using two independent mesurement systems
• Author: Đuksi Matija
• Mentor: Lovorka Grgec-Bermanec (mentor)
• Mentor: Danijel Šestan (mentor)
• Granter: University of Zagreb; Faculty of Mechanical Engineering and Naval Architecture; Zagreb
• Defense date and country: 2018-12-07, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Mechanical Engineering; Process Energy Engineering

Abstract

Toplinska energija je nezaobilazna fizikalna veličina u mnogim segmentima industrije i zgradarstva. Mjerenjem toplinske energije moguće je odrediti iskoristivost postrojenja za njenu proizvodnju te procijeniti energetske gubitke potrošača. Na temelju izmjerene predane toplinske energije proizvođači vrše njenu naplatu, što je propisano pravilnicima koje donosi zakonsko tijelo na razini države. Pravilnicima su propisani načini mjerenja toplinske energije te kriteriji koje mjerni uređaji, upotrebljeni u tu svrhu, moraju zadovoljavati. Jedan od kriterija odnosi se na zahtijevanu točnost ovih uređaja. Načini određivanja sukladnosti ispitivanog mjerila sa zahtjevima na njegovu točnost definirani su normama, na razini Europske unije.
U ovom radu dan je kratak pregled točaka norme HRN EN 1434, koja se odnosi na mjerila toplinske energije. U skladu sa zahtjevima opisanim predmetnom normom, izvršena su ispitivanja dvaju mjerila toplinske energije proizvođača Siemens (model 2WR5051-5CC10-6KB9). Oba mjerila ispitana su upotrebom dviju neovisnih ispitnih sustava, smještenih na Fakultetu strojarstva i brodogradnje u Zagrebu:
1. sustava MK10/15-40, laboratorija za toplinsku energiju (LTE)
2. sustava ACTARIS RAC2200/1/5-AG-EH, laboratorija za procesna mjerenja (LPM)
Uz rezultate provedenih ispitivanja, rad također sadrži opis procjene pripadnih mjernih nesigurnosti, tehničke opise obje ispitne linije i ispitivanih mjerila te usporedbu rezultata ispitivanja upotrebom dvaju neovisnih ispitnih sustava.

Abstract (english)

Thermal energy is an unavoidable physical quantity in many segments of industry and building. Thermal energy measurement enables determination of efficiency for an energy source as well as estimation of heat losses at the consumer. Based on the delivered energy measurement, the producers can make the billing, in accordance with country regulations. Those regulations prescribe the measurement conditions, procedures as well as the criteria that must be meet by the heat meters. One of the mentioned criteria is related to required accuracy of an heat meter. Determination of conformity of an heat meter with the required accuracy level is defined by the related standard and harmonized on the European level.This paper gives a brief overview of HRN EN 1434 standard, which is related to heat meters. In accordance with the requirements predescribed by the mentioned standard, two thermal energy meters produced by Siemens (model 2WR5051-5CC10-6KB9) were tested by using two independent testing systems, both being situated at Faculty of Mechanical Engineering and Naval Architecture in Zagreb:
1. system MK10/15-40, Laboratory for Thermal Energy (LTE)
2. system ACTARIS RAC2200/1/5-AG-EH, Laboratory for Process Measurement (LPM)
Together with the results of the performed measurements, paper also gives the description of estimation of related measurement uncertainties, technical descriptions of both testing systems and tested heat meters as well as the comparison of the results obtained by using two independent testing systems.

• Keywords: toplina; mjerila toplinske energije; kalorimetri
• Keywords (english): heat; heat meters; calorimeters
• Language: croatian
• URN:NBN: urn:nbn:hr:235:866741
• 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
• Created on: 2019-05-24 13:00:53