Mjerenje pada tlaka propana u koaksijalnom cijev-u-cijevi kondenzatoru

undergraduate thesis

• Title (english): Measurement of propane pressure drop in coaxial tube-in-tube condenser
• Author: Ivan Grubišić
• Mentor: Vladimir Soldo (mentor)
• Granter: University of Zagreb; Faculty of Mechanical Engineering and Naval Architecture; Zagreb
• Defense date and country: 2022-09-29, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Mechanical Engineering; Process Energy Engineering

Abstract

Predviđanje dvofaznih padova tlaka u isparivačima i kondenzatorima prilikom projektiranja i optimizacije rashladnih, klimatizacijskih i toplinskih sustava je od iznimne važnosti. Ovaj završni rad bavi se mjerenjem pada tlaka na koaksijalnom kondenzatoru pri različitim protocima radne tvari. Koaksijalni kondenzator, koji se nalazi u Laboratoriju za toplinu i toplinske uređaje, dio je eksperimentalnog rashladnog sustava. U unutarnjoj orebrenoj cijevi kondenzatora struji voda, dok u vanjskoj cijevi kondenzatora struji radna tvar. Sva mjerenja obavljena su na temperaturi kondenzacije 40℃ i tlaku kondenzacije 13,7 bara. Za proračun pad tlaka korišteni su izrazi iz literature. Rezultati dobiveni pomoću izraza iz literature uspoređeni su s mjerenim rezultatima pada tlaka dobivenim u laboratoriju. Rad ispituje podudarnost, odnosno odstupanje proračunatih rezultata pada tlaka dobivenih korištenjem izraza i rezultata dobivenih mjerenjem.

Abstract (english)

Prediction of two-phase pressure drop in evaporators and condensers when designig and optimizing cooling, air conditioning and heating systems is of crucial importance. This final paper deals with the measurement of the pressure drop on the coaxial condenser at different flow rates of the working substance. The coaxial condenser, located in the Laboratory for Heat and Thermal Devices, is part of the experimental cooling system. Water flows in the inner finned tube of the condenser, while the working substance flows in the outer tube of the condenser. All measurements were made at a condensation temperature of 40℃ and a condensation pressure of 13,7 bar. Expressions from the literature were used to calculate the pressure drop. The results obtained using expressions from the literature were compared with the measured pressure drop results obtained in the laboratory. The paper examines the agreement, or deviation of the calculated pressure drop results obtained using the expression and the results obtained by measurement.

• Keywords: Pad tlaka; koaksijalni kondenzator; mjereni i proračunati rezultati
• Keywords (english): Pressure drop; coaxial condenser; measured and calculated results
• Language: croatian
• URN:NBN: urn:nbn:hr:235:894618
• Study programme: Title: Mechanical Engineering; Study programme type: university; Study level: undergraduate; Academic / professional title: sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka strojarstva (sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka strojarstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2022-09-26 19:29:06