Heat exchanger rig for testing of heat performance of nanofluids

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F22%3A00557192" target="_blank" >RIV/61388998:_____/22:00557192 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Heat exchanger rig for testing of heat performance of nanofluids

Popis výsledku v původním jazyce

The subject of the functional sample is a heat exchanger rig, which serves for evaluation of overall thermal performance of nanofluids. The thermal performance is evaluated by means of comparative experiments conducted in the heat exchanger rig. The main part of the experimental rig is a pair of concentric-tube measuring heat exchangers (HEX). A tested nanofluid flows in turbulent regime through the “primary circuit” formed by the inner sides of the measuring HEXes connected in series. Between the HEXes, an electrical heater is installed, which can be set to an accurate heating power digitally. The primary circuit is driven by a gear pump whose revolutions are controlled in a closed loop to maintain the volumetric flow rate. After exiting the gear pump, the tested fluid flows through an auxiliary heat exchanger removing heat produced by the pump. In this way, we circumvent the effect of imperfection of the pump depending on its particular type. Outer sides of the measuring HEXes are connected in “secondary circuits” including refrigerated thermostatic baths, digitally controlled centrifugal pumps providing high flow rates, and flow meters with pulsed output. The whole experimental rig is equipped with accurate temperature and pressure sensors located at inlet and outlet of each HEX and near the flow meters. The temperature, pressure, and flow rate readings are sampled by a data acquisition device and stored in a measuring PC. The measured data enable to evaluate the transferred heat, net mechanical energy dissipated in HEXes, heat transfer coefficients, coefficients of performance, and other quantities allowing to compare the results of one fluid with another.

Název v anglickém jazyce

Heat exchanger rig for testing of heat performance of nanofluids

Popis výsledku anglicky

The subject of the functional sample is a heat exchanger rig, which serves for evaluation of overall thermal performance of nanofluids. The thermal performance is evaluated by means of comparative experiments conducted in the heat exchanger rig. The main part of the experimental rig is a pair of concentric-tube measuring heat exchangers (HEX). A tested nanofluid flows in turbulent regime through the “primary circuit” formed by the inner sides of the measuring HEXes connected in series. Between the HEXes, an electrical heater is installed, which can be set to an accurate heating power digitally. The primary circuit is driven by a gear pump whose revolutions are controlled in a closed loop to maintain the volumetric flow rate. After exiting the gear pump, the tested fluid flows through an auxiliary heat exchanger removing heat produced by the pump. In this way, we circumvent the effect of imperfection of the pump depending on its particular type. Outer sides of the measuring HEXes are connected in “secondary circuits” including refrigerated thermostatic baths, digitally controlled centrifugal pumps providing high flow rates, and flow meters with pulsed output. The whole experimental rig is equipped with accurate temperature and pressure sensors located at inlet and outlet of each HEX and near the flow meters. The temperature, pressure, and flow rate readings are sampled by a data acquisition device and stored in a measuring PC. The measured data enable to evaluate the transferred heat, net mechanical energy dissipated in HEXes, heat transfer coefficients, coefficients of performance, and other quantities allowing to compare the results of one fluid with another.

Druh

G_funk - Funkční vzorek

CEP obor

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OECD FORD obor

20303 - Thermodynamics

Projekt

<a href="/cs/project/TH03020313" target="_blank" >TH03020313: Využití nanoaditiv pro zvýšení účinnosti přenosu tepla a chladu u teplosměnných kapalin</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2022

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Interní identifikační kód produktu

INV22-051

Číselná identifikace

INV22-051

Technické parametry

rozsah teplot testované kapaliny: 10 - 80°C,max. tlak ve výměníku: 10 bar

Ekonomické parametry

Soustava výměníků umožňuje kvantifikovat přínos různých aditiv do testovaných kapalin z hlediska přestupu tepla

Kategorie aplik. výsledku dle nákladů

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IČO vlastníka výsledku

61388998

Název vlastníka

Ústav termomechaniky AV ČR v. v. i.

Stát vlastníka

CZ - Česká republika

Druh možnosti využití

V - Výsledek je využíván vlastníkem

Požadavek na licenční poplatek

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Adresa www stránky s výsledkem

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