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ORCNext – WP4 Development of supercritical technologies. Tom Catternan Henk Huisseune. WP4 and WP5. Model, build and test SC heat exchanger. Heat transfer and pressure drop correlations. Selection of refrigerant :. HX type: horizontal shell & tube or ( spiral ) tube-in-tube.

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Orcnext wp4 development of supercritical technologies

ORCNext – WP4Development of supercriticaltechnologies

Tom Catternan

HenkHuisseune


Wp4 and wp5
WP4 and WP5

Model, build and test SC heat exchanger


Heat transfer and pressure drop correlations
Heat transfer and pressure drop correlations

  • Selection of refrigerant:

  • HX type: horizontal shell & tube or (spiral) tube-in-tube

  • Design method: e.g. (subcritical) method of Taborek

  • No appropriate heat transfer and pressure drop correlationsavailable!

  • Correlationswillbedeterminedthroughexperiments

Easieron single tube thanon full HX


Experimental work plan wp4
Experimentalwork plan WP4

  • Test setupforsupercritical heat transfer in horizontal tube (@UGent - ATHT)

  • Determination of heat transfer and pressure drop correlations

  • Design of a PoC SC heat exchangerbasedoncorrelations

  • Test of PoC SC heat exchanger (@HoWest)

Task 4.2

Task 4.3

Implementation of PoC SC HX in ORC validation of simulations


Requirements
Requirements

  • Easy implementation of SC heat exchanger in HoWestsetup

  • Refrigerant R125 or R134a

  • High pressure (resp. 40 bar and 45 bar)

  • Goodinsulation


Measurements
Measurements

  • Heat supply (hot oil)

  • Refrigerantflowrate

  • Pressure in/out

  • Temperature in/out

  • Temperaturemeasurements in flowdirection (?)

  • Steady-state, if time alsotransient (cfr. validationtask 4.4)



Expected time planning
Expected time planning


Orcnext wp4 development of supercritical technologies1

ORCNext – WP4Development of supercriticaltechnologies

Tom Catternan

HenkHuisseune


Wp4 and wp51
WP4 and WP5

Model, build and test SC heat exchanger


Tasks wp4
Tasks WP4

  • Task 4.1: literaturestudy, selectionrefrigerants, studythermalproperty databases

  • Task 4.2: study of heat transfer (correlations)

  • Task 4.3: build SC shell&tube HX, test, determinecorrelation (@HoWest)

  • Task 4.4: EES simulation of SC ORC + transientbehaviour


Tasks wp5
Tasks WP5


Test facility
Test facility

Experimental setup

  • Feeding pump

  • Pre-heater

  • Test-section

  • Cooler

  • Pressure gauges

  • Flow meter

  • Temperature sensors


Test facility1
Test facility

Test section

  • Working fluid: R125 or R134a

  • Uniform cross section: circular tube

  • Electrical uniform heat flux (DC or AC power supply)

  • Thermocouples


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