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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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Presentation Transcript
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)
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
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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