U-PHOS Project: Development of a Large Diameter Pulsating Heat Pipe Experiment on board REXUS 22

34th UIT Heat Transfer Conference 2016

Nannipieri, P.^1 ; Anichini, M.^1 ; Barsocchi, L.^1 ; Becatti, G.^1 ; Buoni, L.^1 ; Celi, F.^1 ; Catarsi, A.^1 ; Di Giorgio, P.^1 ; Fattibene, P.^1 ; Ferrato, E.^1 ; Guardati, P.^1 ; Mancini, E.^1 ; Meoni, G.^1 ; Nesti, F.^1 ; Piacquadio, S.^1 ; Pratelli, E.^1 ; Quadrelli, L.^1 ; Viglione, A.S.^1 ; Zanaboni, F.^1 ; Mameli, M.^1 ; Baronti, F.^1 ; Fanucci, L.^1 ; Marcuccio, S.^1 ; Bartoli, C.^1 ; Di Marco, P.^1 ; Bianco, N.^2 ; Marengo, M.^3 ; Filippeschi, S.^1

University of Pisa, Largo Lucio Lazzarino 2, Pisa

56122, Italy^1

University of Naples Federico II, Corso Umberto I, 40, Naples

80138, Italy^2

University of Brighton, Lewes Rd, Brighton

BN2 4AT, United Kingdom^3

关键词: Electrical resistances;    Fibre Bragg grating sensors;    Gravity conditions;    Phase change phenomena;    Pulsating heat pipe;    Sounding rocket flights;    Thermal control devices;    Tube wall temperature;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/796/1/012044/pdf
DOI  :  10.1088/1742-6596/796/1/012044

来源: IOP

【 摘 要 】

U-PHOS Project aims at analysing and characterising the behaviour of a large diameter Pulsating Heat Pipe (PHP) on board REXUS 22 sounding rocket. A PHP is a passive thermal control device where the heat is efficiently transported by means of the self-sustained oscillatory fluid motion driven by the phase change phenomena. Since, in milli-gravity conditions, buoyancy forces become less intense, the PHP diameter may be increased still maintaining the slug/plug typical flow pattern. Consequently, the PHP heat power capability may be increased too. U-PHOS aims at proving that a large diameter PHP effectively works in milli-g conditions by characterizing its thermal response during a sounding rocket flight. The actual PHP tube is made of aluminum (3 mm inner diameter, filled with FC-72), heated at the evaporator by a compact electrical resistance, cooled at the condenser by a Phase Change Material (PCM) embedded in a metallic foam. The tube wall temperatures are recorded by means of Fibre Bragg Grating (FBG) sensors; the local fluid pressure is acquired by means of a pressure transducer. The present work intends to report the actual status of the project, focusing in particular on the experiment improvements with respect to the previous campaign.