The authors has designed and realized a new experimental test rig for analysis of Closed Loop Two Phase Thermosyphons (CLTPT) of small dimensions in which heat input up to 1 kW can be tested. It consists of an evaporator, horizontal condenser water cooled. The main characteristic of this apparatus is the presence of three different ways of measuring the mass flow rate: a continuous mode, an integral mode and an indirect mode. The first one is given by the mass flow meter of the Coriolis type placed on the primary line in the single phase tube after the condenser. A secondary line is activated, in which an integral measurement of the mass flow rate is given by measuring the volume liquid collected in a fixed time inside a metering glass tank. A high speed videocamera is used to evaluate the velocity and the volume of the slug and the plug in the riser as a further way for comparing the data evaluated with the mass flow meter and by means of an integral mode. First results are very perspective full. The aim of the apparatus is define correlation of mass flow rate and heat input.
Experimental analysis of small two phase loop thermosyphons
FILIPPESCHI, SAURO;FRANCO, ALESSANDRO
2012-01-01
Abstract
The authors has designed and realized a new experimental test rig for analysis of Closed Loop Two Phase Thermosyphons (CLTPT) of small dimensions in which heat input up to 1 kW can be tested. It consists of an evaporator, horizontal condenser water cooled. The main characteristic of this apparatus is the presence of three different ways of measuring the mass flow rate: a continuous mode, an integral mode and an indirect mode. The first one is given by the mass flow meter of the Coriolis type placed on the primary line in the single phase tube after the condenser. A secondary line is activated, in which an integral measurement of the mass flow rate is given by measuring the volume liquid collected in a fixed time inside a metering glass tank. A high speed videocamera is used to evaluate the velocity and the volume of the slug and the plug in the riser as a further way for comparing the data evaluated with the mass flow meter and by means of an integral mode. First results are very perspective full. The aim of the apparatus is define correlation of mass flow rate and heat input.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
