design 3.0 - April 2019

After manufacturing the aluminium chassis of design 2.0, the team subjected the test cell was to multiple drop tests. Drop test are essential in order to ensure that the test cell is able to withstand a drop of 2m in a 2.0 g environment (or 4m in a 1g environment) As a result of these drop tests, the team concluded that design 2.0 was not structurally safe to be used in during the parabolic flight campaign. Below can be seen a new design iteration, including features such as steel gaskets surrounding 4 sides of the test cell and the replacement of the aluminium side panels with polycarbonate sheets.

 

The lower test cell must be leak proof as hot fluid will be circulating through the PHP. Although the PHP acts as a primary containment, the test cell can serve as a double containment for this fluid. The heat sink itself provides double containment for the upper part of the experiment, whereas the polycarbonate sheets and steel gaskets provide an airtight compartment for the middle and lower part of the experiment.

Upper Section including heat sink, pressure sensor and filling port

Middle Section including PHP, communication & control circuit boards, pressure releif mechanism

Lower Section including power supply (12V battery) and manual kill switch

design 2.0 - January 2019

Our test cell will consist of a wireless test cell housing, a heater (attached to one end of a multi-loop PHP with a heat sink at one end that will act as a condenser). The PHP will have multiple thermocouples and a pressure transducer to constantly measure the performance of the device, this data will be recorded by an on-board computer and relayed wirelessly to a control PC. This control PC will display a live feed of the system’s status whilst also being able to vary inputs to the PHP at the user’s command.​

 

The original design of the test cell has been modified by replacing the condensing mechanism. Design 2.0 features an aluminium heat sink instead of the original Phase Changing Material (PCM). This modification was implemented due to safety criteria imposed by NoveSpace, who supply the Parabolic flight platform.

Aluminium Heat Sink

Pulsating Heat Pipe

Heating Elements

Arduino

Voltage Step Down

Regulator

Power Supply

Pressure Transducer

4 Way Valve

Wifi/Bluetooth

design 1.0 -  October 2018

PCM Condenser

Pulsating Heat Pipe

Heating Elements

Arduino

Voltage Step Down

Regulator

Power Supply

Pressure Transducer

4 Way Valve

Wifi/Bluetooth