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Phobya G-Changer 420 review

Phobya’s triple radiator for 140 fans


All experiments were conducted on a specialized bench table with heat load up-to 600W. Several sensors were measuring inlet air/outlet air/ambient temperatures. Heat carrier temps inside WC loop were collected via sensors on radiator input/output.

Testbed configuration:

  • Pump: Swiftech MCP35x @ 12V + stock top
  • Reservoir: 5 litter canister
  • PVC hose: inner diameter 12mm, outer diameter 16mm
  • Barbs: 1/2 Fatboy, inner diameter 9.8mm
  • Data acquisition devices: mCubed T-Balancer + Sensor Hub
  • Fans: Yate Loon D14SM-12
  • Flow meter: Koolance INS F17, calibrated, accuracy 2%
  • Heat carrier: distilled water
  • Heat source: 2x in-line Hydor ETH-300 heaters with overall power load of upto 600W, automatic temperatures control future disabled. Power was collected with an energy meter with, accuracy of 5%

More detailed description of testing methodology will be published in corresponding article.

Radiator thermal testing ended with the following results:

Phobya G-Changer 420

This allowed us to calculated С/W ratio in reference with fan speeds. Next, we have built a table that reflects expected water(avg)-air in(avg) temperature delta:

Phobya G-Changer 420: performance numbers

Phobya G-Changer 420: radiator performance

We also determined how restrictive this radiator is by measuring a flow rate inside a simple (reservoir-pump-radiator) WC loop featuring Phobya G-Changer 420. During testing the following data was collected:

Phobya G-Changer 420: flowrate data

The graph below reflects radiator flow rate with MCP35X pump running at different speed:

Phobya G-Changer 420: flowrate graph

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