1. Advantages of water over nitrogen

1.1 Economic aspect

Unlike nitrogen, which has disastrous heat exchange properties, water easily evacuates joules by conduction. As a result, we can expect to see a significant reduction in cycle times. In practice, on certain parts, we have been able to achieve a 50% reduction compared with gas-assisted injection.

• Comparison of the thermal conductivity of nitrogen and water :

  • nitrogen: k = 37.4 × 10 ^–3 W × m ^–1 × K ^–1...