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Scenero 1: Traditional Transformer Vault Design with open grates.

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Scenario 2: Transformer Vault with forced Ventilation, no grates.

Both scenarios model using Computational Fluid Dynamics (CFD)

CFD simulation of a 500kVA power transformer installed in a standard 11.5ft L x 4.5ft W x 6.5ft H vault

Scenario 1 – Vault construction with dual grating

Scenario 2 – Vault construction using 2000CFM VaultVent for forced cooling and vault vent intake

Scenario 1 – Transformer Vault Simulation w metal grates

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Scenario 1 – Fresh air enters (blue) and hot
air exits (red) provides poor heat transfer
since warm and cooler air flow through same grate with maximum flow rate of 0.15 Kg/s

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Scenario 2 –

Vault construction using 2000CFM VaultVent for forced cooling and vault vent intake

Scenario 2 – Fresh air enters (blue) and hot air exits (red) provides consistent heat transfer with forced cooling and maximum flow rate of 0.94 Kg

Scenario 2 – Z-plane view shows 10 degree Kelvin (21degree F) drop in ambient temperature using VaultVent