The role of barbecue table with water on both sides is to make the fire burn more vigorously.

1, because carbon is a solid, the contact with oxygen is not as full as gas, so the burning is limited.

2, after adding water, carbon reacts with water to produce hydrogen and carbon monoxide.C+H2O=CO+H2(heated)

3, the two combustible gases, carbon monoxide and hydrogen, escape and come into full contact with the oxygen in the air and continue to burn, making the fire burn more vigorously.