How can condensation in vapor recovery lines be avoided?

Avoiding condensation in vapor recovery lines is primarily achieved through proper thermal insulation of the vapor lines. When vapor lines are well-insulated, it helps to maintain the temperature of the vapors transported within them. Insulation prevents the cool ambient air from cooling the vapor line, which can lead to a drop in temperature and subsequently cause condensation of vapor into liquid, reducing the effectiveness of the vapor recovery system and potentially leading to operational issues.

The use of metal pipes, while common in construction due to their strength and durability, does not specifically address the temperature differential that causes condensation. These pipes may not provide insulation and can conduct temperature changes from the environment.

Regularly draining the lines may help manage the condensation that has already occurred, but it does not prevent the initial formation of condensation. This method is more of a reactive solution than a preventative one.

Finally, increasing the pressure in the lines could potentially prevent some vapor from condensing by raising the boiling point of the vapor. However, this method can introduce safety risks and is typically not a standard practice to manage condensation in vapor recovery systems. Proper insulation remains the most effective approach for preventing condensation in the first place.