Direct Contact Condensers

Typical Direct Contact Condensers

As the name suggests, with direct contact condensers the service side (cooling water) and the process sides come together in intimate contact. Direct contact condensers are used when mixing of fluids is acceptable.

Benefits of Direct Contact Condensers (countercurrent, barometric design)

  • Lower purchase cost
  • Lower installation cost
  • Less water needed for a given vacuum condition
  • Smaller terminal difference allows operation at lower absolute pressure
  • Less floor area required
  • Scale or solids build-up has little effect on condenser performance, therefore little or no maintenance is generally required
  • Can be fabricated readily with corrosion resistant materials or supplied economically with rubber or PFA type lining
  • Open barometric discharge provides safe operation without an atmospheric relief valve


Direct contact condenser