Short answer: yes
PEX EVOH pipes are suitable for chilled water distribution in HVAC systems. They handle low temperatures without becoming brittle. The EVOH layer protects against oxygen and corrosion. Example: office building air conditioning systems.
Temperature compatibility
Chilled water typically runs at 5-10°C (41-50°F). PEX pipes maintain flexibility at these temperatures. The EVOH layer performs well in cold conditions. PEX EVOH pipes are ideal for chilled applications.
Oxygen barrier importance
Chilled water systems contain metal components. Oxygen causes corrosion in pipes and equipment. The EVOH layer prevents oxygen from entering. PEX EVOH pipes protect the entire chilled water system.
Condensation management
Chilled pipes can develop condensation. Insulation is required to prevent dripping. The PEX pipe surface is compatible with standard insulation. PEX EVOH pipes work well with insulating materials.
Pressure rating for chilled water
Chilled water systems operate at 3-6 bar (45-90 psi). PEX EVOH pipes handle much higher pressures. The PN20 rating is more than sufficient. PEX EVOH pipes have a large safety margin.
Corrosion resistance
Chilled water can be corrosive over time. PEX pipes are immune to rust and corrosion. The EVOH layer adds additional protection. PEX EVOH pipes provide corrosion-free chilled water service.
Example: commercial building cooling
A 20-story office building uses chilled water for cooling. PEX EVOH pipes distribute the water to all floors. The EVOH layer protects the chillers and pumps. Example: a reliable, long-lasting cooling system.
Example: district cooling system
A city district cooling network serves multiple buildings. PEX EVOH pipes carry chilled water underground. The EVOH layer prevents oxygen from entering the network. Example: a corrosion-free district cooling system.
Example: data center cooling
A data center uses chilled water for server cooling. PEX EVOH pipes connect the chillers to the racks. The EVOH layer protects the sensitive cooling equipment. Example: a safe, reliable cooling system.
Installation considerations
Bury the pipes below the frost line. Use proper insulation to prevent condensation. Support the pipes at regular intervals. PEX EVOH pipes install like standard PEX pipes.
UV protection requirement
PEX pipes are not UV resistant. Protect them from sunlight during installation. Bury them or use UV-resistant insulation. PEX EVOH pipes need UV protection for outdoor use.
Final chilled water summary
PEX EVOH pipes are fully suitable for chilled water distribution in HVAC systems. They handle low temperatures without issue. The EVOH layer provides oxygen barrier protection. They resist corrosion and maintain water quality. Pressure ratings exceed chilled water requirements. Insulation is needed for condensation control. Protect them from UV for outdoor installations. PEX EVOH pipes are a reliable choice for chilled water systems. Example: a versatile, durable solution for cooling applications.