A Échangeur à caloducs uses sealed tubes filled with a working fluid to move heat from one air stream to another. It has no moving parts, requires no external power, and keeps the two streams physically separated.
Working Principle
Each heat pipe is a sealed tube with an internal wick structure. At the hot end, the working fluid evaporates and absorbs heat. The vapor travels to the cold end, condenses, and releases heat. Capillary action in the wick returns the liquid to the hot end, repeating the cycle continuously.
Common Working Fluids
- Water (for moderate temperatures, ~30–250 °C)
- Ethanol and methanol (for low-temperature applications)
- Refrigerants such as R134a or R410a (for HVAC ranges)
- Specialty fluids for high-temperature exhaust
Advantages
- No moving parts, so maintenance is minimal
- No cross-contamination between air streams
- Self-regulating: heat transfer increases with temperature difference
- Can be arranged in U-shape, L-shape, or straight banks
Best Applications
- Mine and tunnel ventilation
- Telecom shelters and battery rooms
- Transformer and electrical cabinet cooling
- Waste heat recovery from low-grade exhaust
- Environments with explosive or contaminated gases
Selection Notes
Heat pipes are best when the two air streams are separated by distance or when complete isolation is required. They are not usually the first choice for very high moisture recovery or very large airflow volumes.
Questions fréquemment posées
Do heat pipes need electricity?
No. The cycle is driven entirely by temperature difference and capillary action.
Can heat pipes freeze?
If water is the working fluid and ambient temperature drops below freezing, anti-freeze fluids or refrigerants should be selected.
Questions fréquemment posées
Do heat pipes need electricity?
No. The cycle is driven entirely by temperature difference and capillary action.
Can heat pipes freeze?
If water is the working fluid and ambient temperature drops below freezing, anti-freeze fluids or refrigerants should be selected.
Spécifiez le bon échangeur
Nos ingénieurs dimensionnent le noyau selon votre débit, température et budget de perte de charge, et choisissent la récupération par plaque, rotative ou caloduc selon l'application. Lisez le guide de l'échangeur , ou contactez-nous pour une spécification.
Produits connexes
Récupération par plaque, rotative ou caloduc pour le CVC et la ventilation.
Noyaux stationnaires à grande surface pour l'air et le liquide.
Récupération d'énergie à haute efficacité pour grands débits.
Courants passifs et totalement séparés pour applications propres.