Dual control refrigerated air dryers, 1300 to 3000 cfm

Refrigerated air dryers designed for continuous operation and cost savings

Kaeser TH - TI series refrigerated dryers are designed for continuous operation and allow operators of larger compressed air stations to take advantage of significant energy savings. The dryer system not only features extremely low pressure drop, it also employs an innovative refrigerant compressor that continuously adjusts its power consumption: when air flow falls, so does power consumption!

  • Reliably dry compressed air from 1300 to 3000 cfm
  • For working pressures up to 232 psig
  • Air-cooling or water-cooling
  • Optional OR microfilter for extremely high air purity

Your advantages

  • Additional savings in part-load operation:
    Depending on the temperature to which compressed air is cooled, a cycled solenoid valve varies the size of the compression chamber of the refrigeration compressor, which consumes correspondingly less power in part-load operation.
  • Extremely low differential pressure:
    Generously sized stainless steel plate-type heat exchangers ensure low pressure drop to further enhance system efficiency.
  • Industrial quality control cabinet:
    Kaeser energy-saving refrigerated dryers are manufactured to EN 60204-1 and tested for electromagnetic compatibility according to the German EMC Act (EMVG). In contrast to equipment that is only tested to VDE 0700, they are designed to meet the stringent requirements of industrial processes.
The perfect partner: the KCF oil/water separator
KCF condensate filters

Our tip: Take advantage of cost-effective, legally-compliant treatment of condensate before drainage into the regular wastewater system with KCF oil/water separators.


Product details

Innovative exhaust air control with radial fan
The key innovation in the new SECOTEC refrigerated dryers is their radial fan.

Significant space-savings reduce planning and installation costs. Stable pressure dew point performance combined with material-friendly, energy-saving operation thanks to optimal system cooling.


  • According to load, the frequency-controlled radial fan draws off the accumulated exhaust heat from the refrigeration dryer via the cooling air flow.
  • The radial fan is sufficiently powerful to allow standard exhaust air ducting to be connected directly to the refrigeration dryer.
  • The high efficiency dimensioning of the radial fan is also reflected in the low power consumption performance of SECOTEC TG refrigeration dryers.
  • Thermal overload - caused by hot exhaust air being drawn back in as cooling air - is safely avoided.
  • Compared to conventional ventilation systems using air hoods and auxiliary fans: No unnecessary removal of air from the room. This minimizes exhaust air flow which means smaller diameter ducting can be used. There is no longer any need for an auxiliary fan. 
  • Independent exhaust air control and high residual thrust allow direct connection to the compressor collector ducts.  
R-513A: A future-proof refrigerant

The use of small volumes of the future-proof R-513A refrigerant provides security of supply for maintenance work throughout the entire life of the refrigerated dryer.


  • The use of greenhouse gases is becoming ever more strictly regulated throughout the world. Installation of highly compact heat exchangers - such as SECOPACK LS and micro-channel condensers - considerably reduces refrigerant demand.
  • The greenhouse gas potential of R-513A is significantly lower compared to the refrigerants that have commonly been used in refrigerated dryers up until now.
  • R-513A is equivalent to R-134a. It is neither toxic nor flammable.
Design and Function
Component layout of TH and TI refrigeration dryers
  1. Combined air/air and air/refrigerant heat exchangers
  2. Condensate separators
  3. ECO-DRAIN condensate drain
  4. Digital scroll refrigerant compressor
  5. Fluid separator
  6. Refrigerant condenser
  7. Refrigerant collector tank
  1. Filter / dryer
  2. Sight glass
  3. Expansion valve
  4. Expansion valve sensor
  5. Performance control valve
  6. Safety pressure limiter, fan and low pressure switch
  7. Compressed air inlet and outlet
Technical specifications

The technical specifications can be found in this brochure: