Desuperheater Water Heater for Effective Temperature Control


What is a Desuperheater?

A desuperheater is a device that cools down the superheated refrigerant (gas that is at a temperature above its saturation temperature). The temperature of this gas is reduced by spraying droplets of water into the flow of the superheated gas.

Maniks has a wide range of desuperheaters as they provide precise refrigerant temperature control for various applications in boilers, chemical, oil & gas process plants, etc where the available refrigerant is at superheated conditions. These desuperheaters have high performance, custom design, easy to install and with almost zero operating cost.

Maniks have two Desuperheaters :

  • Freon Desuperheater - SERIES HEF 33- XXX- 22
  • Ammonia Desuperheater - SERIES HEA 77- XXX- 717


fundamental desuperheater
Compressor Type Discharge Temperature
Screw (Indirect cooled) 70 to 80℃
Screw (Injection cooled) 50 to 60℃
Reciprocating 85 to 110℃
Boosters (Rotary & Reciprocating) 75 to 85℃

In a usual AC & R system, the refrigerant temperature rises in tune of 80℃ to 120℃ after compression. The refrigerant is further put to the air/ water cooled condenser to condense near about 40℃.

While the condensing of refrigerant in the condenser, the total heat contained in this high Temperature/high pressure gas gets wasted to the atmosphere.

This superheat of the gas which is part of the total heat content of the gas, has a substantial heat potential provided the same is reclaimed efficiently and is optimized for energy saving

Maniks Desuperheater Water Heater is the ultimate accessory for an AC & R plant that can be used to remove superheat of the refrigerant.


Double Walled " Tube in Tube ", vented, counter flow heat exchanger. Vent tube having serrations on inner & outer surfaces to avoid cross contamination of refrigerant and water/ fluid. Each tube has a tube inside that allows water/ fluid to travel in an opposite direction.

desuperheater design


desuperheater installation

The Desuperheater Water Heater is installed before the condenser and the oil separator. The refrigerant travels through the series of tubes in the Desuperheater before entering the condenser. Normally the Desuperheater Water heater is designed considering the hot water requirement for the processes. When needs of hot water & refrigeration are not simultaneous, a " Recirculation " type system is provided wherein hot water is generated, stored & maintained in an insulated tank. This hot water then can be utilised as and when required.

The Desuperheater water heater can be easily retrofitted on reciprocating, scroll or screw type chillers.

Special Services
maniks repair kit
  • We offer special service for your existing system components for pneumatic pulse application, to recondition your inoperative valves and assure operating reliability as good as new . DO NOT scrap your valves (ONLY IMPORTED) unless inspected by our experts.
  • We provide special enclosures for timers such as flame proof enclosures , SS enclosures , FRP enclosures , IP65 enclosures on request.
  • We also cater to special requirement such as flame proof enclosures for valves.