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District cooling

District cooling

District cooling is becoming increasingly interesting due to the high demands for energy optimization. District cooling is made by absorption and adsorption cooling from electricity production, heatpump systems or natural cooling from the sea or under-ground. VLT® drives can optimize the control of the system and help to increase the total energy saved. The larger the system, the greater power required – and VLT® drives go all the way.
Features

 Benefits

Efficiency increase of electronic expansion valves


 Avoiding “flash gaz” due to lack of subcoolingwhen fans are switching
Stable liquid level
Lower speed at fan extremities
No switching and changing noise levels


 Lower noise level



Lower Δt and higher compressorefficiency


 Less maintenance costs
Less dirt in coils

Resonance Monitoring

 Noise reduction

Cascaded P-PI for temperature control

 Maintenance free

Multi-zone pressure control

AEO using Cos phi algorithm

 Problem free operation inharsh environments

Upto extra 10% savings

Flying start Can control “free-wheeling” fan inboth directions

Improved Floating Head pressure

 Reduced power consumption

SW algorithm to detect abnormaloverall input power

Eliminate need for multi motor klixon


VLT® Pre-heat function
 Eliminate anti-condensation heater

Committed to sustainability

Danfoss is dedicated to manufacturing advanced energy-saving products that improve quality of life while contributing to a safer and cleaner environment. To secure sustainability in all our product development and manufacture, the three pillars on which we base our aim to build a better world are:

  • Energy savings
  • Environmental responsibility
  • Social responsibility