Heat Exchange

  • Dantherm DC Thermosiphon for Telecom and Electronics cooling DC Thermosiphon 150

For Telecom cabinets

The Dantherm DC Thermosiphon provides cooling without air conditioning and is specifically designed with Telecom installations in mind.

Compact, high efficient heat exchange

Thermosiphons are next-generation heat exchangers, because they have a more compact way of generating heat exchange than traditional air-to-air heat exchangers. In other words, Thermosiphons generate more cooling in smaller spaces. 

Closed loop, energy efficient cooling

Passive cooling systems are among the most energy-efficient in the market, next to Free Cooling. The closed loop control system ensures a clean internal environment for sensitive electronic equipment, which means that no filter is needed. 

Easy to install

The Thermosiphon is easily installed without affecting uptime, which secures site earnings even during installation and service.  
Dantherm is among the first suppliers to enter the market with a fully industrialized version of this concept and already has experience from 50.000+ Thermosiphons running in the field.

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DC Thermosiphon

Extremely energy-efficient
Fully industrialized
Closed loop cooling

  • Radio base stations
  • Telecom shelters
  • Electronics enclosures
  • Power supply rooms
  • Network & computer rooms
  • Drive stations
  • Automation control cabinets
  • Hybrid Telecom Sites
  • Telecom Cabinets
Features and Benefits

Construction and design:

  • Closed loop cooling
  • Corrosion-proof components

Operation modes:

  • Main cooling mode with dynamic, step-less fan speed control.
  • Power save, boost, emergency cooling, self-test.

Communication, alarms and surveillance:

  • IP-connection, LED-signals, TTL-link, SD card.
  • 2 galvanically insulated alarm outputs: High and low temperature, fans, temperature sensor function

 Built-in safety:

  • Leakage, voltage and function test from factory.
  • Reverse polarity protection
  • Inrush current limiter

Easy installation:

  • Installation cable provided.
  • No need for cooling technician.
  • No soldering or refrigerant filling on site.
DC thermosiphon Capacities 150
Supply Voltage Nominal VDC 48
Capacity in W/K 150
Capacity in kW - at Δt = 10°C 1.5
Max internal air flow m³/h (free blowing measurement) 1,000
Weight in kg 35


Features - Dantherm DC Thermosiphon Line 150
Closed loop cooling Separates air streams Separates internal air stream from external air stream. Keeps outside contaminants from entering the enclosure. No filter is needed. Contributes to a long service life of the electronic equipment and minimizes OPEX. bullet
Thermosiphon cooling method Passive heat exchange Passive heat exchange based on natural convection. Highly energy-efficient and environmentally friendly cooling method, resulting in low OPEX and a carbon footprint reduction. bullet
Cooling circuit without compressor Passive cooling Passive cooling by means of natural principle of heat transfer. Energy-efficient, lower OPEX, easy to transport lying down - which reduces transport costs. bullet
No filter needed Closed loop cooling Cost-saving; no filter maintenance or replacement. Results in low service and maintenance costs. bullet
Two centrifugal DC EBM fans High-capacity and quality fans High-capacity and quality fans. Energy-efficient and cost-saving. High quality resulting in low TCO and prolonged service life. bullet

Construction and design

Thin, aluzinc sheet metal powder coated with RAL7035 Corrosion-proof Strong, corrosion-proof construction (EN 10143 & EN 10327). Prolonged service life. bullet 
Corrosion protected components Service life extending Anti-salt spray treated coil, water-resistant fan, external fan with humidity protection: all highly environment protected. Suitable for coastal areas. Long service life. bullet
Ingress protection level 55 (IP55) IP 55 Protects electronic equipment in the enclosure from dust, water and wind-driven rain according to EN 60529. bullet
Operation Modes  150
Cooling Thermosiphon cooling Energy-efficient cooling with dynamic, step-less fan speed control. Reduces OPEX. bullet
Power Save Stand-by in case of low power supply Prolongs battery performance. Extends transmission time in case of power outage. bullet
Boost In case of overheating In case of overheating, the fans will be running at 100 %. Ensures base station uptime even at extreme ambient temperatures. bullet
Emergency cooling Built-in safety In case of controller failure, cooling is maximized to ensure base station uptime.  bullet
Controllers and Sensors 150
Dantherm CC1 control strategy Advanced, energy-saving control strategy. With stepless and adaptive fan regulation. Reduces carbon footprint and minimizes energy consumption. Low OPEX. Designed for maximum uptime of the electronic equipment with built-in safety with reverse polarity protection, poke-in connections and inrush current limiter. Gives safe installation, service and maintenance and contributes to site uptime. bullet
Hotspot sensor (optional) Hotspot sensor Cooling is regulated according to extra temperature-sensitive or heat-emitting equipment. Prolongs service life of electronic equipment in the site. bullet
Testing 150
Thorough factory testing From factory Leakage, function and voltage test. Quality assurance, smooth installation, long service life. bullet
Self-test function Self-test function Used at start-up and service. bullet
Installation and service 150
Mono-block, plug and play installation. Mono-block, plug and play Easily installed. No need for soldering or refrigerant filling on site. Low installation cost. bullet 
Wall duct for inside installation Optional Flexible and easy installation. Cost and time saving installation. bullet
Communication interface 150
Remote and on-site access to settings and read-out of running conditions and alarms bullet 
SD Card Logging and reprogramming For configuration read-outs, running history log, parameter change. bullet
TTL Link With TTL cable Serial connection for PC bullet
LED lights for status Alarms and operation status Gives quick overview of running status - time saving during maintenance visits. bullet
Environment 150 
Energy-efficient fans Low operational expenses Minimal power consumption. Long service life, reduced energy costs. Low OPEX. bullet
Refrigerant R134a Low carbon footprint Refrigerant R134a Environmentally friendly. Low carbon footprint. bullet
  • Dantherm DC Thermosiphon DC Thermosiphon
Service manual
Download DC Thermosiphon Data sheets Datasheets Controllers