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Coolar – Fertigung

Develops off-grid medical refrigerators, powered by solar heat instead of electricity.

Coolar Logo

Coolar UG (haftungsbeschränkt)

Wolfener Str. 32-34, Haus C, 12681 Berlin · Torgauer Straße 12, BerlinNew on Amplifa

2016Founded
11–50Employees
UG (haftungsbeschränkt), HRB 178139 BLegal form

About Coolar

Coolar UG is a Berlin-based cleantech company that develops off-grid cooling systems. Its core product is a medical refrigerator based on an adsorption refrigeration process using silica gel and water in a vacuum system, powered by heat at around 60 °C from solar thermal energy, district heat from combined heat and power, or waste heat. The main target application is the reliable cooling of vaccines and medicines in regions without a stable power grid; energy is stored in insulated hot water tanks rather than batteries. The system operates without harmful refrigerants and lubricants, without batteries, and without moving wear parts. In addition, Coolar offers the Camping Cold Box, a battery-free mobile cool box. The company was founded in 2016 and is registered at the Charlottenburg Local Court under HRB 178139 B.

Site
Berlin
Processes
Off-grid medical refrigerators (adsorption cooling with solar heat), Mobile camping cool box
Materials
Adsorption refrigeration process (silica gel/water), Solar thermal energy / district and waste heat
Founded
2016
Employees
11–50
Industries
Medical technology / Healthcare, Refrigeration technology / Energy process engineering, Cleantech, Outdoor/Camping
  1. 01

    Technology development & prototyping

  2. 02

    Manufacturing/industrialization with partners

  3. 03

    Assembly of the cooling system

  4. 04

    Sales of medical cooling & camping products

Technology & Processes

Adsorption

Adsorption refrigeration process (silica gel/water)

Vacuum system that generates cooling from heat starting at around 60 °C, without refrigerants, batteries, or moving parts.

Solarwärme

Solar thermal energy / district and waste heat

Heat source for operating the cooling systems as an alternative to the power grid.

Locations

Berlin

DE

Headquarters, technology development

Materials
Adsorption (silica gel/water)

Products

Medical refrigerator (off-grid)
Medical refrigerator (off-grid)Adsorption cooling · Medical technology
Camping Cold Box
Camping Cold BoxBattery-free mobile cooling · Outdoor

Inside the production

Founder and CEO Julia Römer
Founder and CEO Julia Römer
Christoph Göller, Co-Founder Business Development
Christoph Göller, Co-Founder Business Development
Roland Kühn, Co-Founder Technology Development
Roland Kühn, Co-Founder Technology Development

Industries

Medical technology / HealthcareRefrigeration technology / Energy process engineeringCleantechOutdoor/Camping

Additional services

Off-grid medical refrigerators (adsorption cooling with solar heat)Mobile camping cool box

History

  1. 2014

    Julia Römer initiates Coolar.

  2. 2016

    Company founded as Coolar UG (haftungsbeschränkt) in Berlin.

  3. 2018

    Europe Finalist at the Cartier Women's Initiative Awards.

  4. 2020

    SET100 Award Winner (Start Up Energy Transition).

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