There are different types of liquid cooling, but there is only one Submer Immersion Cooling. Innovation and evolution happen through education. Here you will find some of the most common questions regarding immersion cooling and our technology.
Also known as liquid submersion cooling, it is the practice of submerging computer components (or full servers) in a thermally, but not electrically conductive liquid (dielectric coolant).
Yes. As Immersion Cooling uses a thermally conductive liquid, it is ca. 1400 time more efficient than air cooling at transporting heat.
Submer uses their own in-house developed synthetic dielectric fluid (SmartCoolant) which does not conduct electricty, but is extremely efficient at dissipating heat and protects hardware from dust/sand particles and from moisture.
With a lifespan of 15-20 years, Submer’s SmartCoolant is designed to see multiplegenerations of IT Hardware.
No. Submer's SmartCoolant does not evaporate at room or at operating temperatures.
No. SmartCoolant is non-toxic, biodegradable, innocuous to hardware and is classified as a food-grade fluid.
No. On the contrary, it protects it from external elements such as moisture, dust/sand particles and extends its lifespan while reducing IT Hardware failures.
Power usage effectiveness (PUE) is a ratio that describes how efficiently a computer data center uses energy; specifically, how much energy is used by the computing equipment (in contrast to cooling and other overhead).
Critical IT load is the total power required by servers, storage, network and other devices in the data centre that must keep running if there is a loss of utility power. It doesn’t include the load due to mechanical systems, lighting and other requirements.
The lifespan of the SmartCoolant is 10-12 years. We have done accelerated aging tests at higher temperatures to assure that our fluid can serve you long time.
Yes, we have installations all over the world. For instance, here in Barcelona we work with BSC (Barcelona Super Computer). In Europe we also work with JRC, CERN, Airbus.
Submer's Barcelona facility can produce up to 10,000 SmartPods a year and Submer's US facility can also produce up to 10,000 SmartPods a year.
Yes. You can submerged harwares such as ASICs, FPGAs and GPUs. We can accomodate a wide range of form factors.
No this is not a problem. The heat exchanger is connected to an external water loop which would then be connected to a heat pump to achieve heat reuse.
No this is not too high as our solution is not only a horizontal rack, but as well the whole primary cooling system. It embeds a heat exchanger and a redundant pumping system, and comes with our non-evaporative dielectric fluid which has a lifespan of 20 years. This is a smart and fully-automated system, and the most advanced and innovative on the market.
The equipment comes with two maintenance rails. Take the server out of the fluid with gloves as it can be a little slippery, place it on the rails, remove/replace the damaged parts and replace it into the fluid. If you need to send the server for bigger maintenance, we will provide you with another fluid that cleans our SmartCoolant.
Yes, our main certifications are: CE, UL, ISO and IP65.
Any kind of electronic hardware can be submerged - Servers, switches, measurement equipment, GPUs, CPUs, ASICs, power-supplies etc.
Many manufacturers provide hardware ready for Immersion Cooling (2CRSI, Fujitsu, Gigabyte, Supermicro - contact Submer for specific model information) but you can submerge any hardware with only slight modifications:
Submer advocates the use of three-phase power supplies as they are more efficient.
Depending on deployment geography, Submer's SmartPods require:
Each SmartPodX and SmartPodXL with one CDU consumes ca. 400W/h while disappating 50kW of heat.
Solid-state drives (SSD, NVMe or Flash) OR helium sealed drives.
Submer SmartPods are TierIII compatible (N+1 - redundant pumping and electronics in every CDU) and TierIV can be achieved with and additional CDU (N+N).
A SmartPodX weighs ~215kg and ~800kg when filled with 650L of SmartCoolant and the IT-Hardware may weigh up to 300kg, so ca. 1100kg spread evenly over a surface area of 1m². A typical raised floor (technical floor) can accommodate 1500kg per m². SmartPodXL fully loaded weighs ca. 2200kg and is spread over 2m².
Each CDU has an ethernet port that can be used to connect SmartPods (live and historic sensor data and control) to network (to interface with monitoring, DCIM, BMS or similar) and/or SubmerCloud.
1.03 PUE or less, certified by an independent third party. Also the fact that fans are either removed or disabled saves a further 15-25% on top.
Water is only required to fill the closed secondary cooling loop once during installation.
Because of higher setpoints, one can take advantage of ambient air temperature and dry coolers to perform secondary cooling without the use of chillers or compressors.
Submer's coolant never leaves the SmartPod (tank) and uses no-leak quick connects and remote shutoff valves to ensure water can never leak in to the DC. Technicians are taught procedures to ensure proper handling (trays, maintenance rails etc).
The amount of additional training needed is minimal. The same staff manage both the immersion cooling and air cooling systems.
No, the fluid is not flammable and has a very high flashpoint (159º).
Yes, we offer a standard 2-years warranty for a SmartPod, according to CE.
With SmartPod you can keep servers cooled up to 15minutes in case of electricity failure. It will give you enough time to intervene.
No. Corrosion is an electrochemical reaction which cannot occur in dielectric fluids. In fact, our SmartCoolant protects against corrosion and oxidation.
Yes. As it is made from food-grade components, it is an extremely pure fluid which can be sold to oil recyclers at the end of its useful life in the SmartPod.
Arrange for recycling or disposal with relevant authorities in your area. Do not discharge into sewerage or public waters.
SmartCoolant is a single phase fluid, which means that it cools servers by convection and does not evaporate.
No. Submer offers SmartPod and SmartCoolant as a whole Immersion Cooling Solution and they are not sold separately.
Currently we are working on heat reuse projects with some universities. We are interested in partnering up with companies involved in such projects.
The SmartPod will still have a high residual value when the liquid will reach the end of its lifecycle (10 years). Depreciation of the SmartPod is approximately 10 years.
Yes, we offer immersion ready servers through our partners. But this is optional and customers can choose their preferred OEM.