Neste has filed a patent for a renewable paraffinic composition containing at least 80 wt-% paraffins in a C16-C19 range for direct single phase immersion cooling. The patent also covers a direct single phase immersion cooling system and method. GlobalData’s report on Neste gives a 360-degree view of the company including its patenting strategy. Buy the report here.

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According to GlobalData’s company profile on Neste, microscale biofuel reactors was a key innovation area identified from patents. Neste's grant share as of September 2023 was 54%. Grant share is based on the ratio of number of grants to total number of patents.

Renewable paraffinic composition for direct single phase immersion cooling

Source: United States Patent and Trademark Office (USPTO). Credit: Neste Corp

A recently filed patent (Publication Number: US20230313015A1) describes a direct single phase immersion cooling system and method for cooling electronic hardware using a renewable paraffinic composition. The system includes a bath containing a renewable paraffinic composition that consists of at least 80% paraffins in the C16-C19 range. The electronic hardware is immersed in this composition for cooling purposes.

The method for single phase immersion cooling involves providing a bath with the renewable paraffinic composition and immersing the electronic hardware in it. The electronic hardware can be a server or other computer hardware. The method also includes circulating the renewable paraffinic composition through a heat exchanging unit to facilitate cooling. The temperature of operation for this method ranges from 15°C to 90°C.

The renewable paraffinic composition used in this cooling system comprises more than 90% paraffins based on the total weight of the composition. It also contains 90% or more paraffins in the C16-C19 range. Additionally, the composition consists of more than 60% isoparaffins and 5% or less naphthenes. It has less than 2% C15 and lighter paraffins, as well as less than 5% C20 and heavier paraffins.

Furthermore, the renewable paraffinic composition includes more than 37% C17 paraffins based on its total weight. It also contains more than 90% paraffins in the C17-C18 range, with a ratio of C18 i-paraffins to C18 n-paraffins exceeding 40. The composition has a flash point of at least 125°C, a kinematic viscosity below 15 mm2/s at 40°C, and a density ranging from 700 to 850 kg/m3 at 20°C. It also exhibits an electrical conductivity of less than 1 pS/m at 22°C.

The renewable paraffinic composition used in this cooling system has specific thermal properties. It has a volumetric specific heat ranging from 1.60 MJ/(m3K) to 1.90 MJ/(m3K), a thermal conductivity ranging from 0.11 W/(m·K) to 0.15 W/(m·K), and a thermal diffusivity ranging from 0.06 mm2/s to 0.09 mm2/s, all measured at 20°C. Additionally, the composition has a biogenic carbon content of at least 50% based on the total weight of carbon in the composition.

Overall, this patent describes a direct single phase immersion cooling system and method that utilizes a renewable paraffinic composition for cooling electronic hardware. The composition has specific characteristics and properties that make it suitable for efficient and effective cooling.

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GlobalData’s Company Filings Analytics uses machine learning to uncover key insights and track sentiment across millions of regulatory filings and other corporate disclosures for thousands of companies representing the world’s largest industries. This analysis is combined with crucial details on strategic and investment priorities, innovation strategies, and CXO insights to provide comprehensive company profiles.