Freezing points of ethylene glycol based water solutions at various temperatures are indicated below.
Some of our calculators and applications let you save application data to your local computer. Note! Ethylene Glycol based water solutions are common in heat-transfer applications where the temperature in the heat transfer fluid can be below 32oF (0oC). 0000346799 00000 n 0000026923 00000 n The net impact can be estimated to 0.815 * 1.077 = 0.877. 0000351637 00000 n
Get exclusive access to content from our 1768 First Edition with your subscription. hެVkL�g>�����EPڊ\l� "����]� 0000022974 00000 n Specific gravity - SG - of ethylene glycol based water solutions at various temperatures are indicated below. Engineering ToolBox - Resources, Tools and Basic Information for Engineering and Design of Technical Applications! These applications will - due to browser restrictions - send data between your browser and our server.
If you want to promote your products or services in the Engineering ToolBox - please use Google Adwords. Especially significant is resin formation, including the condensation with dimethyl terephthalate or terephthalic acid resulting in … A 1:1 solution of ethylene glycol and water boils at 129 °C (264.2 °F) and freezes at −37 °C (−34.6 °F), serving as an excellent coolant in automotive radiators. Cookies are only used in the browser to improve user experience. You can target the Engineering ToolBox by using AdWords Managed Placements. The density of ethylene glycol is higher than water - check the specific gravity (SG) table above, so the net impact on the heat transport capacity is reduced. In a 50% solution with operational temperatures above 36 oF the specific heat capacity is decreased with approximately 20%. Note! Properties differs so much from clean water that heat transfer systems with ethylene glycol should be calculated thoroughly for actual temperature and solution. 0000023125 00000 n Finally, ethylene glycol, which is widely used as an antifreeze agent in automobiles, causes renal damage when it is biotransformed to oxalic acid, which crystallizes in the renal tubule (Table 2).…, …freezing temperature decreases appreciably when ethylene glycol is mixed with water.…. 0000350731 00000 n
Ethylene glycol is also used to make polyester fibers and PET plastic, to de-ice airplanes, and in the mining industry to keep chunks of coal from sticking together. The installation temperature of the system is down to 0oC and the maximum medium operation temperature is 80oC. Our editors will review what you’ve submitted and determine whether to revise the article.
0000003247 00000 n 0000002850 00000 n Ethylene glycol should be avoided if there is a slightest chance of leakage to potable water or food processing systems. Note! Professor of Chemistry, Whitman College, Walla Walla, Washington. From the table above we see that the density of the solution at installation temperature can be as high as 1090 kg/m3 - and the medium density at operation temperature can be as low as 1042 kg/m3. Specific gravity at the same conditions is 1.077. 0000003147 00000 n Only emails and answers are saved in our archive. 0000022157 00000 n 0000022724 00000 n By signing up for this email, you are agreeing to news, offers, and information from Encyclopaedia Britannica. Our latest podcast episode features popular TED speaker Mara Mintzer. Specific gravity at the same conditions is 1.077.
Author of. The mass of the liquid at installation can be calculated as, minst = ρinst Vinst (1), minst = mass of liquid at installation (kg), Vinst = liquid volume at installation (m3), Mass of the liquid in the system during operation will be same as the mass in system during installation, minst = mop (2), (2) can be modified to calculate liquid operation volume as, Vop = minst / ρop (2b), The required expansion volume to avoid pressure can be calculated as, ΔV = Vop - Vinst (3), ΔV = (ρinst / ρop - 1) Vinst (4), Specific Heat - cp - of ethylene glycol based water solutions at various temperatures are indicated below. 0000346310 00000 n Distilled or deionized water should be used for ethylene glycol solutions.
Ethylene glycol is a clear, sweet, slightly viscous liquid that boils at 198 °C (388.4 °F). Due to possible slush creation, ethylene glycol and water solutions should not be used in conditions close to freezing points.
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