Heat transfer fluids and methods for preventing corrosion in heat transfer systems

A technology of heat transfer fluid and corrosion inhibitor, applied in the field of heat transfer fluid

Active Publication Date: 2019-05-21
布拉斯通产品公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This change in coolant can negatively affect its cor

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  • Heat transfer fluids and methods for preventing corrosion in heat transfer systems
  • Heat transfer fluids and methods for preventing corrosion in heat transfer systems
  • Heat transfer fluids and methods for preventing corrosion in heat transfer systems

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Embodiment Construction

[0014] To ensure a long service life and function as designed, metal components used in automotive cooling systems must be protected from corrosion by engine coolant. Additionally, engine coolant should be compatible with non-metals used in the cooling system such as hoses, gaskets and plastics. Excessive corrosion or degradation of materials used in cooling systems can lead to significant loss of material or component strength, loss of coolant from the system and subsequent failure in one or more cooling system components. All of these events can lead to engine failure. Additionally, even relatively mild corrosion can result in the formation of corrosion products that can form scale or deposits on heat transfer surfaces. These scales or deposits can greatly reduce the rate of heat transfer. The thermal conductivity of non-porous scale is about 1.04 W / mK to 3.46 W / mK at 25°C, and the thermal conductivity of sediment or porous scale may be about 0.35 W / mK at 25°C. These valu...

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Abstract

Heat transfer fluid concentrates include: a freezing point depressant, water, or a combination thereof; an organophosphate; a carboxylic acid or a salt thereof; and a component selected from the groupconsisting of an alkaline earth metal ion, an alkali metal ion, a transition metal ion, an inorganic phosphate, molybdate ion, nitrate ion, nitrite ion, an azole compound, a copper and copper alloy corrosion inhibitor, a silicate, a silicate stabilizer, a water-soluble polymer, and combinations thereof. Ready-to-use heat transfer fluids and methods for preventing corrosion in heat transfer systems are described.

Description

technical field [0001] The present invention relates generally to heat transfer fluids, and in some embodiments, to heat transfer fluids for inhibiting corrosion in heat transfer systems. [0002] background [0003] Modern vehicle engines often require heat transfer fluids (liquid coolants) to provide long-lasting, year-round protection to their cooling systems. The main requirement for heat transfer fluids is that they provide efficient heat transfer to control and maintain engine temperature for efficient fuel economy and lubrication, and to prevent engine failure due to freezing, boil over or overheating. Another key requirement of a heat transfer fluid is that it provide corrosion protection to all cooling system metals over a wide range of temperatures and operating conditions. Corrosion protection of aluminum for engine blocks, cylinder heads, water pumps, heat exchangers and other components made of aluminum or aluminum alloys is of particular importance. In additio...

Claims

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Application Information

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IPC IPC(8): C09K5/10C09K5/08C09K5/20
CPCC09K5/10C23F11/08C23F11/185C23F11/187C23F11/188C09K5/20C09K5/08
Inventor 杨波P.M.沃伊切斯耶斯
Owner 布拉斯通产品公司
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