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A coolant is a substance, typically liquid, that is used to reduce or regulate the temperature of a system. An ideal coolant has high thermal capacity, low viscosity, is low-cost, non-toxic, chemically inert and neither causes nor promotes corrosion of the cooling system. Some applications also require the coolant to be an electrical insulator.
The working fluid of a heat engine or heat pump is a gas or liquid, usually called a refrigerant, coolant, or working gas, that primarily converts thermal energy (temperature change) into mechanical energy (or vice versa) by phase change and/or heat of compression and expansion.
Coolant oil may be limited to cooling objects under approximately 200–300 °C, otherwise the oil may degrade and even leave ashy deposits. Pure water may evaporate or boil, but it cannot degrade, although it may become polluted and acidic. Water is generally available should coolant need to be added to the system, but oil may not be.
I am planning a 5,000-mile trip. Should I replace the original drive belt and radiator hoses when I have the coolant changed?
According to the U.S. Department of Energy, you can save 10 percent on your heating bill when you change your thermostat by 7-10 degrees for just eight hours a day.
Class 1: This class includes refrigerants that cool by phase change (typically boiling), using the refrigerant's latent heat. Class 2: These refrigerants cool by temperature change or 'sensible heat', the quantity of heat being the specific heat capacity x the temperature change. They are air, calcium chloride brine, sodium chloride brine ...
Antifreeze was developed to overcome the shortcomings of water as a heat transfer fluid. On the other hand, if the engine coolant gets too hot, it might boil while inside the engine, causing voids (pockets of steam), leading to localized hot spots and the catastrophic failure of the engine. If plain water were to be used as an engine coolant in ...
When your car's on the lift for an oil change, other wear items such as brake pads, coolant, tires, and shocks can also be assessed and possibly replaced. So it's also obviously good for their ...
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