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The development of the automatic thermostat in the 1930s solved this problem by ensuring fast engine warm-up. [4] The first thermostats used a sealed capsule of an organic liquid with a boiling point just below the desired opening temperature. These capsules were made in the form of a cylindrical bellows.
A thermostat exerts control by switching heating or cooling devices on or off, or by regulating the flow of a heat transfer fluid as needed, to maintain the correct temperature. A thermostat can often be the main control unit for a heating or cooling system, in applications ranging from ambient air control to automotive coolant control.
Once the coolant reaches the thermostat's activation temperature, it opens, allowing water to flow through the radiator to prevent the temperature from rising higher. Once at optimum temperature, the thermostat controls the flow of engine coolant to the radiator so that the engine continues to operate at optimum temperature.
What thermostat setting is too cold for below-freezing temperatures outside? Although water freezes at 32 degrees Fahrenheit, it's a good idea to keep your thermostat at 50 degrees or higher.
Here's what you should know about the best temperature to heat your home at, keeping cold air outside and what to set your thermostat to when you're not home. To control your winter energy bill ...
The temperature of the cooling air may range from well below freezing to 50 °C. Further, while engines in long-haul boat or rail service may operate at a steady load, road vehicles often see widely varying and quickly varying load. Thus, the cooling system is designed to vary cooling so the engine is neither too hot nor too cold.
If you're not sure what temperature to set your thermostat, the default advice is to change it by 5 to 10 degrees Fahrenheit. Nudging the temperature a little lower in winter or a little higher in ...
The temperature of the air entering the vehicle's interior can be controlled by using a valve limiting the amount of coolant that goes through the heater core. Another method is blocking off the heater core with a door, directing part (or all) of the incoming air around the heater core completely, so it does not get heated (or re-heated if the ...
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