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  2. Crankcase heater - Wikipedia

    en.wikipedia.org/wiki/Crankcase_heater

    The sensed temperatures are compared and if the compressor temperature is not a specified amount higher than the lower of the other two sensed temperatures, then the crankcase heater is energized. When the compressor temperature rises to or is a specified amount above the lower of the other two temperatures, the crankcase heater is de-energized ...

  3. Automotive air conditioning - Wikipedia

    en.wikipedia.org/wiki/Automotive_air_conditioning

    [34] [35] It was an early type of automobile air conditioner [36] and is not used in modern cars relying on refrigerative systems to cool the interior. To cool the air it used latent heat (in other words, cooling by water evaporation). [37] Water inside the device evaporates and in the process transfers heat from the surrounding air.

  4. Car won’t start in the cold? Check out these tips as winter ...

    www.aol.com/car-won-t-start-cold-170523670.html

    “It’s just so dang cold,” one Kansas City auto mechanic said. Learn how to prepare your car for the frigid temperatures in the weather forecast this weekend.

  5. Heater core - Wikipedia

    en.wikipedia.org/wiki/Heater_core

    In a car equipped with air conditioning, outside air, or cabin air if the recirculation flap has been set to close the external air passages, is first forced, often after being filtered by a cabin air filter, through the air conditioner's evaporator coil. This can be thought of as a heater core filled with very cold liquid that is undergoing a ...

  6. Here's what to do when a car won't start in cold weather

    www.aol.com/news/heres-car-wont-start-cold...

    These let you to get your car warm and running ahead of time, but they don't work well in very cold weather, such as when engine coolant gels or freezes. Jumping the battery.

  7. HVAC control system - Wikipedia

    en.wikipedia.org/wiki/HVAC_control_system

    The program features include time schedules, set points, controllers, logic, timers, trend logs, and alarms. The unit controllers typically have analog and digital inputs that allow measurement of the variable (temperature, humidity, or pressure) and analog and digital outputs for control of the transport medium (hot/cold water and/or steam ...

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