Various cooling and heating are equipped with a built-in thermostat. Examples are refrigerator, air conditioning, aquarium heater, toaster, oven, gas stove, iron. For a local temperature outside the main room in central heating systems using device valves that are mounted to radiator (zone control thermostat). This can be done either mechanically or electronically. The flow of water through the radiator becomes larger as the temperature is lower than the set point, and decreases as the temperature rises.
It is stabilized at a constant temperature by means of a linear circuit consists of an amplifier driven by a thermal sensor which sends the appropriate current to a resistor, to keep in balance the temperature of cell containing the quartz oscillator. Using a digital circuit is possible to create a curve optimal for the attainment of thermal predetermined point.
The effect of heater is switched on the room temperature in recent days is stored in a memory effect. When the indoor environmental conditions (eg open doors that are normally closed) or outdoors (by weather changes) change drastically, it will take some days before device optimally anticipates the need for heat.
Today we use more electronic devices that have a reliability of more comparable to Mercury models, more accurate, and pose fewer environmental problems in later life. Most of time, the electronic models detect variations in temperature using a thermistor, that is to say a resistance which varies with temperature.
A recent development is the electronic device with built-in clock. This allows the time-dependent temperature control in room, by which one can not forget to faucet at a lower temperature when it does not have to be in room. These can therefore save money. A thermostat is device designed to maintain a constant temperature for a given system through automatic adjustment.
Clock device - is equipped with a timer and / or another form of detection to observe that the occupant has left the room and bring the room after a set period of time at a lower temperature. The energy savings can be 20% or even 50% when used in recreational where the occupation and the heating behavior is very variable.
The first electric device was created in 1883 by Warren S. Johnson. Technologies developed subsequently included mercury thermometers with electrodes inserted directly through the glass, so when the contacts a certain temperature, they would be closed by mercury. Example of this device is very accurate in certain temperature ranges. These can then control the heating or cooling apparatus using: Direct mechanical, control, electrical signal and pneumatic signal.
In event that use is made of a conventional, non-modulating device (on / off control) is in better models often use is made of one or other type of anticipation, that is to say that device switches off before the set temperature is reached . This is done to avoid too large fluctuations in room temperature by pressing the on / off control behavior prevent device. After all, it takes time to install and space to warm up.
It is stabilized at a constant temperature by means of a linear circuit consists of an amplifier driven by a thermal sensor which sends the appropriate current to a resistor, to keep in balance the temperature of cell containing the quartz oscillator. Using a digital circuit is possible to create a curve optimal for the attainment of thermal predetermined point.
The effect of heater is switched on the room temperature in recent days is stored in a memory effect. When the indoor environmental conditions (eg open doors that are normally closed) or outdoors (by weather changes) change drastically, it will take some days before device optimally anticipates the need for heat.
Today we use more electronic devices that have a reliability of more comparable to Mercury models, more accurate, and pose fewer environmental problems in later life. Most of time, the electronic models detect variations in temperature using a thermistor, that is to say a resistance which varies with temperature.
A recent development is the electronic device with built-in clock. This allows the time-dependent temperature control in room, by which one can not forget to faucet at a lower temperature when it does not have to be in room. These can therefore save money. A thermostat is device designed to maintain a constant temperature for a given system through automatic adjustment.
Clock device - is equipped with a timer and / or another form of detection to observe that the occupant has left the room and bring the room after a set period of time at a lower temperature. The energy savings can be 20% or even 50% when used in recreational where the occupation and the heating behavior is very variable.
The first electric device was created in 1883 by Warren S. Johnson. Technologies developed subsequently included mercury thermometers with electrodes inserted directly through the glass, so when the contacts a certain temperature, they would be closed by mercury. Example of this device is very accurate in certain temperature ranges. These can then control the heating or cooling apparatus using: Direct mechanical, control, electrical signal and pneumatic signal.
In event that use is made of a conventional, non-modulating device (on / off control) is in better models often use is made of one or other type of anticipation, that is to say that device switches off before the set temperature is reached . This is done to avoid too large fluctuations in room temperature by pressing the on / off control behavior prevent device. After all, it takes time to install and space to warm up.
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