If I understand what you are asking, you are describing a steam cycle system.
First water is pressurized and pumped via a condensate pump (the water is called condensate. This condensate normally goes through a heater to increase efficiency, then is further pressurized by feed pumps. The water (now called Feed Water) is then sent through a control valve and into a steam generator (basically a large tea kettle). The control valve maintains constant water level in the generator within a certain range. The water in the generator is heated by various ways (Oil, Coal, Nuclear, Geothermal or even Solar reflectors). The steam produced is directed to do whatever work the system is designed to do, either heating, electricity generation, propulsion (steam locomotive / Steam powered ship). Once the steam has been used to produce work, it is at a lower temperature and pressure than it was in the generator. This low pressure steam can be directed to the condensate heater (as described above) then to a condenser, or straight to the condenser. The condenser uses various ways to further cool the steam; (water, cooling towers ;those big towers at nuclear power plants) and the resulting condensate is collected to be reused. The reason why it is called a closed loop system is that the water is re-used time and again in a loop. The water is only added to make up for leaks in the system (thus it is called make up water).
traffic signal,blind person,
A SYSTEM is any active device if left as open loop it will saturate one way or the other if the gain is ample. To control a system it must have some feedback to determine ts linear operating capabilities. As an example an airplane taking off at las Vegas the cabin will be pressurised to -1000 feet from the ground and maintain a rate of climb to even 50.000 feet with a delta of 17 PSI The cabin pressure as a system will maintain this delta by close loop control otherwise we will need oxygen if flying. INTERESTING?
whenever steam is utilised as heating media, steam condensate is produced.This steam condensatecan be utilsed for steam generation at some other location and needs to be pumped, for pumping you need some intermediate storage of this condensate. For storing it we use condensate pot whose level can be controlled.
A servo drive is any motor controller which uses a closed feedback loop to monitor the motors speed. This is normally accomplished through the use of an encoder or resolver.
Servomechanism is the combination of set of devices using for precision activities like movement, triggering, aiming by acting in a closed loop system by comprising an input device, a processor, a module to analyse feedback, prime mover like servomotor, a sensor for giving feedback. In each incremental motion a position feedback is sent to processor to analyse to deliver an instruction to module such that position value - feedback incremental value is the current position which will loop until target value become null.
closed loop system
Sensitivity of a closed loop system for a change in the system gain is 1/(1+GH)
A Closed loop system basically will have a feedback which enables the rectification of the error in the main process,whereas it is not possible in an open loop system
yes
yes
The closed loop control refers to a system whereby an input forcing function is usually determined in part by the system response.
Brown bear have a close circulation system
open (in terms of thermo chemistry) ! It cannot be proved with science yet! BUT WHEN ONE TOUCHES SOMEONE, LOOKS THEM IN THE EYE, so forth one feels the exchange of energy(emotions). they are being effected by the surrounding !
Open loop (single cycle) involves a break requiring a restart, easily adapted to closed loop.
In a closed loop system the gain without the feed back loop being closed is called open loop gain!!! e.g if forward gain is "A" and feed back factor is "B" then open loop gain is "AB" and closed loop gain will be [A/(A+B)]
its costly than open loop system and bulky, too.
Yes it is