What is cold start and hot start?

Cold Star start refers to starting the CPU from power off, Current configuration is discarded and program processing begins again with the initial values. Hot start: Hot start refers to restarting the CPU without turning the power off, Program processing starts once again where Retentive data is retained.

What is hot startup?

Hot start. A hot start refers to when your app’s process is already running in the background. This makes it a lot faster than a cold start because the app’s activity is already present in memory.

What cold start means?

When your car’s engine is colder than its normal operating temperature and you start it, that’s a cold start. That means that every time you start your car after it sits for a long period of time, you are having a significant impact on the air quality.

What is cold start in gas turbine?

Cold start-up – This procedure is followed when the turbine is in stop/stand by condition for more than 20 hours. In this barring gear will be running for 4 hours during which warming of the turbine (Turbine temperature increasing) will be done by raising the vacuum through gland sealing.

What is a cold start up?

What is App cold start?

Cold start. A cold start refers to an app’s starting from scratch: the system’s process has not, until this start, created the app’s process. Cold starts happen in cases such as your app’s being launched for the first time since the device booted, or since the system killed the app.

What happens during cold start?

Summary: During cold-start, a car engine emits far more particulate matter and other pollutants than during warm conditions. This is because a cold catalytic converter is much less efficient at low exhaust gas temperatures.

What is meant by hot start-up of a turbine?

Hot start-up – This procedure is followed when the turbine was bought to its barring condition, and in that state the turbine is for less than 6 hours and the casing temperature is maintained. In this barring gear will be running & gland sealing will be lined up for warming up.

What is the difference between warmwarm and hot start duration?

Warm and hot start duration Warm starts: •Phase 2 time is reduced because it is possible to warm-up the ST more quickly Hot starts: •Phase 2 almost completely eliminated because ST is still hot •ST loading can be done with higher gradient Sample of approximate time (in minutes) Phase 1 Phase 2 Phase 3

What determines the temperature of a steam turbine’s start?

The range of temperatures for each type of start varies depending on the manufacturer of the turbine and the material of the rotor. In some cases, the turbine manufacturer will correlate the type of start to the number of hours from the time that the steam turbine was shut down.

What is the difference between cold start and steady state operation?

value, which for a cold start is the same for whole turbine, to a value in steady- state operation, which is highest in the inlet sections of the turbine. For example, during a cold start of a 360 MW machine, the inlet steam temperature at the beginning of start-up is 350–400oC and increases to 535oC in steady-state.