The normal liquid flow rate towards a process is 1.5 m 3 /h, its limits being 0.5 m 3 /h and 3 m 3 /h. The flow is subjected to step changes up to 100 l/h. What are the dimensions of the buffer tank...

The normal liquid flow rate towards a process is 1.5 m³/h, its limits being 0.5 m³/h and 3 m³/h. The flow is subjected to step changes up to 100 l/h. What are the dimensions of the buffer tank placed before the process in order to limit the variations at 10 l/h? The pressure upstream of the buffer is 4 bar and downstream 2 bar. Which dimensions will the buffer have if the pressure difference is 0.5 bar only? The controller gain is chosen in such a way that at a flow rate of 0.5 m³/h the tank is empty and at 3 m³/h is full.