Nitrogen energy storage device adjustment method

Can liquid nitrogen improve turnaround efficiency?

The drawback of these systems is low turnaround efficiencies due to liquefaction processes being highly energy intensive. In this paper, the scopes of improving the turnaround efficiency of such a plant based on liquid Nitrogen were identified and some of them were addressed.

How can a high pressure superheated nitrogen increase refrigeration efficiency?

There is loss of refrigeration up to 150 kJ/kg due to expansion of high pressure superheated Nitrogen. Methods to minimize this loss need to be identified. This will lead to improvement of the cycle turnaround efficiency. 6.

What is the adiabatic efficiency of liquid nitrogen generator?

1. The turbine and the pump in power cycle have adiabatic efficiency of 88%. 2. Specific power consumption for producing liquid nitrogen is 1.5 MJ/kg. 3. No piping and valves were considered. 4. In steady state, the pressure drops and heat in-leak were considered negligible. 5. Generator was considered having a conversion efficiency of 100%.

How is liquid nitrogen produced in an integrated system?

Fig. 1 shows block diagram of an integrated system wherein liquid nitrogen is produced from air at the rate of m ̇ L for time duration of tc and stored in an insulated buffer vessel. From the buffer, liquid nitrogen at a rate of m ̇ P is used to produce work for time duration of td.

What is a block diagram of production and utilization of liquid nitrogen?

Block diagram of production and utilization of liquid nitrogen for power generation. The purpose of the entire exercise is to utilize the low-cost power during lean demand period and produce the power during its high cost during peak demand.

Does Open Rankine cycle improve efficiency of a liquid nitrogen based energy storage system?

The results of the analyses were used to determine the process conditions of a liquid Nitrogen (LN 2) based energy storage system. The discharging system was based on open Rankine cycle. The efficiency of an open Rankine cycle in a power plant is improved by a large extent with reheat cycle .