Latest revision as of 20:01, 19 May 2025

Compressed air energy storage or gravity water storage costs 10x less than any other based on 100 year vs 10 year lifetime of the system.

About

'Only 10% to 20% of the energy required to generate compressed air ever reaches the point of use' - [1]
- This could be true if compressor efficiency is 60% and tool efficiency is 20-30% for standard air tools.
7-8 hp input to compressor yields 1 hp at the air tool shaft. [2]

Losses:

Work to compress, thus energy stored in isothermal conditions - is W = P1V1 * ln(P2/P1) [3]
- Units of Pascals, Meters, Joules.
- W=2E7 Pa * 0.05 cubic meters * ln(200)=5.3MJ=1.5 kWhr
- Ok.
Adiabatic compression - [W = P1V1 - P2V2 / (1 - γ)] [4]
Let's take industrial gas cylinders with K, T, 3K, 6K standards - 300 cu ft for T [5]. 2200-2600 psi is the standard, but also 3000 PSI and 6000 PSI.
T type - 300 cf

@@ Line 2: / Line 2: @@
 =About=
 *'Only 10% to 20% of the energy required to generate compressed air ever reaches the point of use' - [https://www.des.nh.gov/sites/g/files/ehbemt341/files/documents/2020-01/energy-efficiency-compressed-air.pdf]
+**This could be true if compressor efficiency is 60% and tool efficiency is 20-30% for standard air tools.
+*7-8 hp input to compressor yields 1 hp at the air tool shaft. [https://fluidpowerjournal.com/air-tool-is-inefficient/]
+[[File:compressedair.jpg|400px]]
+Losses:
+[[File:compressedairlosses.jpg|400px]]
 =Calculations=