How does a compressor work in thermodynamics?

A compressor is a mechanical device that increases the pressure of a gas by reducing its volume. Compressors are similar to pumps: both increase the pressure on a fluid and both can transport the fluid through a pipe. As gases are compressible, the compressor also reduces the volume of a gas.

How do you calculate work done by a compressor?

For compressors work is calculated by dividing the enthalpy difference (Δht), from (8), by a mechanical efficiency ( η m c = 97 % ) . Polytropic head (Δhp) is calculated using the difference in entropy (ΔS) and temperature (ΔT), as shown in (9).

Does a compressor increase enthalpy?

Since no external heat is being added to or extracted from the compressor during the pressure increase, the process is isentropic. From the conservation of energy, the compressor work per mass of airflow CW is equal to the change in the specific enthalpy ht of the flow from the entrance to the exit of the compressor.

What is PV diagram of air compressor?

The function of a compressor is to take a definite quantity of fluid usually gas and most often air and deliver it to the required pressure. The figure shows the theoretical indicator diagram i.e., the P-V diagram of a single-stage reciprocating compressor without clearance.

What is compression ratio in thermodynamics?

The compression ratio, CR, is defined as the ratio of the volume at bottom dead center and the volume at top dead center. It is a key characteristics for many internal combustion engines. In the following section, it will be shown that the compression ratio determines the thermal efficiency of used thermodynamic cycle of the combustion engine.

What is the best 12 volt air compressor?

Top 10 Best Portable 12v Air Compressor Reviews 1. MasterFlow MF-1050 Air Compressor 2. Master Flow MF-1040 Cyclone High Volume Portable Air Compressor 3. ViAir 150 PSI High Flow Air Source Kit 4. Slime Pro Power Heavy Duty 12 Volt Tire Inflator 5. Viair 00088 88P Portable Air Compressor 6. Kensun YS-205 (Home 110V) Portable Air Compressor

What is the efficiency of a compressor?

Typical Efficiency for Compressor. Compressor efficiency is very much subject to compressor type, design, etc. It possibly range from 50% to 90%. Each compressor from different manufacturer may have different efficiency.

What is the compression ratio of a compressor?

Compressor manufacturers can tell you what the maximum compression ratio is for a specific compressor, but an accepted rule is no more than a 10:1 compression ratio.