Important Terms

1. Suction pressure.  It is the absolute pressure of refrigerant at the inlet of a compressor. 
2. Discharge pressure.  It is the absolute pressure of refrigerant at the outlet of a compressor. 
3. Compression ratio (or pressure ratio).  It is the ratio of absolute discharge pressure to the absolute suction pressure. Since the absolute discharge pressure is always more than the absolute iuction pressure, therefore, the value of compression ratio is more than unity.

Read More

How to wiring window air condition

How to wiring window air condition compressor , fan motor, to multi capacitor .
we will discuss How to connect PCB board to compressor and fan motor we will discuss
all kinds of the wiring on this video so this video is most helpful for the new students.
so watch this video and to know how to wiring the air condition compressor wiring
fan motor wiring to the multi capacitor and we will discuss how to supply why are relay
to the compressor this video is most helpful for the new  students who want to know how
to work the compressor and wiring so please watching this video and to know how to wiring
the window air conditioner

Read More

Window air condition PCB board wiring

Window air condition PCB board wiring this video is totally helpful for know the component of the PCB board and how the PCB board work we will discuss about the connection of the PCB board like sensor blower motor Sewing water power supply and how to connect the all types the wiring 2 PCB board and how to connect the sensor the blower motor testing motor and excetra so this video is so helpful for new students to know how to connect the PCB board to the compressor supply and motor supply and lower motor supply and excetra so watch this video and to know how to connect the PCB board

Read More

L R A ( Lock Rotor Amps ) HINDI

What is LRA?  We discuss about LRA  this is the most important to know what is the LRA
and how we know the TON of the compressor So LRA is helping to know The compressor
Ton so there is a formula to know the compressor Ton so watch this video and to know how to
know the compressor TON  this video is so helpful for no the value of the compressor is how
much done so we discuss about the LRA So watch this

Read More

Gas charging ,R410A R22 R32 pressures, - HINDI

This video is helping to know  identify the gas in the  air condition unit and what kinds of the pressure
we will maintain to the air condition. We will discuss on this video to R22 gas R410a gas and
R32 gas and etcetera so watch this video and to know the pressure we maintain on the
air condition and how we identify which gas is in the air condition so what this video

R-22

1. Standing pressure              -                150 PSI
2. Saction pressure                -                 60 TO 70 PSI
3. Discharge pressure           -                 250 TO 300

-------------------------------------------------------------------------------

R-410A

1. Standing pressure            -                  260 PSI
2. Saction pressure               -                 120 TO 130 PSI
3. Discharge pressure           -                 450 TO 500

-------------------------------------------------------------------------------

R-32

1. Standing pressure              -                260 PSI
2. Saction pressure                 -               120 TO 130 PSI

-------------------------------------------------------------------------------

R-290

1. Standing pressure              -                125  PSI
2. Saction pressure                -                 65 PSIG
3. Discharge pressure           -                 275 TO 300

-------------------------------------------------------------------------------

R-417

1. Standing pressure              -                140 PSI
2. Saction pressure                -                 65  PSI
3. Discharge pressure           -                  261 PSI

-------------------------------------------------------------------------------

Read More

Formula for finding the piston displacement of a compressor

Compressor can be calculated as follows:-

Where:-

V = Volume in cubic feet. 

D = Diameter of cylinder in inches. 

S = Length of stroke in inches. 

N = Number of cylinders. 

R = Revolution per minute (R.P.M.) 

The part of the cylinder volume can be calculated by multiplying the cylinder bore

 by the length of stroke. Now, if it is multiplied by number of cylinders and

revolution per minute of the compressor, the piston wsplacernent can be fonrid out. 

Read More

LAWS OF REFRIGERATION

The laws upon which the theory of refrigeration is based and where they find their applications in refrigeration system.

• Heat can be converted into work and work into heat. This law that, "heat can be converted into work" applies in the generator of an absorption refrigerating machine and, "work can be converted into heat" finds its application in the compressor of a mechanical refrigeration system. 
•  If pressure of a gas be raised and temperature lowered, it will change into its liquid state. This law applies in the condenser of a mechanical refrigeration system. 
•  Under reduced pressure the liquid changes into its vapour state quickly by taking the latent heat from the adjoinings. This law takes place in the evaporator of a refrigeration system. 
•  Heat generally flows from a body from higher temperature to lower temperature. law applies when the term refrigeration is used. The heat flows towards the 'diem from the substance is to be cooled. 

Read More