{COURSE}309{COURSE}
{LESSON}2{LESSON}
{LESSON TITLE}Reciprocating Compressors{LESSON TITLE}
{TOPIC}3{TOPIC}


{SCENE 1}

{SCENE TITLE}Reciprocating Compressor Operation (Cont.){SCENE TITLE}
{VIDEO SYNC}

{TIMING 1} 0.12 {TIMING 1}

{TEXT 1}Piston is moved back and forth in cylinder by connecting rod and rotating crankshaft{TEXT 1}

{TIMING 2} 6.28 {TIMING 2}

{TEXT 2}Rod end of cylinder is open{TEXT 2}

{TIMING 3} 9.11 {TIMING 3}
{LEVEL OF BULLET 3}2{LEVEL OF BULLET 3}

{TEXT 3}Allows connecting rod to move back and forth while piston travels in and out{TEXT 3}

{TIMING 4} 14.65 {TIMING 4}

{TEXT 4}Head end of cylinder{TEXT 4}

{TIMING 5} 16.3 {TIMING 5}
{LEVEL OF BULLET 5}2{LEVEL OF BULLET 5}

{TEXT 5}Closed {TEXT 5}

{TIMING 6} 17 {TIMING 6}
{LEVEL OF BULLET 6}2{LEVEL OF BULLET 6}

{TEXT 6}Contains intake and discharge valves{TEXT 6}

{TIMING 7} 0 {TIMING 7}

{INSERT VIDEO 7}recip compressor{INSERT VIDEO 7}

{VIDEO WIDTH 7}1280{VIDEO WIDTH 7}
{VIDEO HEIGHT 7}720{VIDEO HEIGHT 7}

{NARRATION}
The piston is moved back and forth in the cylinder by the connecting rod and rotating crankshaft.
The rod end of the cylinder is open, allowing the connecting rod to move back and forth while the piston travels in and out.  
The head end of the cylinder is closed and contains the intake and discharge valves.
{NARRATION}

{SCENE 1}


{SCENE 2}

{SCENE TITLE}Reciprocating Compressor Operation (Cont.){SCENE TITLE}
{VIDEO SYNC}

{TIMING 1} 0.08 {TIMING 1}

{TEXT 1}As piston moves back (toward crankshaft) {TEXT 1}

{TIMING 2} 3.32 {TIMING 2}
{LEVEL OF BULLET 2}2{LEVEL OF BULLET 2}

{TEXT 2}It creates enough negative pressure to permit air at atmospheric pressure to {TEXT 2}

{TIMING 3} 8.05 {TIMING 3}
{LEVEL OF BULLET 3}3{LEVEL OF BULLET 3}

{TEXT 3}Open valves {TEXT 3}

{TIMING 4} 9.03 {TIMING 4}
{LEVEL OF BULLET 4}3{LEVEL OF BULLET 4}

{TEXT 4}Push air into expanding space{TEXT 4}

{TIMING 5} 11.99 {TIMING 5}

{TEXT 5}As piston completes its stroke and starts returning{TEXT 5}

{TIMING 6} 15.51 {TIMING 6}
{LEVEL OF BULLET 6}2{LEVEL OF BULLET 6}

{TEXT 6}Intake valves close{TEXT 6}

{TIMING 7} 0 {TIMING 7}

{INSERT VIDEO 7}recip compressor2{INSERT VIDEO 7}

{VIDEO WIDTH 7}1280{VIDEO WIDTH 7}
{VIDEO HEIGHT 7}720{VIDEO HEIGHT 7}

{NARRATION}
As the piston moves back (toward the crankshaft) it creates enough negative pressure to permit air at atmospheric pressure to open the valves and push air into the expanding space.  
As the piston completes its stroke and starts returning, the intake valves close.
{NARRATION}

{SCENE 2}


{SCENE 3}

{SCENE TITLE}Reciprocating Compressor Operation (Cont.){SCENE TITLE}
{VIDEO SYNC}

{TIMING 1} 0.08 {TIMING 1}

{TEXT 1}As piston returns{TEXT 1}

{TIMING 2} 1.66 {TIMING 2}
{LEVEL OF BULLET 2}2{LEVEL OF BULLET 2}

{TEXT 2}It compresses air in cylinder{TEXT 2}

{TIMING 3} 4.13 {TIMING 3}

{TEXT 3}When it has completed its stroke{TEXT 3}

{TIMING 4} 6.61 {TIMING 4}
{LEVEL OF BULLET 4}2{LEVEL OF BULLET 4}

{TEXT 4}It has compressed air enough to force discharge valves open{TEXT 4}

{TIMING 5} 11.76 {TIMING 5}

{TEXT 5}Air discharged from cylinder is at discharge pressure of compressor{TEXT 5}

{TIMING 6} 0 {TIMING 6}

{INSERT VIDEO 6}recip compressor3{INSERT VIDEO 6}

{VIDEO WIDTH 6}1280{VIDEO WIDTH 6}
{VIDEO HEIGHT 6}720{VIDEO HEIGHT 6}

{NARRATION}
As the piston returns, it compresses the air in the cylinder.  
When it has almost completed its stroke, it has compressed the air to a pressure high enough to force the discharge valves open.  
Air discharged from the cylinder at this point is at the discharge pressure of the compressor.
{NARRATION}

{SCENE 3}


{SCENE 4}

{SCENE TITLE}Reciprocating Compressor Operation — Quiz{SCENE TITLE}
{QUIZ}MULTIPLE CHOICE{QUIZ}
{AUDIO FILE}309-02-03-07Q{AUDIO FILE}

{TIMING 1} 0.14 {TIMING 1}

{TEXT 1}Name two methods used to connect the compressor drive to the compressor.{TEXT 1}

{TIMING 2} 4.85 {TIMING 2}

{OPTION 2}Direct driven and piston driven{OPTION 2}

{TIMING 3} 7.64 {TIMING 3}

{OPTION 3}V-belt driven and rotary driven{OPTION 3}

{TIMING 4} 10.63 {TIMING 4}

{OPTION 4}Piston driven and rotary driven{OPTION 4}

{TIMING 5} 13.73 {TIMING 5}

{OPTION 5}Direct driven and V-belt driven{OPTION 5}

{TIMING 6} 16.91 {TIMING 6}

{ANSWER 6}4{ANSWER 6}

{TIMING 7} 17.39 {TIMING 7}

{TEXT 7}Motors can be connected to compressor directly or by V-belts or speed reducers{TEXT 7}

{NARRATION}
{BEFORE ANSWER}
Please answer the question on the screen.
{AFTER ANSWER}
Motors can be connected to the compressor directly or by V-belts or speed reducers.
{NARRATION}

{SCENE 4}


{SCENE 5}

{SCENE TITLE}Reciprocating Compressor Operation (Cont.){SCENE TITLE}
{AUDIO FILE}309-02-03-08{AUDIO FILE}

{TIMING 1} 0.12 {TIMING 1}

{TEXT 1}Intake and discharge valves may be of feather, disk (plate), or channel design{TEXT 1}

{TIMING 2} 9.25 {TIMING 2}
{LEVEL OF BULLET 2}2{LEVEL OF BULLET 2}

{TEXT 2}Construction differs slightly{TEXT 2}

{TIMING 3} 11.4 {TIMING 3}
{LEVEL OF BULLET 3}2{LEVEL OF BULLET 3}

{TEXT 3}Operation is similar{TEXT 3}

{TIMING 4} 0 {TIMING 4}

{IMAGE 4}309.2-2.png{IMAGE 4}
{IMAGE CREDIT 4}Gardner-Denver Co. Ingersoll-Rand Co.{IMAGE CREDIT 4}

{NARRATION}
Intake and discharge valves, shown in this illustration, may be of the feather, disk (plate), or channel design.
The construction of each valve differs slightly, but the operation of all is similar.
{NARRATION}

{SCENE 5}


{SCENE 6}

{SCENE TITLE}Reciprocating Compressor Operation (Cont.){SCENE TITLE}
{AUDIO FILE}309-02-03-09{AUDIO FILE}

{TIMING 1} 0.15 {TIMING 1}

{TEXT 1}Valve parts include {TEXT 1}

{TIMING 2} 1.28 {TIMING 2}
{LEVEL OF BULLET 2}2{LEVEL OF BULLET 2}

{TEXT 2}Valve seat{TEXT 2}

{TIMING 3} 2.41 {TIMING 3}
{LEVEL OF BULLET 3}2{LEVEL OF BULLET 3}

{TEXT 3}Movable valve{TEXT 3}

{TIMING 4} 3.66 {TIMING 4}
{LEVEL OF BULLET 4}2{LEVEL OF BULLET 4}

{TEXT 4}Guard or stop plate{TEXT 4}

{TIMING 5} 5.78 {TIMING 5}

{TEXT 5}Movable valve is frequently held against seat by spring{TEXT 5}

{TIMING 6} 9.8 {TIMING 6}

{TEXT 6}During operation{TEXT 6}

{TIMING 7} 10.83 {TIMING 7}
{LEVEL OF BULLET 7}2{LEVEL OF BULLET 7}

{TEXT 7}Spring holds valve in contact with seat{TEXT 7}

{TIMING 8} 14.72 {TIMING 8}

{TEXT 8}As air is compressed in cylinder{TEXT 8}

{TIMING 9} 17.08 {TIMING 9}
{LEVEL OF BULLET 9}2{LEVEL OF BULLET 9}

{TEXT 9}It forces valve open{TEXT 9}

{TIMING 10} 18.96 {TIMING 10}
{LEVEL OF BULLET 10}2{LEVEL OF BULLET 10}

{TEXT 10}Air discharges to receiver{TEXT 10}

{TIMING 11} 21.89 {TIMING 11}

{TEXT 11}When piston reverses stroke{TEXT 11}

{TIMING 12} 24.05 {TIMING 12}
{LEVEL OF BULLET 12}2{LEVEL OF BULLET 12}

{TEXT 12}Spring and discharge pressure close valve{TEXT 12}

{TIMING 13} 27.34 {TIMING 13}
{LEVEL OF BULLET 13}3{LEVEL OF BULLET 13}

{TEXT 13}Prevents air from returning to cylinder{TEXT 13}

{TIMING 14} 0 {TIMING 14}

{IMAGE 14}309.2-2.png{IMAGE 14}
{IMAGE CREDIT 14}Gardner-Denver Co. Ingersoll-Rand Co.{IMAGE CREDIT 14}

{NARRATION}
Valve parts include a valve seat, movable valve, and guard or stop plate.  
The movable valve is frequently held against the seat by a spring.  
During operation, the spring holds the valve in contact with the seat.  
As the air is compressed in the cylinder, it forces the valve open, and air discharges to the receiver.  
When the piston reverses its stroke, the spring and discharge pressure close the valve, preventing air from returning to the cylinder.
{NARRATION}

{SCENE 6}


{SCENE 7}

{SCENE TITLE}Reciprocating Compressor Operation — Quiz{SCENE TITLE}
{QUIZ}MULTIPLE CHOICE{QUIZ}
{AUDIO FILE}309-02-03-10Q{AUDIO FILE}

{TIMING 1} 0.14 {TIMING 1}

{TEXT 1}The movable part of a discharge valve is held in place by a{TEXT 1}

{TIMING 2} 4.24 {TIMING 2}

{OPTION 2}spring{OPTION 2}

{TIMING 3} 5.54 {TIMING 3}

{OPTION 3}valve seat {OPTION 3}

{TIMING 4} 7.06 {TIMING 4}

{OPTION 4}stop plate{OPTION 4}

{TIMING 5} 8.64 {TIMING 5}

{OPTION 5}cross head {OPTION 5}

{TIMING 6} 10.77 {TIMING 6}

{ANSWER 6}1{ANSWER 6}

{SCENE 7}