Me Vasaikar Bholthoae
I take this opportunity to thank the railway department to thank for having recognized the need for better ventilation in the congested and overcrowded local trains of Mumbai and for having done some modification in the ventilation set-up of some of the compartments especially in ladies compartments of the local trains in western railways. The new coaches that are going to be bought newly may have a better and forced ventilation set up but what to do with the existing old and congested coaches let us look at what we can do with the existing system with out spending much cost
The principle of the proposed design is the creation of negative pressure below the roof surface of the train. The expired air is warm and lighter than that of the fresh air, which is cool and denser. Expired air therefore, will moves upward towards the roof. If we can give a little escape energy to this light air (by means of negative pressure) it can easily escape from the roof surface allowing a constant flux of fresh air from the lateral sides (through the windows / gate etc..) towards the roof, which also will carry away all the expired air sneezed water/air droplets ets..). In a nutshell we puncture the dead-air-pocket surfaces and suck off the air by a back suction kindly look at the diagram attached for more details.
The diagram is a self-explanatory in nature for the ease of understanding let us see how it works. A tube originating from the middle of the ceiling of the train is projected from inside of the train compartment to the outside of the compartment both 180 perpendicular to each other the out side tip are shutter closed to allow only exit of air and inlet. These protruding arms will have projecting serrated slits on the sides to allow the passage of air through the sides. Now when the train moves air moves in the opposite direction. Air enters the projected arm through the serrated slits and leaves out of the tubes through the tapering arm. This movement of air will siphon out the expired air from inside the compartment by means of negative pressure that is getting created by the air entering and exiting through the projected arm. Now even while raining, this mechanism can function with out letting the rainwater enter the compartment. The main worry because of which (to my understanding) the efficiency of the current ventilation systems are kept at a very low efficiency. Now there are new troubles that to be tackled if we implement this design that I could foresee.
That is
1) If this entry and exit of air makes resonance and makes lots of noise
2) What happens if the train moves at very high speed?
3) Will it make a stress on the engine..?
At the moment I do not have a solution for the noise.
When the train runs at a higher speed the rate of exhausting can be controlled by means of an aperture operated by a tension-spring. This will be basically a small inverted cone hanged on a spring from the ceiling inside the compartment. When too much of air is being sucked out the cone will get a lift and will control the suction rate. I feel that this is an out of the box thought because it uses an arm out side the compartment…! Thirdly the stress on the engine. Yes! It is definitely is going to add a new stress one the pulling engine but this stress can be looked at the interest on the living beings under stress inside the running machine. Hope some one kind hearted looks at it more critically and do some thing for the stressed out crowds of Mumbai all the best..!!
Pour your constructive criticisms at jkbond2000@yahoo.com
The relevant links to this could be…
edr@rdso.railnet.gov.in, drel@rdso.railnet.gov.in, drc1@rdso.railnet.gov.in, dcomp@rdso.railnet.gov.in, drrm2@rdso.railnet.gov.in, drrm@rdso.railnet.gov.in, drrst@rdso.railnet.gov.in, drmaec@rdso.railnet.gov.in, ddrel@rdso.railnet.gov.in, psedr@rdso.railnet.gov.in, edtk@rdso.railnet.gov.in, dtd1@rdso.railnet.gov.in, dtd2@rdso.railnet.gov.in, dtd3@rdso.railnet.gov.in, dtd4@rdso.railnet.gov.in, dtd5@rdso.railnet.gov.in, edw@rdso.railnet.gov.in, dwwd@rdso.railnet.gov.in, dw1@rdso.railnet.gov.in, dw3@rdso.railnet.gov.in, dw2@rdso.railnet.gov.in, jdwbc@rdso.railnet.gov.in
I take this opportunity to thank the railway department to thank for having recognized the need for better ventilation in the congested and overcrowded local trains of Mumbai and for having done some modification in the ventilation set-up of some of the compartments especially in ladies compartments of the local trains in western railways. The new coaches that are going to be bought newly may have a better and forced ventilation set up but what to do with the existing old and congested coaches let us look at what we can do with the existing system with out spending much cost
The principle of the proposed design is the creation of negative pressure below the roof surface of the train. The expired air is warm and lighter than that of the fresh air, which is cool and denser. Expired air therefore, will moves upward towards the roof. If we can give a little escape energy to this light air (by means of negative pressure) it can easily escape from the roof surface allowing a constant flux of fresh air from the lateral sides (through the windows / gate etc..) towards the roof, which also will carry away all the expired air sneezed water/air droplets ets..). In a nutshell we puncture the dead-air-pocket surfaces and suck off the air by a back suction kindly look at the diagram attached for more details.
The diagram is a self-explanatory in nature for the ease of understanding let us see how it works. A tube originating from the middle of the ceiling of the train is projected from inside of the train compartment to the outside of the compartment both 180 perpendicular to each other the out side tip are shutter closed to allow only exit of air and inlet. These protruding arms will have projecting serrated slits on the sides to allow the passage of air through the sides. Now when the train moves air moves in the opposite direction. Air enters the projected arm through the serrated slits and leaves out of the tubes through the tapering arm. This movement of air will siphon out the expired air from inside the compartment by means of negative pressure that is getting created by the air entering and exiting through the projected arm. Now even while raining, this mechanism can function with out letting the rainwater enter the compartment. The main worry because of which (to my understanding) the efficiency of the current ventilation systems are kept at a very low efficiency. Now there are new troubles that to be tackled if we implement this design that I could foresee.
That is
1) If this entry and exit of air makes resonance and makes lots of noise
2) What happens if the train moves at very high speed?
3) Will it make a stress on the engine..?
At the moment I do not have a solution for the noise.
When the train runs at a higher speed the rate of exhausting can be controlled by means of an aperture operated by a tension-spring. This will be basically a small inverted cone hanged on a spring from the ceiling inside the compartment. When too much of air is being sucked out the cone will get a lift and will control the suction rate. I feel that this is an out of the box thought because it uses an arm out side the compartment…! Thirdly the stress on the engine. Yes! It is definitely is going to add a new stress one the pulling engine but this stress can be looked at the interest on the living beings under stress inside the running machine. Hope some one kind hearted looks at it more critically and do some thing for the stressed out crowds of Mumbai all the best..!!
Pour your constructive criticisms at jkbond2000@yahoo.com
The relevant links to this could be…
edr@rdso.railnet.gov.in, drel@rdso.railnet.gov.in, drc1@rdso.railnet.gov.in, dcomp@rdso.railnet.gov.in, drrm2@rdso.railnet.gov.in, drrm@rdso.railnet.gov.in, drrst@rdso.railnet.gov.in, drmaec@rdso.railnet.gov.in, ddrel@rdso.railnet.gov.in, psedr@rdso.railnet.gov.in, edtk@rdso.railnet.gov.in, dtd1@rdso.railnet.gov.in, dtd2@rdso.railnet.gov.in, dtd3@rdso.railnet.gov.in, dtd4@rdso.railnet.gov.in, dtd5@rdso.railnet.gov.in, edw@rdso.railnet.gov.in, dwwd@rdso.railnet.gov.in, dw1@rdso.railnet.gov.in, dw3@rdso.railnet.gov.in, dw2@rdso.railnet.gov.in, jdwbc@rdso.railnet.gov.in
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