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Post by Shawki Shlemon on Sept 12, 2006 9:21:36 GMT
Hi George
Pressure setting controls when steam release will begin , in other words boiler operating pressure.The size of the orifice will determine how much steam can escape at that pressure . Now we come to the top holes , the total area of those holes must be greater than the area of the orifice to allow for expanding steam.Unfortunately these details are not in the code. Let me assure you, you are not the only one who has faced this problem.It has occurred in our club more than once .I made a table of areas of holes from 1/16 to 5/8 , when I am making something and want to find out the number of holes I need for certain area . it is a matter of looking at the table .
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Post by spurley on Sept 12, 2006 12:02:42 GMT
Hi Shawki Any chance you could send me a copy of this table please? Or better still post it here for the benefit of all!  Cheers Brian |
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Post by Shawki Shlemon on Sept 14, 2006 9:43:51 GMT
Hi Spurley and All
The table is simple just makes live easy so that I do not calculate all the time . Here it is
DIAMETER AREA DIAMETER AREA DIAMETER AREA
1/16 = 0.0032 5/64 = 0.0048 3/32 = 0.0068
7/64 = 0.0095 1/8 = 0.0125 9/64 = 0.0153
5/32 = 0.0191 11/64= 0.0232 3/16 = 0.0271
13/64= 0.0323 7/32 = 0.0376 15/64= 0.0437
1/4 = 0.0490 17/64= 0.0555 9/32 = 0.062
5/16 = 0.076 11/32= 0.092 3/8 = 0.1098
13/32= 0.1295 7/16 = 0.150 15/32= 0.172
1/2 = 0.1963 9/16 = 0.248 5/8 = 0.360
All above dimensions are in imperial ( inches ) .
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Post by Shawki Shlemon on Sept 14, 2006 9:48:39 GMT
Hi All
It is me again regarding the post above , I typed it in table form but after posting, it changed to as you see it .
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Post by GeorgeRay on Sept 14, 2006 19:48:49 GMT
Shawki It is possible to set it up as a table on this bulleting board but it takes a long time to do. the chequer board above the message window when you are composing your message is what you need to use and then you get placemarkers in your message between which you have to place the information. It can be quite tedious and is not at all user friendly. | DIAMETER | AREA | DIAMETER | AREA | DIAMETER | AREA | | 1/16 | 0.0032 | 5/64 | 0.0048 | 3/32 | 0.0068 | | 7/64 | 0.0095 | 1/8 | 0.0125 | 9/64 | 0.0153 | | 5/32 | 0.0191 | 11/64 | 0.0232 | 3/16 | 0.0271 | | 13/64 | 0.0323 | 7/32 | 0.0376 | 15/64 | 0.0437 | | 1/4 | 0.0490 | 17/64 | 0.0555 | 9/32 | 0.062 | | 5/16 | 0.076 | 11/32 | 0.092 | 3/8 | 0.1098 | | 13/32 | 0.1295 | 7/16 | 0.150 | 15/32 | 0.172 | | 1/2 | 0.1963 | 9/16 | 0.248 | 5/8 | 0.360 |
Its taken about 5 minutes to transfer your info into the above table, which I did just to show you how it would look. |
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Post by Shawki Shlemon on Sept 15, 2006 9:29:31 GMT
Hi George You did what I failed to do ,thank you , just a reminder for the benefit of all , you missed the top line . It is strange the topic has changed from boilers to whatever !!!  |
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Post by Shawki Shlemon on Sept 15, 2006 10:38:16 GMT
Hi George I tried for practice for over 2 hours and could not do it !!!!! How did you do it? beats me  |
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Post by GeorgeRay on Sept 15, 2006 20:23:43 GMT
Shawki The top line is there now. I had actually included it but erased one of the table tags which made it invisible. I cant actaully show you on the board but I'll try to send you a PM with the explanation.  |
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Post by Shawki Shlemon on Sept 16, 2006 9:51:25 GMT
| diameter | area | diameter | area | | 1/16 | 0.0032 | 5/64 | 0.0048 |
Hi George Thank you, I have done it and copied your instructions for future use. |
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