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HEI Design conditions
- Thread starter roker
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HEI is short for "heat exchanger institute", and they have several standards published on the topic of condensers.
see below link <
I am not familiar with their topics that address air cooled condensers. However, my recollection of the earlier version that was available in 2003 is that it does not adequately afford a conservative design in the case where there is a large steam bypass system discharging into the condenser.
see below link <
I am not familiar with their topics that address air cooled condensers. However, my recollection of the earlier version that was available in 2003 is that it does not adequately afford a conservative design in the case where there is a large steam bypass system discharging into the condenser.
roker...
I believe that the specification is referring to that maximum(reasonable) vacuum value that is required for a condenser.
I know HEI has such a value in either the Liquid Ring Vacuum Pump standard or the STeam Jet Air Ejector Standard.
However, I do not believ that the HEI has a value for an air-cooled condenser
I believe that the specification is referring to that maximum(reasonable) vacuum value that is required for a condenser.
I know HEI has such a value in either the Liquid Ring Vacuum Pump standard or the STeam Jet Air Ejector Standard.
However, I do not believ that the HEI has a value for an air-cooled condenser
Roker,
I haven't seen this spec for many years. However, one aspect of it was that a certain amount of air leakage into the system had to be accounted for in the design of a condenser. My memory tells me that the result was a 80/20 mol fraction mixture of steam and air at the outlet, thus reducing the condensing temperature at that point.
Regards,
Speco
I haven't seen this spec for many years. However, one aspect of it was that a certain amount of air leakage into the system had to be accounted for in the design of a condenser. My memory tells me that the result was a 80/20 mol fraction mixture of steam and air at the outlet, thus reducing the condensing temperature at that point.
Regards,
Speco
Rereading the OP several times, I think it is the air removal equipment that is being referred to HEI standards.
Here is a further link from the site that DaveFitz posted that may give you the leads you need.
Whether you use steam jets or liquid ring vacuum pumps, you should choose a manufacturer that adheres to these design standards.
Their publications are not free, however.
rmw
PS: the maximum vacuum possible in a steam condenser is a function of the hotwell condensate temperature (which, of course is a function of approach to the cooling water - or air - temperature.)
Here is a further link from the site that DaveFitz posted that may give you the leads you need.
Whether you use steam jets or liquid ring vacuum pumps, you should choose a manufacturer that adheres to these design standards.
Their publications are not free, however.
rmw
PS: the maximum vacuum possible in a steam condenser is a function of the hotwell condensate temperature (which, of course is a function of approach to the cooling water - or air - temperature.)
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