Morning? Have done a day's work already! DI works best at cold. The normal resins are recommended at <50°C but are ok up to ~75°C, but less efficient. Hot-water resins just have a different plastic matrix which I surmise cannot be as good as 'normal' resins, otherwise there would be no raison d'être for the latter. Many have a heat exchanger, so that the hot water from the tank reheats the cooler water having passed through the resin columns, thus saving energy. Brian On 28/04/2011 15:28, Steve Gregory wrote: > Morning all, > > > > I have a question about the resin beads inside a mixed bed deionizing tank. > I know they're called cation and anion resin beads, but I don't know much > about the physical properties of them. > > > > We have a carbon bed tank and a hot mixed bed tank to deionize the water for > our inline cleaner. I run the wash tank at 130 F., but I know the water will > cool a little before it gets to the mixed bed. We were asked when we first > had the DI system installed what temperature we would be running our wash > at, and we told them 130 F., they said that we would need a hot mixed bed. > > > > Okay, so we need a hot mixed bed, but what is the real difference in the > resin beads between a standard mixed bed and a "hot" mixed bed? > > > > What happens when you run 130 F. water through a mixed bed that doesn't have > "hot" resin beads? Do they swell up, or break down? Or is it that just the > quality of the DI water will be affected? > > > > Steve > > > > > > ______________________________________________________________________ > This email has been scanned by the MessageLabs Email Security System. > For more information please contact helpdesk at x2960 or [log in to unmask] > ______________________________________________________________________ > > --------------------------------------------------- > Technet Mail List provided as a service by IPC using LISTSERV 16.0 > To unsubscribe, send a message to [log in to unmask] with following text in > the BODY (NOT the subject field): SIGNOFF Technet > To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL) > To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest > Search the archives of previous posts at: http://listserv.ipc.org/archives > For additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815 > ----------------------------------------------------- > ______________________________________________________________________ This email has been scanned by the MessageLabs Email Security System. For more information please contact helpdesk at x2960 or [log in to unmask] ______________________________________________________________________ --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 16.0 To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL) To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest Search the archives of previous posts at: http://listserv.ipc.org/archives For additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815 -----------------------------------------------------