Pre Cool Trane Ga Sws Univ Install For Website

575 views

Published on

Pre-Cooling Technology for Large AC Units

0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total views
575
On SlideShare
0
From Embeds
0
Number of Embeds
58
Actions
Shares
0
Downloads
2
Comments
0
Likes
0
Embeds 0
No embeds

No notes for slide

Pre Cool Trane Ga Sws Univ Install For Website

  1. 1. GA Southwestern State University Pre-Cool System installation
  2. 2. SUMMARY <ul><li>Address problems with a Carrier Air Cooled Chiller at Georgia Southwestern State University </li></ul><ul><li>Machine has had multiple compressor failures </li></ul><ul><li>Extremely high Liquid Line and condensor coil temperatures </li></ul><ul><li>Unable to meet setpoints for AC </li></ul>
  3. 3. EQUIPMENT <ul><li>Carrier GT 100 </li></ul>
  4. 4. ISSUES <ul><li>Three compressor replacements in 18 months </li></ul><ul><li>Liquid line temps exceeding 130 ° </li></ul><ul><li>Condensor temps over 100 ° </li></ul><ul><li>Unable to run more than 3 of the 4 compressors due to cutting off on high head pressures </li></ul><ul><li>Recirculation of condensor exhaust through condensor addressed with sheet metal flashing diverters (pic below) </li></ul>
  5. 5. Before Installation
  6. 6. After Installation
  7. 7. Controls and Water treatment
  8. 8. RESULTS DAY ONE <ul><li>Drop of 10 ° in Supply Chilled Water temp. (From mid 50’s to mid 40’s) </li></ul><ul><li>Return Chilled water temps in mid 50’s </li></ul><ul><li>Prior room temps between 77-80. After install temps at 68-71. </li></ul><ul><li>All four compressors running and cycling </li></ul><ul><li>Drastic reduction in compressor noise due to reduced head pressures </li></ul>
  9. 9. ADDITIONAL <ul><li>Head temps and chilled water supply temps will be trended and monitored </li></ul><ul><li>Additional chillers at site will be selected for future installations </li></ul><ul><li>Follow-up with customer to address any post installation issues </li></ul>
  10. 10. C ONTACT I NFO

×