1 / 20

Can the Lowly Stop-valve Sink Your Best Water Conservation Efforts?

Can the Lowly Stop-valve Sink Your Best Water Conservation Efforts?. Authors:. Paul Woods, D. E. D., RA Joon Sub Lee, MSCM Jiyoung Jung, MSCM Shriram Joshi, MSCM Gunhui Jo, MSCM student Amarendra Chaugule, MSCM student Texas A&M University College Station, Texas. Study Objective.

thetis
Download Presentation

Can the Lowly Stop-valve Sink Your Best Water Conservation Efforts?

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Can the Lowly Stop-valve Sink Your Best Water Conservation Efforts?

  2. Authors: Paul Woods, D. E. D., RA Joon Sub Lee, MSCM Jiyoung Jung, MSCM Shriram Joshi, MSCM Gunhui Jo, MSCM student Amarendra Chaugule, MSCM student Texas A&M University College Station, Texas

  3. Study Objective • Determine if the stop-valve has a significant effect on the liters per flush of flush-valve water closets.

  4. Importance • If the stop valve adjustment affects gallons/flush, then this should be part of any building commissioning process.

  5. What is a stop valve?

  6. How can it be adjusted?

  7. Subject Building

  8. Typical Restroom Plans

  9. Sample Selection • 16 Automatic flush-valve water closets • 10 from women’s restrooms • 6 from men’s restrooms

  10. Experimental Setup

  11. The Data • An observational unit is the water closet, automatic flush valve and stop valve combination. • The population of interest is all the automatic flush-valve water closets in Langford Architecture Building A

  12. Variables • stop-valve position measured in quarter of turn increments from the full open position • liters per flush

  13. Number of Observations • 5 observations per stop valve position per fixture • The number of valve turns from full open to full closed ranged from 2.75 to 3.25 per fixture

  14. Table 1. Maximum and minimum flow Fixture 1w1 1w3 1w2 1m1 4w2 4m2 4m1 2m2 % Spec 164% 139% 151% 155% 145% 127% 134% 143% Max 9.84 8.34 9.06 9.3 8.68 7.64 8.03 8.59 Min 4.47 4.5 4.07 3.45 .75 2.37 2.6 3.17 % Spec 74% 75% 68% 58% 12% 39% 43% 53% Findings

  15. Avg all Fixture 2w3 2w2 2w1 2m1 3w4 3w1 3m2 3w3 fixtures % Spec 169% 129% 83% 113% 150% 143% 151% 146% 145% Max 10.11 7.74 4.98 6.79 8.99 8.58 9.03 8.75 8.68 Min 4.57 3.83 1.53 3.38 2.91 3.18 3.41 3.61 3.17 % Spec 76% 64% 25% 56% 48% 53% 57% 60% 53% Findings (cont)

  16. Findings (cont)

  17. Conclusions and Recommendations The conclusion of this study is that the stop-valve position alone could increase or decrease water consumption for flush-valve fixtures in office buildings by 50%. The potential magnitude of this effect requires that rigorous methods be developed to insure that this valve is set properly

  18. Questions?

More Related