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Blank Damper Schedule - PECI

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Blank Damper Schedule - PECI Powered By Docstoc
					Damper                                   Unit or                            Nominal Size               Blade Characteristics
Number                               System Served                         Height Width              Blade          Blade
                                                                           inches inches           Orientation      Design
                                                                                                    (Note 1)       (Note 2)




Notes
1, Vertical or horizontal. Vertical blades to have thrust bearings.
2. Flat plate, airfoil, or curtain, parallel or opposed blade where applicable
3. Wide open, including velocity conversion losses associated with any blank-off plates
4. Basis of scheduled selection for the scheduled valve. Equivalent makes and models as allowed by the specification will also be acceptable.
5. Based on the damper performance curves published in ASHRAE and the indicated system static pressure.
6. Modulating control, two position control, smoke, fire, cobination smoke/fire, backdraft, etc.
7. This is the position the damper will go to upon loss of control power.
8. This is the range of input signal that will cause the damper to go from its fully closed position to its fully open position.
                                                                      Control Damper Schedule
                                                                   Damper Performance Data
                    Design            Leakage                                    Sizing
                  Flow Rate      Rate       Pressure     Target     Target   Target        Basis (Note 5)
                     cfm          cfm      difference      ΔP      Velocity  alpha
                              per sq.ft.     in.w.c.     in.w.c.     fpm    (Note 5)
                              of damper                 (Note 3)
                                                                                          System          ΔP
                                                                                                        in.w.c.




l also be acceptable.
                                                     Actuator Data
 Type      Manufacturer/ Action Failure Type   Power    Range Quantity Location
(Note 6)   Model (Note          Position               (Note 8)        (Facing
                4)              (Note 7)                               with the
                                                                       air flow)
                Comments
Manufacturer/
Model (Note
     4)
                                                                                                     Control Damper Schedule - Dampers                                                                                                                                                                          Control Damper Schedule - Actuators
Damper                  Unit or        Nominal Size                Blade Characteristics                                                                              Damper Performance Data                                                                                                                          Actuator Data                          Comments
Number                  System         Height Width                 Blade       Blade                       Design                 Leakage                                     Sizing                                                  Type           Manufacturer/ Action                   Failure    Type Power      Range Quantity Location Manufacturer/
                        Served           (in.)        (in.)     Orientation             Design               Flow            Rate      Pressure        Target Target     Target                       Basis (Note 5)                (Note 6)          Model (Note 4)                         Position                  (Note 8)        (Facing Model (Note 4)
                                                                 (Note 1)              (Note 2)              Rate             cfm      differenc         ΔP    Velocity alpha                                                                                                                (Note 7)                                  with the
                                                                                                             cfm              per      e in.w.c.       in.w.c.   fpm    (Note 5)                                                                                                                                                       air flow)
                                                                                                                             sq.ft.                   (Note 3)
                                                                                                                                                                                                     System           ΔP
                                                                                                                                                                                                                    in.w.c.
AHU1-                 AHU1 Min              6           32        Horizontal           Flat plate,           3,000             10          1.4            0.48         2,000         Note 12         Note 12        Note 12 Two Position                Ruskin CD-35              NC          Closed    Pneu.    Air    Note 9    1     Note 10    Note 11
MinOA                   OA                                                              parallel
AHU1-OA               AHU1 OA              12           42        Horizontal           Flat plate,           7,000             10          1.4            0.48         2,000           5-10           Supply           3.5        Modulating            Ruskin CD-35              NC          Closed    Pneu.    Air    Note 9    1     Note 10    Note 11
                                                                                        parallel
AHU1-RA                AHU1                12           42        Horizontal           Flat plate,           7,000             10          1.4            0.48         2,000           5-10           Supply           3.5        Modulating            Ruskin CD-35              NC          Closed    Pneu.    Air    Note 9    1     Note 10    Note 11
                      Return Air                                                        parallel
AHU1-RelA              AHU1                48           48        Horizontal           Flat plate,           7,000             10          1.4            0.01           438          10-20        Max. bldg.          0.1        Modulating            Ruskin CD-35              NC          Closed    Pneu.    Air    Note 9    1     Note 10    Note 11
                      Relief Air                                                        parallel                                                                                                    press.
Notes
1, Vertical or horizontal. Vertical blades to have thrust bearings.
2. Flat plate, airfoil, or curtain, parallel or opposed blade where applicable
3. Wide open, including velocity conversion losses associated with any blank-off plates
4. Basis of scheduled selection for the scheduled valve. Equivalent makes and models as allowed by the specification will also be acceptable.
5. Based on the damper performance curves published in ASHRAE and the indicated system static pressure.
6. Modulating control, two position control, smoke, fire, cobination smoke/fire, backdraft, etc.
7. This is the position the damper will go to upon loss of control power.
8. This is the range of input signal that will cause the damper to go from its fully closed position to its fully open position.
9. To be coordinated by the control contractor during shop drawing development as necessary to provide the required control sequence.
10. To be coordinated by the control contractor during coordination drawings and shall include damper installation details (sections and elevations at the damper location) in their submittal.
11. To be coordinated by the control contractor based on the final damper selection and their product line. Rating shall be as required to ensure that the design leakage rate is achieved as well as to ensure that the necessary operating torque is provided under all operating modes.
12. Match economizer damper pressure drop at design flow.
1400 SW 5th Ave, Suite 700, Portland, Oregon 97201 (503) 248-4636 FAX: (503) 295-0820 E-Mail: peci@peci.org Web Site: www.peci.org
Engineering Calculation
Date:                March 10, 2003
Project Name:        LBNL PIER FT Guide
Project Number:          890
Engineer:                DAS
Assumptions
                    1. See the graph tabs for damper characteristic curves.
                    2.                                           Unit capacity -         10,000 cfm
                    3.                         System static pressure rating -             3.50 in.w.c.
                    4.                             Economizer damper design -           Parallel (to allow directional control to promote mixing)
                    5.                    Economizer target alpha maximum -                   10              Flow at 50% damper stroke -               76%
                    6.                     Economizer target alpha minimum -                   5              Flow at 50% damper stroke -               60%
                    7.                         Minimum outdoor air quantity -             3,000 cfm
                    8.         Flow for sizing economizer and relief dampers -            7,000 cfm
                    9.               Damper make and model used for sizing -             Ruskin CD 35
                  10. Maximum building pressure for relief damper sizing -                  0.10 in.w.c.
                   11.                                   Relief damper design -        Opposed (to allow better alpha at lower pressrue drop)
                  12.                     Economizer target alpha maximum -                  20               Flow at 50% damper stroke -               62%
                  13.                      Economizer target alpha minimum -                  10              Flow at 50% damper stroke -               48%



First pass, Economizer damper sizing (return and outdoor air)

                                     Pressure drop at maximum target alpha -               0.35 in.w.c., including blank-off plates and associated velocity conversions
                                      Pressure drop at minimum target alpha -              0.70 in.w.c., including blank-off plates and associated velocity conversions
                                                               Damper height -                12 inches
                                                                Damper width -               42 inches
                                                                       Velocity -         2,000 fpm
                                              Damper loss at design velocity -              0.13 in.w.c. (From ASHRAE fitting data base)
                                                                    Entry loss -            0.10 in.w.c. (From ASHRAE fitting data base)
                                                                      Exit loss -          0.25 in.w.c. (From ASHRAE fitting data base)
                                                                     Total loss -          0.48 in.w.c.


                         Conclusion:
                         The selection at this velocity is with-in the target loss range. Use this size


Page 6 of 23 of Sheet Sample calcs of File 2af14841-b27a-4183-af79-11fbd1054da1.xls
Printed on 8/20/2012 at 7:31 PM
DAS
Minimum outdoor air damper sizing
                    Size for the same pressure drop as the economizer dampers at the design flow rate
                                                               Target velocity -       2,000 fpm
                                      Target damper loss at design velocity -            0.13 in.w.c. (From damper curves)
                                                             Design flow rate -        3,000 cfm
                                                               Damper height -              6 inches (one blade)
                                                                Damper width -             36 inches
                                      Actual velocity based on size and flow -         2,000 fpm


Relief damper sizing
                                    Pressure drop at maximum target alpha -           0.0050 in.w.c., including blank-off plates and associated velocity conversions
                                     Pressure drop at minimum target alpha -          0.0100 in.w.c., including blank-off plates and associated velocity conversions
                                                               Damper height -             48 inches
                                                                Damper width -             48 inches
                                                                       Velocity -        438 fpm
                                              Damper loss at design velocity -           0.01 in.w.c. (From ASHRAE fitting data base)
                                                                    Entry loss -         0.01 in.w.c. (From ASHRAE fitting data base)
                                                                      Exit loss -        0.01 in.w.c. (From ASHRAE fitting data base)
                                                                     Total loss -        0.03 in.w.c.


                       Conclusion:
                       Entry and exit losses are rounded up by the ASHRAE data base and are actually less than shown here. Thus the over-all damper loss will be
                       slightly less. A slightly higher loss than the minimum alpha pressure drop will improve linearity and provides some margin since the building will
                       leak and the net relief flow through the damper will probably be less than the design value.




Page 7 of 23 of Sheet Sample calcs of File 2af14841-b27a-4183-af79-11fbd1054da1.xls
Printed on 8/20/2012 at 7:31 PM
DAS
1400 SW 5th Ave, Suite 700, Portland, Oregon 97201 (503) 248-4636 FAX: (503) 295-0820 E-Mail: peci@peci.org
Engineering Calculation
Date:                37690
Project Name:        LBNL PIER FT Guide
Project Number:      890
Engineer:             DAS

Economizer Dampers
Relief dampers
-0820 E-Mail: peci@peci.org Web Site: www.peci.org
                                           Parallel Blade Damper Characteristics
                                 Developed from the 2001 ASHRAE Handbook of Fundamentals, Figure 14
               100%

               90%
                                                                                                      Alpha
               80%                                                                          (system pressure requirement
                                                                                          divided by damper pressure drop)
               70%                                                                                        1
                                                                                                          2
               60%                                                                                        3
Percent Flow




                                                                                                          5
               50%                                                                                        10
                                                                                                          20
               40%                                                                                        50
                                                                                                          100
               30%
                                                                                                          200

               20%

               10%

                0%
                      0%   10%   20%   30%    40%    50%   60%    70%   80%    90% 100%
                                               Percent Stroke
                                           Parallel Blade Damper Characteristics
                                 Developed from the 2001 ASHRAE Handbook of Fundamentals, Figure 15
               100%

               90%
                                                                                                      Alpha
               80%                                                                          (system pressure requirement
                                                                                          divided by damper pressure drop)
               70%
                                                                                                          1
                                                                                                          3
               60%
Percent Flow




                                                                                                          5
                                                                                                          10
               50%
                                                                                                          20
               40%                                                                                        50
                                                                                                          100
               30%                                                                                        200


               20%

               10%

                0%
                      0%   10%   20%   30%    40%    50%   60%    70%   80%    90% 100%
                                               Percent Stroke
1400 SW 5th Ave, Suite 700, Portland, Oregon 97201 (503) 248-4636 FAX: (503) 295-0820 E-Mail: peci@peci.org Web Site: www.peci.org
Engineering Calculation
Date:                 March 10, 2003
Project Name:        LBNL PIER FT Guide
Project Number:        890
Engineer:              DAS
Assumptions
                    1. Developed from data in the 2001 ASHRAE Handbook of Fundamentals, Figure 14



                                                    Percent flow at different alpha                               Percent stroke
   Percent stroke           1         2         3         5         10        20        50          100   200
          0%             0.00%     0.00%     0.00%     0.00%      0.00%     0.00%     0.00%     0.00%     0.00%        0%
         10%             5.00%     6.50%     7.00%     9.75%     12.00% 15.50% 22.00% 28.50% 37.50%                    10%
         20%            11.50%    14.00% 16.00% 20.50% 28.50% 34.50% 51.50% 65.00% 76.50%                              20%
         30%            20.00% 24.50% 28.00% 34.00% 44.50% 55.50% 73.75% 83.50% 90.00%                                 30%
         40%            30.50% 35.00% 40.00% 47.50% 58.75% 71.50% 84.75% 92.00% 95.00%                                 40%
         50%            41.00% 48.00% 53.00% 61.00% 72.00% 81.75% 91.25% 95.50% 97.50%                                 50%
         60%            52.00% 59.50% 65.00% 72.00% 82.00% 88.25% 95.00% 97.50% 99.25%                                 60%
         70%            64.00% 70.00% 75.00% 81.50% 88.25% 93.25% 97.50% 99.00% ####                                   70%
         80%            74.50% 81.00% 84.00% 88.75% 93.25% 97.50% 99.50% #### ####                                     80%
         90%            87.50% 90.50% 92.00% 95.00% 97.50% #### #### #### ####                                         90%
        100%            #### #### #### #### #### #### #### #### ####                                                  100%




Page 22 of 23 of Sheet Parallel Blade Graph Data of File 2af14841-b27a-4183-af79-11fbd1054da1.xls
Printed on 8/20/2012 at 7:31 PM
DAS
1400 SW 5th Ave, Suite 700, Portland, Oregon 97201 (503) 248-4636 FAX: (503) 295-0820 E-Mail: peci@peci.org Web Site: www.peci.org
Engineering Calculation
Date:                 March 10, 2003
Project Name:        LBNL PIER FT Guide
Project Number:        890
Engineer:              DAS
Assumptions
                    1. Developed from data in the 2001 ASHRAE Handbook of Fundamentals, Figure 15


                                             Percent flow at different alpha                           Percent stroke
   Percent stroke          1        3         5         10       20        50       100       200
         0%             0.00%     0.00%     0.00%    0.00%     0.00%     0.00%     0.00%     0.00%            0%
         10%            2.50%     3.50%     4.00%    6.50%     8.50%     12.00% 17.50% 22.50%                10%
         20%            5.50%     8.50%    10.05% 14.50% 18.50% 27.50% 36.00% 47.50%                         20%
         30%           10.00% 14.70% 18.00% 23.00% 31.50% 44.00% 58.00% 69.75%                               30%
         40%           15.50% 22.00% 27.00% 35.00% 45.00% 62.00% 74.50% 85.75%                               40%
         50%           22.50% 32.00% 38.00% 48.00% 61.00% 76.00% 85.50% 92.50%                               50%
         60%           32.75% 44.50% 51.50% 62.50% 75.00% 86.75% 92.00% 96.50%                               60%
         70%           46.75% 57.50% 66.00% 76.00% 85.00% 92.50% 95.25% 98.00%                               70%
         80%           61.50% 72.50% 79.00% 87.00% 92.00% 97.00% 98.00% 99.00%                               80%
         90%           78.50% 88.00% 91.00% 94.50% 97.50% 99.00% #### ####                                   90%
        100%           #### #### #### #### #### #### #### ####                                              100%




Page 23 of 23 of Sheet Opposed Blade Graph Data of File 2af14841-b27a-4183-af79-11fbd1054da1.xls
Printed on 8/20/2012 at 7:31 PM
DAS

				
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