final report 50378-1 - fresefrese-eu.com.tr/images/cert/optimabsriareport50378-1.pdf · this report...

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Report

Frese Optima Valve Tests Final Report 50378/1 March 2007 Carried out for: Frese Ltd Trafalger House Union Street Southport Merseyside PR9 OQE Compiled by: P Stonard No. of pages: 15 of text Appendix: A - B Quality Approved: GREG KING BSc MSc M.InstR GROUP MANAGER MicroClimate, Test

FRESE VALVE TESTS SUMMARY

© BSRIA Final Report 50378/1 1

SUMMARY This report details work carried out to determine the ability of a Frese Optima to meet the manufacturer’s specifications in respect of flow control, together with an assessment of the range characteristics and any noise generation during operation. The average flow for each valve/cartridge combination tested was within a +/- 5% tolerance of the nominal maximum rated flow (1050l/hr) when tested full open at various pressure differentials. Fitment of a double bend upstream of an Optima DN20 valve had no significant effect on flow control. No discernible noise was detected during the tests, either at steady flow conditions or during pressure changes or actuator operation. Full details of the test programme and results are included within the main body of this report.

FRESE VALVE TESTS CONTENTS


CONTENTS 1 INTRODUCTION............................................................................................................................. 3 2 ITEMS TESTED ............................................................................................................................... 3 3 TEST FACILITY .............................................................................................................................. 3

3.1 Instrumentation.......................................................................................................................... 5 3.2 Methodology.............................................................................................................................. 5

4 Results ............................................................................................................................................... 6 4.1 Optima DN20 900 actuator characteristic at index 4 (Maximum) ............................................ 6 4.2 OPtima DN20 900 actuator characteristic at index 3 ................................................................ 7 4.3 Optima DN20 900 actuator characteristic at index 2................................................................. 7 4.4 Optima DN20 900 actuator characteristic at index 1................................................................. 8 4.5 Optima DN20 900 pressure cycle tests on straight pipe............................................................ 9 4.6 Optima DN20 900 actuator characteristic at index 4 (Maximum) with double bend.............. 10 4.7 Optima DN20 900 actuator characteristic at index 3 with double bend .................................. 10 4.8 Optima DN20 900 actuator characteristic at index 2 with double bend .................................. 11 4.9 Optima DN20 900 actuator characteristic at index 1 with double bend .................................. 11 4.10 Optima DN20 900 pressure cycle tests with double bend ....................................................... 12 4.11 Optima DN20 actuator modulation curves .............................................................................. 13 4.12 Optima DN20 actuator modulation curves with double bend ................................................. 14

5 CONCLUSIONS ............................................................................................................................. 15 5.1 Comments/Analysis................................................................................................................. 15

BSRIA PRODUCTS AND SERVICES ................................................................................................ 29

APPENDICES Appendix A Calibration certificates ................................................................................................16 Appendix B Manufacturer’s literature ............................................................................................24

FIGURES Figure 1 General view of test rig......................................................................................................4 Figure 2 View showing test lengths, flow meter and pressure transducers......................................4 Figure 3 Optima DN20 with double bend upstream ........................................................................5

FRESE VALVE TESTS INTRODUCTION


1 INTRODUCTION

This report details work carried out to determine the characteristics of the Frese Optima valve in respect of cartridge flow control, range, stem travel and an assessment of any noise generation. The work was carried out at the BSRIA test laboratories during the period 12 to 21 March 2007. This report refers to the items tested and no others.

2 ITEMS TESTED

The valve was supplied from production stock by Frese, Denmark and consisted of the following pieces:

Frese No Recommended user range (l/hr)

Min ∆P (kPa)

53-1021 100-900* 16 *Nominal cartridge control flow at maximum pre setting of 4 = 1050l/hr. The test piece consisted of a cartridge, orifice and retaining clip in an Optima body, together with a 53-1040, 0-10V actuator. A type number and date code was stamped on the orifice and cartridge combination, which was noted after testing was completed. The valve was supplied without pressure tappings.

3 TEST FACILITY

The test facility was the BSRIA valve test rig. It consisted of a multi pump system fed from a constant head tank. Test circuits of up to four different pipe sizes could be accommodated on common manifolds and separately valved off to allow flow through individual circuits. An additional pump was installed to ensure sufficient pressure could be generated for these tests. Each circuit in use had a calibrated magnetic flow meter in-line, with a digital readout. Differential pressure was measured by means of a DPWA pressure transducer with analogue indicator covering the range 0-10 bar. Pressure tappings were fitted on the test section at 2 diameters upstream and 6 diameter downstream in accordance with BS EN 60534 (Figures 1 & 2). Differential pressure was changed by varying the selected pump speed using a combination of electronic inverter drives and bypass valve. The Optima valve was installed in a ¾ BSP pipe size with 1000 mm straight length upstream and 500 mm downstream. A further test was carried out with a double swept bend immediately in front of the Optima valve (Figure 3).

FRESE VALVE TESTS TEST FACILITY


Figure 1 General view of test rig

Figure 2 View showing test lengths, flow meter and pressure transducers

FRESE VALVE TESTS TEST FACILITY


Figure 3 Optima DN20 with double bend upstream

3.1 INSTRUMENTATION Instrumentation consisted of the following calibrated items. Calibration certificates can be seen in Appendix A.

Instrument Serial No. Date calibrated Siemens MAG1100/6000 DN25 125 21 August 2006 DPWA differential manometer 0-10.0 bar 200536 6 February 2006 Budenberg reference gauge 0-16 bar 371 30 November 2006 Digitron thermometer 112 1 September 2006

3.2 METHODOLOGY The test method consisted of installing the Optima valve and raising the pressure to 1.0 bar with the rotating sleeve set to maximum (Index number 4). The 0-10V actuator was then driven down from 10V to 0V in 1volt increments. The flow rate was noted at each voltage. The pressure was then raised to 10V in the same incremental steps to establish the extent of hysteresis. The pressure differential was then raised to 4 bar, the flow noted and returned to 1 bar and re measured. The actuator was then driven to 5 Volts and this pressure cycle repeated. An assessment of noise was made using a stethoscope on the valve body. The rotating sleeve was marked with index numbers. It was therefore decided to use the main index numbers as the alternative range set values, thus giving four flow ranges that were tested. Therefore the complete test process was then repeated with the sleeve index number set to 3, 2 and 1. A double swept bend was then installed immediately upstream of the Optima valve and all test ranges repeated.

FRESE VALVE TESTS RESULTS


4 RESULTS

The flow test results are tabulated overleaf, and the data plotted. A subjective assessment of noise by means of a stethoscope did not detect any extraneous sounds above a slightly increased sound of rushing water at higher pressures and small actuator openings. No noise at all was evident over the operating range without the use of a stethoscope. Sections 4.1-4.4 show results for tests conducted on a straight pipe. Sections 4.5-4.8 show results with a double bend installed upstream of the Optima valve.

4.1 OPTIMA DN20 900 ACTUATOR CHARACTERISTIC AT INDEX 4 (MAXIMUM)

Presetting Valve Actuator position (v) Dp (kPa) Flow L/H Nominal %4 10 101.7 1053 100.34 9 102.6 1019.2 97.14 8 105.8 952.9 90.84 7 106.7 869.8 82.84 6 110.2 743.4 70.84 5 113.7 610.2 58.14 4 116.3 475.9 45.34 3 120.6 335.5 32.04 2 124.7 159.1 15.24 1 128 0 0.04 1 127.2 0 0.04 2 124.3 171.4 16.34 3 120.1 350.6 33.44 4 116.1 519.1 49.44 5 112.5 671 63.94 6 109.7 795.2 75.74 7 105.7 912.6 86.94 8 104.4 989.6 94.24 9 103 1047.6 99.84 10 102.8 1047.2 99.7



4.2 OPTIMA DN20 900 ACTUATOR CHARACTERISTIC AT INDEX 3


Presetting Valve Actuator position Dp (kPa) Flow L/H Nominal %3 10 103.6 885.6 84.33 9 103.9 864 82.33 8 105.1 811.4 77.33 7 106.2 738.4 70.33 6 108.1 649.1 61.83 5 109.4 525.6 50.13 4 111.4 385.2 36.73 3 111.2 225.4 21.53 2 115.2 171 16.33 1 114.1 0 0.03 2 116.2 148 14.13 3 114 257.8 24.63 4 100.5 394.9 37.63 5 98.9 522 49.73 6 96.8 633.6 60.33 7 95.4 730.8 69.63 8 94 801.7 76.43 9 93.5 849.6 80.93 10 93.1 864.4 82.3

Presetting Valve Actuator position Dp (kPa) Flow L/H Nominal %2 10 96.9 619.2 59.02 9 97.5 601.2 57.32 8 97.9 561.6 53.52 7 98.7 522 49.72 6 99.3 464.4 44.22 5 100.3 410.4 39.12 4 101 332.6 31.72 3 102.1 248.8 23.72 2 103.1 139.3 13.32 1 104.8 0 0.02 2 103.5 134.6 12.82 3 102.3 241.9 23.02 4 101.2 329.4 31.42 5 100.3 414.7 39.52 6 99.1 488.5 46.52 7 98.1 540 51.42 8 97.8 579.6 55.22 9 97.4 605.5 57.72 10 97.3 610.2 58.1




Presetting Valve Actuator position Dp (kPa) Flow L/H Nominal %1 10 97.5 321.5 30.61 9 97.2 313.9 29.91 8 97.7 301.3 28.71 7 97.8 277.6 26.41 6 98.1 248.8 23.71 5 98.6 212.4 20.21 4 99.1 173.9 16.61 3 99.4 126 12.01 2 100 77 7.31 1 100.7 0 0.01 2 100.1 69.5 6.61 3 99.6 118.4 11.31 4 99.1 167 15.91 5 98.8 216 20.61 6 98.1 255 24.31 7 97.9 283 27.01 8 97.6 302 28.81 9 97.4 313 29.81 10 97.2 316 30.1



4.5 OPTIMA DN20 900 PRESSURE CYCLE TESTS ON STRAIGHT PIPE

Presetting valve

Actuator position

Diff pressure (kPa) Flow (l/h) Flow (l/s) Nominal %

1 10 101.6 330.8 0.092 31.51 10 399.7 299.9 0.083 28.61 10 101.4 321.5 0.089 30.61 5 108 191.2 0.053 18.21 5 412 184 0.051 17.51 5 389.6 176 0.049 16.81 5 106.2 185.8 0.052 17.71 5 94 187.9 0.052 17.9

2 10 99 587.5 0.163 56.02 10 393.7 547.9 0.152 52.22 10 416 556.2 0.155 53.02 10 99.9 573.5 0.159 54.62 5 99.5 345.2 0.096 32.92 5 394.6 329.8 0.092 31.42 5 417.3 331.9 0.092 31.62 5 98.1 343.8 0.096 32.7

3 10 98 874.8 0.243 83.33 10 393.8 836.6 0.232 79.73 10 100.4 857.5 0.238 81.73 5 100.5 483.8 0.134 46.13 5 399.5 465.5 0.129 44.33 5 102.6 478.8 0.133 45.63 5 0 0 0.000 0.0

4 10 99 1087.2 0.302 103.54 10 399.7 1063.1 0.295 101.24 10 102.5 1069.2 0.297 101.84 5 104.6 615.6 0.171 58.64 5 402 603 0.168 57.44 5 106.1 604.8 0.168 57.64 5 0 0 0.000 0.0



4.6 OPTIMA DN20 900 ACTUATOR CHARACTERISTIC AT INDEX 4 (MAXIMUM) WITH DOUBLE BEND

4.7 OPTIMA DN20 900 ACTUATOR CHARACTERISTIC AT INDEX 3 WITH DOUBLE BEND

Presetting Valve Actuator position Dp (kPa) Flow L/H Nominal %4 10 98 1099.8 104.74 9 98.3 1068.1 101.74 8 99.3 1011.6 96.34 7 100.9 922.7 87.94 6 102.4 812.9 77.44 5 104.3 675 64.34 4 105.7 527.4 50.24 3 106.7 360.4 34.34 2 108.1 180.7 17.24 1 109.4 0 0.04 1.62 108.7 75.2 7.24 2 107.7 178.9 17.04 3 106.5 373.3 35.64 4 105.4 535.7 51.04 5 103.9 685.1 65.24 6 102.1 829.4 79.04 7 100.4 961.2 91.54 8 98.8 1042.9 99.34 9 98.1 1080.7 102.94 10 97.8 1086.1 103.4

Presetting Valve Actuator position Dp (kPa) Flow L/H Nominal %3 10 99.7 920.5 87.73 9 100.7 898.9 85.63 8 101.2 850.3 81.03 7 101.7 780.8 74.43 6 103.5 684 65.13 5 104.2 580.3 55.33 4 105.1 459 43.73 3 105.7 317.5 30.23 2 106.9 175.7 16.73 1 106.7 0 0.03 2 106.6 175.7 16.73 3 105.6 329 31.33 4 104.7 462.6 44.13 5 103.8 581.8 55.43 6 102.9 695.2 66.23 7 103.2 794.9 75.73 8 101 860.4 81.93 9 100.1 893.2 85.13 10 100.2 893.9 85.1





Presetting Valve Actuator position Dp (kPa) Flow L/H Nominal %2 10 105.4 631.4 60.12 9 105.5 618.8 58.92 8 106.1 586.4 55.82 7 106.3 539.3 51.42 6 106.4 482 45.92 5 107 406.1 38.72 4 107.4 334.1 31.82 3 108 239.4 22.82 2 108.8 140.8 13.42 1 109.8 0 0.02 2 108.6 135.7 12.92 3 107.9 247.7 23.62 4 107.2 339.8 32.42 5 106.8 416.9 39.72 6 106.2 494.6 47.12 7 105.9 565.6 53.92 8 105.3 596.5 56.82 9 105.7 617.8 58.82 10 105.4 617 58.8

Presetting Valve Actuator position Dp (kPa) Flow L/H Nominal %1 10 96.2 334.8 31.91 9 95.9 326.9 31.11 8 96.1 312.8 29.81 7 96.2 285.8 27.21 6 96.4 250.9 23.91 5 96.6 206.5 19.71 4 96.9 164.2 15.61 3 97.2 115.6 11.01 2 97.5 72.4 6.91 1 98.1 0 0.01 2 97.4 72 6.91 3 97.1 124.6 11.91 4 96.8 169.9 16.21 5 96.6 210.6 20.11 6 96.2 254.5 24.21 7 96 290.2 27.61 8 96.1 313.9 29.91 9 96.2 330.5 31.51 10 96 331.6 31.6



4.10 OPTIMA DN20 900 PRESSURE CYCLE TESTS WITH DOUBLE BEND

Presetting valve

Actuator position (V)

Diff pressure

(kPa) Flow (l/h) Flow (l/s)Nominal

%1 10 96.1 329.8 0.092 31.41 10 412.4 304.6 0.085 29.01 10 390 297.7 0.083 28.41 10 99.3 328.3 0.091 31.31 5 98 190.8 0.053 18.21 5 392.2 195.8 0.054 18.61 5 415.9 199.4 0.055 19.01 5 100.7 187.9 0.052 17.9

2 10 105.5 617.8 0.172 58.82 10 409.2 590.4 0.164 56.22 10 387.6 576 0.160 54.92 10 102.9 615 0.171 58.62 5 97.2 364.7 0.101 34.72 5 410.4 355.3 0.099 33.82 5 389.2 345.2 0.096 32.92 5 97.4 359 0.100 34.2

3 10 100.3 892.8 0.248 85.03 10 402.7 877.7 0.244 83.63 10 101.6 896.6 0.249 85.43 5 105.6 515.9 0.143 49.13 5 388.8 486 0.135 46.33 5 411.2 495 0.138 47.13 5 107.7 509.8 0.142 48.6

4 10 99.3 1112 0.309 105.94 10 400.3 1120 0.311 106.74 10 100.7 1094 0.304 104.24 5 107.1 615.6 0.171 58.64 5 389.1 587.2 0.163 55.94 5 97.5 605.9 0.168 57.7



4.11 OPTIMA DN20 ACTUATOR MODULATION CURVES

Flowrate vs applied voltage Optima DN20 at 1 bar

0.0

200.0

400.0

600.0

800.0

1000.0

1200.0

0 1 2 3 4 5 6 7 8 9 10

Voltage

Flow

l/hr

Max index 4Index 3Index 2Index 1



4.12 OPTIMA DN20 ACTUATOR MODULATION CURVES WITH DOUBLE BEND

Flowrate vs applied voltage Optima DN20 with double bend at 1 bar

0.0

200.0

400.0

600.0

800.0

1000.0

1200.0

0 1 2 3 4 5 6 7 8 9 10

Voltage

Flow

l/hr

Max Index 4Index 3Index 2Index 1

FRESE VALVE TESTS CONCLUSIONS


5 CONCLUSIONS

The average flow for each valve/cartridge combination tested was within a +/- 5% tolerance of the nominal maximum rated flow (1050l/hr) when tested full open at various pressure differentials. Fitment of a double bend upstream of an Optima DN20 valve had no significant effect on flow control. No discernible noise was detected during the tests, either at steady flow conditions or during pressure changes or actuator operation.

5.1 COMMENTS/ANALYSIS The Optima DN20 900 valve meets its claimed performance of flows within a +/-5% band when assessed against the maximum pre setting index and nominal flow of 1050 l/hr The actuator showed a smooth progressive characteristic between 1volt and 9 volts, independent of the maximum range (presetting scale) setting when subjected to a differential pressure of 1 bar. Control characteristics appeared to improve slightly as testing progressed (tests on the double bend arrangement followed straight pipe tests). This may have been a function of the new cartridge ‘bedding in’.

FRESE VALVE TESTS APPENDIX A


Appendix: A Calibration certificates

FRESE VALVE TESTS APPENDIX B


Appendix: B Manufacturers literature

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