Exaust Dispersion Assessment

FINAL REPORT

EXHAUST DISPERSION ASSESSMENT

PLASTICAIR INC.

MISSISSAUGA, ONTARIO

Project Number: 04-1506B

Date: March 10, 2005

Submitted By: Rowan Williams Davies & Irwin Inc.

Technical Coordinator - Sonia Beaulieu, M.Sc.

Project Manager - Bill Smeaton, P.Eng.

Project Director - Glenn D. Schuyler, P.Eng.

Submitted to: Plasticair Inc.

Exhaust Dispersion Study - March 10, 2005 Plasticair Inc., Mississauga, Ontario - Project Reference #04-1506A

TABLE OF CONTENTS

Page No.

1. EXECUTIVE SUMMARY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

2. INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

3. METHODOLOGY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

4. PROJECT OBJECTIVES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

5. FINDINGS AND DISCUSSION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

5.1 Entrainment Ratios (ERs) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

5.2 Data Interpretation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

5.3 Smoke Flow Visualization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

6. CONCLUSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

FIGURES

APPENDICES

Exhaust Dispersion Study - March 10, 2005 Plasticair Inc., Mississauga, Ontario - Project Reference #04-1506B Page 1

1. EXECUTIVE SUMMARY

Rowan Williams Davies & Irwin Inc. (RWDI) was retained by Plasticair Inc. to assess the

performance of a revised air-induction stack design by conducting concentration and velocity profile

measurements through the use of physical modelling in a boundary-layer wind tunnel. These tests

were performed in continuation to a previous assessment conducted in 2004, for which a final report

was issued on August 3, 2004 (RWDI Report #04-1506A). In addition to the above, concentration

and velocity measurements were also conducted for a bifurcated stack design and for a second

Plasticair stack design.

The stacks’ performances were assessed by calculating entrainment ratios (ER) while varying

inlet and outlet flow conditions such as discharge velocities, wind speeds and wind approach angle

to the stacks. Performance was also assessed by measuring the discharge velocities at the top of the

stack and by using smoke to visually observe inlet and outlet flows.

Based on our findings, we conclude that on average, an ER of 1.89 would be obtained

independently of the wind speed (up to 20 mph), approach angle of the wind and nozzle velocity

(between 3,500 and 4,000 fpm). Approximately 99% of the time, we expect that ERs calculated

would fall within a range of 1.80 to 1.97 for Design #1. While an average ER of 2.05 was calculated

for Design #2 at 4,000 fpm, we expect that ERs ranging between 1.92 to 2.18 would be obtained

99% of the time under those specific operational conditions. Data for the bifurcated stack was also

found to be similar under varying nozzle speed and wind angle, but showed statistically meaningful

differences under 10 and 20 mph, with ERs ranging between 1.22 to 2.43. Although included in the

report, velocity measurements were not used to assess the performance of any stack design because

of the large degree of variability observed in the measurements.

Exhaust Dispersion Study - March 10, 2005Page 2 Plasticair Inc., Mississauga, Ontario - Project Reference #04-1506A

2. INTRODUCTION

RWDI was retained by Plasticair Inc. to assess the performance of two Plasticair and one

bifurcated nozzle design. Photos of each stack configuration as installed and tested in our wind

tunnel are shown in Figures 1 to 3. The Plasticair Designs #1 and #2, along with the measurement

points sampled, are shown in Figures 4 and 5, while the bifurcated nozzle design is shown in Figures

6 and 7. While the nozzles between the two Plasticair configurations, Design #1 and #2, remained

the same, differences between the two stacks included increased porosity of the wind foils and the

addition of a baseboard and blockage at the base of the stack.

3. METHODOLOGY

Similar test protocols and methodologies as those described in our previous final report

(RWDI Report #04-1506A) were used for this round of tests. Tests were conducted using both tracer

gas and velocity measurements. Tests were conducted for two inlet speeds of 3,500 and 4,000 fpm

for the two Plasticair stack designs. Flow rates to the bifurcated stack were adjusted to obtain nozzle

discharge velocities of approximately 3,500 and 4,000 fpm which, based on our experience, are

below optimum operational conditions. Tests were conducted for three wind conditions (i.e., 0, 10

and 20 mph) and for two wind approach angles (i.e., P1 and P2) as shown in Figures 4 to 7. The

performance of each nozzle design was assessed by calculating the entrainment ratio (ER), which

represents the ratio between the total air volume at the top of the stack and total air volume coming

into the stack through the fan.


4. PROJECT OBJECTIVES

The main objectives of this project were to:

• Assess the performance of the Plasticair and bifurcated stack designs by calculating ERs;

• Determine how ERs vary with wind speed, wind approach angle and nozzle velocity; and

• Conduct visual observations of the stacks using smoke.

5. FINDINGS AND DISCUSSION

Raw data for the tracer gas measurements (in parts per million (ppm) of carbon monoxide)

obtained at the top of the stacks and for each stack design tested are presented in Appendix A.

Velocity measurements (in feet per minute) are presented in Appendix B.

5.1 Entrainment Ratios (ERs)

A summary of the ERs calculated using concentrations, and for each of the scenarios tested,

are presented in Table 1. ERs calculated using velocity measurements are presented in Table 2.

Although raw velocities (see Appendix B) and ERs calculated based on those measurements

are included in this report, we recommend against their use due to the high degree of variability

found within the data. Velocity measurements were highly sensitive to location of the sampling

point; in some instances, velocities more than doubled when moving the sampling port less than ½

inch from one location to another. We believe that this large degree of variability is due to the

complex nature of the velocity profile at the top of the stack. This variability also increased with

discharge velocity.


Table 1: Summary of Entrainment Ratios (based on concentration measurements)

Tested WindSpeed (mph)

Plasticair Design #1 Plasticair Design #2 Bifurcated Design

3,500 fpm 4,000 fpm 3,500 fpm 4,000 fpm 3,500 fpm 4,000 fpm

P1 P2 P1 P2 P1 P2 P1 P2 P1 P2 P1 P2

0 1.93 1.65 -- 1.57 1.98 1.96

10 1.88 1.88 1.90 1.90 -- -- 2.09 1.99 2.09 1.91 2.22 2.13

20 1.92 1.93 1.86 1.84 -- -- 2.10 2.04 1.70 1.50 1.97 1.71Note:– Not tested in the wind tunnel.

Table 2: Summary of Entrainment Ratios (based on velocity measurements)

Tested WindSpeed (mph)

Plasticair Design #1 Plasticair Design #2 Bifurcated Design

3,500 fpm 4,000 fpm 3,500 fpm 4,000 fpm 3,500 fpm 4,000 fpm

P1 P2 P1 P2 P1 P2 P1 P2 P1 P2 P1 P2

0 1.68 2.21 -- 2.23 1.48 1.33

10 2.24 2.03 2.21 2.03 -- -- 2.22 2.01 1.33 1.59 1.29 1.50

20 1.91 1.58 2.15 1.80 -- -- 2.11 1.79 1.38 1.28 1.31 1.07Note:– Not tested in the wind tunnel.

As shown in Table 1, ERs calculated with concentrations varied between 1.65 and 1.93 for

Plasticair Design #1, while those calculated for Plasticair Design #2 varied between 1.57 and 2.10.

ERs calculated for the bifurcated stack varied within similar ranges, between 1.50 and 2.22 as shown

above. One of the notable features of the bifurcated design is the low velocity measured on the outer

ring at the top of the windband (i.e., at Receptors 4, 10, 14, 19, 23, 29, 34 and 38) which indicate

poor entrainment within that area.

As shown in Appendix A, downwash of tracer gas on the downwind side of the nozzle (see

Receptor 24) was observed for Plasticair Design #1, especially under higher winds, and was found

to decrease with increased nozzle speeds. Downwash at the downwind receptor of Plasticair Design

#2 was not evident from the concentration measurements, but was visually observed in localized

areas using smoke. It is unclear whether the absence of impacts is the result of design modifications

between Designs #1 and #2, or the result of a different location for the downwash receptor which

was brought closer to the base of the stack for Design #2. Although downwash was also noted for

the bifurcated stack design, the magnitude of tracer gas concentrations was lower than that measured

for Design #1.


5.2 Data Interpretation

When comparing data sets against each other, it is important to statistically analyse the data

to determine if the differences between measurements are simply the result of variability and

repeatability of the measurement methods. A statistical analysis of the data determines whether or

not the differences observed are in fact the result of the varying test parameters.

Several statistical tests are available to determine if variability within data sets is statistically

meaningful. Of the methods available, RWDI selected and conducted Student t-tests for the

concentration ERs shown in Table 1 to determine if the differences observed between data collected

for inlet velocities of 3,500 and 4,000 fpm; approaching wind speeds of 10 and 20 mph; and between

wind positions P1 and P2 are indeed from the changes in test parameters or from repeatability

variations in the data. Data sets collected between the Plasticair Design #1 and #2 were also

compared against each other. The Student t-test statistical method is well suited to compare two

small data sets against each other.

The results of these statistical analyses showed that differences observed between ERs

calculated for 3,500 and 4,000 fpm are in fact not statistically meaningful and can be attributed to

repeatability of the test method. In other words, operating the stack at 3,500 or 4,000 fpm does not

significantly increase ERs. The same is also true for ERs calculated for 10 and 20 mph, and for ERs

calculated for wind angles P1 and P2. Thus, meaningful differences cannot be attributed to changes

in inlet velocities, wind speeds or approach angles within the ranges tested.

Average ERs calculated for each of the data sets are presented in Figure 8 below. The

associated error bars represent a 99% interval, which means that ERs for each of the different

scenarios would fall within each of the ranges shown approximately 99% of the time. Since

differences between each data sets were not significant, an overall average ER was calculated for

Design #1. Based on these results, we expect that on average, an ER of 1.89 would be obtained



would fall within a range of 1.80 to 1.97.


Summary of ERs

1.6

1.65

1.7

1.75

1.8

1.85

1.9

1.95

2

2.05

3500

fpm

4000

fpm

10 m

ph

20 m

ph

Pos

ition

P1

Pos

ition

P2

Ave

rage

Data sets

ER

s

Figure 8: Summary of ERs Calculated for Each of the Data Sets (Plasticair Design #1)

The ERs calculated for 4,000 fpm and for Plasticair Designs #1 and #2 were also statistically

compared against each other. In this case, differences between the two data sets were found to be

statistically meaningful; an average ER of 1.89 was calculated for Design #1, while an average ER

of 2.05 was calculated for Design #2 (which was only tested at a velocity of 4,000 fpm).

Approximately 99% of the time, we expect that ERs calculated for Design #2 would fall within a

range of 1.92 to 2.18.

Data for the bifurcated stack was also statistically analysed using the same methodology

described above. The following data sets were compared against each other; data collected at 3,500

and 4,000 fpm; at wind positions P1 and P2; and at 10 and 20 mph. Based on the results of this

analysis, we find that no significant differences can be noted between ERs calculated for the 3,500

and 4,000 fpm, nor for the P1 and P2 data sets. However, differences between data measured at 10

and 20 mph were noted. These results imply differences in performance under these wind speeds,

with ERs ranging between 1.75 and 2.43 at 10 mph, and between 1.22 and 2.22 at 20 mph. Thus,

the ERs are lower for the higher wind speed.


5.3 Smoke Flow Visualization

Smoke flow visualization was conducted for each of the three stack designs tested. The

following observations were made for each of the stacks:

• A large wake region was observed behind the Plasticair stack. This zone appeared to be

larger than that observed for the bifurcated stack, which may lead to greater stack tip

downwash.

• Air foils located on the bottom portion of the Plasticair Designs #1 and #2 did not appear to

re-direct the wind as intended (i.e., towards the centre of the foils).

• No notable suction on the downwind or upwind sides of either the Plasticair or bifurcated

stacks was observed, especially under the higher wind cases. In both cases, entrainment was

observed only immediately beneath the windband.

• Although dead zones were noticeable for the Plasticair designs, the velocity profile appeared

more uniform than the one observed for the bifurcated stack.

• Entrainment did not appear to take place between the two nozzles of the bifurcated stack.

Flow visualization showed that air flowed freely between the gap when the wind was

perpendicular.

6. CONCLUSIONS

Based on our findings, we conclude that on average, an ER of 1.89 would be obtained



would fall within a range of 1.80 to 1.97 for Design #1. While an average ER of 2.05 was calculated

for Design #2, we expect that ERs ranging between 1.92 to 2.18 would be obtained 99% of the time

under those specific operational conditions. Data for the bifurcated stack was also found to be

similar under varying nozzle speed and wind angle, but showed statistically meaningful differences

under 10 and 20 mph, with ERs ranging between 1.22 to 2.43 which were noticeably lower at the

higher wind speed. Although included in the report, velocity measurements were not used to assess

the performance of any stack design because of the large degree of variability in the measurements.

FIGURES

Date:

Figure No.

Plasticair - Mississauga, Ontario

Wind Tunnel Study Model Plasticair Design #1

Project #04-1506

1

March 7, 2005

Date:

Figure No.


Wind Tunnel Study ModelBifurcated Stack Design

Project #04-1506

2

March 7, 2005

Date:

Figure No.


Wind Tunnel Study ModelPlasticair Design #2

Project #04-1506

3

March 7, 2005

APPENDIX A

Table A1 - Concentration Measurements (ppm of CO) for Inlet Velocity of ~3,500 fpm for Plasticair Design #1

20 mph wind speed10 mph wind speed0 mph wind speedPosition 2BPosition 2APosition 1BPosition 1APosition 2BPosition 2APosition 1BPosition 1APosition 2BPosition 2APosition 1BPosition 1AReceptor

79.280.480.080.579.180.379.279.476.678.9––178.579.579.579.878.379.878.478.879.375.4––979.180.379.980.479.080.178.778.978.374.5––1778.979.980.080.378.979.878.578.779.073.5––2578.779.979.780.179.079.978.779.180.373.9––33

************************2.0***––82.42.348.434.4************4.19.8––24

42.045.633.737.932.937.837.437.234.533.3––253.354.746.956.337.733.945.645.830.630.3––354.854.866.771.031.535.052.555.233.311.4––466.559.869.876.849.041.663.066.447.229.9––530.939.014.226.037.037.436.537.728.527.3––647.350.238.652.542.245.639.642.727.328.7––757.158.766.663.553.557.549.443.948.951.7––1066.771.536.746.950.855.848.346.759.560.3––1113.825.118.112.636.734.231.833.029.522.6––1233.743.218.119.638.638.725.035.529.126.4––1360.154.18.361.742.934.831.059.651.137.1––1444.351.6***46.361.044.038.456.854.742.0––152.27.227.221.628.830.434.731.136.328.4––162.924.245.632.122.842.935.822.628.825.7––182.663.841.514.823.158.447.912.248.458.6––191.217.436.26.950.444.845.68.856.556.2––20******28.128.929.022.434.636.532.731.6––21******43.449.017.013.135.941.329.215.8––22

25.2***56.163.628.29.152.162.740.47.1––23******50.447.560.57.547.651.250.713.0––26

12.03.019.125.928.221.334.634.436.634.8––2738.116.515.534.633.229.322.421.026.031.9––2862.667.05.534.249.755.629.215.550.854.3––2942.57.11.137.765.264.432.19.056.950.7––3037.325.220.217.436.044.637.534.918.319.4––3151.144.336.513.931.739.437.434.221.224.6––3262.457.961.630.936.139.149.756.948.733.3––3463.759.357.049.652.251.755.461.453.940.0––3544.941.331.422.733.841.736.636.129.724.4––3649.651.350.443.737.937.439.237.730.126.9––3757.164.169.364.650.653.550.844.844.350.3––3868.472.275.367.260.069.057.049.262.657.8––3917.315.624.224.637.239.342.242.436.934.3––40



80.380.080.780.379.879.880.778.979.381.2––179.178.979.879.778.878.879.677.878.281.3––980.280.180.580.479.879.780.778.878.280.4––1779.780.080.680.379.879.680.578.578.580.3––2579.880.280.280.379.679.680.478.378.080.2––33

************************11.110.9––81.4***24.523.7************6.88.2––24

38.441.146.646.640.538.037.136.739.440.5––252.451.160.860.837.438.342.242.643.539.5––358.752.868.367.838.736.449.356.953.236.3––463.355.170.471.957.836.361.260.857.843.1––542.941.640.333.141.642.233.935.045.945.7––651.652.954.847.544.042.940.639.543.247.5––754.161.358.657.252.954.653.938.146.161.5––1064.472.459.249.655.168.247.938.864.369.1––1134.927.122.820.029.137.728.429.143.345.8––1252.347.735.922.635.839.723.736.940.842.5––1364.558.866.056.546.344.426.961.852.042.5––1468.460.846.747.362.946.838.360.857.349.3––1518.811.323.526.616.424.132.728.640.746.1––1642.540.818.433.619.731.635.922.737.641.9––1859.061.18.718.237.758.352.113.645.859.6––1963.537.12.917.538.068.446.26.859.972.4––207.33.229.531.519.415.137.935.637.341.7––21

25.83.949.148.813.49.134.736.933.333.0––2232.91.752.463.423.412.845.959.847.438.9––236.63.743.651.748.112.054.259.458.242.6––262.24.129.725.031.125.136.635.739.537.5––271.26.836.826.838.327.725.822.039.045.2––28

11.646.555.327.751.140.834.38.842.058.9––297.048.851.924.864.361.342.66.055.768.9––30

11.423.120.820.335.333.740.539.139.333.2––3123.138.512.620.631.832.839.035.140.323.4––3251.852.77.855.139.135.748.654.145.333.9––3459.860.82.649.047.248.956.559.055.742.4––3527.335.027.436.835.934.137.737.032.536.5––3643.348.641.051.338.735.041.337.527.444.0––3758.563.463.966.252.049.355.343.935.158.1––3860.167.756.364.751.857.951.047.758.866.0––3911.813.632.232.832.932.542.140.842.141.1––40



78.679.279.478.679.378.179.180.1––79.879.4177.978.478.577.878.077.578.379.0––78.579.0978.379.379.478.379.178.079.279.8––79.880.01778.479.279.378.178.778.079.079.6––80.280.42578.479.279.378.478.778.178.879.5––81.980.733

************************––8.111.38************************––23.222.624

41.141.536.639.536.936.731.032.6––40.641.1245.644.547.847.534.931.035.036.0––52.954.4349.046.156.759.939.124.547.858.9––57.763.5457.651.159.864.750.031.353.959.5––59.960.8534.839.122.230.035.435.228.531.4––34.940.9645.347.637.342.742.138.935.733.3––40.237.8756.660.057.350.752.857.150.834.1––55.040.31060.866.839.942.553.557.044.339.7––58.652.81120.326.26.612.228.430.222.126.3––41.742.11237.040.73.820.035.336.821.736.7––39.846.71356.752.9***46.950.543.126.663.0––42.364.01436.050.8***38.951.146.929.053.4––57.065.4159.314.712.37.820.124.023.121.6––41.644.816

10.431.129.728.020.733.122.213.4––42.936.31815.159.652.023.431.757.648.28.8––57.331.719***23.746.329.630.352.552.28.0––56.534.0206.54.917.217.820.617.524.628.4––43.044.221

11.5***20.724.013.95.222.229.2––37.246.02220.1***47.056.931.81.847.558.5––52.465.123******58.954.531.35.858.959.5––59.664.826

18.912.512.813.628.024.621.919.4––48.239.32732.627.17.014.432.829.122.510.9––41.433.82858.359.14.629.153.056.936.515.7––59.140.32931.915.43.945.552.550.928.730.4––54.540.13032.526.827.019.935.432.131.728.8––46.045.53140.937.739.225.635.732.230.132.9––44.346.63252.449.355.152.647.239.140.160.0––56.265.73453.652.139.841.849.642.650.748.7––63.769.23537.534.736.833.035.033.731.731.9––49.547.93641.541.344.141.733.334.833.028.7––50.343.93752.556.658.552.246.354.147.026.1––52.439.73863.264.057.848.558.458.153.738.3––60.743.63922.421.226.726.535.034.133.833.8––52.250.540

Table A4 - Concentration Measurements (ppm of CO) for Nozzle Velocity of ~3,500 fpm for Bifurcated Stack


80.780.280.079.779.979.880.680.679.780.0––180.680.380.079.679.979.680.280.679.679.6––980.580.079.979.779.979.579.980.279.579.8––1780.479.880.079.879.579.580.080.479.780.3––2580.380.279.879.179.779.379.779.979.980.3––33

21.021.07.26.62.42.82.44.413.29.5––823.623.010.09.05.54.9******17.67.6––24

71.374.465.863.570.872.571.272.168.771.2––253.463.138.628.234.658.926.832.761.578.7––333.740.533.721.210.033.14.811.124.953.2––471.870.780.176.079.782.578.975.870.569.4––661.149.864.453.743.832.534.143.645.950.8––734.024.049.239.410.26.917.724.615.213.5––1069.369.366.467.260.764.167.371.266.567.4––1268.367.951.363.851.951.048.366.340.937.4––1357.153.637.753.836.232.642.039.817.08.3––1471.270.067.966.362.660.869.372.166.665.8––1665.063.139.937.755.450.143.431.951.337.0––1855.454.226.223.937.627.910.74.530.116.9––1973.872.372.370.963.364.172.675.668.368.2––2165.770.054.350.169.180.442.149.751.465.6––2246.258.227.127.541.249.66.210.525.435.9––2372.172.976.774.564.061.976.376.570.567.6––2755.557.454.947.648.852.249.850.236.636.8––2828.733.830.726.322.127.912.514.820.915.9––2973.172.773.776.074.069.276.877.674.673.2––3156.656.258.070.146.959.466.865.457.542.7––3239.833.547.948.516.430.635.948.319.314.8––3473.871.963.767.871.468.975.373.674.169.3––3654.753.130.241.434.826.143.329.759.258.3––3738.940.744.347.422.920.831.914.529.422.8––3873.673.272.071.963.361.770.971.660.459.4––40

Table A5 - Concentration Measurements (ppm of CO) for Nozzle Velocity of ~4,000 fpm for Bifurcated Stack


79.879.879.580.180.279.879.079.4––80.080.6179.779.879.580.080.179.678.979.3––79.180.1979.880.079.579.980.079.679.179.4––80.180.71779.679.879.879.680.179.679.079.3––79.580.22579.779.979.679.780.279.678.779.0––79.580.833

12.211.84.04.1******3.33.2––12.34.2819.019.22.53.2************––15.916.624

69.373.065.263.968.872.369.469.4––67.267.1248.662.734.026.226.154.428.424.8––40.144.3326.640.224.217.112.033.09.95.5––13.85.8469.369.768.068.871.971.071.771.3––66.964.6657.148.359.251.438.923.249.038.7––56.740.3730.420.142.032.79.13.828.120.3––22.18.71065.466.564.866.160.566.170.070.4––65.064.41258.861.649.462.251.148.248.765.4––54.766.91335.742.518.338.622.519.411.536.3––24.434.61468.565.767.265.758.257.972.471.1––68.965.51661.055.642.540.156.350.538.733.3––42.939.61837.235.619.517.333.221.92.82.4––21.210.51970.870.472.170.959.259.974.674.9––72.973.12160.066.550.246.559.769.452.049.0––54.257.72230.945.420.920.641.249.213.312.2––21.119.52367.969.975.574.662.157.775.375.1––74.074.32750.451.648.547.950.751.470.149.4––65.649.82819.020.220.215.419.923.944.412.4––39.922.02970.169.671.875.273.769.175.976.9––74.674.53152.851.253.368.040.359.038.659.9––52.269.53235.227.140.637.011.626.923.044.0––28.354.73473.371.062.665.669.469.066.271.1––70.971.83652.451.326.432.932.119.517.224.5––40.547.53733.036.426.829.514.65.42.83.0––17.826.93870.170.169.269.164.062.470.570.5––63.363.940

APPENDIX B

Table B1 - Velocity Measurements (in fpm) for Inlet Velocity of ~3,500 fpm for Plasticair Design #1


14591449198819831415135221741237––101910822421011841211134379714771655––124813623572012521530205896216552468––1483214449530148518541691111515562591––125418275

15491641164214771374175913751536––1253129267191007109712751000161513451097––119310247884179196811381546260717051036––148072910

17581595129615872456209925831594––215410961116731743135412221922205617662026––134815411210621401154215401796155913712010––102111581314371195207923242344148819512771––169019271412891705223024531931161422993232––160823501516851597128012881968165421162040––165617241619231773123815371862184516891414––139011881824252799164013832317306419051381––15189651920071690156912462638230327371133––239013462015371549154717611441130122032414––1690173721984107921132217114571616972447––1241146222

1173119616802208189557727953403––186322082392510759611299159974622142426––2031208926

16431724206517201460180521612011––167816112714691763211614851396197117821243––120111782822922468244015211814285525151321––15767212912361726159910922391256228901436––232213373017251665133112841845176319161979––148012253116871041119115671618106818542331––1552150232163163317232558198486219423015––161022253421991388180425252194149817282126––149816673515961476182618701722152916771356––103192336756600193816141163146816331286––106877837

12191569210714151546236121491060––17378353817431544202618832238236822621874––180913803917861811204121372239217821742223––1652162240

Note: Receptors 1, 9, 17, 25, 33 were used to measure the inlet conditions. Therefore, no velocity measurements were recorded at those receptors.Receptors 8 and 24 were used to measure downwash along the side of the stack. No velocity measurements were recorded.



21222103232621782001206427081696––22472078214221385175116221905117120522011––2323264331834442178823522517108525433121––24903232426121431145722142461144619132253––19142202519291896212421072418234615311525––18231689613031007138813551858202914671065––1826116671925249414959862385329722061130––230210031028942402181317952958233526931594––260611151118901863195317952298209118252010––178918741211701747210321431798165617022288––178822031320521529252231302478157524083315––240332881418781931269132862487193421293081––186226921516091398157215711789150320361989––190019101623991822167719822292208317771500––181913381831293183191317843106344019031475––227810621919981730185013462742217623491243––29641641201041120717182237992102221632541––2096234221510805245528601195018012405––167022612280585126693314193629229813473––275734362356469314751935132075620352663––2599305826

12751589254521141286154327512573––252926322712891793241716061399242422541584––224017702819393283324818002298334726031382––231510942910182292246614782138252229801386––288015083017921912191820411947190825372463––240623383121921699156024162203147720572442––195422803228781265194834192562118723523575––253234823423481837207629962134148425212955––290328373523232062241124001969215022782149––222420233612341165245018411622190217371601––167714563719202687260515352008319624001398––238710333820372053262822742412221527912278––304218933917601847281328182035218227082668––2614255840

Note: Receptors 1, 9, 17, 25, 33 were used to measure the inlet conditions. Therefore, no velocity measurements were recorded at those receptors.Receptors 8 and 24 were used to measure downwash along the side of the stack. No velocity measurements were recorded.



2124210523272180200220652720169722492079––21442140617671640192011962066202523352654––3185251318062366253011152556313225043242––42623145114772228247314661928226619292215––51931189721262108242023481533152718251691––61322103114061373187120411483108718391187––7192724951498989238632982208113323041006––102895240418151797295923372694159626071118––111908188119701813231321071843202618081892––121195176421172156181416741719230018042216––132053153125233131247915772409331624043289––141891194427003293249719462141308818752701––151629142215931592180815252053200619171928––162400182416791984229320841778150218211340––183137319019261798311434471916149122881085––192015175018681371275421922363127029761661––201069123117352250102110502176255221102354––2151680924562862119701803240616722262––228358792678332219493672989348027653444––235696971477193713227602037266426003059––26

1301161025582130131215642763258625432645––271315181124311627142324382269160522551789––281953329232571816231133552614140323271121––291021229324681480213925232981138828811510––301806192519312053196019212547247324162348––312207171915822430221815002073245619712294––322879126819503420256411892354357625343483––342360185220903006214815042532296429132847––352337207924252414198621662292216522392039––361257118924611856164019171753161916941476––371922268826061537201031972401140123881036––382049206526372284242222262799228930501906––391779186528252830205221982720268126272571––40

Table B4 - Velocity Measurements (in fpm) for Inlet Velocity of ~3,500 fpm for Birfurcated Stack


24782735243725242657282022382664––22392289215322361946012402452795922––117113953

075400647146300––00421282166199822722501264122022342––20792083616221254216715391522103117871083––201715977

00838057779900––001018511920218920662140238025002393––229123941214032075144423411720202014082530––1540258813

0001079000566––011191419771746255923441887202027192605––280425641614781195742516198514514620––76871418

00000000––001922252148279227342053197128872920––30532982211857213415059681851255014341338––1584136722

0888000137600––002323242243287029182363218229452914––30093006278401043197017751271127622701479––2108119728000021402530––0029

24522450267928782881261227762829––256328323113971111210828471643235216662946––1850299532

00825146250164501968––017943428222660246026282848288227312746––2509254436171814394421268115210245501166––1096156337

000076447200––003822972251225322452274220122382141––1939184240

Note: Receptors 5, 11, 15, 20, 26, 30, 35 and 39 are not included above since measurements were not taken at those points

Table B5 - Velocity Measurements (in fpm) for Inlet Velocity of ~4,000 fpm for Birfurcated Stack


24662697262627252907306024073010––266128282139623361137530148727840670––6938103

060000564180900––00420212142221124282687284625672801––2258247861733126422701747165111521625872––195512207

0047206799274690––24701017601827229521792339252826022510––243024281215631967167225111945213918522751––1878278513

000494000962––012701420151721268124922148213027712638––2701250816145110341489961197914101107863––1327102218

00000000––001921862038292528882164218728082821––294328942116881978203817401995264520792122––1910226722

0497000132400––002322382260306330362471229230152842––3104289227593835202219061380141431091906––296817192800000013010––375029

24432430294529953006270631293080––293029803114521108210029911939243513082540––1670274232

00108614945426972651680––018203427832611274927573097306329953083––299929063617761478504975128412300679––582106037

000066867900––003822452245238624252258222224072337––2240218640

Note: Receptors 5, 11, 15, 20, 26, 30, 35 and 39 are not included above since measurements were not taken at those points

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Exaust Dispersion Assessment

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