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  • ARID Technologies - Independent Study - Lantana, Florida, Field Testing Summary
    volume meter temperature by thermocouple outlet meter pressure by pressure transducer At The Inlet Test Location Total hydrocarbons by NDIR Method 25B Dispensing Operations Gasoline volume dispensed into vehicles Vapor Connections and Vapor Collection Piping Leak test by explosimeter Method 21 Matus Technical Services was responsible for all on site sampling as well as for the submission of this final report of the test results which include a description of the sampling and analytical methods and the calculations used 2 0 Summary of Results The emission rate for the vapor control device and vent stack at this gasoline dispensing facility was determined The results of the test under each condition are summarized in Table 2 1 below Table 2 1 Test Results TERMINAL DESCRIPTION Retail Gasoline Dispensing TEST DATE TEST PERIOD 2 14 15 05 2 15 16 05 2 16 17 05 TEST CONDITIONS Permeator Off Vent Off Permeator On Permeator Off Vent On GASOLINE LOADED Gallons 19 186 19 121 18 908 AVERAGE INLET CONCENTRATION C3 NA 38 52 NA AVERAGE OUTLET CONCENTRATION C3 39 79 0 72 41 58 AVERAGE HYDROCARBON EMISSION lbs 1000 gallons 3 48 0 014 1 20 HYDROCARBON EMISSION RATE lb 24hr 66 84 0 27 22 75 HYDROCARBON REMOVAL EFFICIENCY calculated using total inlet and outlet masses NA 99 27 NA MTS PERSONNEL IN ATTENDANCE Harold N Matus P E Note An unquantifiable amount of gasoline vapors were released to atmosphere due to leaky tank fill points and during tank filling operation 3 0 Facility and System Operation 3 1 Vapor Collection and Transfer This site performs Stage II vapor recovery at its Lantana FL retail operation There are twelve fueling points equipped with Gilbarco Vapor Vac dispensers at this facility 3 2 Vapor Recovery Unit VRU The PERMEATOR gasoline vapor processor

    Original URL path: http://www.aridtech.com/study_lantana_2.html (2016-02-15)
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  • ARID Technologies - Independent Study - Lantana, FloridaTable 1 - Explanation of Terms
    at test site Mg of C3H8 milligrams of hydrocarbons milligrams of hydrocarbon measured as propane C3H8 Lbm pounds conversion of milligrams to pounds as propane C3H8 Mass gasoline propane C3H8 mass is converted to pounds of gasoline by using the ratio of the molecular weight MW of gasoline vapor MW 66 to the molecular weight of propane MW 44 Example 66 84 lbm 66 44 100 26 Gallons liquid gasoline liquid volume is calculated by dividing the mass of gasoline by 5 2 lbm gallon liquid conversion factor Example 100 26 Mass Gasoline 5 2 pounds of gasoline per gallon of liquid gasoline 19 28 Gallons liquid day test period interval is extrapolated to account for a total of 24 hours per day Example 19 28 Gallons Liquid 1 303 minutes in test interval 60 minutes per hour 24 hours 21 31 gasoline gallons saved per day Throughput the gasoline gallons saved per day gallons liquid day are divided by the gallons dispensed for the 24 hour period to yield a of throughput figure Example 21 31 gallons liquid saved per day 19 186 gallons of daily throughput 0 111 cfm cubic feet per minute the average cubic feet ft3

    Original URL path: http://www.aridtech.com/study_lantana_table1_terms.html (2016-02-15)
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  • Average V over L results
    9 14 N A N A 6 1 05 9 11 1 1 8 7 0 85 8 0 91 7 8 8 1 18 8 1 2 8 9 0 58 9 14 1 26 7 27 10 1 17 8 97 1 26 8 13 11 0 28 N A N A N A 12 1 18 9 23 1 24 8 27 STATION OPEN Multiple vehicles were

    Original URL path: http://www.aridtech.com/study_lantana_voverl.html (2016-02-15)
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  • Email Protection | CloudFlare
    is protected by CloudFlare Email addresses on that page have been hidden in order to keep them from being accessed by malicious bots You must enable Javascript in your browser in order to decode the e mail address If you have a website and are interested in protecting it in a similar way you can sign up for CloudFlare How do spammers get email addresses How does CloudFlare protect email

    Original URL path: http://www.aridtech.com/cdn-cgi/l/email-protection (2016-02-15)
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  • Arid Technologies - Membranes, Molecules and the Science of Permeation - Page 3
    Gravity California RFG Volume Correction Factor 30 727 0 979528 40 727 0 986291 50 727 0 993049 60 727 1 0 70 727 1 00707 80 727 1 014271 90 727 1 021597 100 727 1 029061 110 727 1 036667 Table 2 API Volume Correction Factors For Gasoline Source Petroleum Measurement Tables for the API Chapter 11 1 and ASTM D1250 Volume Correction Factors Standard Volumes I IX and Volumes XIII XIV As gasoline is warmed the density decreases and the volume occupied by a fixed mass therefore must increase As seen in Table 2 the volume expansion for this gasoline blend California RFG is about 0 7 percent for every 10 degree Fahrenheit rise Thus if a petroleum marketer takes delivery of 60 degrees F gasoline and if the average storage tank temperature is 80 degrees F the marketer will gain about 1 4 percent in salable product inventory The worst case evaporative losses from Table 1 are 10 76 tons a year for a station pumping 100 000 gallons per month 1 2 million gallons a year The loss computes to 0 34 percent This would still leave a net gain of 1 06 percent for the marketer 1 4 less 0 34 Therefore the evaporative losses are masked by the volume expansion of the gasoline due to heat gain To accurately measure the inventory loss due to evaporation net temperature corrected volumes should be used in the inventory reconciliation calculation Since most newer electronic tank gauges can incorporate temperature into their algorithms a proper inventory reconciliation is possible Impact on retail operating margins The evaporation loss translates directly into a reduced gross margin If a retailer pays for product delivered by tanker truck and if the retailer is not able to resell the same volume of product that they paid for the impact on operating efficiencies is higher than one might expect For example consider a typical station pumping two million gallons per year Assume the station has a pump selling price of 1 20 per gallon and a cost of 1 00 per gallon wholesale delivery taxes How much additional gasoline must the station sell to recoup the loss in contribution margin due to evaporation of 0 35 percent of throughput Consider a station with a pump price of 1 10 per gallon or a pump price of 1 05 per gallon Assume the evaporation rate annual throughput and the cost per gallon are the same as above One can show that the following relationship applies to speed up this calculation Volume to make up margin loss P1 P1 P2 X Y where P1 Selling price at the pump gallon P2 Cost per gallon wholesale delivery taxes gallon X Annual volume sold gallons Y Fraction lost to evaporation For the first case with a pump selling price of 1 20 per gallon the increased volume required is 41 000 gallons For the second case with a selling price of 1 10 per gallon the

    Original URL path: http://www.aridtech.com/membranes3.html (2016-02-15)
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  • ARID Technologies - Independent Study - Lantana, Florida, Field Testing Summary
    to the inlet hydrocarbon analyzer Outlet volume was measured with a Romet model RM1000DCID rotary gas meter A Pulse A Matic transmitter attached to the rotary gas meter sent a single pulse for every half a cubic foot through the meter Using test ports in the hard piping temperature was measured with a K type thermocouple and meter pressure was measured with a Rosemount pressure transmitter Outlet samples were drawn from a site on or near the rotary gas meter The outlet analyzer was a Horiba Model PIR 2000 NDIR analyzer operating in the range 0 4 C3 A stainless steel sample pump with Teflon diaphragm was used to draw the sample from the outlet through a Teflon sample line to the outlet analyzer The analysis system was housed in a laboratory trailer parked adjacent to the recovery unit A Campbell Scientific data acquisition system DAS was used to collect and log the data obtained from the above mentioned instrumentation The DAS monitors readings once each second and reports the results in one minute averages 4 2 Test Equipment Calibration Analyzer calibration gases will conform to approximately 25 50 and 90 of full range Zero reference gas was hydrocarbon free air All calibration gases conformed to applicable Reference Method requirements and were traceable to NIST Standard Reference Materials After field use the dry gas meter and rotary meter were checked at an intermediate flow rate of approximately 60 of rated flow If the calibration values have changed less than 1 5 the field data are acceptable If a change from the previous calibration values is more than 1 5 the meter will be recalibrated over its full range of flow Temperature and pressure transmitters used for field measurements were calibrated after testing Calibration data forms for the rotary meter thermocouple and pressure transmitters are shown in Appendix C 4 3 Analysis Procedure Prior to initiating the emissions test all vapor fittings on the processor were leak tested The test lasted 72 hours Two approximate 24 hour periods were without the PERMEATOR operating One of these 24 hours was with the pressure vacuum PV valve removed from the vent pipe and the second 24 hour period was with the PV valve attached to the vent pipe During these two time frames only the outlet analyzer and flow were monitored The third 24 hour period was while the PERMEATOR is in operation and the inlet and outlet hydrocarbon concentrations were continuously recorded The analyzers were zero and span checked about once every six hours The average volume meter temperatures and pressures during each one minute interval were logged by the DAS and used to convert actual meter volume to standard conditions During the test period gasoline dispensing data will be gathered from the computers logging the gasoline loading data 4 4 Data Analysis The hydrocarbon analyzer readings were averaged by the DAS over each one minute interval The vapor volumes were obtained by totaling the number of pulses over each one minute

    Original URL path: http://www.aridtech.com/study_lantana_3.html (2016-02-15)
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  • ARID Technologies - Independent Study - Lantana, Florida, Field Testing Summary
    in inches of mercury T Temperature in volume meter in F The mass of hydrocarbons emitted from the outlet during any one minute test period is calculated from Where HC out Hydrocarbon concentration at the outlet in C 3 Note The density of propane is 51 950 mg ft 3 For recovery efficiency of the PERMEATOR the feed volume is calculated from the outlet volume outlet hydrocarbon concentration permeate hydrocarbon concentration and inlet hydrocarbon concentration Where HC in Hydrocarbon concentration at the inlet in C 3 HC P Hydrocarbon concentration at the permeate in C 3 The inlet mass during any one minute test interval is The hydrocarbon removal efficiency is calculated from the inlet and outlet mass Efficiency can be calculated on an hourly basis using the total mass in and out for the hour or overall for the entire test period using the overall mass in and out The gallonage weighted average emission is calculated from the total amount of hydrocarbons emitted divided by the total amount of gasoline dispensed Where Ld Gasoline loaded in gallons For recovery efficiency of the PERMEATOR the feed volume is calculated from the outlet volume outlet hydrocarbon concentration permeate hydrocarbon concentration and inlet hydrocarbon concentration Where HC in Hydrocarbon concentration at the inlet in C 3 HC P Hydrocarbon concentration at the permeate in C 3 Go to Matus Report page 1 2 3 4 Download report Acrobat PDF file Go to Field Testing Summary Table 1 Explanation of Terms Table 1 Field Test Data Summary PERMEATOR On vs Off Graph Actual independent third party test results by Matus Technical Services Inc ARID s Evaporative Loss Model Average V over L Results Gasoline RVP Samples Notes Regarding Field Test Leak Results Field Test Site Photos Lantana Florida Back to ABOUT page 2010

    Original URL path: http://www.aridtech.com/study_lantana_4.html (2016-02-15)
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  • ARID Technologies - Independent Study - Lantana, Florida, Field Testing Summary
    the tank The greatest amount would be released when the tank had 3 inches of backpressure from the PV valve and the PERMEATOR is not in operation There was also leakage at the tank fill points in the beginning of the third day of testing which was also when the PERMEATOR was not in operation This leakage prevented the pressure in the tanks to build up to the level necessary to release the PV valve After the tank fill points were tightened the pressure in the tanks did build up thus causing the PV valve to steadily release gasoline vapors Included in Appendix D is the gasoline dispensing activity Samples of the gasoline in the storage tanks were analyzed and the results are located in Appendix E Instrument calibration records and calibration gas certificates are included in Appendix F Go to Matus Report page 1 2 3 4 Download report Acrobat PDF file Go to Field Testing Summary Table 1 Explanation of Terms Table 1 Field Test Data Summary PERMEATOR On vs Off Graph Actual independent third party test results by Matus Technical Services Inc ARID s Evaporative Loss Model Average V over L Results Gasoline RVP Samples Notes Regarding

    Original URL path: http://www.aridtech.com/study_lantana_5.html (2016-02-15)
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