A plume from a smokestack has a pollutant emission rate of 1 kg/sec, at an exit velocity of 10 m/sec and a temperature of 50 degrees Celsius, The stack height is 20 m, its radius is 1.5 m, and the plume is known to rise under moderately stable conditions (the measured lapse rate is -6.5 degrees Celsius/ km). The measured wind speed is 4 m/sec and the air temperature is 27 degrees celsius. Find the effective stack height to use for the Gaussian plume model.
A plume from a smokestack has a pollutant emission rate of 1 kg/sec, at an exit...
Show all work Using the Briggs equation, calculate the effective stack height for a stack plume centerline at a downwind distance of 1800 ft. Stack exit gas flow: 300 cubic feet/sec, cfs (already adjusted for stack conditions,_no adjustment necessary.). 0 Exit temp 250 F Stack height 50 m Ambient temp 70 F Wind velocity 1 m/sec Atmospheric Stability B Stack diameter 1.3 m 0 Atmospheric Stability B Stack diameter 1.5 m
A new industrial facility is proposed at a location 5 km upwind from an existing multi- family residential development. The exhaust of the factory emits chloropicrin at the rate of 2500 g/s. The detection threshold for chloropicrin is 10 μg/m2. The atmospheric stability conditions for the area changes between stability classes D&F and the average wind speed is 5.0 m/s. Would should be the minimum recommended height for the smoke stack of that industrial facility? (Hint: we are concerned with...
2. Before vehicle emissions were well-regulated co emissions were 66 g/mile. Assume this emission rate applies for an airshed. The airshed has dimensions of 9 km by 18 km with wind speeds of 1.5 m/s parallel to the longer dimension. There is a temperature inversion at 100 m. The average vehicle miles traveled is 800,000 miles each hour between 5 AM and 8 PM, and the concentration of CO before the morning rush hour and the incoming wind concentration are...
URGENT!! A rural power plant with no fly ash removal equipment burns 300 tons of coal per day. Using the emission rate given in the table 1 for a coal containing 9 percent ash and fired on a spreader stoker, determine the deposition rate for 50 um particles having a density of 1.5 g/cm3 at distances of 1 and 3.5 km downwind from a stack assuming that 10 percent of the emissions are approximately 50 um in diameter. The effective...
summarizr the followung info and write them in your own words and break them into different key points. 6.5 Metering Chamber: 6.5.1 The minimum size of the metering box is governed by the metering area required to obtain a representative test area for the specimen (see 7.2) and for maintenance of reasonable test accuracy. For example, for specimens incorporating air spaces or stud spaces, the metering area shall span an integral number of spaces (see 5.5). The depth of...
summatize the following info and break them into differeng key points. write them in yojr own words apartus 6.1 Introduction—The design of a successful hot box appa- ratus is influenced by many factors. Before beginning the design of an apparatus meeting this standard, the designer shall review the discussion on the limitations and accuracy, Section 13, discussions of the energy flows in a hot box, Annex A2, the metering box wall loss flow, Annex A3, and flanking loss, Annex...
10. Write a one-page summary of the attached paper? INTRODUCTION Many problems can develop in activated sludge operation that adversely affect effluent quality with origins in the engineering, hydraulic and microbiological components of the process. The real "heart" of the activated sludge system is the development and maintenance of a mixed microbial culture (activated sludge) that treats wastewater and which can be managed. One definition of a wastewater treatment plant operator is a "bug farmer", one who controls the aeration...