The refuse-derived-fuel plants (RDF) always have low power production efficiency. A waste incineration plant uses 1000 metric tonnes (1000 megagrams) of coal per day. The energy value of the waste is 14,000 kJ/kg (kiloJoules/kilogram). The plant produces 106 kWh of electricity each day. What is the efficiency of the waste incineration plant?

Q: The figure below shows a pump delivering 0.014 m3/s of crude oil (SG = 0.85) from an underground…

A:

Q: 2. The maximum amount of solid waste collected per day for one week is presented below. All the…

A:

Q: 5. Estimate the daily amount of magnesium hydroxide needed for FGD for a 350 MW power plant (0.305…

A: Overall efficiency ηoverall=0.305efficiency to utilize magnesium hydroxide η=95%=0.95caloric…

Q: Determine the air requirement expressed in kilograms per tonne of waste for the complete oxidation…

A: Chemical reaction of the waste composition is

Q: It is found in a water sample that it has insufficient alkalinity and therefore soda ash (Na2CO3) is…

A:

Q: An industry wants to locate a chemical plant in your city, they expect to generate 25,000 gal/hr of…

A: k = 0.75/hr

Q: A steel pipe is having an ID of 13.25" is to be designed to carry 48,000 bbl of oil per day from a…

A: We have to determine the value of the actual power requirement (in hp) if the efficiency is 65% and…

Q: An electrostatic precipitator (ESP) with 5600 m? of collector plate area is 96 percent efficient in…

A:

Q: A 1000 MW power plant is operating at 38% efficiency. The ash and sulphur content in the coal used…

A:

Q: When 1 cu ft of natural gas is burned, 1,050 Btu of heat are produced. In oneday, a building uses…

A: Natural gas of 1 cu ft burn causes =1050 Btu heat produced Heat used by building = 761250 Btu To…

Q: Dusty air at a fertilizer plant flows through a 70%-efficient cyclone and then through an ESP. The…

A: Solution Find the dust load of the air exiting the cyclone and entering the ESP C=100-70100×50= 15…

Q: Environmental Engineering: Cyanide is used in the production of intermediates in the pharmaceutical…

A: Given:The constant rate (k) at 170ºC is 8 hr-1.Consider the volume of the plug flow reactor is…

Q: A wastewater contains 0.2 M pyruvate. Estimate the volume of methane in liters (STP) that would be…

A: Given, 0.2M pyruvate t = 15 days

Q: A certain city has a solid waste generation rate of 0.59 kg/capita-day. Supposed that the bulk…

A:

Q: A 600 MW coal-fired power plant has an overall thermal efficiency of 38%. It is burning coal that…

A: Given data: Capacity of the coal-fired power plant = 600 MW Overall thermal efficiency = 38% Heating…

Q: 75 g of CO2 and 40 g of CH4 are produced from the decomposition of municipal solid waste (MSW) with…

A: Given data: 75 gm CO2,40 gm CH4,formula weight of MSW=150 gm,2 million people,MSW production…

Q: Determine the amount of SO2 released from the combustion of 1500 gallons of waste oil (135,000…

A: The amount of SO2 released from the combustion of 1500 gallons of waste oil (135,000 BTU/gal) with…

Q: An average American consumes approximately 10% kJ of energy per day. The average life expectancy of…

A:

Q: An activated sludge process plant of 90% efficiency is designed for a city of population 5,00,000…

A:

Q: Many post-consumer polymer articles are recyclable. However, some non-recyclable waste materials can…

A: The majority of post-consumer polymer products are recyclable, and those that cannot be recycled are…

Q: A county generates 1 million ton of municipal solid waste after recycling every year. The town is…

A: It can be said that Landfill decomposition option is better to produce less GHG. Hence, Landfill…

Q: a coal with the following composition (C = 75.9 wt%, H = 5 wt %, O = 8.6 wt%, N = 0.5 wt%, and ash =…

A: Given:- C = 75.9 wt%, H = 5 wt %, O = 8.6 wt%, N = 0.5 wt%, and ash = 10 wt% To find:- NO2 gases…

Q: A petroleum refinery processes 100,000 barrels of crude oil per day and operates with an energy…

A:

Q: A waste water plant treats 28800 m/day of sewage water of density 1000 kg/m3 and kinematic viscosity…

A: Given: The discharge is 28800 m3/day. The density of water is 1000 kg/m3. The kinematic viscosity is…

Q: The Energy Efficiency Rating (EER) of an air-conditioning unit is defined asthe ratio of the heat…

A: Given; The amount of heat removed is 5,170 Btu. The power of unit is 470 watts. The Energy Efficient…

Q: The principal component of LPG is butane, C4H10 (g). If combustion of 1 mole of butane produces 126…

A: The combustion of 1 mole of butane produces 126 kJ of heat.

Q: Problem 3. A nuclear-power station produces 750 MW per year as useful energy. The energy costs…

A:

Q: Consider a 400-MW, 32 percent efficient coal-fired power plant that uses cooling water withdrawn…

A: We are authorized to answer three subparts at a time, since you have not mentioned which part you…

Q: Consider a 400-MW, 32 percent efficient coal-fired power plant that uses cooling water withdrawn…

A: We are authorized to answer three subparts at a time, since you have not mentioned which part you…

Q: The water behind a Dam is 206 m higher than the River below it. The water in the dam is allowed to…

A:

Q: Explain the construction, working, advantages and disadvantages of a floating drum biogas plants. in…

A: Biogas plants are used to convert cattle dung to usable biogas. This biogas is used as a fuel for…

Q: , Conduct a mass balance to determine the amount of (a) ash, (b) water and (c) dry exhaust produced…

A: Given, Waste supply rate = 5000 tons/day Moisture content (w) = 30% Ash content = 15%     NOTE : As…

Q: The maximum amount  of solid wastes collected per day for one week is presented below. All the solid…

A:

Q: You are studying a reactor that receives a particular reactive contaminant which follows a zero…

A: Given: Reaction rate, k=0.5 mg/L min [A]0=10 mg/L [A]t=1 mg/L Average velocity=10 cm/sec

Q: A new coal-fired power plant has been built using a sulfur emission control system that is 70…

A: Given data: Efficiency of the power plant (η)=70%=0.70Amount of coal burned (C) =15000…

Q: A small coal-fired power plant sends 2.4 m3/s of flue gas through its electrostatic precipitation…

A: collection area ≅72m2explanation is given in below step

Q: power (in kW) recovered in the turbine

A: Given:' Density of water= 9810 N/m3 = 1000.34 kg/m3 g = 10 m/s2 Efficiency of turbine and pump = 70%…

Q: The wastewater to be treated is flowing into the treatment plant at a rate of 2670 m3/day. The…

A: Given- η=98%K=0.145Q=2670m3/day

Q: A 98% efficient ESP follows the Deutsch equation. If the gm flow rate changes and the efficiency…

A: A=collection area  Q=flow rate w=drift velocity alpha= efficiency of ESP

Q: Environmental Engineering: Water Treatment Please consider each of the following points: a.…

A: We are authorized to answer three subparts at a time, since you have not mentioned which part you…

Q: 2. The oxygen consumption of an activated sludge plant is 60 g O2/L.d for the degradation of carbon…

A: solution  given oxygen consumption by activated sludge = 60g O2/L.d 50% of this quantity = 0.5 x 60…

Q: aerobic digestion system generates 10,000 m3 (353,150 standard ft3) of biogas per day. The produced…

A: Given:- biogas=10,000 m3/day To find:- electricity generated

Q: A factory is discharging wastewater containing 1 mg/L chromium into a lake. The wastewater discharge…

A: Given that: Concentration of chromium in wastewater, C=1mg/L                     Discharge rate of…

Q: Solid Waste Management On daily basis, and for six months a family brought to the home 60.0 lb of…

A: Total consumer goods=60lb Food eaten=10lb Food stored=6lb

Mechanical Processes

In civil engineering, the materials have to undergo a series of manufacturing processes before using them in construction and structural applications. These manufacturing processes form the foundation stone of mechanical processes. Some of the civil engineering materials such as bars, metallic beams, metallic columns, surveying equipment, earthmovers, overhead cranes, structural and construction components, and even cement that is the most fundamental construction component need to undergo different manufacturing processes before they are ready to use. These processes are mechanical.