Description : Recuperated is used mainly as a waste heat recovery system in a ____. a) Boiler b) Billet Reheating Furnace c) Compressor d) None of the above
Last Answer : Billet Reheating Furnace
Description : To reduce the stack loss, heat recovery from flue gas can be done by (A) Preheating of cold stock (B) Preheating of combustion air (C) Steam generation in waste heat boilers (D) All (A), (B) and (C)
Last Answer : (D) All (A), (B) and (C)
Description : Thermo-compressor is commonly used for a) compressing hot air b) flash steam recovery c) distillation d) reverse compression of CO2
Last Answer : flash steam recovery
Description : Calculate the recoverable waste heat (Q, in kCal/hour) from flue gases using the followingparameters: V (flow rate of the substance) 2000 m3/hr r (density of the flue gas): 0.9 kg/m3 Cp (specific heat ... (temperature difference): 120 oC h (recovery factor): 50% a. 21600 b. 43200 c. 25600 d. 34000
Last Answer : 21600
Description : Heat recovery equipment will be most effective when the temperature of flue gas is: a) 250oC b) 200 oC c)400 oC d) 280 oC
Last Answer : 400 oC
Description : What are the benefits or the advantages of waste heat recovery units (WHRU)? a) Reduced Pollution b) Reduced equipment sizes c) Reduced auxiliary energy consumption. d) All of the above
Last Answer : All of the above
Description : A waste heat recovery unit (WHRU) is an_________ that transfers heat from process outputs at high temperature to another part of the process for some purpose, usually increased efficiency. a) Energy recovery heat exchanger b) Energy recovery heat diffuser c) Both ‘a’ and ‘b’ d) None of the above
Last Answer : Energy recovery heat exchanger
Description : A waste heat recovery unit is an energy recovery heat exchanger that transfers heat from process outputs at ........ a) High temperature b) Medium temperature c) Low temperature d) Both a & b
Last Answer : High temperature
Description : One of the key areas for ....... energy saving in existing systems is waste heat recovery. a) Potential b) Kinetic c) Thermal d) Electrical
Last Answer : Potential
Description : Heat recovery provides valuable energy sources and ....... consumption. a) Reduce energy b) Increase energy c) Increase fuel d) Reduce fuel
Last Answer : Reduce energy
Description : A __________ is a type of heat exchange system where water is heated to its' boiling point via combustion of a fuel blown through a tube submerged in water. a. Condensate loop b. Hyperbolic cooling tower c. Steam boiler d. All of above
Last Answer : c. Steam boiler
Description : Data required to plot a moving annual total is ____. a) Production b) Energy c) Both a and b d) None the above
Last Answer : Both a and b
Description : Annual total energy & production chart smoothens out ____ in energy timing of meter readings. a) Errors b) Efficiency c) Accuracy. d) Repeatability
Last Answer : errors
Description : The ultimate aim to encourage the enterprise to save the energy , reduce the production cost and increase economic benefits is ____ A. Energy audit C. Energy saving B. Energy management D. Energy
Last Answer : Energy management
Description : The objective of energy management is ____ A. To achieve and maintain optimum energy procurement and utilization throughout the organization B. To minimize the energy cost without affecting production and quality C. To minimize the environmental effects D. All of the above
Description : During throttling process (a) heat exchange does not take place (b) no work is done by expanding steam (c) there is no change of internal energy of steam (d) all of the above (e) entropy decreases.
Last Answer : Answer : d
Description : The exchanger typically used in the pressurizing section of a dairy plant is a) Plate heat exchanger b) Shell and tube exchanger c) Run around coil exchanger d) All of the above
Last Answer : Plate heat exchanger
Description : In industrial operations fluids with temperature less than __________ are set as the limit for waste heat recovery because of the risk of condensation of corrosive liquids a. 80C b. 100C c. 120C d. 200C
Last Answer : 100C
Description : A high temperature waste heat recovery unit consists of recovering waste heat at temperaturesgreater than _______. a) 200 °C b) 500 °C c) 300 °C d) 400 °C
Last Answer : 400 °C
Description : The waste heat recovery unit (WHRU) is a tool involved in _______. a) Regeneration b) Cogeneration c) Both ‘a’ and ‘b’ d) None of the above
Last Answer : Cogeneration
Description : Techniques of waste heat recovery ....... a) Direct contact condensation b) Indirect contact condensation c) Transport membrane condensation d) All of the above
Description : A waste heat recovery system in industrial process has been key to reduce ....... Consumption. a) Coal b) Fuel c) Biogas d) Oil
Last Answer : Fuel
Description : Nellore to medium temperature waste heat recovery system the most suitable device is ------ a) Economizer b) Heat wheels c) Air preheater d) Recuperate d) Carbonate
Last Answer : Heat wheels
Description : A major advantage of waste heat recovery in industry is a) Reduction in pollution c) Increase efficiency d) None of the above
Last Answer : Reduction in pollution
Description : Recovery of waste heat from hot fluid to fluid is called: a) thermo compressor b) waste heat recovery boiler c) heat Pump d) economizer
Last Answer : heat Pump
Description : Recovery of heat from dryer exhaust air is a typical application of: a) Waste heat recovery boiler b) Heat pump c) Heat wheel d) Economizer
Last Answer : Heat wheel
Description : In a low to medium temperature waste heat recovery system which of the device is most suitable a) Economiser b) Heat wheels c) air preheater d) Recuperator
Description : Air preheater is not used as a waste heat recovery system in a____. a) Boiler b) billet Reheating Furnace c) Heat treatment furnace d) compressor
Last Answer : compressor
Description : Major advantage of waste heat recovery in industry is: a) Reduction in pollution b) increase in efficiency c) Both a & b d) none of the above
Last Answer : Both a & b
Description : The output of the reduce task is typically written to the FileSystem via _____________ a) OutputCollector.collect b) OutputCollector.get c) OutputCollector.receive d) OutputCollector.put
Last Answer : OutputCollector.collect
Description : What types of metals are typically removed via chemical precipitation?
Last Answer : Some of the more common metals or other substances removed via precipitation include: 1) Aluminum 2) Arsenic 3) Barium 4) Cadmium 5) Calcium 6) Trivalent chromium 7) Hexavelent chromium 8) Copper 9) Iron 10) Lead 11) Magnesium 12) Manganese 13) Mercury 14) Nickel 15) Selenium 16) Zinc
Description : For which of the following substances, the internal energy and enthalpy are the functions of temperature only (a) any gas (b) saturated steam (c) water (d) perfect gas (e) superheated steam.
Description : _____ energy sources does not produce carbon dioxide. a) Oil b) Uranium c) Coal d) Natural gas
Last Answer : Uranium
Description : ____ is defined as the set of technologies that can construct physical solid models from CAD data a.Rapid Production b.Rapid prototyping c.Lean Manufacturing d.Artificial intelligence
Last Answer : b.Rapid prototyping
Description : ____ is the bridge between design and manufacturing a.Production planning b.Process Planning c.Product design d.None of the above
Last Answer : b.Process Planning
Description : ____ is a manufacturing philosophy in which different parts are manufactured in a small batchor group based on similarities a.Production technology b.Group technology c.Flexible manufacturing system d.None of the above
Last Answer : b.Group technology
Description : The ……….-induced response of cooling tower is the key factor to improve safety and to reduce tower crack. a) wind c) heat b) water d) steam
Last Answer : wind
Description : A 1-kg steam-water mixture at 1.0 MPa is contained in an inflexible tank. Heat is added until the pressure rises to 3.5 MPa and the temperature to 400°. Determine the heat added. a) 1378.7 kJ b) 1348.5 kJ c) 1278,7 kJ d) 1246,5 kJ Formula: Q = (h2 – p2v2) –(h1 –p1v1)
Last Answer : 1378.7 kJ
Description : From the steam table, determine the average constant pressure specific heat (c) of steam at 10 kPa and45.8 ˚C A.1.79 kJ/ kg-˚C B.10.28 kJ/ kg-˚C C.30.57 kJ/ kg-˚C D. 100.1 kJ/ kg-˚C Formula: h = c T ∆ ∆ From the steam table At 47.7 ˚C h= 2588.1 kJ/ kg At 43.8 ˚C h= 2581.1 kJ/ kg
Last Answer : 1.79 kJ/ kg-˚C
Description : The thermodynamic difference between a Rankine cycle working with saturated steam and the Carnot cycle is that (a) carnot cycle can't work with saturated steam (b) heat is supplied to water at temperature ... heat at two places (d) rankine cycle is hypothetical (e) none of the above.
Last Answer : Answer : b
Description : Which of the following represents the perpetual motion of the first kind (a) engine with 100% thermal efficiency (b) a fully reversible engine (c) transfer of heat energy from low ... its own energy (e) production of energy by temperature differential in sea water at different levels.
Description : A boiler is a device used to create steam by applying __________to water a) Light energy b) heat energy c) Wind energy d) mechanical energy
Last Answer : b) heat energy
Description : ____ structures are typically used in businesses that primarily sell and produce standard products and seldom conduct external projects.
Last Answer : Ans. Functional-type organisation
Description : Jurors typically average just over ____ years of education and an eighth-grade reading level. a. 9 c. 11 b. 10 d. 12
Last Answer : d. 12
Description : Whether superheated steam can be treated like ideal gas ?
Last Answer : Yes.
Description : What Is Steam Trap And Gas Trap?
Last Answer : Steam trap using for removal of Water from Steam. Gas trap using for removal of water from gas.
Description : Producer gas is obtained by A. partial combustion of coal, coke, anthracite coal or charcoal in a mixed air steam blast B. carbonisation of bituminous coal C. passing steam over incandescent coke D. passing air and a large amount of steam over waste coal at about 650°C
Last Answer : Answer: A
Description : Water gas is obtained by passing air and a large amount of steam over waste coal at about 650°C. A.Correct B.Incorrect
Last Answer : Answer: B
Description : The efficiency of Carnot cycle is maximum for (a) gas engine (b) well lubricated engine (c) petrol engine (d) steam engine (e) reversible engine.
Last Answer : Answer : e