Overview

In this practice test set, you will get a total 5 five tests to solve and practice. All this five practice test questions are related to the BEE Energy Auditor and Energy Manager Exam. The Questions which are included in the five test is in MCQ format. Most of the relevant and previous years questions are included in the test. For the numerical the shortest solution is provided so, it will be easy for you to study and practice the various questions. The practice tests include the following point-based questions: Fuels and CombustionBoilersSteam SystemFurnacesInsulation and RefractoriesFBC BoilersCogenerationWaste heat recovery Heat ExchangersSample Questions:1] An oil fired reheating furnace has an operating temperature of around 1000 °C. Average furnace oil consumption is 330 litres/hour. Flue gas exit temperature after the air preheater is 820 °C. Combustion air is preheated from ambient temperature of 35 °C to 215°C through the air preheater. The other data are as given belowSpecific gravity of oil = 0.92Calorific value of oil = 10,200 kcal/kgAverage O2 percentage in flue gas = 13.5 %Theoretical air required = 14 kg of air per kg of oilSpecific heat of air = 0.23 kcal/kg°CSpecific heat of flue gas = 0.25 kcal/kg°CThe sensible heat carried away by the exhaust flue gases in kcals/hr and as a percentage of the energy input.Solution: Fuel input = (330 litres/hr x 0.92 kg/litre) = 303.6 kg/hrEnergy Input = (303.6 kg oil/hr x 10,200 kcals/kg oil) = 30,96,720 kcal/hrExcess air = [O2 x 100/(21-O2)] = (13.5 x 100)/(21 - 13.5) = 180 %Theoretical air required = 14 kg of air/kg of oilActual mass of air required = 14 x (1 + 180 /100) = 39.2 kg air/kg of oilMass of flue gas (m) = (39.2 + 1) = 40.2 kg flue gas/kg oilSpecific heat of flue gas (Cp) = 0.25 kcal/kg.oCSensible heat loss in the flue gas = (m x Cp x ΔT)flue gas = (40.2 x 0.25 x (820-35)) Sensible heat loss in the flue gas= 7889.3 kcal/kg of oilSensible heat loss in the flue gas= (7889.3 kcal/kg of oil x 303.6 kg oil/hr)Sensible heat loss in the flue gas = 2395176.3 kcal/hrSensible heat loss in the flue gas as % heat loss to input energy = (2395176.3 / 30,96,720) x 100 = 77.35 %Money Back Guarantee:The practice test involves a diversity of questions, and i am definitely sure i will help you in your exam preparations. And you will pass the exams with this practice test. About Author:Author Mr. Kiran Beldar is BEE Certified Energy Manager and he himself has cleared the exam. He is a professor at Mumbai University. His vast experience is passed on through this practice test.

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