Case study:The annual energy consumption by an industry is depicted in the piechart shown below. The management wants to implement energyconservation measures to reduce energy consumption.How would you go about in the implementation of this energyconservation project?10% Other6% Computers3% OfficeEquipment3% Refrigeration2% Water Heating25% Lighting35% Heating10% Cooling6% Ventilation

Based on the pie chart, here's a possible approach to implementing energy conservation project in…

Answered: Case study: The annual energy…

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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A meeting hall in an organization is to be provided with a lighting installation. The hall is 30 m × 20 m × 8 m (high). The mounting height is 5 m and the required level of illumination is 144 lm/m2. Design a lighting system for the hall with the given data. Lumens/watt for 200-W lamp = 12 and Lumens/ watt for 500-W lamp = 16. Utilization coefficient = 0.6 Maintenance factor = 0.75 space/height ratio=1 Using metal filament lamps, estimate the following: Draw the spacing layout of these lamps State the reason if any of these 2 lamps cannot be arranged in the hall with the given specification. What is the significance of ‘room surface maintenance factor’ and ‘utilization factor’ in the lighting design
Urgent. An office space measures 50ft x 90ft with 16ft high walls. A 1.25 air changes per hours is desired for this space. Find the heat loss (in btuh) when the indoor temperature is 70°F and the outdoor temperature is 36°F. Select one: a. Q = 56,100 btuh b. Q = 44,880 btuh c. Q = 37,736 btuh d. Q = 75,900 btuh e. Q = 64,350 btuh
A meeting hall in an organization is to be provided with a lighting installation. The hall is 30 m × 20 m × 8 m (high). The mounting height is 5 m and the required level of illumination is 144 lm/m2. Design a lighting system for the hall with the given data. Lumens/watt for 200-W lamp = 12 and Lumens/ watt for 500-W lamp = 16. Utilization coefficient = 0.6 Maintenance factor = 0.75 space/height ratio=1 Using metal filament lamps, estimate the following: Flux Luman output per 200 W lamp Luman output per 500 W lamp Number of 500W lamps required Number of 220W lamps required Draw the spacing layout of these lamps State the reason if any of these 2 lamps cannot be arranged in the hall with the given specification. What is the significance of ‘room surface maintenance factor’ and ‘utilization factor’ in the lighting design
A building in a location is equipped with a heat pump system that is used for space heating in winter and cooling in summer. The seasonal COPs of the heat pump in winter and summer are estimated to be 2.2 and 2.8, respectively. The design heating load of the house is calculated to be 750,000 kJ/h for an indoor temperature of 25°C. The unit cost of electricity is $0.09/kWh. The annual heating degree-days in this location is 2400°C-days and the 97.5% winter design temperature is −9°C. The cooling degree-days are 1100°C-days. Determine the annual electricity consumption and its cost for heating and cooling of this house. Assume the same overall heat loss coefficient for winter and summer.
A container equipped with a resistance heater and a mixer is initially filled with 3.6 kg of saturated water vapor at 120°C. Now the heater and the mixer are turned on; the steam is compressed, and there is heat loss to the surrounding air. At the end of the process, the temperature and pressure of steam in the container are measured to be 300°C and 0.5 MPa. The net energy transfer to the steam during this process is
&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&& Water is pumped from a sump where the pressure is atmospheric to a height of 3m, water temperature is 40 deg C (Pv = 7.3845kpa), loss head dues to friction is 0.75m. Find the available NPSH of the pump a. 6.2m b. 7.2 m c. 5.8 m d. 8.8 m
Imagine you are driving a car up Pike’s Peak in Colorado. To raise a car weighing 1000 kilograms a distance of 100 meters would require about a million joules. You could raise a car 12.5 kilometers with the energy in a gallon of gas. Driving up Pike's Peak (a mere 3000-meter climb) should consume a little less than a quart of gas. But other considerations have to be taken into account. Explain, in terms of efficiency, what factors may keep you from realizing your ideal energy use on this trip.
Vbatt=25 VC1=90 ?CC2=75 ?CC3=60 ?CR1=160 ΩR2=120 Ωt2=21.6 msect3=27 msecConsider the circuit shown below which shows a battery connected to some resistors and capacitors along with some switches which will be toggled opened or closed at different times. The components are listed above. The capacitances are in microCoulombs (?C), the resitances are in Ohms (Ω), and the times are in milliseconds (msec). A stopwatch is started at time t1=0 ms. At that time, switch S1 is closed and all other switches are open and the capacitor is allowed to charge up.(a). What is the charge (in uC) on C1 at the time the stopwatch reads t2=21.6 ms?Ans: 1750 uC(b). What is the current (in mA) through R1 at t2=21.6 ms?Ans: 34.9 mA(c). What is the voltage (in V) across R1 at t2=21.6 ms?Ans: 5.58 V(d). What is the voltage (in V) across C1 at t2=21.6 ms?Ans: 19.4 V(e). What is the energy (in mJ) in C1 at t2=21.6 ms?Ans: 17.0 mJThen, immediately at time t2=21.6 on the stopwatch, switch S1 is thrown open and…
A 75 MW steam power station uses coal of calerific value of 6400 kcal/kg. Thermal efficiency of the station is 30% while clectrical efficiency is 80%. Calculate the coal consumption per hour when the station is delivering its full output. ANSWER: 142 tons SHOW YOUR COMPLETE SOLUTION
Design a system based on renewable energy sources that you think would work best for a small private college. A. Your design must address energy generation and storage and B. should include a critical discussion of the advantages and disadvantages of your system. C. Draw at least one figure or diagram to support your answer
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6.) A room measures 4mx7mx5m and the air in it has to be always kept 20 degree celciuslower than that of theincoming air. The air inside has to be renewed every 30 minutes. Assuming 75% efficiency, calculatethe HP rating of an air-conditioning unit suitable for this purpose. Take specific heat of air as 0.24 andits density as 1.27 kg/m^3.

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