1600 efficacy 70 23 (8 hours! (220 days)(23 W)i day ( 1 kW $0.09 (1000 w ji kWh. cost = $3.64 For the generic incandescent 100 W light bulb: 1500 efficacy 15 100 8 hours (220 days)(100 W) day 1 kW_}{ $0.09) (1000 W j{ kWh } cost = = $15.84 It should be obvious that the CFL light is more efficient and economical to operate than the generic incandescent.

1600 efficacy 70 23 (8 hours! (220 days)(23 W)i day ( 1 kW $0.09 (1000 w ji kWh. cost = $3.64 For the generic incandescent 100 W light bulb: 1500 efficacy 15 100 8 hours (220 days)(100 W) day 1 kW_}{ $0.09) (1000 W j{ kWh } cost = = $15.84 It should be obvious that the CFL light is more efficient and economical to operate than the generic incandescent.

Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)

10th Edition

ISBN:9781337399128

Author:Russell E. Smith

Publisher:Russell E. Smith

Chapter2: Basic Electricity

Section: Chapter Questions

Problem 34RQ: What is the Btu/hour output of an electric heater rated at 15 kilowatts? a. 51.15 Btu/hour b. 51,150...

See similar textbooks

Similar questions

A three-blade wind turbine has a speed of 140 rpm for a rated speed of 8 m/s, coefficient of power= 0.43, mechanical efficiency of 90% and electrical efficiency of 82%. Estimate the electrical output of a turbine having a blade length of 12 m. Take Air density= 1.226kg/m3.
Hey Given R = [31] kΩ, please help me to calculate calculate Vo NB: May you please leave me with your WhatsApps contact no. or please be available at around 08:25 South African time. I'll need your help ASAP. MINE: 0768632486
Suppose the cost of an incandescent bulb is 28 cents and that electricity costs 10.5 cents/kWh. Compact fluorescent lightbulbs (CFL), while they are more expensive, use 1/10 of the power for the same amount of illumination. What would be the maximum cost (in dollars) of a CFL such that the total cost (investment plus operating) would be the same for both CFL and incandescent 60 W bulbs? Assume both lightbulbs run for 1000 h.
The equivalent fuel reserve of a certain country for power generation is 3 x 10 6 MW – year. The present peak power demand is 200 GW, and the expected power consumption growth rate is 2.1 percent. How long in month will the fuel reserve last ?
A 54.52-hp motor that has an efficiency of 90.72% is soon to be obsolete. It will be replaced by a high efficiency motor which is 96.08% efficient. The motor operates 4,378 hours a year. Taking the cost of electricity to be P8.92 per kWh, compute for the annual savings due to the installation of the high-efficiency motor instead of the standard motor. Round your answer into two decimal places only.
500 MW Medupi power station generates electricity using coals of calorific value of 4890 kcal/kg. The thermal and electrical efficiency of the power station are 22.1% and 87.4%, respectively. Instructions:round off to 2 decimal places 1. Determine the overall efficiency of the power station (%) .And Determine the electrical energy produced per hour (kWh) 2. Determine the heat of coal combustion per hour (kcal) .And Determine the amount of coals consumed per hour (tonnes) 3. Determine the amount of coals consumed per day if the daily load factor is 55%. (tonnes) 4. Determine the percentage savings of coal weight if the calorific value increases by 4% when purchasing new advanced coal.
During its use, the temperature of the aluminum wire has increased from room temperature to 80 degree Celsius. Calculate the increase in the resistivity of the aluminum wire. The resistivity of the aluminum at room temperature (20 degree C) is 2.75 x 10^(-8) ohm-meter, and the temperature coefficient of resistivity is 0.00039/degree C.
GaAs solar cell delivered maximum power of 300 W/m2, open circuit voltage Voc = 0.70 Volts and short circuit current, Isc = 500 A/m2. Calculate the fill factor at room temperature (VT = 25 mv).
Determine the thermal efficiency of a thermal power station and it fuel bill per annum for the following data, Maximum demand = 30000KW Load factor = 50% Fuel consumption = 0.75kg/unit Boiler efficiency = 80% Turbine efficiency = 85% Price of 1litre of fuel = 35.8Gh
A steam turbine generator is designed to generate 5.5MW of electrical power at a 6300V, 50HZ and 0.95 lag. The steam turbine requires 28 tons per hour of a high-pressure steam of temperature and pressure of 4000C and 40 bar. The steam turbine is a condensing type. If the temperature of the exhaust steam is 400 C (a).Calculate the efficiency of the steam turbine (b)What are the three (3) major advantages and disadvantages of the steam turbine? (c )What are the methods of improving efficiency of the Brayton cycle?
Suppose: Average Electricity Consumption of Fossil Fuel: 3,833kWh per year. Average Electricity Rate: 26.3 usd/kWh. Price Level is the Same for Next 30 years. The System Size of New Solar Installation: 5kW Capacity factor: 13.7% Duration: 30 years Electricity Output Drop Every Year: 0.5% 30% of Solar Output is Used 70% is Sold Revenue: 17 usd/kWh for the First 10 years 9.5 usd/kWh for the Following 20 years. Initial Cost of Solar Installation is 280,000 usd per kW ( 5kW system costs 5 times 28,000 usd) Maintenance Cost Every 4 Years: 29,000 usd. Component Replacement Cost Every 20 Years: 224,000 usd. Calculate the Levelized Cost of Electricity (LCOE) at Discount Rates at 2%. Show work.
1.) An incandescent lamp, rated at 100 watts, gives a certain amount of light when placed across the 120V ac power line. Would the amount of light increase, decrease or remain the same, when the lamp is placed across a 120V dc power line? Discuss. 2.) Explain what is meant by effective current and effective voltage.