Pump Efficiency and Cost Analysis

The video tutorial explains how to calculate electrical cost savings by replacing an old inefficient pump with a newer, more efficient one. It covers the problem statement, motor efficiency, power calculations, and cost savings. The tutorial provides a step-by-step approach to determine the annual cost savings by comparing the power requirements of the old and new motors, considering their efficiencies and the cost of electricity.

What is the main focus of the problem discussed in the video?

• Understanding the mechanics of a pump

• Learning about different types of pumps

• Calculating electrical cost savings by replacing a pump

• Calculating the cost of a new pump

What is the efficiency of the existing motor?

• 86%

• 75%

• 94%

• 100%

How much does electricity currently cost per kilowatt hour?

• $0.078

• $0.100

• $0.086

• $0.094

What is the target outcome of the problem?

• Determine the efficiency of the new motor

• Estimate the lifespan of the new pump

• Calculate the total cost of the new pump

• Find the cost savings per year

What percentage of the time does the motor run?

• 75%

• 50%

• 100%

• 86%

What formula is used to calculate brake horsepower?

• Brake horsepower = power to the motor / motor efficiency

• Brake horsepower = motor efficiency x power to the motor

• Brake horsepower = power to the motor x motor efficiency

• Brake horsepower = motor efficiency / power to the motor

What is the brake horsepower of the new motor?

• 116.28 horsepower

• 106.38 horsepower

• 94 horsepower

• 100 horsepower

What is the difference in horsepower between the old and new motors?

• 9.9 horsepower

• 11.9 horsepower

• 10.9 horsepower

• 8.9 horsepower

What is the equivalent of one horsepower in kilowatts?

• 0.846 kW

• 1.746 kW

• 0.746 kW

• 1.846 kW

What is the annual cost savings achieved by replacing the pump?

• $3,785

• $2,785

• $4,785

• $5,785