A small manufacturing plant on a single three-phase service consumes 126,000 kWh of electrical energy over a monthly billing period. Peak demand is typically measured at 400 kW during the day and 200 kW at night. However, because of an abnormality in plant operation, demand for power increases to 1200 kW over a 15-min period on one day during the month. Determine the total monthly charge based on the rate schedule provided in Table 17.3. TABLE 17.3 A SAMPLE RATE SCHEDULE FOR COMMERCIAL AND INDUSTRIAL OPERATIONS Public Utility Company, Inc. General Commercial and Industrial Rate Schedule (Demand) Service Charge Single Phase P 305.00 P 518.00 Three Phase Energy Charge P 4.88 per kWh P 4.43 per kWh P 4.11 per kWh P 3.56 per kWh P 3.29 per kWh First 1000 kWh of the month Next 2000 kWh of the month Next 5000 kWh of the month Next 10,000 kWh of the month Additional kWh of the month Demand Charge P 442.50 per kw per month P 397.50 per kW per month P 375.00 per kW per month P 360.00 per kW per month * Demand charge is based upon the greatest billing demand month First 25 kW of the month Next 475 kW of the month Next 1000 kW of the month Additional kW of the month for that month and eleven successive months.

A small manufacturing plant on a single three-phase service consumes 126,000 kWh of electrical energy over a monthly billing period. Peak demand is typically measured at 400 kW during the day and 200 kW at night. However, because of an abnormality in plant operation, demand for power increases to 1200 kW over a 15-min period on one day during the month. Determine the total monthly charge based on the rate schedule provided in Table 17.3. TABLE 17.3 A SAMPLE RATE SCHEDULE FOR COMMERCIAL AND INDUSTRIAL OPERATIONS Public Utility Company, Inc. General Commercial and Industrial Rate Schedule (Demand) Service Charge Single Phase P 305.00 P 518.00 Three Phase Energy Charge P 4.88 per kWh P 4.43 per kWh P 4.11 per kWh P 3.56 per kWh P 3.29 per kWh First 1000 kWh of the month Next 2000 kWh of the month Next 5000 kWh of the month Next 10,000 kWh of the month Additional kWh of the month Demand Charge P 442.50 per kw per month P 397.50 per kW per month P 375.00 per kW per month P 360.00 per kW per month * Demand charge is based upon the greatest billing demand month First 25 kW of the month Next 475 kW of the month Next 1000 kW of the month Additional kW of the month for that month and eleven successive months.

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

10th Edition

ISBN:9781337399128

Author:Russell E. Smith

Publisher:Russell E. Smith

Chapter17: Commercial And Industrial Air-conditioning Control Systems

Section: Chapter Questions

Problem 6RQ

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