A remote property has an ac load profile that can be approximated by the following graph: Load Profile for Remote Property Z 4 3 1 -23456r∞ 02N345 Hour of day What is the average daily load for this application (in kWh/day)? A switched diesel hybrid system is to be used to meet this load, and it will use a 4.5 kW diesel generator. The fuel consumption for this diesel genset is given by the following equation: F = 0.37 + 1.2 * X F is the fuel consumption in litres per hour X is the load expressed as a fraction of the rated diesel output where When the diesel operates, it operates at 90% of its rated output. For how long would the diesel need to operate to ensure that sufficient energy was stored in the battery to cover the rest of the twenty four hour period when the diesel is not operating? Assume that a time clock starts the diesel at 4pm each day. Also assume that the battery efficiency is 80%, the average inverter efficiency is 84% and the battery charger efficiency is 88%. Describe the method that you have used to calculate the operating hours of the diesel generator. Provide sufficient information to allow the marker to see how you arrived at your answer. What is the average daily fuel consumption for the genset in this switched hybrid situation? Load (kW) 2. 17 18

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter12: Power System Controls

Section: Chapter Questions

Problem 12.5P

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$A remote property has an ac load profile that can be approximated by the following graph: Load Profile for Remote Property Z 4 3 1 -23456r∞ 02N345 Hour of day What is the average daily load for this application (in kWh/day)? A switched diesel hybrid system is to be used to meet this load, and it will use a 4.5 kW diesel generator. The fuel consumption for this diesel genset is given by the following equation: F = 0.37 + 1.2 * X F is the fuel consumption in litres per hour X is the load expressed as a fraction of the rated diesel output where When the diesel operates, it operates at 90% of its rated output. For how long would the diesel need to operate to ensure that sufficient energy was stored in the battery to cover the rest of the twenty four hour period when the diesel is not operating? Assume that a time clock starts the diesel at 4pm each day. Also assume that the battery efficiency is 80%, the average inverter efficiency is 84% and the battery charger efficiency is 88%. Describe the method that you have used to calculate the operating hours of the diesel generator. Provide sufficient information to allow the marker to see how you arrived at your answer. What is the average daily fuel consumption for the genset in this switched hybrid situation? Load (kW) 2. 17 18$

Transcribed Image Text:A remote property has an ac load profile that can be approximated by the following graph: Load Profile for Remote Property Z 4 3 1 -23456r∞ 02N345 Hour of day What is the average daily load for this application (in kWh/day)? A switched diesel hybrid system is to be used to meet this load, and it will use a 4.5 kW diesel generator. The fuel consumption for this diesel genset is given by the following equation: F = 0.37 + 1.2 * X F is the fuel consumption in litres per hour X is the load expressed as a fraction of the rated diesel output where When the diesel operates, it operates at 90% of its rated output. For how long would the diesel need to operate to ensure that sufficient energy was stored in the battery to cover the rest of the twenty four hour period when the diesel is not operating? Assume that a time clock starts the diesel at 4pm each day. Also assume that the battery efficiency is 80%, the average inverter efficiency is 84% and the battery charger efficiency is 88%. Describe the method that you have used to calculate the operating hours of the diesel generator. Provide sufficient information to allow the marker to see how you arrived at your answer. What is the average daily fuel consumption for the genset in this switched hybrid situation? Load (kW) 2. 17 18

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