You are working as an engineer a company. During an energy audit, you realize that your company has a 40 kw transformer that is connected all the time. While inspecting the transformer, you calculate the core losses from the device to be approximately 5% of its rated capacity. Assume that the electrical costs are 10 C/kWh and 10 USD/KW/month of peak demand, that the average building use is 12 h/month, and that the average month has 720 hours. Estimate the annual cost savings from installing a switch that would energize the transformer only when the building was being used. The transformer is used h/month, and it can be turned off for the remaining of the month. That is h/month. That means the transformer can be turned off for h/year. The core losses from the tansformer is kW. Installing a switch to turn on the transformer only when the building is used results: Annual energy savings of kWh/year. Annual cost savings of USD/year. Does it make sense to use this strategy?
You are working as an engineer a company. During an energy audit, you realize that your company has a 40 kw transformer that is connected all the time. While inspecting the transformer, you calculate the core losses from the device to be approximately 5% of its rated capacity. Assume that the electrical costs are 10 C/kWh and 10 USD/KW/month of peak demand, that the average building use is 12 h/month, and that the average month has 720 hours. Estimate the annual cost savings from installing a switch that would energize the transformer only when the building was being used. The transformer is used h/month, and it can be turned off for the remaining of the month. That is h/month. That means the transformer can be turned off for h/year. The core losses from the tansformer is kW. Installing a switch to turn on the transformer only when the building is used results: Annual energy savings of kWh/year. Annual cost savings of USD/year. Does it make sense to use this strategy?
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
Chapter3: Power Transformers
Section: Chapter Questions
Problem 3.57P: A two-winding single-phase transformer rated 60kVA,240/1200V,60Hz, has an efficiency of 0.96 when...
Related questions
Question
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Step by step
Solved in 3 steps with 3 images
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, electrical-engineering and related others by exploring similar questions and additional content below.Recommended textbooks for you
Power System Analysis and Design (MindTap Course …
Electrical Engineering
ISBN:
9781305632134
Author:
J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma
Publisher:
Cengage Learning
Delmar's Standard Textbook Of Electricity
Electrical Engineering
ISBN:
9781337900348
Author:
Stephen L. Herman
Publisher:
Cengage Learning
Power System Analysis and Design (MindTap Course …
Electrical Engineering
ISBN:
9781305632134
Author:
J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma
Publisher:
Cengage Learning
Delmar's Standard Textbook Of Electricity
Electrical Engineering
ISBN:
9781337900348
Author:
Stephen L. Herman
Publisher:
Cengage Learning