00500

Fig. 30-27 Electric Rate Summary for Example 1.

Fig. 30-27 Electric Rate Summary for Example 1.

The first-cost premium for the electric unit with cycling control versus the base case electric unit with modulation control is $30,000. The first-cost premium for the gas-fired reciprocating engine unit is $130,000 versus the electric unit with modulation control and $160,000 versus the electric unit with cycling control.

Figure 30-28 shows the assumed load during annual hours in each of the electric rate periods. Figure 30-29 shows the percent of full-load power required for operation of each of the electric units under varying load. Input power and annual hours of operation are used to determine annual energy use and demand, with costs calculated at the assumed billing rate.

Figure 30-30 shows energy use and operating cost for the electric unit under modulation control. Energy use and operating cost for the electric unit under cycling control is shown in Figure 30-31. With an annual operating cost savings of $20,726, the incremental investment of

Load

Hours

Guide to Alternative Fuels

Guide to Alternative Fuels

Your Alternative Fuel Solution for Saving Money, Reducing Oil Dependency, and Helping the Planet. Ethanol is an alternative to gasoline. The use of ethanol has been demonstrated to reduce greenhouse emissions slightly as compared to gasoline. Through this ebook, you are going to learn what you will need to know why choosing an alternative fuel may benefit you and your future.

Get My Free Ebook


Post a comment