#Ssc service utility 4.50 series#

In this table, we could have calculated the present worth of each individual item of future expense.

Sum of PW = PW of Solar Energy System = $24,200 Ratio of assessed value of the system in the first year to the initial investment, V 1В =В 1. Ratio of first-year miscellaneous costs to the initial investment, M 1В =В 0.01. 12.13ДЇor a residential solar space heating system, the following information is given:

The first year fuel cost rate is в‚¬11.00/GJ and inflates at 8% per year and fuel costs are discounted at a rate of 6%. 12.12ДЇind the undiscounted and discounted payback times of a solar energy system that coversВ 73% of an annual load of 166В GJ and costs в‚¬13,300. Repeat Exercise 12.10 using the P 1, P 2 method. Maintenance and parasitic costВ =В 0.5% increasing at 1% per year.ДЄlso estimate the life cycle savings and the return on investment.

Tabulate the annual cash flows of a solar energy system that has an initial cost of $7000 for a 12-year analysis, where the following economic parameters apply: The extra property taxes and interest on mortgage are deducted from the income tax, which is at a fixed rate of 30%. In the first year, the extra maintenance, insurance, and parasitic energy costs are equal to 1% of the initial investment and the extra property tax is 1.5% of the initial investment, both expected to increase by 3% per year. The life of the system is considered to be 20В years, and at the end of this period, the system will be sold at 25% of its original value. Find the optimum system, if the combination of collector area and load covered is as shown in the following table and the total annual load is 980В GJ. The backup fuel costs $12/GJ and its price inflates at 6% per year. The down payment of the initial expenditure is 25% and the rest is paid in equal installments over 20В years at an interest rate of 7%. The area-dependent cost of a solar energy system is $175/m 2 and the area-independent cost is $3350. 12.8Д¬alculate the present worth of a fuel cost over 12В years, if the first yearвЂ™s fuel cost is в‚¬1050 and inflates at 7% for four years and 5% for the rest of the years. 12.7Д¬alculate the cost of fuel of a conventional (non-solar) energy system for 12В years, if the total annual load is 152В GJ and the fuel price is $14/GJ, the market discount rate is 8%, and the fuel inflation rate is 5% per year.

#Ssc service utility 4.50 series#

12.6Д¬alculate the present worth of a 10-period series of payments, the first of which is $980, payable at the end of the first period, inflating by 6% per period, and the discount rate is 8%. 12.5Д¬alculate the total present worth of the interest paid (PW i) in Exercise 12.4. Also estimate the present worth of the annual payments. If this amount is paid with a 30% down payment and the balance is borrowed at 8% interest for 12В years, calculate the annual payments and interest charges for a market discount rate of 6%. The initial cost of a solar energy system is в‚¬14,000. If the initial cost of a solar energy system is в‚¬7500, the mortgage term is 12В years, and the interest rate is 9%, find the annual payment. What is the present worth of $500 in 10 years if the market discount rate is 6%? 12.2Д®stimate the present worth of a в‚¬1000 payment in seven years for a market discount rate of 8% and inflation rate of 4%.