Engineering, 07.04.2020 18:38 lovehelping7095
The electric bill of your small chemical company is $110,000/year. Your company operates only during the normal business day, when the cost of electricity is highest. Consider this scheme to reduce the electric bill: install rechargeable batteries that will be charged from midnight to 6 am (when the cost of electricity is lower) and will be discharged during the day to power the plant. The capital cost of this scheme (batteries plus installation) is $65,000. The batteries are expected to last 5 years. The cost of maintenance and inspection of the batteries is expected to be $4000/year. With these batteries, you predict your electric bill will drop to $80,000/year. Calculate the ROI for this scheme to install batteries. You may assume a straight-line depreciation on the batteries.
Answers: 3
Engineering, 03.07.2019 15:10
Ahouse has the following electrical appliance usage (1) single 40w lamp used for 4 hours per day (2) single 60w fan used for 12 hours per day (3) single 200w refrigerator that runs 24 hours per day with compressor run 12 hours and off 12 hours find the solar power inverter size in watt with correction factor of 1.25.
Answers: 1
Engineering, 04.07.2019 18:10
Water in a partially filled large tank is to be supplied to the roof top, which is 8 m above the water level in the tank, through a 2.2-cm-internal-diameter pipe by maintaining a constant air pressure of 300 kpa (gage) in the tank. if the head loss in the piping is 2 m of water, determine the discharge rate of the supply of water to the roof top in liters per second.
Answers: 3
Engineering, 04.07.2019 18:20
Acertain flow of air (at stp) has a velocity distribution given by v i (in ft/s). if this flow is going through a 4 ft square area in the yz-plane (centered at the origin), what is the mass flow rate (in lbm/s)?
Answers: 2
Engineering, 04.07.2019 19:10
Apressure vessel with an r/t 20 cannot be treated as thin walled vessel. a)-trune b)- false
Answers: 3
The electric bill of your small chemical company is $110,000/year. Your company operates only during...
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