Chapter 17, Problem 20P

B- Discuss the following claimed arguments: [6] 1- Shallow ground geothermal systems can play an essential role in the future of renewables in Palestine. 2- Two way communication systems are essential in smart grid technology. 3- Type 4 of wind turbine technologies has many advantages in comparison with other technologies.

Investigate the size of a gas furnace used in a typical single-family dwelling in upstate New York, and compare that size to the furnaces used in Minnesota and in Kansas.

In the figure shown below, it is desired to pump3,177,640 lit/ day of water from a streamto a pool. Ei A = 55 m while El. B = 103 m.If the combined pump and motor efficiencvis 89%, calculate the monthly power cost in pesosif electricity rate is ₱10 per Kw-hr. Assume that thepump operates for 24 hours and take 1 month =31 days. A. 152, 631.3618 B.  692,531.8213 C. 451,371.0313 D.563, 903.0421

Each hour an oil burner runs, the nozzle sprays 3⁄4 gallon of fuel. If the burnerruns for 21⁄2 hours, how much fuel is sprayed into the burner?

The demand for electric power is usually much higher during the day than it is at night, and utility companies often sell power at night at much lower prices to encourage consumers to use the available power generation capacity and to avoid building new expensive power plants that will be used only a short time during peak periods. Utilities are also willing to purchase power produced during the day from private parties at a high price. Suppose a utility company is selling electric power for $0.06/kWh at night and is willing to pay $0.13/kWh for power produced during the day. To take advantage of this opportunity, an entrepreneur is considering building a large reservoir 50 m above the lake level, pumping water from the lake to the reservoir at night using cheap power, and letting the water flow from the reservoir back to the lake during the day, producing power as the pump–motor operates as a turbine–generator during reverse flow. Preliminary analysis shows that a water flow rate of 2…

Replacing incandescent lights with energy-efficient fluorescent lights can reduce the lighting energy consumption to one-fourth of what it was before. The energy consumed by the lamps is eventually converted to heat, and thus switching to energy-efficient lighting also reduces the cooling load in summer but increases the heating load in winter. Consider a building that is heated by a natural gas furnace with an efficiency of 80 percent and cooled by an air conditioner with a COP of 3.5. If electricity costs $0.12/kWh and natural gas costs $1.40/therm (1 therm = 105,500 kJ), determine if efficient lighting will increase or decrease the total energy cost of the building (a) in summer and (b) in winter.

Assuming compliance with federal NSPSs, predict the daily rates of emissions of particulates, NOX, SOx, and Hg from a coal-fired power plant producing 1000 MW of electrical power at an overall thermal efficiency of 40%, Assume coal contains 1,5% sulfur and has a heating value of 10,000 Btu/lb,

Consider a new 38% efficient 600-MW power plant burning 9,000 Btu/lb coal containing 1% sulfur. If a 70% efficient scrubber is used, what would be the emission rate of sulfur (lb/hr)?