During a steady flow process, the pressure of the working substance drops from 180 psia to 30 psia, the speed increases from 210 fps to 1050 fps, the internal energy of the open system decreases 30 Btu/lb, ad the specific volume increases from 2 to 10ft^3/lb.Heat loss is 20 Btu/lb. Determine the horsepower for 12 lb/min mass flow

A water tube boiler has a capacity of 1000 kg/hr of steam. The factor of evaporation is 1.3, boiler rating is 200%, boiler efficiency is 5%, heating surface area is 0.91 m²/boiler Hp, and the heating value of fuel is 18,400 Kcal/kg. The total coal available in the bunker is 50,000 kg. Determine total number of hours to consume the available fuel. 1.

3. The pump of a water distribution system is powered by a 15 kW electric motor whose efficiency is 90%. The water flow rate through the pump is 50 L/s. The diameters of the inlet and outlet pipes are the same and the elevation difference across the pump is negligible. If the pressures at the inlet and outlet of the pump are measured to be 100 kPa and 300 kPa respectively. Determine the following: a.) efficiency of the pump b.) determine the temperature rise of water as it flows through the pump due to the mechanical inefficiency.

t = 135°C, h = 567.69 KJ/kg

Determine the quality of 290 kPa of steam when 570 kJ / kg of energy is lost from the saturated vapor.a. steam quality = ......%b. what is the temperature of the steam = ..... C

2. Saturated steam at 100°C is heated to 350°C at constant pressure. Use the steam tables to determine: a. The pressure in bar. b. the required heat input (J/s) if a continuous stream flowing at 100 kg/s undergoes the process.