1. The velocity of the water at the entrance and exit of a pipe are 10 m/s and 3 m/s,respectively. The volume of water flowing inside the tube is 18000 m³. What isthe kinetic energy of the water measured at the exit of the pipe?2. If the exit of the pipe in problem 1 is located at the ground level, what is theelevation of the pipe inlet if all the potential energy is converted to the kineticenergy in problem 1?

Answered: Image /qna-images/answer/902f6b39-66ae-4764-ad9f-8c4dee4f4ac5.jpg

1. The velocity of the water at the entrance and exit of a pipe are 10 m/s and 3 m/s, respectively. The volume of water flowing inside the tube is 18000 m³. What is the kinetic energy of the water measured at the exit of the pipe?

1. The velocity of the water at the entrance and exit of a pipe are 10 m/s and 3 m/s, respectively. The volume of water flowing inside the tube is 18000 m³. What is the kinetic energy of the water measured at the exit of the pipe?

Refrigeration and Air Conditioning Technology (MindTap Course List)

8th Edition

ISBN:9781305578296

Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Publisher:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Chapter40: Typical Operating Conditions

Section: Chapter Questions

Problem 10RQ: The seasonal energy efficiency ratio (SEER) includes the energy used in the _____and _____cycles.

See similar textbooks

Similar questions

Q4: Why the stroke length of the racing cars' engines is always smaller than its bore diameter?
1. The mean effective pressure of an engine running at 300 rpm is 500 kPa. What is the indicatedpower if the engine has bore of 250 mm x 450 mm. Select the correct answer below: A. 110.5 kW B. 150 kW C. 200 kW D. 182. 2 kW 2. In a certain process, entering is 1500 KJ/kg and 150 m/s. If the energy leaving is 12000 Kj/kg/ Determine the velocity at exit. Select the correct answer below: A.) 145 m/s B. 1020 m/s C. 789 m/s D. 978 m/s
Could Dr. benjmin be lifted 20 cm above the floor by the thermal energy of the floor overcoming the gravitational force? Assume Dr. Guliaev’ weight is 200 lb, the temperature of the room is 298K and the temperature of the floor doesn’t change in this process. a. Would this process violate the 1st Law of Thermodynamics? b. Can you calculate the probability of this event? (Consider entropy and W. Energy is need for the lift is E=mgh)
In a process plant, water is flowing through a globe valve. The pressure before the entering the globe valve is 10 bar and the velocity through a 100 mm valve inlet is 4 m/s. The valve is horizontally placed and when it is 50% open the downstream pressure is observed to be 2 bar. The outlet section of the valve has same diameter as the inlet section. Calculate the power needed to for water to flow through this valve. 4.28 kW 8.28 kW 10.28 kW None of the above O 6.28 kW
1. An engine from a quarry vehicle used in the Build a Beach program of DEMR has a power requirement of 560 kW. Per hour of its operation, it ejects 234 MJ into its surroundings at 50 °C. If it behaves like a Carnot engine, answer the questions below. A. How much work (MJ) is done by the engine per hour of operation? B. What is the efficiency (%) of the engine?C. What is the temperature (°C) of the hot reservoir? 2. Determine the entropy change (kJ/K) associated to the conversion of 10 kg of ice at -11 °C to steam at 121 °C. 3. Anna and Beth are using another rare metal, the nth metal (c = 0.600 J/g-℃), to build the 5-kg cuirass of their design. Initially, the metal is at 2250 K. It is then submerged to 10 kg of water at 15 °C. If the remaining liquid water after submerging the metal is 8.5 kg, solve for the net entropy change (kJ/K) of the system.
a. Water flowing at 2.6 KL/s is taken from a river and delivered to a turbine 100m lower than the source. If the turbine/generator has an efficiency of 45%, calculate the electrical power that would be delivered over one year. b. Explain, with the aid of suitable graphs, the charge and discharge cycle of a deep cycle lead acid battery. c. In a thermal power plant, 1500 MWh of energy is to be produced in a day, half from oil and half from natural gas, Calculate, for a one year period: the number of barrels of oil required if the fuel oil plant is 40% efficient. the total amount of natural gas required if the efficiency of the gas plant is 48% If a coal plant of 45% was used to supply the full load for a week, how much coal would be required? Use the following conversions in your calculations. Fuel & Energy Conversion & Equivalence Chart (reduced) http://www.cogeneration.net/FuelAndEnergyConversionandEquivalence.htm 1. Fuel Oil: 1 Gal of #4 Fuel Oil - 145,000 Bou's 1 Barrel of Oil -42…
4. A compressor draws in 500 min ft³ of air whose density is 0.079 lb and discharges lb At the suction, P, = 15 - lb it with a density of 0.304 and at the discharge, in? lb The increase in the specific internal energy is 33.8 Btu and the lb P2 = 80 in? Btu heat from the air by cooling is 13. Neglecting changes in the potential and lb Btu kinetic energy determine the work done on the air in min and in horsepower.
The power of a steam turbine in a thermal power plant is 60 MW. Water vapor enters the turbine at 3MPa pressure, 4000C temperature and 50 m / s speed, 10 kPa pressure, 0.9 dry degree and 200 m / s speed leaves the turbine. Considering the turbine as adiabatic; 1-Find the mass flow of steam 2-Find the turbine outlet cross-sectional area, its ratio (A2 / A1) to the inlet cross-sectional area.
A pump is used to raise the pressure of water from 0 psig to 55 psia. How much power (in kW) will be required to pump 1.5ft3/s of water? What is the effect of the water temperature on the pump power that is required? a. Sketch the problem. b.Draw lines identifying the control volume, or control mass. c.Identify the states with numbers, letters, or descriptions such as “in” and “out”. d.Write down the knowns and unknowns. e.Identify what is being asked for. f.State all assumptions.
10 kg/s of steam (H2O) enters a turbine at 10 m/s and a specific enthalpy of 3500 kJ/kg and leaves at an outlet 10m below the inlet with a specific enthalpy of 2500 kJ/kg and a velocity of 20 m/s. Assume steady-state steady-flow. If the heat lost from the turbine is 20% that of the turbine work, determine a.) the turbine horsepower. If the turbine is coupled to a generator with a 90% electrical efficiency, and the turbine horsepower has an 80% mechanical efficiency, b.) how much income will a power plant generate in one year if the electrical energy is sold at PhP 3.51 per kW-hr? (Hint: Mechanical efficiency = actual turbine work / ideal turbine work. Electrical efficiency of a generator = electrical output / actual turbine work.)
Air at a pressure of 1bar and a temperature of 300K (Kelvin), which can be modeled as an ideal gas; It is passed through the compressor and compressed to a pressure of 5bar and a temperature of 500K. During this process, which is carried out continuously (steady state), 150kW power is transferred to the compressor. In addition, 20kW of heat energy is transferred from the compressor to the cooling liquid. Calculate the mass flow, ignoring the kinetic and potential energy changes.
Obtain the heat transfer to the engine Qh, the work done by the engine W, and the efficiency e.