42. Water enters the cooling tower at 50°C and leaves at 28°C while the heat rejected to air is 100 KW. Find the capacity of the pump needed to pump the water.

Q: 5- A steady flow of steam enters a condenser with an enthalpy of 2300 kJ/kg and velocity of 350 m/s.…

A:

Q: A two-stage compressor receives 0.35 kg/s of air at 100 kPa and 269K and delivers it at 5000 kPa.…

A:

Q: The Figure shows a steam engine based on insulsted turbine. The boiler has a volume 100 liters and…

A:

Q: Steam at 6.2 MPa and 480℃ is received by a regenerative engine. Extractions for feedwater heating…

A:

Q: Please read the problem and solve what is asked. Thanks! A two-stage compressor with an ideal…

A: Givenhellium gasv1=0.5m3/sP1=150kPaT1=300KP2=7500kPa

Q: A cycle HE does 60kJ of work per cycle. If the efficiency of the heat engine is 60%. The heat…

A:

Q: A Carnot engine has an efficiency of 20% when the temperature of the sink is 120° F. Then the…

A: Given,

Q: Water at 2.0 ke/s enters the boiler at 40 Cand 2000 kPa and exits the boiler at 2000 kPa The heat…

A:

Q: Steam is admitted to a turbine at 600 psia  and 740 F ,and exhausts to a condenser at a pressure of…

A: Given, Inlet pressure, P1=600 psia Inlet temperature, T1=740 °F Exhaust pressure, P2=1 psia

Q: 8. The compressor work is 100kW. The heat absorbed is 240 kW. Find a. Heat Rejected b. COP

A:

Q: A boiler feed pump receives 40 L/s at 4 MPa and 180°C. It operates against a total head of 900 m…

A: Given data The discharge from the pump is Q=40 Ls=0.04 m3s The total head is H=900 m The efficiency…

Q: Find the COP of heat pump operating between 1000K and 300K

A:

Q: A pump operates between 100kPa and 10MPA. If the mass flow rate of the pump is 20.8 kg/s, and the…

A:

Q: Steam is delivered by a steam generating unit at 1100 psia and 900 F. After expansion in the turbine…

A: a) Given Data: P1=1100 psiT1=900 FP2=P3=300 psiT3=900 FP4= 1 psi

Q: 9. A main feed pump receives water from booster pump at 230 deg. Fahrenheit and 55 psia and delivers…

A: Given, Pressure at inlet to feed pump,P1=55psiaTemperature at inlet to feed pump,T1=230°FPressure at…

Q: an ideal adiabatic compressor compresses air from 1 atm to 5atm. The inlet temperature is 293K and…

A:

Q: The higher temperature of a refrigerating system operating at a Reverse Carnot Cycle is 240 °F and…

A:

Q: The turbine section in a jet engine receives gas (assume air) at 1200 K, 800 kPa with an ambient…

A: At state 1 (1200K, 800KPa) At state 3 (80KPa)

Q: a) Internal energy increases by 45kJ and the work done is 15KJ. How much heat is added or rejected?

A:

Q: A 90 TR system has a compressor input of 0.97 kW per ton of refrigeration and COP of 5. What is the…

A: Answer: The efficiency of the compressor is 72.5155 %.

Q: A pump operates with liquid water entering at 200°F and 15 psia with a mass flowrate of 7 lbm/s.The…

A:

Q: A 15 HP motor is used to drive an air compressor. The compressor efficiency is 75% and the air is…

A:

Q: A smaller power plant produces 25 kg/s steam at 3 MPa, 600 C in the boiler. It cools the condenser…

A: Given: T2 = 600oC P2 =3000 kpa mass flow rate; m =25kg/s use the mollier chart, at point 2,…

Q: The air entering a compressor with a pressure ratio of 10 at 100kPa at 27°C leaves at 600K. It…

A:

Q: Water enters the cooling tower at 55°C and leaves at 30°C while the heat rejected to air is 120 kW.…

A:

Q: 4. Consider the Problem no. 3, if the efficiency at high pressure and low - pressure turbine is 76%…

A:

Q: A 7.162M British Thermal Unit per hour is required for a gas turbine power plant in Palawan wherein…

A: Calculated air flow in lb/min.

Q: The heat pump with a power input of 2000 kW draws heat from a heat source at a temperature of 70 ° C…

A:

Q: Steam engine with incomplete expansion receives saturated steam at 1.04 Mpa, expands it to 0.105 Mpa…

A: Since, you have posted multiple subparts and each subparts, there is more than one question. So, as…

Q: 1 kg/s steam enters the turbine at 2.5MPa and 500C while leaving at 10kPa with 89% quality. The pump…

A: Answer: (a) The turbine work output is 1142.03 kW. (b) The heat added in the boiler is 3268.4751 kW.…

Q: A pump brings in 11.3 kg/s of liquid water feed at 1.66 bar and 50oC . The exit pressure from this…

A: Given- The mass flow rate of water m=11.3 kgs At pump inlet - P1=1.66 bar, T1= 50o C For liquid…

Q: Calculate the power output from the turbine. Assume the process is adiabatic. Calculate the heat…

A:

Q: A boiler feed pump has a suction enthalpy of 2500 KJ/kg and exit of 2505KJ/kg. Find the velocity of…

A: Since there is no information about the work interaction and velocity is asked so we have to make an…

Q: A one-stage compressor with an ideal intercooler receives 0.5m3/s of Helium at 150kpa and 300K and…

A: Given data: V˙=0.5 m3/sP1=150 kPaP2=8600 kPaT1=300 K Need to determine the heat rejected at the…

Q: A boiler produces 25 kg/s of steam at 3 MPa and 600 °C, cools the condenser with seawater so that…

A: Given data m=25 kg/s Here, m is the mass flow rate. The net power output is the difference of power…

Q: A pump that is driven by a 7.5 hp motor takes water in at 720 degrees F and 5 psig and discharges it…

A:

Q: In a gas turbine cycle, the temperature of the air before and after expansion is 643°C and 310 K.…

A: Work done = 509.04 KJ Solution is given below.

Q: A heat pump operates between  36 degrees fahrenheit and 120 degrees fahrenheit . If heat added from…

A: Given: Cold temperature reservoir  (TL)=36°F or 491.67°R High-temperature reservoir (TH)=120°F or…

Q: The pressure and temperature entering the turbine is 1800kpaa and 380oC. The temperature leaving the…

A:

Q: A belt-driven compressor is used in refrigeration system that will cool 10 liters per second of…

A: givenQ=10ltr/sT1=13oCT2=1oCηb=0.98%ηm=85%Wactual=0.7kW/ton refrigerationηo=65%

Q: A four-stage single-acting air compressor running in an atmospheric at 87 kPa and 15°C has a F.A.D…

A: Given:Initial pressure, Pi=80 kPaInitial temperature, Ti=32o CFinal pressure, Pf=7 MPan=1.3

Q: The COP of the heat pump is found to be 5.62, and the heat pump operates with the source at 25°C,…

A: COP=5.62QA=2.12 KWTs=25°C

Q: In a single stage impulse turbine the blade angles are equal and the no:le angle is 20 grees . The…

A: nozzle angle= 20°Cv=0.83velocity coeff kb=0.83

Q: A Camot engine operates between 12000F and 1000F and rejects 40 Btu to the low temperature heat…

A: T1= 12000 F= 6922.0389 KT2= 1000 F= 810.9278 KQrej= 40 Btu   Note: Tin K= 5(Tin F - 32)9+273.15

Q: A carnot engine requires 40 kw from the hot source. The engine produces 18 KJ/s of power and the…

A:

Q: A steam engine has a boiler that operates at 500 K. The energy from the boiler changes water to…

A:

Q: A Carnot engine requires 50kJ/s from the hot source. The engine produces10kW of power and the…

A: Given   Heat supplies, Q = 50 kJ/s Work, W = 10 kW Cold temperature. Tc = 30oC Find  Hot…

Q: The pressure inlet for air compressor is 14 psi ,60 F and the output of 140 psi at 1080 R .This…

A: We will use energy balance

Forms of Energy

Energy is described as the capability to accomplish a task, like the ability to push a block by applying force on it. It is a quantitative property that is used to accomplish work on an object.