A counterflow bank of boiler tubes has a total area of 900 ft^2 and its overall efficiency of heat transfer is 13 Btu/hr-ft-°F. Calculate the heat transferred if the log mean temperature difference is 1380°F.

A counterflow bank of boiler tubes has a total area of 900 ft^2 and its overall efficiency of heat transfer is 13 Btu/hr-ft-°F. Calculate the heat transferred if the log mean temperature difference is 1380°F.

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

Chapter44: Geothermal Heat Pumps

Section: Chapter Questions

Problem 1RQ: Geothermal heat pumps, or water-source heat pumps, are classified as either _____loop or _____loop...

See similar textbooks

Related questions

Q: Under the action of gravity, water of density ρ passes steadily through a circular funnel into…

A: Consider v as the velocity in the pipe. The head loss due to friction is

Q: A high reservoir holds water. Water travels from this reservoir down via a big conduit to a turbine…

Q: An 80-percent-efficient pump with a power input of 20 hp is pumping water from a lake to a nearby…

A: The power supplied by the pump to the fluid is

Q: Your second customer wants to determine the required electrical power, which will be used to pump…

A: Consider the steady flow device with control volume as shown. Working substance enter at device 1-1…

Q: Oil is pumped from a very large tank (z1 = 150 m) to another tank (z2 = 200 m), located higher and…

Q: The fluid condition at the inlet and exit of a horizontal convergent nozzle is analysed. The nozzle…

A: Given, Nozzle inlet: Nozzle outlet:

Q: hydro-electric power plant has a 25MW output with an efficiency of 97%. The turbine efficiency is…

Q: A counter-flow bank of boiler tubes has a total area of 900 sq ft and its overall efficiency of heat…

Q: A Camot engine produces 25 kW while operating between temperature limits of 1000 K and 300 K.…

Q: The velocity of water at the inlet and outlet sections of a draft tube are 8 m/s and 2 m/ s…

Q: Water with a specific heat of 1 BTU/lbm F is pumped using a 1-hp jet pump from a well that is 20 ft…

A: Given Specific heat, C = 1 BTU / lbm Flow rate, m = 5 gal/min…

Q: Calculate the power transmitted through the shaft of a turbine when the torque applied is 10kN.m and…

Q: Fluid enters a condenser at a rate of 35 kg/min with a specific enthalpy of 2200 kJ/kg and leaves…

Q: A pump is to deliver 80 GPM of water at 1400F (ρ = 61.424 lb/ft3) with a discharge pressure of 150…

A: Given - Discharge (Q) = 80 GPM = 0.1337×8060 =0.1783 ft3s =308.045 in3s At T = 140 F Weight Density…

Q: 3. A 6 in x 20 ft uninsulated B.I pipe conveys steam at 385 °F with an average ambient temperature…

A: Given, Do=6.625 in=6.62512 ft=0.552 ftDi=5.761 in=5.76112 ft=0.48 ft L=20 ft k=30 BTUhr.ft.0Fhi=1000…

Q: Constant operating speed characteristics; H = 55 – 460v² and ng = 8,2 – 130v³ Water is drawn from a…

Q: A: A hydro-electric station is operated with a mean head (h) of 30 m and consume (discharge water)…

A: Flow rate: The amount of fluid flowing through a particular cross-section per unit of time is known…

Q: Example A 5-hp fan is used in a large room to provide for air circulation. Assuming a…

A: The mechanical energy delivered by the fan will be dissipated as heat energy.since room is well…

Q: Consider a hemispherical tank that is completely filled with water. The water exits the tank from…

Q: You have a pump-turbine system, which is a system that is used by some power plants for energy…

A: A) PUMP Head Hm=40 mQ=.01 m3secη=70 % ηpump=ρQgHmPinput.70=1000×.01×9.81×40PinputPinput…

Q: Q1. A forward-feed double-effect evaporator, having 10 m2 of heating surface in each effect, is used…

A: From the given data: λ0=2141kJkgλ1=2211kJkgλ2=2370kJkg0 Making a heat balance around stage…

Q: The turbine's inlet is connected to a steam throttling valve with inlet conditions of 3MPa and 500C,…

Q: Problem 24 A fluid is flowing in a 100-mm-diameter pipe with a velocity of 2.50 m/s. The fluid…

Q: Determine the expected Fanning friction factor for water at 28 degrees Celsius, flowing through a…

A: Give data as per the question The internal diameter of the tube =15 mm = 0.015 m velocity =0.3 m/s…

Q: a saturated steam is to be condensed at temperature of 50 °C to produce a saturated water. The…

Q: A liquid with a density of 0.8 [g/ml] flows through a tube with an inner diameter of 50 [mm]. There…

A: Given: Orifice coefficient, Co = 0.61 Orifice diameter, Do = 25.4 mm Diameter, D = 50 mm Find: Flow…

Q: A differential thermocouple with sensors at the inlet and exit of a pump indicates that the…

A: Given data ∆T=0.048 °FV=1.5 ft3/sec

Q: storage tank through a pipe with cross sectional area 0.05ft². The velocity in the suction line is 3…

Q: 12.) Water at a rate of 1 lbm/s flows in a vertical heated tube (d = 1.5 in). System pressure is…

Q: The following observations were recorded during a test on a steam condenser of counter flow:…

A: Given that, Barometer reading=765 mm Hg,Vacuum reading=710 mm Hg,Steam and air temperature=35…

Q: What is the differential reading on a pitot tube inserted at the centerline of an 8-inch ID pipe…

A: The data given is, Discharge, Q = 1200 gpm The diameter of the pipe, d = 8 in. = 0.667 feet Ratio…

Q: Compute the power in KW generated by Agusan Hydro Electric power plant with water flow rate of 1.552…

Q: Question 2 A water pump driven by an 800 W electric motor is used to pump water from the ground…

A: Given: The pump power, P = 800 kW The flow rate, Q = 20000 ltr/hr The delivery head, h = 10 m The…

Q: An oil has 0.62 inch steel tube, through which flows an oil. The properties of oil are as follows; μ…

Q: Question 2 A water pump driven by an 800 W electric motor is used to pump water from the ground…

A: given; power(P)=800wdischarge rate(Q)=20000L/hr =200003600*10-3 m3/s…

Q: 1. Water horsepower of the pump 2. Brake horsepower of the pump 3. Power input to drive the…

Q: compare how heat transfer(conduction and convection and radiation) efficiency will affect the…

A: Conduction: It is the mode of heat transfer by the means of molecular vibration. It depends on the…

Q: A pump is to deliver 80 GPM of water at a density of 61.38 lb/ft 3 with a discharge pressure of 150…

A: Given, Q=80GPMQ=80×0.13368160Q=0.1782ft3/sDensity, ρ=61.38lb/ft3Suction pressure, Ps=2" Hg…

Q: A geothermal power plant was installed at the rear side cliff of Mayon Terrain that generates…

Q: A gardener is thinking of installing piping system for watering the plants in his garden located…

A: In fluid dynamics following principles are used. 1) Mass conservation 2) Energy conservation if a…

Q: A hemispherical tank of radius 3m is filled with 4500 liters of water. Find the time it will take to…

A: Given : r = 3 m V = 4500 L = 4.5 m3 P = 10 kW To find : Time taken

Q: An oil has 0.62 inch steel tube, through which flows an oil. The properties of oil are as follows; μ…

A: given; ⇒initial temperature(T1)=600F⇒isurface area(As)=0.1613ft2⇒ilenth of pipe(l)=10ft⇒itemperature…

Q: Example A 5-hp fan is used in a large room to provide for air circulation. Assuming a…

A: Given Work done, W = - 5 hp = - 5 x 746 W = 5…

Q: An oil has 0.62 inch steel tube, through which flows an oil. The properties of oil are as follows; μ…

A: The Answer is below

Q: A 1 cm in diameter vertical pipe has a pressure difference of 200 kPa with liquid Sodium (Na)…

A: Given data: The density of the sodium is: Calculate the pressure head as follows:

Q: A 90° elbow as shown in Figure Q2b is used to direct water flow at a rate of 30 kg/s in a horizontal…

A: Density Density is the mass in kg occupied in 1m3 volume. Mass flow rate Mass flow rate is the…

Q: b) Steam generators are a type of heat exchanges that are used in power plants to generate steam at…

A: Water inlet condition= saturated liquid at 30oCTube diameter, d=60 mm =0.060 mVolume flow rate at…

Q: You are provided a horizontal tube with one entrance and one exit. Air (Cp = 1.005 kJ/(kg-K)) is…

Q: An engine is tested by means of a water brake at 1000 rpm. The measured torque of the engine is…

A: Given: The speed of water brake, n = 1000 rpm The torque acting on the engine, T = 10,000 Nm The…

Concept explainers

Work and Heat Transfer

It is generally related to thermal engineering which tells about the use, creation, conversion and transfer of heat energy between the systems. It is also considered that to transfer heat from one source to another, transfer of masses is also required. There are various mechanisms by which, transfer of heat takes place i.e. thermal conduction, convection, radiation or by change of phase. All these mechanisms have their own specific features which sometimes occur simultaneously within the same system.

Question

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.

Similar questions

You are provided a horizontal tube with one entrance and one exit. Air (Cp = 1.005 kJ/(kg-K)) is passing through the pipe and is assumed ideal. The inlet conditions are 102 psia, 101 degrees Fahrenheit and velocity 9 feet/second. Determine the outlet velocity (ft/s) and outlet temperature (degrees Fahrenheit) if the exit conditions are 2.1 psia. Assume the process occurs under adiabatic conditions. Write all the assumptions you made in solving the problem.
Water with a specific heat of 1 BTU/lbm°F is pumped using a 1-hp jet pump from a well that is 20 ft deep into a vented water vessel 160 ft above the ground. In the process, 400 BTU/min of heat is lost from the system. Whatis the temperature (°F) of the water as it enters the vessel if the flow rate of the water is 5 gal/min? Assume the temperature of water in the well is (35°F).
A differential thermocouple with sensors at the inlet and exit of a pump indicates that the temperature of water rises 0.048° F as it flows through the pump at a rate of 1.5 ft3/s. If the shaft power input to the pump is 23 hp and the heat loss to the surrounding air is negligible, determine the mechanical efficiency of the pump.
Inside of a room, the atmospheric pressure measures out to be 100 kPa. A pipe with a diameter of 0.5 meters is used to release air into the surrounding atmosphere. The fan has a capacity of 2000 m3/h , consumes 1100 watts of power, and rotates at 1000 revolutions per minute. The pressure drop on the suction side is 60 pA, while the pressure drop on the discharge side is 80 kPa. When the operating speed is increased to 1200 revolutions per minute, calculate the fan's capacity based on the resulting change in power. in m3/s
. A plant is located at an altitude of 2500 ft where the atmospheric pressure is 27.5 in. Hg absolute, has an open feedwater heater located 10 ft above the pump centerline. The water in the heater has a temperature of 190 F. If the head loss in the suction pipe between the heater and the pump is 1 ft, determine the available suction head at the pump
The power requirement of a 3-stage compressor (in kW, two decimal places) in order to supply air at 20 degrees celcius at a rate of 250 cubic meter per hour at a total discharge pressure of 100 psig is ___________. If the efficiency of the compressor is 60%. Give full solution:
Geothermal heat pumps, or water-source heat pumps, are classified as either _____loop or _____loop systems.
Calculate the power transmitted through the shaft of a turbine when the torque applied is 10kN.m and the shaft rotates at a rate of 3000rpm
Fluid machinery A 100 mm x 200 mm single-acting duplex power pump is driven by a 750 rpm electric motor against a head of 25 kg/cm2. The water temperature is 100 oC and the overall efficiency is 85%. Slip is 5%. Determine a. the actual capacity of the pump (10 points) Answer : __________________liter/sb. the brake HP of the driving motor (20 points) Answer : __________________ HP
Q2: A: A hydro-electric station is operated with a mean head (h) of 30 m and consume (discharge water) 218.75 of water in one year for the average load. The expected load factor for the station is 80 0/0 . Calculate the power in Kw for which the station should be designed (max.load). Assume that the mechanical efficiency of the turbine is 90% and the efficiency of the generator is 95%. * 10 6 Pi ^ 3
Carbon dioxide gas enters a water-cooled compressor at the initial conditions P1 = 15 psia and T1 = 50 ◦F and is discharged at the final conditions P2 = 520 psia and T2 = 200 ◦F. The entering CO2 flows through a 4-inch diameter pipe with a velocity of 20 ft/s and is discharged through a 1-inch diameter pipe. The shaft work supplied to the compressor is 3560 Btu/lb · mol. What is the heat transfer rate from the compressor in Btu/hr? H1 = 307 Btu/lb · mV1 = 9.25 ft3/lbH2 = 330 Btu/lb · mV2 = 0.28 ft3/lb
If a 200-gal. steel hydraulic reservoir twice as long as its square end section is wide and overheats the fluid with a temperature rise of 100°F, how large would the reservoir have to be to reduce the temperature rise to 70°F?