A counter-flow heat exchanger is used to heat 1500 L/h of water (Cp = 4.178 kJ/kg.°C, p = 998 kg/m3) from 20 to 60°C while cooling an oil (Cp 2.1 kJ/kg°C) from 150 to 90°C. Determine the oil mass flowrate. Select one: O a. 0.055 kg/s O b. 0.085 kg/s O c. 0.075 kg/s O d. 0.065 kg/s

A counter-flow heat exchanger is used to heat 1500 L/h of water (Cp = 4.178 kJ/kg.°C, p = 998 kg/m3) from 20 to 60°C while cooling an oil (Cp 2.1 kJ/kg°C) from 150 to 90°C. Determine the oil mass flowrate. Select one: O a. 0.055 kg/s O b. 0.085 kg/s O c. 0.075 kg/s O d. 0.065 kg/s

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: 4. A smoking lounge is to accommodate 15 heavy smokers. The minimum fresh air requirement for…

Q: 5000kg of liquid A (?? 2.4 kJ/kg-deg) per hour is cooled from 90 C to 60 C through a counter flow…

A: As per bartleby guidelines, solution of only 1st question is provided here.

Q: The power generated by the Turbine of the following ideal air-standard Brayton cycle is: Heat…

A: given: T3=1200K T4=780K the mass flow rate of air, m=4.5kg/s Cp of air= 1.005 KJ/Kg-k

Q: The maximum flow rate of standard shower heads is about 3.5 gpm (13.3 L/min) and can be reduced to…

Q: An adiabatic heat exchanger is used to heat cold water át 8 C entering at a rate of 3 kg/s by hot…

Q: The maximum flow rate of standard shower heads is about 3.5 gpm (13.3 L/min) and can be reduced to…

A: Given →Standard vol flow rate Vs=113.3 lit/minLow flow shower flow rate VL=10.5 lit/minShower…

Q: The specific heat value in phase change heat exchangers is approximately a) 0 kJ/(kgC)…

Q: 5. A well-insulated, thin-walled, counter-flow heat exchanger is to be used to cool oil (cp = 2.20…

Q: 0.2 A condenser condenses 2700kg steam per hour while air leaks into It at 2.2kg/hr. The condensate…

A: Given: The steam condenses per hour, mw = 2700 kg/hour The air leakage into the condenser, ma = 2.2…

Q: Air at 32℃ DBT and 20℃ WBT is passed through a cooling coil maintained at 5℃. The heat extracted by…

Q: Engineer CoolAir is working on designing an air conditioning unit that handles the combined air flow…

Q: Cold water enters a counter-flow heat exchanger at 35°C at a rate of 0.0233 kg/s, where it is heated…

Q: The radiator in an automobile is a cross-flow heat exchanger (UAs = 10 kW/K) that uses air (cp =…

A: Given data To determine exit temperature of cold fluid..??

Q: Liquid benzene at 38 C with a vapor pressure of 26.4 kN/m2 and a density of 860 kg/m3 is to be…

A: Given data as per question Pv=26.4 KNm2Q=0.0025 m3sη=0.6ρ=860 kgm3D=0.0409 mΔpf=3.45…

Q: In a single-body, four-pipe transition heat exchanger, the hot combustion product gases are cooled…

Q: rite down the steady flow energy equation (SFEE) and apply it for boiler, turbine, heat exchanger…

A: An open system's total energy fluxes are described by the Steady Flow Energy Equation. The mass…

Q: Q3// a saturated steam is to be condensed at a temperature of 50 °C to produce a saturated water.…

Q: If the temperature difference across each radiator is 10 C, the mass flow rate of water in pipe LM…

Q: Water enters the pump of a steam power plant at 15 kPa and 50°C at a rate of 0.15 m3 /s. The…

Q: Cold water (cp = 4.18 kJ/kg·K) enters a crossflow heat exchanger at 14°C at a rate of 0.35 kg/s…

A: It is required to determine the heat capacity rate of the hot fluid. It is required to determine…

Q: Air (cp = 1.005 kJ/kg·°C) is to be preheated by hot exhaust gases in a crossflow heat exchanger…

A: Given: The specific heat is Cp =1.10 kJ/kg∙⁰C. The pressure and temperature at the entrance is…

Q: Q5/ Water ( Cp =4.18 kJ/kg.°C) at ( 30 °C) is available for use as a coolant in counter flow double…

Q: A thin-walled double-pipe counter-flow heat exchanger is used to cool oil (C, = 2.20 kJ/kg.°C) from…

Q: 23–74C Consider a heat exchanger in which both fluids have the same specific heats but different…

A: “Since you have asked multiple question, we will solve the first question for you. If youwant any…

Q: A well-insulated, thin-walled, counterflow heat exchanger is to be used to cool oil (cp = 2.20…

A: Given Data: The mass flow rate of oil is mo˙=2 kg/s. The exit temperature is T2 = 150°C + 273 = 423…

Q: The specific volume of refrigerant R-134a entering an adiabatic emitter is 0.027371 m³/kg and…

Q: n a heat exchanger, a fluid with a density of 2.5 m per hour and a specific heat of 0.727 kcal / kg…

A: Given Data:- Hot,Qh=2.5m3/hCph=0.727kcal/kg∘CThi=120∘CTho=40∘Cρh=110kg/m3 Cold,Qc=10 m3/hCpc=…

Q: Hot fluid enters at a flow rate of 3 kg/sec with an inlet temperature of 150 C while cold fluid…

A: Heat is a form of energy that gets transferred from the high temperature region to the low…

Q: If the temperature difference across each radiator is 15 °C, the mass flow rate of water in pipe LM…

A: Correct answer is option c 0.111 kg/ sec

Q: Air (cp = 1.005 kJ/kg·°C) is to be preheated by hot exhaust gases in a crossflow heat exchanger…

A: Given: The volume flow rate of the air is V=1.6 m3/s. The mass flow rate of the gases are m=2.2…

Q: Ethyl glycol is cooled with water (Cp=4.18 kJ/kgºC) in a heat exchanger. The inlet temperature of…

Q: Consider a condensing heat exchanger operating with two separate fluids, R-134a and the water.…

Q: In a power plant steam, steam is continuously extracted from the turbine and in a heat exchanger…

A: Data given - T2 = 20°C = 293 K Q2 = 800 kJ/ min Q1 = 1250 kJ / min

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: An R-22 compressor has a 5 percent clearance volume and a displacement rate of 80 L/s and pumps…

A: Option D is right

Q: 2 - Ethyl glycol is cooled with water (Cp=4.18 kJ/kgºC) in a heat exchanger. The inlet temperature…

Q: Among the principal irreversiblilities of a gas turbine power plant, the most significant source of…

A: This question is basically belongs to powerplant.

Q: Air (R = 0.3074 psia.cf/lbm.R) is compressed from 14.7 psia and 60°F to a pressure of 150 psia while…

A: Given data P1=14.7 psiaT1=60°F

Q: Explain totally and internally reversible heat transfer processes.

A: Internally reversible heat transfer processes are the heat transfer processes in which there are no…

Q: A counter-flow heat exchanger is used to cool oil (cp = 2.20 kJ/kg⋅ºC) from 110ºC to 85ºC at a rate…

Q: In a heat exchanger, the heat transfer depends on the choice of the control volume

A: Heat Exchanger It is a device which is used to transfer heat between two or more fluids Heat…

Q: Q1/ A gas turbine operates with components as shown in figure 1. Air enters this first compressor at…

Q: Q.2. Air enters a steady-flow heat exchanger with a mass flow rate of 2 kg/s as shown in Figure.…

A: Given ⇒m=2kgs, Cp=1.005 kJkg-KHeat exchanger inlet -T1=12°C , V1=3msHeat exchanger outlet/Turbine…

Q: Hot fluid enters at a flow rate of 3 kg/sec with an inlet temperature of 150 C while cold fluid…

Q: Crude oil at 198°C is to be cooled to 39°C. The oil flow-rate is 6.032 kg/s. Cooling water is…

Q: Milk at 40 ° C with a specific heat of 3.85 kj / kg K will be pasteurized at 75 ° C by using…

A: Consider the diagram shown below for the parallel flow heat exchanger. The heat lost by the 1 kg of…

Concept explainers

Heat Exchangers

Heat exchangers are the types of equipment that are primarily employed to transfer the thermal energy from one fluid to another, provided that one of the fluids should be at a higher thermal energy content than the other fluid.

Heat Exchanger

The heat exchanger is a combination of two words ''Heat'' and ''Exchanger''. It is a mechanical device that is used to exchange heat energy between two fluids.

Question

A counter-flow heat exchanger is used to
heat 1500 L/h of water (Cp = 4.178 kJ/kg.°C,
p = 998 kg/m3) from 20 to 60°C while
cooling an oil (Cp = 2.1 kJ/kg°C) from 150 to
90°C. Determine the oil mass flowrate.
Select one:
a. 0.055 kg/s
b. 0.085 kg/s
c. 0.075 kg/s
O d. 0.065 kg/s

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

Introduction:-

VIEW

Solution:-

VIEW

Answer:-

VIEW

Step by step

Solved in 3 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

THERMOFLUID A thin-walled double-pipe counter-flow heat exchanger is used to cool oil (C, = 2.20 kJ/kg.°C) from 150 to 40°C at a rate of 2 kg/s by water (c, = 4.18 kJ/kg.°C) that enters at 22°C at a rate of 1.5 kg/s. Determine the rate of heat transfer in the heat exchanger and the exit temperature of water.
Question 4 A thin-walled double pipe, counter-flow heat exchanger is to be used to cool oil (cp = 2.2 kJ/kg.°C) from 150 °C to 40 °C at a rate of 2.3 kg/s by water (c, = 4.18 kJ/kg.ºC) that enters at 20 °C at a rate of 1.4 kg/s. The diameter of the tube is 13 cm and its length is 60 m. Determine the overall heat transfer coefficient of this heat exchanger using; i. logarithmic mean temperature difference LMTD method, and ii. NTU method.
A heat exchanger is used to cool oil (with cp = 2.2 kJ/kg.°C) from 170 to 50°C by water (with cp = 4.18 kJ/kg.°C) that enters the heat exchanger at a rate of 2 kg/s and inlet temperature of 10°C. If the flow rate of the oil is 1.5 kg/s, determine the exit temperature of water and the heat transfer rate from the oil.
Q1] A shell and tube heat exchanger is used to heat water (C = 4236 J/kg. °C) from 80°C to 150°C at a rate of 12.5 kg/s by hot gas that enters the exchanger at 350°C with a rate of 20.36 kg/s. The overall heat transfer coefficient is 290 W/m² °C. The gas making 2-shell passes and the water making 4-tube passes. Calculate the heat transfer surface area (Cp (gas) = 1.04 kJ/kg.°C). heat flux: (a) by
Liquid water is heated inside the tubes of a shell and tube heat exchanger as shown in the figure below. The inlet temperature is 30 °C and the outlet temperature is 50 °C. The tube inside and outside diamters are 16 mm and 18 mm respectively. The mass flow rate in each tube is 0.25 kg/s. Refrigerant Gas Water Out Water In Refrigerant Liquid Estimate: a) The average velocity in each tube: b) The Reynolds number in each tube: c) The Nusselt Number of the flow inside each of the tubes: m/s
1. A thin-walled double pipe, counter-flow heat exchanger is to be used to cool oil (Cp = 2.2 kJ/kg.ºC) from 150 °C to 40 °C at a rate of 1.4 kg/s by water (Cp= 4.18 kJ/kg. °C) that enters at 20 °C at a rate of 2.3 kg/s. The diameter of the tube is 13 cm and its length is 60 m. Determine the overall heat transfer coefficient of this heat exchanger using
Hello! I'd like help with the following exercise, from Levenspiel's "Engineering Flow and Heat Exchange". Leftover air at 20ºC and 100kPa is driven by a fan through a horizontal galvanized conduit of 1 m in diameter and 10m in length at a speed of 10 m/s. What size motor should be used if its efficiency is 90% and that of the fan is 20%? I'm not sure where to start. My professor hasn't explained much about this subject.
Milk is flowing through a heat exchanger at a rate of 2000 kg/h. The heat exchanger supplies 111,600 kJ/h. The outlet temperature of the product is 95℃. Determine the inlet temperature of the milk. The product specific heat is 3.9kJ/(kg℃). Show PBD and complete solution.
An air-cooled condenser has an h value of 30 W/m2-K based on the air-side area. The air-side heat transfer area is 190 m2 with air entering at 27°C and leaving at 40°C. If the condensing temperature is constant at 49°C, what is the air mass flow rate in kg/s? Let Cp(air) = 1.006 kJ/kg-K. Draw and label the temperature-flow diagram. Round off your answer to three (3) decimal places.
For an exhaust valve, the mass flow rate through the valve is 1.26 kg/s. The flow coefficient is 0.65 and the cylinder pressure and temperature are 625 kPa and 820 K. Assume exhaust system pressure is 103 kPa, the specific heat ratio is 1.4 and R =287J/ kg.K. The effective area of the valve is (SI unit): Select one: O a. 3.45*10-2 O b. 0.85*10-2 O c. 2.2*10-3 O d. 1.85*10-3 O e. 1.42*10-3
A heat exchanger is heating water from 50 0 F to 160 0 F using steam on the shell at atmospheric pressure condensing at 212 0 F. If the overall U is 710 BTU/(hr 0 F ft2) and the exchange rate is 9,000,000 BTU/hr, what tube area is needed?
Counterflow to cool the oil in the lubrication system of a large industrial gas turbine. A double-pipe heat exchanger is used. Coolant flowing through the inner pipe (Cp=4178) J/kg.°C) and oil flowing through the ring channel (Cp=2005.5 J/kg.°C) mass flow rates are 0.2 and 0.4, respectively kg/s. Oil enters the heat exchanger at 60 oC and leaves at 40 oC. Water inlet temperature 30 is oC. The heat transfer coefficient on the ring side is 500 W/m2K. Diameter of thin-walled inner tube is 25 mm, the inner diameter of the outer ring is 45 mm. Pollution resistance in the inner pipe where city mains water is used It is 0.000176 m2K/W. The deposit on the oil side is negligible. a) The heat transfer coefficient in the inner pipe b) Total heat transfer coefficient, c) Calculate the length of the heat exchanger. d) If a 4 m long hairpin is used in the heat exchanger, the required number of hairpins set.