SEMIFINAL PROJECT IN ME 3215COMBUSTION ENGINEERINGPROBLEM:Cooling water for 507 Horsepower Diesel Engine is to be cooled by using an intermediatecooling heat exchanger as follows.At Counterflow Heat exchanger.Jacket water in --- 60 °CJacket water out38 °CTower water in27 °CTower water out --54 °CTo be done: Make the necessary valid assumptions and calculate the flow through heatexchanger for the following quantities:kg1. Jacket water, inseckg2. Tower water, insecto coling oNEAT EXCNANGERDESELENGEfrom cool

Solution :- GIven data :- 507hp = 507×746 WP = 378222 WJacket water in = 60οCJacket water out =…

Answered: sec 2. Tower water, in kg sec MAT…

Engineering

Mechanical Engineering

sec 2. Tower water, in kg sec MAT DICNANER DESEL %3D

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter6: Forced Convection Over Exterior Surfaces

Section: Chapter Questions

Problem 6.8P

See similar textbooks

Similar questions

1. A heat exchanger is located on the roof of a warehouse to heat the air in winter. It is a coil-shaped pipe into which water vapor enters at 0.1 MPa and 300 °C and leaves with a quality of 30%. The warehouse has the following dimensions: 80m x 160m x 10m. The air must be heated from 5°C to 22°C. a. What must be the mass flow rate of the water to heat the air in less than half an hour? b. We want to cool the steam from the exchanger outlet and bring it up to 50 °C. For this, a mixing chamber with water at 20 °C is used, what will be the proportion of the steam mixture? c. The exchanger is damaged and only liquid water can be used at the same pressure (inlet T. 1 °C below saturation and outlet T. at 30°C). How long does it take to heat the air with the same flow of water?
A steam condenser receives 10 kg per second of steam with an enthalpy of 2570 KJ/kg. Steam condenses into liquid and leaves with an enthalpy of 160 KJ/kg, if cooling water passes through the condenser with temperature increases from 13oC to 24oC. Calculate the cooling water flow rate in kg/sec. pls dont skip anything show all solution including conversion of units
The condensing pressure for a Rankine engine is 0.001325 MPavac. Calculate the following for steam flow rate = 1 kg/sec of steam when the steam at the beginning of expansion is at 119.6 deg SH and 4.0 Mpaa. Draw the TS and equipment diagrams for the ideal and actual case and find for the following for the ideal case: Pump work in KW. Ans. Ideal heat rate in KJ/KW-hr. Ans. Rankine engine efficiency (%). Ans. Cycle thermal efficiency ( %). Ans
Re(Local)=5.05*10^6. Use Example 2B.2 as reference. Find out the total convective heat transfer rate from the board in Example 2B.2 (solve the bolded part)
3.24 You want to cool air from 150°C to 60°C but you cannot afford a custom-built heat exchanger. You find a used cross-flow exchanger (both fluids unmixed) in storage. It was previously used to cool 136 kg/min of NH3 vapor from 200°C to 100°C using 320 kg/min of water at 7°C; U was previously 480 W/m²K. How much air can you cool with this exchanger, using the same water supply, if U is approximately unchanged? (Actually, you would have to modify U using the methods of Chapters 6 and 7 once you had the new air flow rate, but that is beyond our present scope.)
Q3// Answer A or B All The plant capacity factor of power plant 50%, the peak load is 30MW, the load factor is 60% and plant use factor 80%. Find: the daily output power and the plant reserve capacity. B// What are the methods of draught in cooling towers. Demonstrate them with drawings. What is the relationship between the cooling tower and condenser.
A steam condenser receives 10 kg per second of steam with an enthalpy of 2570 KJ/kg. Steam condenses into liquid and leaves with an enthalpy of 160 KJ/kg, if cooling water passes through the condenser with temperature increases from 13oC to 24oC. Calculate the cooling water flow rate in kg/sec. Show conversion of units pls
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.
Please find the highest thermal efficiency possible, while remaining within the boundaries. What is required: -Power produced must be at least 60 Mega Watts -Thermal efficiency must be greater than 36% -Back-work ratio must be smaller than 48% Assume: -air is the working fluid -specific heats vary with temperature (use table A-17) -Compressor inlet is at 1atm and 300k -the combustion process is isobaric and is modeled as a heat exchanger -Turbine exhaust is the same pressure as compressor inlet Compressor specifics: -Max volume flow rate (m^3/h) = 600,000 -Max outlet pressure (atm) = 12 -Isentropic efficiency = 90% Combustion chamber and gas tubine specifics (Note these come as a set) -Max pressure = 16.7 atm -Max temp = 1500 (celcius) -Turbine isentropic efficiency = 92% -Max heat rate = 230MW
Q.1. A refrigeration process with interstage cooling uses refrigerant HFC-134a, and the outlet of the condenser is to be saturated liquid at 40°C. Refer to the following figure for stream numbers in your solution. The pressure of the flash chamber and the intermediate pressure between compressors is to be 290 kPa. The evaporator is to operate at -20°C and the outlet is to be saturated vapor. The flowrate of stream 1 is 23 kg/h. The flash chamber may be considered adiabatic. The compressors may be considered to be 80% efficient. a) What is the power input required to the first compressor? b) What are the flowrates of streams 6 and 7? What is the enthalpy of stream 4? Hot Side 6 5 Condenser 2nd Stage Compressor Throttle Valve 7 Flash Chamber Vapor Phase Only 1st Stage Compressor 8 Throttle Valve Evaporator 1 2 Cold Side
6.3 A food storage chamber requires a refrigeration system of 15-ton capacity operating at an evaporator temperature of -8°C and a condenser temperature of 30°C. Refrigerant ammonia (R-717) is used and the system operates under сapacity saturated conditions. Determine: a. С.О.Р. b. Refrigerant flow rate c. Rate of heat removed by condenser Repeat problem 6.3, with the refrigerant subcooled by 5°C before entering the expansion valve and vapor superheated by 6°C.
Part I : Analysis of heat exchangers in engineering applications(max. 5 pages)Select any thermal energy system you are interested. Describe the system and statehow the system works. The system should have at least one heat exchanger.Analyse the design of the heat exchangers and their functions in the system. Part Iand Part II are connected. Select a system you are able to complete the exergyanalysis in Part II.Part II: Exergy analysis & performance optimisation of heat exchangersfor a thermal energy system (max. 5 pages)Perform exergy analysis and performance optimization of the thermal energy systemin Part I. For the above question, the thermal energy system i have chosen is a steam rankine cycle, so for part II, i would like exergy analysis and performance optimistaion to be done 3 times over for a steam rankine cycle, show full working calculations for each and explanations. Provide references for any values used.