Example 6.20. Estimate the heat transfer area for an exchanger to cool an organic liquid from105°C to 50°C. The hot liquid will flow at a rate of 10000 kg/h and will be cooled by using circulatingfoul water containing some salt. The cooling water will leave at 40°C. It is proposed to use one shellpass and two tube pass exchanger for the above duty.Cooling water inlet temperature = 25°CHeat capacity of water = 4.2 kJ/kg °CHeat capacity of hot liquid = 2.84 kJ/kg °CF₁, the temperature correction for the design will be 0.85.The recommended overall heat transfer coefficient U will be 600 W/m² °C.

Hot liquid flow rate F = 1000 kg/ h Organic liquid inlet temperature = 105 oC Organic liquid outlet…

Answered: Example 6.20. Estimate the heat…

Introduction to Chemical Engineering Thermodynamics

8th Edition

ISBN:9781259696527

Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart

Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart

Chapter1: Introduction

Section: Chapter Questions

Problem 1.1P

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Number 3 A food product with 73% moisture content in a 5 cm diameter can wants to be frozen. The density of the product is 970 kg / m³, the thermal conductivity is 1.2 W / (m K), and the initial freezing temperature is -1.75 ° C. After 10 hours in the freezing medium -25 ° C, the product temperature becomes -10 ° C. Estimate the convection heat transfer coefficient of the freezing medium. Assume the can as an infinite cylinder. identify: a. h = Answer in W / (m² K).
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Pls provide a complete and step by step solution. TY!
Problem 4. In order not to damage the resistance in the kettles, the difference between the temperature of the heater and the fluid should not exceed 25 °C. If the heat transfer area between the fluid and the heater is 78.5 cm² and the heat transfer coefficient is 400 W/m².K, find the maximum allowable power of the heater in order to boil water?
1. A plastic (k = 0.5 W/m K) pipe carries a coolant at -35 °C with a heat-transfer coefficient of 300 W/m².K. The pipe ID is 3 cm and the OD is 4 cm. The exterior pipe surface is exposed to air at 25°C with a heat-transfer coefficient of 20 W/m²K. Radiative heat transfer may be neglected in this problem. (a) Calculate the rate of heat transfer to the coolant per meter of pipe length. (b) Calculate the temperature of the exterior pipe surface.
1. Liquid oxygen is stored in a spherical tank with D = 5 ft. The surface of the tank was isolated with insulation material A with a thickness of 8 in and outside with material B with a thickness of 0.5 ft (kA = 0.022 Btu / j.ft.oF and kB = 0.04 Btu / j.ft.oF). Tank surface temperature (–4) oC and insulation surface temperature 50oC Calculate heat transfer from air to liquid oxygen tank! 2. A 2.0 inch Schedule 40 pipe has k = 27 Btu / h.ft.oF. The fluid in the pipe has h = 30 Btu / h.ft2.oF. The outer surface of the pipe is coated with a fiber glass insulation thickness of 4 mm with k = 0.023 Btu / h.ft.oF. The convection coefficient on the outer surface of the insulation is 2.0 Btu / h.ft2.oF. The temperature of the fluid contained in the pipe is 320oF and the ambient temperature is 70oF. Calculate the heat loss per unit length of pipe! 3. Two parallel plates with a diameter of 60 cm, separated at a distance of 15 cm. The temperature on the top surface is 4 oC and the temperature on…
A copper electric wire of radius R, = 1 mm is isolated by a layer of PVC so that the outer radius of the wire Rg = 2 mm, as shown in Figure below. The wire exchanges heat with the air at 20°C according to a heat transfer coefficient h=20 W/m2°c: Given that : k=copper electrical conductivity=4.0 × 1070hm-'m¯! kpvc= PVC thermal conductivity = 0.3- m°C kco = copper thermal conductivity = 100 m°C %3D (amp/m)² And that the electrical heating source is given by : S, amp²s /kgm³ If the temperature (T,) on the outer surface (r = RG) is 25°C, what is the electrical current C (amp) that passes through this wire? Dont forget to state your hypothesis clearly. Hi, Could you please tell me what the book's name is? Thank you!

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