A heat exchanger, shown below, is used to cool an air flow from 550 K to 250 K, both states at 1 MPa. Thecoolant is a water flow at 30 °C, 0.1 MPa. If the water leaves as saturated vapor, 0.1 MPa.1 air3 water The initial state enthalpy for air (h,(kJ/kg)) is equal to:The final state enthalpy for air (h2(kJ/kg)) is equal to:The initial state enthalpy for water (h3(kJ/kg)) is equal to:

Given Data State 1: Air, 550 K,1 MPa State 2: Air, 250 K,1 MPa State 3:Water,30°C,0.1 MPa State…

Answered: The initial state enthalpy for air…

The initial state enthalpy for air (h,(kJ/kg)) is equal to: The final state enthalpy for air (h2(kJ/kg)) is equal to: The initial state enthalpy for water (h3(kJ/kg)) is equal to:

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.

Chapter10: Heat Exchangers

Section: Chapter Questions

Problem 10.17P

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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

A heat exchanger, shown below, is used to cool an air flow from 550 K to 250 K, both states at 1 MPa. The
coolant is a water flow at 30 °C, 0.1 MPa. If the water leaves as saturated vapor, 0.1 MPa.
1 air
3 water

The initial state enthalpy for air (h,(kJ/kg)) is equal to:
The final state enthalpy for air (h2(kJ/kg)) is equal to:
The initial state enthalpy for water (h3(kJ/kg)) is equal to:

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