Question 3: Several species of inhalational anaesthetics are used to start and maintain anaesthesia. They are volatile liquids at room temperature, so an apparatus called a vapourizer is used to convert some of the liquid anaesthetic to its gaseous form and mix it with diluent carrying gas (often a mixture of nitrous oxide and oxygen).
Question 3: Several species of inhalational anaesthetics are used to start and maintain anaesthesia. They are volatile liquids at room temperature, so an apparatus called a vapourizer is used to convert some of the liquid anaesthetic to its gaseous form and mix it with diluent carrying gas (often a mixture of nitrous oxide and oxygen).
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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Transcribed Image Text:Question 3:
Several species of inhalational anaesthetics are used to start and maintain anaesthesia. They are
volatile liquids at room temperature, so an apparatus called a vapourizer is used to convert some
of the liquid anaesthetic to its gaseous form and mix it with diluent carrying gas (often a mixture
of nitrous oxide and oxygen).
Carrying gas inlet
Temperature (°C)
P (mmHg)
Flow to vapourizing
chamber
17.3
151.2
Bypass Flow
28.3
250.1
+
4
2
4
4
Using the following data for the vapour pressure of isoflurane (C3H₂C1F5O) to calculate its
enthalpy of vapourization and boiling point. (Data obtained from Br. J. Anaesth. (1978), 50, 415.)
Volatile anaesthetic
Mixed gas outlet
36.2 42.4
349.4 449.5
47.8
551.2
52.2
649.3
56.4
752.9
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