Question 2: Refrigeration. IMPORTANT: (1) You need the R134a pressure-enthalpy (p-h) chart for answering this question. Question 2 - Section A: (i) With the aid of sketches, describe how an absorption refrigeration system works, explaining which components are at high pressure side and which components are at low pressure side of the system. (ii) List two working pairs used in absorption refrigeration, specifying the refrigerant and the absorbent in each of those working pairs. (iii) Briefly discuss two reasons why vapour absorption refrigeration systems are in popular use even if the co-efficient of performance (COP) of such systems can be very low. (iv) Why is it beneficial to have the refrigerant leaving the evaporator of a vapour compression refrigeration system to be at a superheated state?
Question 2: Refrigeration. IMPORTANT: (1) You need the R134a pressure-enthalpy (p-h) chart for answering this question. Question 2 - Section A: (i) With the aid of sketches, describe how an absorption refrigeration system works, explaining which components are at high pressure side and which components are at low pressure side of the system. (ii) List two working pairs used in absorption refrigeration, specifying the refrigerant and the absorbent in each of those working pairs. (iii) Briefly discuss two reasons why vapour absorption refrigeration systems are in popular use even if the co-efficient of performance (COP) of such systems can be very low. (iv) Why is it beneficial to have the refrigerant leaving the evaporator of a vapour compression refrigeration system to be at a superheated state?
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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Transcribed Image Text:Question 2: Refrigeration.
IMPORTANT:
(1) You need the R134a pressure-enthalpy (p-h) chart for answering this question.
Question 2 - Section A:
(i) With the aid of sketches, describe how an absorption refrigeration system works, explaining
which components are at high pressure side and which components are at low pressure side of
the system.
(ii) List two working pairs used in absorption refrigeration, specifying the refrigerant and the
absorbent in each of those working pairs.
(iii) Briefly discuss two reasons why vapour absorption refrigeration systems are in popular use
even if the co-efficient of performance (COP) of such systems can be very low.
(iv) Why is it beneficial to have the refrigerant leaving the evaporator of a vapour compression
refrigeration system to be at a superheated state?
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