Chapter_02 - CHAPTER 2 1 An ammonia vapor refrigeration cycle operates at an evaporator temperature of 16 C and a condensing temperature of 32 C.pdf

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Chapte Chapter_0 r_02 2 - CHAPT CHAPTER ER 2 1 An ammon ammonia ia vapor vapor refr refrige igerat ration ion cycl cycle e operat operates es at an evap evapora orator tor temper temperatu ature re of 16 C and and a cond condens ensing ing te te …

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Chapter_02 - CHAPTER 2 1 An ammonia vapor refrigeration... SCHOOL

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1. An ammonia ammonia vapor vapor refrigerati refrigeration on cycle operates operates at an evapora evaporator tor temperatu temperature re of –16 C and a condensing temperature of 32 C. Determine the coefficient of performance (a) for an ideal saturation cycle, (b) for wet compression with saturated vapor leaving the compressor, and (c) if the vapor at suction to the compressor is superheated 6 degrees. Solution: (a) Ideal Ideal satura saturatio tion n cycle cycle

State points

t , C

p , kPa

h , kJ/kg

1 2 3 4

-16 105 32 -16

227.04 1239.60 1239.60 227.04

1442.60 1690.00 351.47 351.47

COP

h

h

h

h

.

(b) Wet compre compressi ssion on cycle cycle https://www.co https://www.cou ursehero.com/file/12230069/Chapter-02/

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Chapte Chapter_0 r_02 2 - CHAPT CH APTER ER 2 has An ammon am monia ia vapor vapor blurred refr refrige igerat ration ion cycl cycle e operat operates es atup an to evap evapora orator tor temper tem peratu ature re of 16 C and and a cond condens ensing ing te te … preview Sign This 1has intentionally sections. sections. view the full version.

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State points

t , C

p , kPa

h , kJ/kg

1 2 3 4

-16 32 32 -16

227.04 1239.60 1239.60 227.04

1288.0 1487.18 351.47 351.47

Get Answer COP

h

h

h

h

. .

.

.

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(c) (c) With With supe superh rhea eatt

State points

,C

, kPa

, kJ/kg

1 2 3 4

-10 113 32 -16

227.04 1239.60 1239.60 227.04

1456 1713 351.47 351.47

COP

h

h

h

h

. .

.

2. A standard standard vapor compress compression ion system system produces produces 20 tons of refrigerati refrigeration on using using R-12 as a refrigerant refrigerant while operating between a condenser temperature of 42 C and an evaporator temperature of –25 C. Ask a homework question refrigera ting effect in kJ/kg, (b) the circulating rate in kg/s, (c) the power https://www.courseheDetermine ro.com/file/12230(a) 069/the Chaprefrigerating ter-02/

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suppter_0 p r_02 ie 2, - CHAPT t eER CO2P1, An e ammon t monia e eiaavapor t rpor ejerefr cteigerat inionWcycl , aenoperat teseatvan o uevap meorator otor wtemper ratperatu e iature n Lresof . 16 C and Chapte Cha CHAPTER am va refrige ration cycle operates evapora tem and a cond condens ensing ing te te …




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Table of important properties: State points 1 2 3 4

,C -25 42 42 -25

, m3/kg 131.3

, kJ/kg 340.4 377 240.6 240.6

(a) Refrig Refrigera eratin ting g Effec Effect: t: Q A

h

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& W & h m

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(d) COP

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Chapte Chapter_0 r_02 2 - CHAPT CH APTER ER 2 has An ammon am monia ia vapor vapor blurred refr refrige igerat ration ion cycl cycle e operat operates es atup an to evap evapora orator tor temper tem peratu ature re of 16 C and and a cond condens ensing ing te te … preview Sign This 1has intentionally sections. sections. view the full version.

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3. An ammonia ammonia simple simple saturation saturation cycle operates operates between evaporator and condenser condenser temperatures of –20 C and 35 C, respectively. The system is to be used in producing 5000 kg of ice at –12 C from water at 29 C in 20 hrs. Assuming losses to be 20 percent of the heat to be absorbed from the water, determine (a) the mass flow rate, (b) the heat rejected in the condenser, and (c) the power required by the compression.



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15/07/ 15/07/201 2018 Chapter_0 r_02 2 - CHAPT CHAPTER ER 2 1 An ammon ammonia ia vapor vapor refr refrige igerat ration ion cycl cycle e operat operates es at an evap evapora orator tor temper temperatu ature re of 16 C and and a cond condens ensing ing te te … Image of8page 5 Chapte

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Type your question here! Please include all relevant details, attachments, and requirements so your tutor can provide a PROFESSOR TAGS complete answer. Fall '15 patrickliwag Trigraph, Mass flow rate, Vapor-compression refrigeration, State points TERM

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Chapte Chapter_0 r_02 2 - CHAPT CHAPTER ER 2 1 An ammon ammonia ia vapor vapor refr refrige igerat ration ion cycl cycle e operat ope rates es at Hero an evap evapora orator tor temper temperatu ature re of 16 C and and a cond condens ensing ing te te … Get Course

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Chapter_02 - CHAPTER 2 1 An ammonia vapor refrigeration cycle operates at an evaporator temperature of 16 C and a condensing temperature of 32 C.pdf

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