7. Consider a LiBr machine operating according to the following schematics: GENERATOR HIGH TEMPERATURE CONSTAT US GNATON LNES HEAT RESTRICTOR RESTRICTOR VAPOR O SPILLOVER EVAPORATOF EMPORSTO e R OME TEMEU T Tu OuT TEMPERATURE TEMPERR The system operates as follows: I. Refrigeration load = 500 tons II. Evaporator temperature, state 8 = 41.1 °F II. Absorber equilibrium temperature, state 3 = 107.2 °F Actual solution temperature, state 4 = 100.9 °F V. IV. Solution temperature, state 5 = 170.3 °F Solution temperature, state 1= 209.6 °F Solution temperature, state 2 = 128.1 °F %3D VI. VII. VIII. Refrigerant vapor temperature, state 6 = 200 °F Refrigerant temperature, state 7 = 100 °F Refrigerant spill-over rate, state 9 = 2.5% of state 8 XI. Concentrations of solution on a LIBr Duhring's phase diagram per above temperatures IX. X. XII. Chilled water temperature delta = AT = 54 – 44 = 10 °F XIII. XIV. Cooling water tower water flow rate = 1800 GPM Cooling water temperature entering = 85 °F XV. Absolute pressure of generator = 65.9 mm Hg Mass fraction of LiBr in the solution from the absorber, Y, = 0.595 XVI. XVII. Mass fraction of LiBr in the solution from the generator, Y; = 0.646 PEFRSERANT VAPO PRESURE
7. Consider a LiBr machine operating according to the following schematics: GENERATOR HIGH TEMPERATURE CONSTAT US GNATON LNES HEAT RESTRICTOR RESTRICTOR VAPOR O SPILLOVER EVAPORATOF EMPORSTO e R OME TEMEU T Tu OuT TEMPERATURE TEMPERR The system operates as follows: I. Refrigeration load = 500 tons II. Evaporator temperature, state 8 = 41.1 °F II. Absorber equilibrium temperature, state 3 = 107.2 °F Actual solution temperature, state 4 = 100.9 °F V. IV. Solution temperature, state 5 = 170.3 °F Solution temperature, state 1= 209.6 °F Solution temperature, state 2 = 128.1 °F %3D VI. VII. VIII. Refrigerant vapor temperature, state 6 = 200 °F Refrigerant temperature, state 7 = 100 °F Refrigerant spill-over rate, state 9 = 2.5% of state 8 XI. Concentrations of solution on a LIBr Duhring's phase diagram per above temperatures IX. X. XII. Chilled water temperature delta = AT = 54 – 44 = 10 °F XIII. XIV. Cooling water tower water flow rate = 1800 GPM Cooling water temperature entering = 85 °F XV. Absolute pressure of generator = 65.9 mm Hg Mass fraction of LiBr in the solution from the absorber, Y, = 0.595 XVI. XVII. Mass fraction of LiBr in the solution from the generator, Y; = 0.646 PEFRSERANT VAPO PRESURE
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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solve h - k
Transcribed Image Text:7. Consider a LiBr machine operating according to the following schematics:
GENERATOR
CONDENSER
HIGH
TEMPERATURE
CONSTANT US CNCENTRATION LINES
HEAT
OUT
HEAT
EXOHANGER
SOLUTION
PUMP
RESTRICTOR
RESTRICTOR
VAPOR O
PES
SPILLOVER
EVAPORATO
EWPORSTOR eER GONEe
TEME E TEATUR
HEAT OUT
LOW
TEMPERATURE
TEMPER
The system operates as follows:
1. Refrigeration load = 500 tons
II. Evaporator temperature, state 8 = 41.1 °F
II.
Absorber equilibrium temperature, state 3 = 107.2 °F
Actual solution temperature, state 4 = 100.9 °F
Solution temperature, state 5 = 170.3 °F
IV.
V.
Solution temperature, state 1 = 209.6 °F
Solution temperature, state 2 = 128.1 °F
VI.
VII.
VIII.
Refrigerant vapor temperature, state 6 = 200 °F
Refrigerant temperature, state 7 = 100 °F
Refrigerant spill-over rate, state 9 = 2.5% of state 8
Concentrations of solution on a LiBr Duhring's phase diagram per above temperatures
IX.
X.
XI.
XII.
Chilled water temperature delta = AT = 54 – 44 = 10 °F
Cooling water temperature entering = 85 °F
XII.
XIV. Cooling water tower water flow rate = 1800 GPM
XV.
Absolute pressure of generator = 65.9 mm Hg
Mass fraction of LiBr in the solution from the absorber, Y, = 0.595
Mass fraction of LiBr in the solution from the generator, Y; = 0.646
XVI.
XVII.
rsad on N
Transcribed Image Text:h. Enthalpy of state 4 liquid, h. (BTU/Ibm)
i. Enthalpy of state 5 liquid, h; (BTU/lbm)
J. Enthalpy of state 1 liquid, h. (BTU/lbm)
k. Enthalpy of state 6 vapor, he (BTU/lbm)
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