PROBLEM : IN A CERTAIN REFGN. SYS. FOR LOW TEMP. APPLICATION, A TWO - STAGE OPERATION IS DESIRABLE W/C EMPLOYS AMMONIA ( NH3 ) SYS. THAT SERVES A 30 TONS EVAPORATOR AT -30°C. THE SYS. USES A DIRECT - CONTACT CONDENSER, & THE CONDENSER TEMP. IS 40°C. FIND THE FOLLOWING : a. SKETCH THE SCHEMATIC DIAG. OF THE SYSTEM b. THE COMPLETE PROCESS ON THE P-h DIIAGRAM c. THE CASCADE CONDENSER PRESSURE IN KPa FOR MINIMUM WORK.

PROBLEM : IN A CERTAIN REFGN. SYS. FOR LOW TEMP. APPLICATION, A TWO - STAGE OPERATION IS DESIRABLE W/C EMPLOYS AMMONIA ( NH3 ) SYS. THAT SERVES A 30 TONS EVAPORATOR AT -30°C. THE SYS. USES A DIRECT - CONTACT CONDENSER, & THE CONDENSER TEMP. IS 40°C. FIND THE FOLLOWING : a. SKETCH THE SCHEMATIC DIAG. OF THE SYSTEM b. THE COMPLETE PROCESS ON THE P-h DIIAGRAM c. THE CASCADE CONDENSER PRESSURE IN KPa FOR MINIMUM WORK.

Refrigeration and Air Conditioning Technology (MindTap Course List)

8th Edition

ISBN:9781305578296

Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Publisher:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Chapter47: High-pressure, Low-pressure, And Absorption Chilled-water Systems

Section: Chapter Questions

Problem 13RQ: The subcooling temperature in a condenser can be measured by taking the difference between the A....

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