A chiller tank with a water volume capacity of 20 M3. There are 2 chiller units with a capacity of 20 PK each to cool the water in the chiller tub. 1 unit of cold chiller water transfer pump is used to the production area with a capacity of 5 M3/hour. The chiller water temperature sent to production is 15 oC and the pressure is 4 bar. The distance of the 2 inch stainless pipe from the chiller pump to the double jacket mixing tank production is 100 meters. The diameter of the inlet and outlet pipes for the double jacket mixing tank is 1 inch. The chiller water storage capacity in a conventional double jacket mixing tank is 400 liters. (mixing tank capacity is 1500 kg). Questions: 1. How much time is needed to cool the water in the mixing tank from the initial temperature of 90 oC to 40 oC? 2. How much energy (BTU) is needed to cool the water temperature from 90 oC to 40 oC? 3. How much energy is lost along the 100 meters of chiller water transfer pipe? 4. If the number of 1500 Kg double jacket tanks is 5 units, how much chiller energy is needed to cool the water temperature in each tank from 90 oC to 40 oC? 5. Is there a decrease in chiller water pressure that reaches the double jacket mixing tank? If yes, why and how to calculate it accurately?

Name: A chiller tank with a water volume capacity of 20 M3. There are 2 chil
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Description: A chiller tank with a water volume capacity of 20 M3. There are 2 chiller units with a capacity of 20 PK each to cool the water in the chiller tub. 1 unit of cold chiller water transfer pump is used to the production area with a capacity of 5 M3/hour

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

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A chiller tank with a water volume capacity of 20 M3. There are 2 chiller units with a capacity of 20 PK each to cool the water in the chiller tub. 1 unit of cold chiller water transfer pump is used to the production area with a capacity of 5 M3/hour. The chiller water temperature sent to production is 15 oC and the pressure is 4 bar. The distance of the 2 inch stainless pipe from the chiller pump to the double jacket mixing tank production is 100 meters. The diameter of the inlet and outlet pipes for the double jacket mixing tank is 1 inch. The chiller water storage capacity in a conventional double jacket mixing tank is 400 liters. (mixing tank capacity is 1500 kg).

Questions:

1. How much time is needed to cool the water in the mixing tank from the initial temperature of 90 oC to 40 oC?

2. How much energy (BTU) is needed to cool the water temperature from 90 oC to 40 oC?

3. How much energy is lost along the 100 meters of chiller water transfer pipe?

4. If the number of 1500 Kg double jacket tanks is 5 units, how much chiller energy is needed to cool the water temperature in each tank from 90 oC to 40 oC?

5. Is there a decrease in chiller water pressure that reaches the double jacket mixing tank? If yes, why and how to calculate it accurately?

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