In a dairy plant, milk at 4C is pasteurized continuouslyat 72C at a rate of 12 L/s for 24 hours a day and 365days a year. The milk is heated to the pasteurizing temperatureby hot water heated in a natural-gas-fired boiler that has anefficiency of 82 percent. The pasteurized milk is then cooledby cold water at 188C before it is finally refrigerated back to4C. To save energy and money, the plant installs a regeneratorthat has an effectiveness of 82 percent. If the cost of naturalgas is $1.30/therm (1 therm = 105,500 kJ), determine howmuch energy and money the regenerator will save this companyper year and the annual reduction in entropy generation.
In a dairy plant, milk at 4C is pasteurized continuouslyat 72C at a rate of 12 L/s for 24 hours a day and 365days a year. The milk is heated to the pasteurizing temperatureby hot water heated in a natural-gas-fired boiler that has anefficiency of 82 percent. The pasteurized milk is then cooledby cold water at 188C before it is finally refrigerated back to4C. To save energy and money, the plant installs a regeneratorthat has an effectiveness of 82 percent. If the cost of naturalgas is $1.30/therm (1 therm = 105,500 kJ), determine howmuch energy and money the regenerator will save this companyper year and the annual reduction in entropy generation.
Chapter3: The First Law Of Thermodynamics
Section: Chapter Questions
Problem 98CP: In a diesel engine, the fuel is ignited without a spark plug. Instead, air in a cylinder is...
Related questions
Question
In a dairy plant, milk at 4C is pasteurized continuously
at 72C at a rate of 12 L/s for 24 hours a day and 365
days a year. The milk is heated to the pasteurizing temperature
by hot water heated in a natural-gas-fired boiler that has an
efficiency of 82 percent. The pasteurized milk is then cooled
by cold water at 188C before it is finally refrigerated back to
4C. To save energy and money, the plant installs a regenerator
that has an effectiveness of 82 percent. If the cost of natural
gas is $1.30/therm (1 therm = 105,500 kJ), determine how
much energy and money the regenerator will save this company
per year and the annual reduction in entropy generation.
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution!
Trending now
This is a popular solution!
Step by step
Solved in 7 steps with 7 images
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.Recommended textbooks for you
Principles of Physics: A Calculus-Based Text
Physics
ISBN:
9781133104261
Author:
Raymond A. Serway, John W. Jewett
Publisher:
Cengage Learning
College Physics
Physics
ISBN:
9781285737027
Author:
Raymond A. Serway, Chris Vuille
Publisher:
Cengage Learning
Principles of Physics: A Calculus-Based Text
Physics
ISBN:
9781133104261
Author:
Raymond A. Serway, John W. Jewett
Publisher:
Cengage Learning
College Physics
Physics
ISBN:
9781285737027
Author:
Raymond A. Serway, Chris Vuille
Publisher:
Cengage Learning
Physics for Scientists and Engineers, Technology …
Physics
ISBN:
9781305116399
Author:
Raymond A. Serway, John W. Jewett
Publisher:
Cengage Learning