Searching for Low Impact Fluid with Boiling Point of 150-180 F

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SUMMARY

The discussion focuses on identifying suitable working fluids for a waste heat recovery system with a boiling point between 150-180°F (approximately 65.6-82.2°C). Participants emphasize the need for fluids that are minimally flammable, nontoxic, and environmentally friendly. The working pressure for the system is set at 1 ATM, with considerations for lower pressures if water is used as the working fluid. The specified boiling point range aligns with the facility's operational temperature for effective waste heat recovery.

PREREQUISITES
  • Understanding of waste heat recovery systems
  • Familiarity with fluid properties and safety classifications
  • Knowledge of boiling point conversions between Fahrenheit and Celsius
  • Basic principles of thermodynamics related to pressure and temperature
NEXT STEPS
  • Research suitable working fluids with boiling points in the specified range, such as R-134a or R-1234yf
  • Explore the environmental impact assessments of various refrigerants
  • Investigate the thermodynamic properties of fluids under different pressures
  • Learn about safety standards and regulations for handling refrigerants
USEFUL FOR

Engineers and technicians involved in thermal systems design, environmental scientists assessing refrigerant safety, and professionals focused on optimizing waste heat recovery processes.

chemisthypnos
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I am looking for a good working fluid whose boiling point is in the range of 150-180 F for a waste heat recovery system. The fluid should be minimally flammable, preferably nontoxic, and low in environmental impact. Does anyone know of any working fluids that match this description?
 
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chemisthypnos said:
I am looking for a good working fluid whose boiling point is in the range of 150-180 F for a waste heat recovery system. The fluid should be minimally flammable, preferably nontoxic, and low in environmental impact. Does anyone know of any working fluids that match this description?
What working pressure?
What is the reason for the boiling point range requirement?
 
The working pressure is going to be 1 ATM ( atmospheric pressure). I am also considering using pressure below ambient if water is the working fluid so it will boil at a lower temperature.

The reason for the boiling point range is that 150-180 F will be the relatively constant temperature in the facility that we want to use waste heat recovery on.
 

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