1 / 27

Heating and Air Conditioning I

Heating and Air Conditioning I. Principles of Heating, Ventilating and Air Conditioning R.H. Howell, H.J. Sauer, and W.J. Coad ASHRAE, 2005. basic textbook/reference material For ME 421 John P. Renie Adjunct Professor – Spring 2009. Chapter 2 - Thermodynamics.

aelwen
Download Presentation

Heating and Air Conditioning I

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Heating and Air Conditioning I Principles of Heating, Ventilating and Air Conditioning R.H. Howell, H.J. Sauer, and W.J. Coad ASHRAE, 2005 basic textbook/reference material For ME 421 John P. Renie Adjunct Professor – Spring 2009

  2. Chapter 2 - Thermodynamics • Thermodynamic Applied to Refrigeration • Vapor compression systems • Absorption systems, steam-jet vacuum systems • Centrifugal systems • Refrigerants • Ammonia and sulfur dioxide • Halogenated hydrocarbons (temperature and application-pressure) • R-22, R-134a versus R-11 and R-12 • Discussion of properties … • Discussion of number system R-ABC

  3. Chapter 2 - Thermodynamics • Thermodynamic Applied to Refrigeration • Vapor compression systems – schematic diagram

  4. Chapter 2 - Thermodynamics • Thermodynamic Applied to Refrigeration • Vapor compression systems – pressure – enthalpy plot • Metering device • Evaporator • Compressor • Condenser

  5. Chapter 2 - Thermodynamics • Thermodynamic Applied to Refrigeration • Vapor compression systems – pressure – enthalpy plot

  6. Chapter 2 - Thermodynamics • Thermodynamic Applied to Refrigeration • Vapor compression systems – pressure – enthalpy plot – R-134a

  7. Chapter 2 - Thermodynamics • Thermodynamic Applied to Refrigeration • Vapor compression systems – pressure – enthalpy plot – R-134a

  8. Chapter 2 - Thermodynamics • Thermodynamic Applied to Refrigeration • Vapor compression systems – pressure – enthalpy plot

  9. Chapter 2 - Thermodynamics • Thermodynamic Applied to Refrigeration • Vapor compression systems – First law of thermodynamics • QL + W = QH

  10. Chapter 2 - Thermodynamics • Thermodynamic Applied to Refrigeration • Vapor compression systems – Example • COP – “goodies”/”payment”

  11. Chapter 2 - Thermodynamics • Thermodynamic Applied to Refrigeration • Vapor compression systems

  12. Chapter 2 - Thermodynamics • Thermodynamic Applied to Refrigeration • Components - condenser

  13. Chapter 2 - Thermodynamics • Thermodynamic Applied to Refrigeration • Components - evaporator

  14. Chapter 2 - Thermodynamics • Thermodynamic Applied to Refrigeration • Components – expansion device

  15. Chapter 2 - Thermodynamics • Thermodynamic Applied to Refrigeration • Summary

  16. Chapter 2 - Thermodynamics • Thermodynamic Applied to Refrigeration • Summary

  17. Chapter 2 - Thermodynamics • Thermodynamic Applied to Refrigeration • Summary - performance

  18. Chapter 2 - Thermodynamics • Thermodynamic Applied to Heat Pumps

  19. Chapter 2 - Thermodynamics • Thermodynamic Applied to Heat Pumps

  20. Chapter 2 - Thermodynamics • Thermodynamic Applied to Heat Pumps - Equations

  21. Chapter 2 - Thermodynamics • Thermodynamic Applied to Heat Pumps - Equations

  22. Chapter 2 - Thermodynamics • Thermodynamic Applied to Heat Pumps – Final Comments

  23. Chapter 2 - Thermodynamics • Thermodynamic Applied to Heat Pumps – Final Comments

  24. Chapter 2 - Thermodynamics • Absorption Refrigeration Cycle • Absorption refrigeration cycles are heat-operated cycles in which the secondary fluid, the absorbent, is used to absorb the primary fluid, gaseous refrigerant, that has been vaporized in the evaporator. • Components • Typical evaporator (9-10) • Vapor absorber (11-3) generates high refrigeration concentration in fluid) • Liquid pump (3-4), increases pressure of carrier secondary fluid • Generator (1-7) boils the refrigerant out of high pressure carrier liquid • Typical condenser (7-8) subcools the gaseous refrigerant

  25. Chapter 2 - Thermodynamics • Absorption Refrigeration Cycle

  26. Chapter 2 - Thermodynamics • Absorption Refrigeration Cycle

  27. Chapter 2 - Thermodynamics • Absorption Refrigeration Cycle

More Related