Wayne K. and Lyla L. Masur HVAC Laboratory

Founding Director: Dr. S.A. Sherif

Professor of Mechanical and Aerospace Engineering

University of Florida

232 MAE Bldg. B, Gainesville, Florida 32611-6300, USA

Tel (352) 392-7821

Fax (352) 392-1071

E-mail: sasherif@ufl.edu

BRIEF HISTORY

The Wayne K. and Lyla L. Masur HVAC Laboratory was inaugurated in February 1995 in a ceremony attended by dignitaries from the University of Florida and the local, regional, and national American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) community. The Laboratory was founded by Dr. S.A. Sherif, Professor of Mechanical and Aerospace Engineering, employing a significant cash donation from the Masur family. Wayne Masur is a successful alumnus of the Mechanical Engineering Department at UF. The Laboratory serves both an instructional and a research mission. Among its research capabilities is a unique experimental facility designed to study frost and ice formation on industrial freezer coils under ice foggy conditions. The Laboratory also includes an air-conditioning demonstration facility, a cooling tower simulator, an air-water heat pump system, and a chilled-water system with an artificial load simulator. Currently, there is an experimental effort to develop deployable heat pump units employing rotary vane expanders for the U.S. Air Force. Hundreds of students have taken part in different instructional and research activities in the Laboratory since its creation in 1995. The Laboratory is housed in Room 110 of the Mechanical and Aerospace Engineering Building B on North-South Drive. For laboratory tours contact Dr. Sherif at (352) 392-7821.

RESEARCH PROJECTS PERFORMED

1. “A Feasibility Study of Vapor Compression Refrigeration Systems Employing Rotary Vane Expanders.” Air Force Research Laboratory (AFRL), July 1, 2004-June 30, 2006.

2. “Distributed Generation Combined with the Production of Fresh Water and Refrigeration.” USDA/U.S.-Egypt Joint Board on Scientific and Technological Cooperation, September 1, 2003-August 31, 2005.

3. “Integration of Space Thermal Management and Propulsion Systems.” NASA, June 1, 2003-May 31, 2004.

4. “Liquid Hydrogen Storage Onboard Spacecraft in Microgravity.” NASA, April 1, 2002-September 30, 2004.

5. “Ortho-Para Hydrogen Detection and Conversion.” NASA, April 1, 2002-September 30, 2004.

6. “Mass Gauging in Hydrogen Storage Vessels.” NASA, April 1, 2002-September 30, 2004.

7. “Transient Analysis of Pressure-Induced Transfer of Cryogenic and Gaseous Hydrogen in Storage Systems.” August 2002-May 2004.

8. “Weight Optimization of a Capillary-Pumped Thermal Management System.” NASA, June 1, 2002-May 31, 2003.

9. “Hydrogen Storage, Transportation and Handling.” NASA, March 25, 2002-September 30, 2004.

10. “Weight Optimization of Active Thermal Management Using a Novel Heat Pump.” NASA, June 1, 2001-May 31, 2004.

11. “Optimization of Heat Exchanger Inventory of a Two-Stage Vapor Compression Refrigeration Cycle.” 2002-2004

12. “Thermoeconomic Optimization of a Steam-Jet Refrigeration System.” 2001-2003.

13. “Comparative Analysis of Vapor Compression and Hybrid Liquid Desiccant Dehumidification Systems.” 2001-2003.

14. “Thermodynamic Analysis of Refrigerant Mixtures as R22 Substitutes in Water-Cooled Chiller Applications.” 2001-2003.

15. “Performance of a Combustion Turbine and Absorption Refrigeration Combined Cycle.” 2001-2003.

16. “Proof of Concept of the Ion Collider in Refrigeration Systems.” Florida Power and Light Company, June 1, 2001-December 31, 2002.

17. “Frost and Ice Fog Formation in Freezer Entryways.” ASHRAE, Inc., July 1, 2001-June 30, 2002.

18. “Frost Formation and Heat Transfer in the Supersaturated Zone in Industrial Freezers.” ASHRAE, Inc., July 1, 2000-June 30, 2001.

19. “A Study to Determine Heat Loads Due to Coil Defrosting-Phase II.” ASHRAE, Inc., September 1, 1999-January 31, 2003.

20. "Study and Analysis of Defrosting Loads with Psychrometric Effects." ASHRAE, Inc., July 1, 1999-June 30, 2000.

21. “Experimental Investigation of a Constant-Area Two-Phase Flow Ejector.” 1998-2000.

22. "First and Second Law Optimization of a Two-Stage Refrigeration System." 1998-2000.

23. "Optimization of Multistage Vapor Compression Cycles Using Genetic Algorithms." 1997-1999.

24. "Thermoeconomics of Lithium Bromide/Water Absorption Chillers and Heat Transformers." 1994-1999.

25. "An Integrated Hydrogen System for Niche Markets in Florida.” US DOE, May 1997 - February 1998.

26. "Economic Evaluation of Cool Mist, Level of Charge, Desuperheating, Subcooling, and Internal Tube Cleaning Devices." Florida Power and Light Company, Miami, Florida, January 1, 1995 - December 31, 1997.

27. "Electric Defrosting Analysis of a Finned Tube Evaporator Coil Using the Enthalpy Method." 1995-1997.

28. "Performance Analysis of Subcoolers, Intercoolers, and Liquid-to-Suction Heat Exchangers for Refrigeration and Air Conditioning Applications." Florida Power and Light Company, June 1996 - December, 1997.

29. "Analysis and Modeling of a Two-Phase Jet Pump of a Thermal Management System for Aerospace Applications-Phase II." NASA, May 1997-September 1997.

30. "Measurement and Analysis of Coil Defrosting Loads at Freezer Temperatures." ASHRAE, Inc., July 1, 1996 - June 30, 1997.

31. "Optimization of a Combined Power and Refrigeration Cycle Using Solar Thermal Heat Sources." 1996-1997.

32. "Thermodynamics of Triple Stage Vapor Compression Refrigeration Systems." 1995-1997.

33. "Analysis and Modeling of a Two-Phase Jet Pump of a Thermal Management System for Aerospace Applications-Phase I." NASA, May 1996-September 1996.

34. "A Study to Determine Heat Loads Due to Coil-Defrosting." ASHRAE, Inc., July 1, 1992 - January 31, 1997.

35. "Florida Alliance for Saving Taxes and Energy Resources (FLASTAR)." Florida Department of Community Affairs/Florida Energy Office, Tallahassee, Florida, January 1995 - June 1996.

36. "Effect of Level of Charge under Field Conditions on the Performance of Air Conditioning Systems." Florida Power and Light Company, January 1995 - December 1995.

37. "Experimental Evaluation of a Cool-Mist Unit on a Three-Ton Residential Air Conditioning System." Florida Power and Light Company, January 1995 - December 1995.

38. "Solar Chimneys for Power Generation." Florida Department of Community Affairs, Tallahassee, Florida, July 1994 - December 1995.

39. "Analysis of Icing and De-Icing of Aircraft." AFOSR, May 1994-December 1994.

40. "Experimental Investigation of the Performance of a Solid Desiccant Cooling System with Solar Regenerator." ASHRAE, Inc., July 1993 - June 1994.

41. "Coil Defrosting Loads at Freezer Temperatures." ASHRAE, Inc., July 1993 - June 1994.

42. "Transient Simulation and Economics of a Solar-Assisted Desiccant Air Conditioning System." ASHRAE, Inc., 1992-1994.

43. "Optimizing a District Heating System Using Search Methods." US Navy, 1992-1994.

44. "Demonstration and Performance Analysis of a Hybrid Solar Driven Desiccant Air Conditioning System." ASHRAE, Inc., 1992-1994.

45. "Analysis and Design Optimization of Two-Phase High-Speed Impact Cleansers." NASA, May 1993-December 1993.

46. "Biomass Reactor Powered Hot Water Heater." Florida Department of Community Affairs, October 1992 - October 1993.

47. "Heat Transfer Performance of a Roof-Spray Cooling System Employing the Transfer Function Method." US Navy, 1992-1993.

48. "Blended Refrigerants for Energy Conservation - Phase II." Florida Power and Light Company, March 1993 - July 1993.

49. "Blended Refrigerants for Energy Conservation-Phase I." Florida Power and Light Company, March 1993 - June 1993.

50. "Review Report on Steam-Jet Refrigeration." Florida Power and Light Company, February 1993 - March 1993.

51. "Analytical Investigation of Magnetic Refrigeration Systems for Hydrogen Liquefaction." US DOE, 1988-1993.

52. "Expected Performance from an Absorption Liquid Chiller as Part of an Incinerator-Fed District Heating and Cooling System." 1991-1992.

53. "Hydrogen Liquefaction." US DOE, August 1990 - July 1991.

54. "Solar Dehumidification." Laboratory for Architectural Science and Environmental Research (LASER), August 1990 - August 1991.

55. "Measurements of Heat and Mass Transfer under Conditions of Frost Deposition." ASHRAE, Inc., July 1990 - June 1991.

56. "Enhancement of In-Tube Heat Transfer and Pressure Drop Analysis of Various Refrigerants in a Horizontal Multi-Channel Boiling System." 1990 – 1991.

57. “Analysis of Cryogenic Liquid Hydrogen Storage Systems." US DOE, 1989-1991.

58. "Frost Growth and Heat Transfer in HVAC Equipment." 1989 – 1990.

59. "Hydrogen Liquefaction." US DOE, 1989 – 1990.

60. "Measurements of the Flow and Turbulence Characteristics of Extended Surface Heat Exchangers using Laser Doppler Velocimetry." 1989 – 1990.

61. "In-Tube Heat Transfer and Pressure Drop Analysis of Refrigerants in a Horizontal Multi-Channel Boiling System." 1989 – 1990.

62. "Thermodynamic and Economic Analysis of Hydrogen Liquefiers." US DOE, 1988-1990.

63. "Experimental and Simulated Performance of a Solar Water Heating System for Residential Applications." 1988-1990.

64. "Hydrogen Liquefaction." US DOE, 1988 – 1989.

65. "Measurements of the Flow and Turbulence Structure in Extended Surface Heat Exchangers Using a Two-Color Laser Doppler Anemometer." 1988 – 1989.

66. "Frost Formation and Heat Transfer in Refrigerating Evaporators." 1988 – 1989.

67. "Transient Simulation of Solar-Assisted Heating/Cooling Systems for an Aquatic Center in a Tropical Environment." 1987-1989.

68. "Heat and Mass Transfer in Refrigerating Evaporators under Frosting Conditions." 1987 – 1988.

69. "Design and Application of Linear Induction Motors in Flexible Manufacturing Systems." Illinois Department of Commerce and Community Affairs, 1986 – 1987.

70. "Cost Benefit Analysis and Reduction of Labor and Energy Costs for Controlled Environment Agriculture." Illinois Department of Commerce and Community Affairs/Phytofarms of America, Inc., 1986-1987.

71. "Analysis of Mobile Waste Disposing and Processing Stations." Illinois Department of Commerce and Community Affairs/Solvent Systems International Inc., 1986 – 1987.

GRADUATE STUDENTS SUPERVISED

Ph.D. Students

1. Quach, Kiet Anh (2006). “Frosting and Defrosting of Finned Surfaces under Supersaturated Frosting Conditions.” University of Florida

2. Mahmoud, Ahmad M. (2006). “Analysis and Development of Deployable Heat Pump Units Employing Rotary Vane Expanders.” University of Florida

3. Khan, Jameel Ur Rehman (2005). “Optimization of a Distributed Generation System with the Production of Potable Water and Refrigeration.” University of Florida

4. Venkat, Shankar (2004). “Liquid Hydrogen Storage Onboard Spacecraft under Normal and Reduced Gravity.” University of Florida

5. Kandil, Sherif M. (2004/Co-Chairman). “Analysis and Optimization of a Jet-Pumped Thermally Driven Thermal Management and Power System.” University of Florida

6. Notardonato, William U. (2004). “Thermodynamic Analysis of Cryogenic Liquefaction and Storage of In Situ Produced Propellants for the Human Exploration of Mars.” University of Florida

7. Mago, Pedro Jose (Summer 2003). “Coil Frosting and Defrosting in Industrial Freezers Operating Near Saturated Conditions.” University of Florida

8. Lee, Shun-Fu (Fall 1999). "Thermoeconomics of Lithium Bromide/Water Absorption Chillers and Heat Transformers." University of Florida

9. Al-Mutawa, Nawaf K. (Summer 1997). "Experimental Investigations of Frosting and Defrosting of Evaporator Coils at Freezer Temperatures." University of Florida

10. Zhang, Li (Spring 1993). "Analytical Investigation of Magnetic Refrigeration Systems for Hydrogen Liquefaction." University of Miami

M.S. Students

1. Al-Twairgy, Abed Rabei (2005). “Thermodynamic Analysis and Optimization of Two-Stage Refrigeration Systems.” University of Florida

2. Cheung, Norman (2005-Nonthesis). University of Florida

3. Negroni, Alberto Jose (2005). “Thermoeconomic Optimization of a Steam-Jet Refrigeration System.” University of Florida

4. Mahmoud, Ahmad M. (Spring 2004). “Transient Analysis of Pressure-Induced Transfer of Cryogenic and Gaseous Hydrogen in Storage Systems.” University of Florida

5. Alphonso, Jason Zenon (Fall 2003). “Proof of Concept of the Ion Collider in Refrigeration Systems.” University of Florida

6. Morales, Manuel Jose (Summer 2003). “Optimization of Heat Exchanger Inventory of a Two-Stage Vapor Compression Refrigeration Cycle.” University of Florida

7. Bray, Joseph (Summer 2003/Co-Chairman). “Experimental Investigation of a Constant-Area Two-Phase Flow Ejector.” University of Florida

8. Al-Jaafari, Abdullah M. (Summer 2003). “Comparative Analysis of Vapor Compression and Hybrid Liquid Desiccant Dehumidification Systems.” University of Florida

9. Bhusari, Sanjyot V. (Spring 2003). “Thermodynamic Analysis of Refrigerant Mixtures as R22 Substitutes in Water-Cooled Chiller Applications.” University of Florida

10. Boza, Joseph Jared (Spring 2003/Co-Chairman). “Performance of a Combustion Turbine and Absorption Refrigeration Combined Cycle.” University of Florida

11. Tiedeman, Jason S. (Summer 2000). "First and Second Law Optimization of a Two-Stage Refrigeration System." University of Florida

12. West, Andrew Curtis (Summer 1999). "Optimization of Multistage Vapor Compression Cycles Using Genetic Algorithms." University of Florida

13. Velazquez, Luis G. (Fall 1998). Non-Thesis ME. University of Florida

14. Skygge, Henric (Fall 1997). "Optimization of a Combined Power and Refrigeration Cycle Using Solar Thermal Heat Sources." Joint Supervision with the Swedish Royal Institute (Stockholm). University of Florida

15. Eidensten, Goran (Fall 1997). "A Feasibility Study of a Combined Power and Refrigeration Cycle Using Solar Thermal Heat Sources." Joint Supervision with the Swedish Royal Institute (Stockholm). University of Florida

16. Gupta, Sanjay (Summer 1997). "Thermodynamics of Triple Stage Vapor Compression Refrigeration Systems." University of Florida

17. Vashishta, Nitish (Summer 1997). "Evaluation of the Effects of Subcooling, Intercooling, and Liquid-to-Suction Heat Exchange on the Performance of Vapor Compression Refrigeration Systems." University of Florida

18. Alebrahim, Asad M. (Spring 1997). "Electric Defrosting Analysis of a Finned Tube Evaporator Coil Using the Enthalpy Method." University of Florida

19. Pasumarthi, Naveen (Spring 1995). "Performance Evaluation of Solar Chimneys." University of Florida

20. Davanagere, Badrish S. (Fall 1994/Co-Chairman). "Transient Simulation and Economics of a Solar-Assisted Desiccant Air Conditioning System." University of Florida

21. Iyer, Suresh V. (Summer 1994). "Demonstration and Performance Analysis of a Hybrid Solar Driven Desiccant Air Conditioning System." University of Florida

22. Baker, Dennis Keith (Spring 1994). "Optimizing a District Heating System Using Search Methods." University of Florida

23. Clements, Joseph A. (Fall 1993). "Heat Transfer Performance of a Roof-Spray Cooling System Employing the Transfer Function Method." University of Florida

24. Yurchisin, Todd A. (1992/Non-Thesis). "Expected Performance from an Absorption Liquid Chiller as Part of an Incinerator-Fed District Heating and Cooling System." University of Florida

25. Sengupta, Saibal (Fall 1992). "An Experimental Investigation of Frost Formation and Heat Transfer on Subfreezing Surfaces." University of Miami

26. Gursu, Sezgin (1991). "Analysis of Cryogenic Liquid Hydrogen Storage Systems." University of Miami

27. Syed, Muhammad Tashfeen (1990). "Thermodynamic and Economic Analysis of Hydrogen Liquefiers." University of Miami

28. Raju, Srinivasa P. (1990). "Numerical Predictions of Frost Formation and Heat Transfer in Forced Convection." University of Miami

29. Yazdani, Muhammad Omar (1990). "Experimental and Simulated Performance of a Solar Water Heating System for Residential Applications." University of Miami

30. Alkhamis, Adnan Ibrahim (1989). "Transient Simulation of Solar-Assisted Heating/Cooling Systems for an Aquatic Center in a Tropical Environment." University of Miami

31. Tsiris, George (1988 Non-Thesis). "Desiccant-Integrated HVAC Systems." University of Miami

Supervised Graduate Research

Mago, Pedro Jose (Fall 2001). “Analysis of Ultra-Low Temperature Refrigeration Systems.”

a. Morales, Manuel (Summer 2001). “Design of a Water Chilling/Heating Test Facility.”

b. Bhusari, Sanjyot (Fall 2000). “Studies in Advanced Refrigeration.”

c. Notardonato, William (Summer 2000). “Studies in Advanced Refrigeration Concepts.”

d. Tiedeman, Jason (Fall 1998). "Analysis of Complex Refrigeration Systems."

e. Madabhushi, Srinivasan (Summer 1996). "Analysis of Coil Defrosting Loads at Freezer Temperatures."

f. Pasumarthi, Naveen (Summer 1995). "Heat Transfer and Ice Accretion Analysis of Wing Sections."

g. Kulkarni, Sanjay (Fall 1993). "Thermodynamic Analysis of a Combined Ammonia Absorption/Vapor Compression Refrigeration System."

h. Farooq, Khizar (Summer 1993). "Exergy Analysis of a Combined Vapor Compression/Absorption Refrigeration System."

i. Lordgooei, Mehrdad (1989). "Analysis of Hydrogen Boil-Off Losses."

j.           &nbs