Refrigeration And Air Conditioning By Stoecker
Arleen Jerdee
Blurb: The definitive, classic text for any level course on refrigeration, refrigeration and air conditioning, and environmental control in buildings. It is an equipment-oriented textbook that applies theoretical results of engineering theories to refrigeration and air conditioning engineering problems. This enables the student to understand both common and uncommon problems in designing, selecting and applying air conditioning and refrigeration components and systems. The material has been updated to apply to the new Environmental Protection Agency requirements and to the new technology developed in response to the energy crisis. New to this edition is a discussion of solar energy; coverage of the basic principles of acoustics and noise control (in relation to air conditioning systems), fans and ducts, pumps and piping, and air conditioning units.
Psychrometry; Heating- and cooling-load calculations; Air-conditioning systems; Fan and duct systems; Pumps and pumping; Cooling and dehumidifying coils; Air-conditioning controls; Vapour-compression cycles; Compressors; Condensers and evaporators; Expansion devices; Vapour-compression-system analysis; Refrigerants; Multipressure systems; Absorption refrigeration; Heat pumps; Cooling towers and evaporative condensers.
At the end of the course, the student should be able to differentiate between different types of refrigeration systems with respect to application as well as conventional and unconventional refrigeration systems. Thermodynamically analyse refrigeration and air conditioning systems and evaluate performance parameters. Apply the principles of Psychometrics to design the air conditioning loads for the industrial applications.
This study presents the exergetic
investigation of an automotive air conditioning (AAC) system with the
refrigerant R1234yf experimentally. The air-conditioning system is based on the
conventional mechanical compression refrigeration cycle. An internal heat
exchanger (IHX) has been added to the system in order to provide performance
enhancement. The influence of the IHX investigated at different compressor
speeds and air stream temperatures. Experimental measurements were collected by
using a data-acquisition system, and the results were obtained by performing
exergetic analysis. The exergy destruction, exergy efficiency and the total
exergy destruction per cooling capacity were calculated. The analysis results
were compared with a baseline system which operates with the refrigerant R134a.
Furthermore, an empirical correlation was proposed for the determination of the
total exergy destruction per cooling capacity for various compressor speeds for
evaluating the system performance without doing further experiments. As a
result, the exergetic efficiency of the system was improved by introducing IHX
to the system. Moreover, it was observed that the temperature rise in the air stream
decreased the exergy efficiency and increased the total exergy destruction per
cooling capacity.