P-9: Mechanical Refrigeration
P-9: Mechanical Refrigeration
MECHANICAL REFRIGERATION includes a description of refrigeration systems, the theory of refrigeration, and procedures to operate and troubleshoot refrigeration systems. It has 48 pages with 30 photographs, drawings, and examples.
Covered Subjects:
Flow diagram of typical refrigeration systems
description of each major item of equipment in the system.
The principles of refrigeration: heat of vaporization, vapor pressure, pressure reduction and vaporization, heat transfer in the chiller, and compressor power.
Vapor pressure graphs of propane refrigerant
Graphs are shown for determining the vaporization and temperature drop in expansion valves.
Operation and control of refrigeration systems including startup and shut down
Troubleshooting common operating problems are covered.
Both Metric and USCS (English) units of measurement are used so students can work in units with which they are familiar.
Questions and problems are included throughout the manuals with answers in the back that allow students to check their understanding of the subject.
Comprehensive knowledge assessment tests are included at the end of each section.
The P-9 Knowledge Validation Test provides the answers to both USCS and SI unit validation test questions in the manuals for self-grading or for supervisor to grade test of employees. Also included scoring information. Test answers in pdf format will be emailed.
Alternatively, PLP will review and score completed test. Contact PLP for pricing.
An experienced PLP instructor can travel to your site to lead a classroom training program. Contact PLP for more information.