Cool Concepts newsletter archives
These periodic articles will help you to gain a better understanding of your
refrigeration systems. They are in PDF format. The articles may be downloaded
using free PDF reader software.
Draining Evaporative
Condensers - An Alternative Approach (233kB)
In this issue we look at an alternate approach to draining evaporative condensers in industrial refrigeration systems. The common principles of a steam heating system are compared to similar requirements for an ammonia refrigeration system.
Ammonia Thermosiphon (350KB) - October 2007
From this comparison of similarities we find the oil cooling method and gravity flooded method both operate on the thermosiphon principle.
What Is Industrial Refrigeration? (333KB) - September 2007
The one thing to remember about refrigerants is that the “basics” apply to them all. Subcooling, superheat, expansion processes, and compression. These principles do not change with various refrigerants.
Refrigeration System Operating Issues (244KB) - July 2007
… components are selected and applied to the refrigeration system to meet a desired function. If the refrigeration system is not designed to account for the full performance range of the equipment, operating issues can develop.
Industrial Refrigeration Energy Conservation (206KB) - June 2007
As the weather conditions or heat rejection requirements change, the discharge pressure is allowed to operate through a range of pressures.
Energy Savings - The Big Secret (271KB) - April 2007
Some of these concerns are related to the actual refrigeration system operation and use. Others are concerned with energy costs and the frustration of trying to determine the actual charges you are responsible for.
Regulations – A necessary requirement? (246KB) - March 2007
One thing which compounds the regulations is that no two refrigeration systems are alike. Each has its own “personality.” What works for one system may not work for another system. Each one is a custom entity.
System Efficiency and Benchmarking (250KB) - February 2007
How do we supply the answers when management wants to know the tangible benefits provided by their investment in energy savings?
Piping & Instrumentation Drawings (P&ID’s) (254KB) - January 2007
P&ID’s in general should communicate the entire scope of the refrigeration system. A first consideration is to fully provide a visual association of all components, i.e., compressors, vessels, heat exchangers, valves (hand and control), and piping and instruments.
