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Home » Keywords: » refrigeration zone

Items Tagged with 'refrigeration zone'

ARTICLES

Figure 1: A system refrigerant undercharge caused these two parallel evaporators to freeze.

The Professor: More Troubleshooting Tips for Spring Tuneups

Properly diagnosing the symptoms is what sets professional technicians apart
Headshot-Tomczyk-John.jpg
John Tomczyk
April 11, 2016
No Comments

Diagnosing an air conditioning system isn’t easy. A service technician must be a trained professional to diagnose a system efficiently and correctly — no longer can a tech rely on rules of thumb for coil temperatures or pressures. 


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Joe Marchese

Ice Breaker: The Value of Remembering the Basic Cycle

Systems will provide clues to their performance — techs just have to look for them
Joe Marchese
April 11, 2016
No Comments

The next time you’re faced with a choice of whether you should take some extra time and additional measurements, do the right thing. Take the time to do it right and find the true problem the first time.


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An Azane low-charge air-cooled ammonia chiller.

A Close-up Look at Industrial Refrigeration

Uncovering products from the IIAR 2016 Industrial Conference and Exhibition’s show floor
Ron Rajecki author page
Ron Rajecki
April 11, 2016
No Comments

A total of 148 exhibitors showed off their latest advances in all types of industrial refrigeration at the International Institute of Ammonia Refrigeration (IIAR) 2016 Industrial Refrigeration Conference and Exhibition in Orlando, Florida. Here are a few of the highlights.


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John Tomczyk

The Professor: The Importance of a Refrigeration System’s Operating Pressures

Calculating and analyzing compression ratios can aid system troubleshooting
Headshot-Tomczyk-John.jpg
John Tomczyk
January 11, 2016
No Comments

A refrigeration system’s compression or pressure ratio is defined as the absolute discharge pressure divided by the absolute suction pressure. Calculating this ratio can be a big help when it comes to troubleshooting a system.


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Figure 1

Profit-driven Maintenance Provides Value to Supermarket Clients

Create a profit-driven, not problem-driven, culture
Ron Rajecki author page
Ron Rajecki
January 11, 2016
No Comments

Refrigeration contractors are keenly aware of the value of the maintenance they perform for their grocery store and supermarket clients, but, in some cases, they may find themselves working with clients who underestimate it.


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Operators of facilities that use ammonia refrigeration equipment must write and enforce standard operating procedures, buy the proper personal protective equipment (PPE), and practice what they preach with regard to safety

Breathe Easy With a Good Ammonia Safety Program

Prevention, mitigation, and preparation can save lives
Ron Rajecki author page
Ron Rajecki
November 2, 2015
No Comments

Operators of facilities that use ammonia refrigeration equipment must write and enforce standard operating procedures, buy the proper personal protective equipment (PPE), and practice what they preach with regard to safety — not only from top to bottom in their own organizations, but also with visitors, contractors, and other industry stakeholders.


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Raise a Glass to Beer-dispensing Equipment

Ice Breaker: Raise a Glass to Beer-dispensing Equipment

Understanding the workings behind one of refrigeration’s most important applications
Joe Marchese
August 31, 2015
No Comments

The next time you enjoy a cold draft beer, just think about the technology that went into it. It’s likely you’ll be the only person in the entire bar who appreciates it.


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Mark Menzer

Refrigerants Take the Global Stage

An international HFC phasedown is coming — and it will have industry-wide effects
Mark Menzer
Mark Menzer
August 31, 2015
No Comments

It’s looking more likely that there will be a global agreement to phase down HFCs, and it could come as early as this year or possibly next; either way, it’s coming. 


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FIGURE 1: An evaporator in a walk-in cooler has frost blocking much of the airflow from entering the coil.

The Professor: Foiling Frosted Evaporator Coils

Reduced airflow over the coil can cause a multitude of woes
Headshot-Tomczyk-John.jpg
John Tomczyk
August 3, 2015
No Comments

Technicians should make a list of the causes that could be blamed for this failure and, once the system is up and running, eliminate them, one by one. 


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Joe Marchese

Ice Breaker: Don’t Jump to Use Jumpers

These simple tools can be dangerous if used improperly
Joe Marchese
August 3, 2015
One Comment

The old saying, “When in doubt, jump it out,” is not really a wise practice to follow.


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More Articles Tagged with 'refrigeration zone'
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