The HVACR Training Authority™

Home Journal Krakow, MO, Busy Beer Cooler and Freezer Get Upgrades

Krakow, MO, Busy Beer Cooler and Freezer Get Upgrades

The hub of Krakow, MO, for decades, Krakow Store is a convenience store, restaurant, deli and gas station all wrapped in one. “Busy” doesn’t begin to describe the amount of traffic the store experiences on a daily basis.

One of the hardest working pieces of equipment is the store’s walk-in beer cooler. The cooler is set to 35°F, and is restocked with an average of 300 cases of beer per week. In addition to steady foot traffic in and out of the cooler, the new inventory coming into the cooler is generally 47°F, adding significant heat load to the refrigerated space.

Using KE2 Therm’s ROI Calculator, the estimated payback of retrofitting the case with a KE2 Evaporator Efficiency controller was a quick 1.74 years. Owner Greg Maune agreed to the project, commenting, “We were financially motivated to install the controller, and the kickback from Ameren [Missouri, a local utility] made it a no-brainer.”

In addition to the cooler install, the Krakow Store freezer also was fitted with a KE2 Evap controller. While not subjected to the heavy traffic of the beer cooler, the freezer was nonetheless working hard. The equipment was relatively new and showing no obvious signs of trouble, however once the KE2 Evap was installed on the freezer the controller’s data logging capability revealed several system issues.

The system data made it apparent that the compressor was running almost continually, head pressure was too high and the superheat needed to be adjusted to feed more refrigerant to the evaporator.

With the KE2 Evap installed and the system issues corrected, the compressor is running 53% less than before, and the freezer is experiencing two defrosts every five days, compared to the previous time clock setting of 15 defrosts every five days—an 87% reduction. Energy savings for the freezer is 52.1%.

The results were even more gratifying than expected. The walk-in cooler experienced a 74% reduction in defrosts, resulting in 19.2% energy savings, for a payback of 1.6 years before the rebate, and a remarkable 1.05 years after the rebate.

The walk-in freezer saw a 52.1% reduction in energy consumption, for a payback of .94 years before the rebate, and 0.6 years after the rebate.

For more information, visit

RSES is the leading education, training and certification preparation organization for HVACR professionals. RSES publishes various comprehensive industry training and reference materials in addition to delivering superior educational programs designed to benefit HVACR professionals at every stage of their careers through instructor-led training courses, online training for HVAC, educational seminars, interactive CD and DVD products, industry-related reference manuals, and helpful technical content through Service Application Manual chapters, the RSES Journal, the RSES Journal archives and feature articles, as well as web-exclusive features.

Beginning with basic theory and extending to complex troubleshooting, training courses covering refrigeration and air conditioning, heating, electricity, controls, heat pumps and safety may be conducted in a classroom environment or though self study. RSES publications may be purchased by schools, contractors, manufacturers or any other industry group wanting to conduct comprehensive training programs. Seminars covering air conditioning troubleshooting, electrical troubleshooting, compressor training, condenser training, refrigerant piping practices, DDC controls, and more are held in various cities across North America.

Select training programs offer Continuing Education Units (CEUs) and NATE Continuing Education Hours (CEHs).

In addition, RSES offers industry certification preparation materials for refrigerant handling (EPA Section 608), R-410A and North American Technician Excellence (NATE) examinations.

RSES’ monthly magazine, RSES Journal, serves HVAC contractors, service technicians, students, operations/maintenance managers, engineers and technicians who work in the residential, light commercial, commercial and institutional markets on air conditioning, warm-air heating, refrigeration, ventilation, electrical, ice machines, chillers, hydronic heating, piping, refrigeration control and energy management, building automation, indoor air quality and duct cleaning, and sheet metal fabrication equipment and/or systems.
©2011 RSES. All Rights Reserved.