Refrigeration

transcritical co2 refrigeration

Efficient Transcritical CO2 Refrigeration During Warm Months

Efficient Transcritical CO2 Refrigeration During Warm Months

Bryan Kilgore, ERS, for Zondits DeCicco & Sons, a New York grocery store chain, installed a transcritical CO2 refrigeration system at their store in Larchmont, NY. They recently compared the energy consumption at their Larchmont store to their similarly sized store in Ardsley, NY, that has a comparable refrigeration load, but with an R-404A refrigeration system. They

refrigerant Paris Agreement

A Brief History of CO2 as a Refrigerant

Bryan Kilgore, ERS, for Zondits Using CO2, or R-744, as a refrigerant is not a new concept, but it has not had widespread commercial use since the 1930s. The use of CO2 as a refrigerant was replaced in 1930 with a new synthetic refrigerant, developed by DuPont and General Motors, known as Freon. Freon is

Ask the Expert compressed air dryers CO2 refrigeration

Ask the Expert: Is a CO2 Refrigeration System a Good Option?

Question: When is a CO2 Refrigeration System a Good Option for a Supermarket/Convenience Store? Bryan Kilgore, ERS, for Zondits The cost margins for retail food stores are razor thin, so when does upgrading or replacing an old refrigeration system with a new CO2 system make sense? Will the system be efficient, reliable, safe, and cost-effective? Answer:

utility demand response

Supermarkets Can Obtain New Revenue with Utility Demand Response Programs

Demand Response and Smart-grid Technologies in Supermarkets ACHR News, March 13, 2017 Supermarkets typically operate with razor-thin margins, which means fresh ideas that improve profits, such as participating in utility demand response or peak-shaving programs or selling thermal energy to local district heating and cooling grids to produce a revenue stream, are always welcome. Today,

MRBRAZ ammonia chiller

Major U.S. Retailer using Low-Charge Ammonia Chillers for Air-conditioning

Major U.S. retailer using MRBRAZ ammonia chillers for AC Ammonia 21, March 15, 2017 MRBRAZ & ASSOCIATES, an engineering design firm based in Azle, Texas, has designed and installed low-charge DX ammonia chillers that provide air conditioning in office space at about 10 warehouse locations run by a major U.S. retailer, including four in the

cascade co2

Panasonic Debuts New Cascade CO2 System for Supermarkets

Bryan Kilgore, ERS, for Zondits Panasonic has released a new 30-horsepower CO2 refrigeration system that they created by linking their 20 hp and 10 hp CO2 systems already in production. This hybrid/cascade system is intended to meet the capacity needs of supermarkets, where their two smaller systems are popular with convenience stores. In Japan the size of

natural refrigerant

Natural Refrigerant Solutions are Booming in Japan

Bryan Kilgore, ERS, for Zondits Natural refrigerant solutions are booming in Japan. The number of transcritical CO2 systems installed in convenience stores and supermarkets has grown to over 2,400 installations – up from 190 in 2014. Japanese companies such as Panasonic, Sanden, and Mitsubishi Heavy Industries have developed and installed CO2 systems with outdoor condensing

Viking thermal energy storage system

Study Verifies Savings for Viking Cold Thermal Energy Storage System

Viking Thermal Energy Storage System Demonstrates Savings in Study ACHR News, December 5, 2017 Viking Cold Solutions, a supplier of thermal energy storage systems, announced that a Southern California utility, along with an independent third party energy management firm, ASWB Engineering, completed a field demonstration study of the Viking Cold thermal energy storage (TES) system.

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