Refrigeration sector monitoring

A low charge direct expansion evaporator system configured to use less ammonia

A US-based meat processor operates a cold storage facility that uses just 1 kg approx ammonia per kW.

• Publication date : 2018/05/17

Use of ejectors for performance improvement in CO2 commercial refrigeration systems

Expansion work recovery by means of a two-phase ejector is an attractive option for improving the efficiency of CO2 commercial refrigeration systems. Transcritical CO2 systems have relatively large throttling loss, meaning that they offer the...

• Publication date : 2016/05/13

World's smallest electronic expansion valve

Danfoss recently presented a small electronic expansion valve, especially used for air conditioners with variable refrigerant flow.

• Publication date : 2020/07/01

Briefs: First MAC system using an ejector

Denso Corporation has developed the world's first passenger mobile air-conditioning system that uses ejector technology. The ejector, which is a small refrigerant injector, was installed on the new Prius introduced by Toyota in May 2009. According...

• Publication date : 2009/08/13

China: expanding electronic expansion valve market

Electronic expansion valves are mainly used in inverter air conditioners to automatically adjust refrigerant flow to achieve better energy-saving performance. This technology is one of the 30 key energy-saving technologies promoted by the Chinese...

• Publication date : 2011/06/08

CO2 heat pump with variable-displacement compressor/expander in the pipeline

This CO2 heat pump will use oil-free variable-load compressor and variable expander technology, currently tested at Purdue University’s Herrick Laboratories.

• Publication date : 2014/01/09

French supermarkets turn to ice slurries

- Carrefour 's Collégien, France, hypermarket is using indirect refrigeration for over 6100 m 2 out of a total 15 000 m 2 surface area: CO 2 (in a 4-loop system) for temperatures below 0°C (refrigerating capacity: 232 kW) and ice slurries...

• Publication date : 2005/02/11

CO2 applications: First commercial CO2 system in Latin America

Last April Verdemar supermarket chain inaugurated its fifth store in the suburb of Jardim Canada, Nova Lima -Minas Gerais, Brazil. It is the first Latin American supermarket that uses carbon dioxide as a refrigerant. Its Skyrack Breeze, developed...

• Publication date : 2011/02/07

2005 AHR Expo Innovation award winners

The winners of the third annual AHR (Air Conditioning, Heating and Refrigeration) Expo Innovation awards will be honoured during a ceremony during the 2005 AHR Expo in Orlando, Florida, on February 8, 2005. The product entries were judged for...

• Publication date : 2004/12/22

Compressors: key trends

Over the past few years, the design and performance of rotary, reciprocating positive displacement and dynamic compressors have been greatly improved. CO2 compressors have conquered new niches and twin-screw compressors are now increasingly used...

• Publication date : 2005/10/26

Intense competition for the next-generation MAC refrigerant

Less than 3 years before the January 1, 2011 deadline for using fluorinated gases (F-gases) with a GWP higher than 150 in the new models of cars according to the European Directive 2006/40 on emissions from mobile air-conditioning (MAC) systems,...

• Publication date : 2008/05/13

ICR2019: overview of current refrigeration research topics (part III)

Energy storage, desiccant air conditioning, high-temperature heat pumps and ejector technologies were some of the salient topics of the latest IIR Congress. Continuation of the synthesis of key presentations of ICR2019.

• Publication date : 2019/10/30

2004 Climate Protection Award

Since 1998, the Climate Protection Award is awarded by the US Environmental Protection Agency in recognition of achievements in protecting the Earth's climate. On April 13, 2004, this award was presented to 12 international individuals and...

• Publication date : 2004/05/25

CO2 supermarkets: Tesco

Designed as Tesco's first zero-carbon store, the new store at Ramsey, Cambridgeshire, UK, is completely HFC-free. The supermarket is hence using natural refrigerants CO2 and hydrocarbons throughout its refrigerators, freezers, heating, ventilation...

• Publication date : 2010/05/27

Briefs: US supermarkets: CO2 gains ground

Being already largely used in Europe, CO2 refrigeration systems might see important development in North American supermarkets. The medium-size retail chain Price Chopper Supermarkets has installed a cascade system using CO2 in the low-temperature...

• Publication date : 2008/08/12

Frozen foods take off in China

Total sales of frozen foods in China soared to USD 14 billion in 2008, up 140% over 2002. Tonnage reached about 4.615 million, or 3.47 kilograms per capita, up 70% according to Research & Markets. Frozen potato products were the fastest...

• Publication date : 2009/08/13

Magnetic-bearing centrifugal compressors

This new compressor technology - presented at the 2003 AHR Expo in Chicago - may have a significant effect on the future of mid-range chillers and rooftop applications in water-cooled, evaporatively cooled and air-cooled chilled-water and...

• Publication date : 2004/07/27

Integrated CO2-CHP system

Brunel - a UK University - and 14 industrial partners in the commercial refrigeration sector have presented an innovative integrated energy system which has been designed to meet the needs of medium and large supermarkets and can be tailored to...

• Publication date : 2011/02/11

Chillers: efficiency takes off

Chillers are key refrigerating systems since, according to the Department of Energy, in the US, they account for about 13% of the power consumed by the nation's buildings and 9% of the overall demand for electric power. Examples below illustrate...

• Publication date : 2008/10/25

ICR2011 highlights: micro-refrigeration development

Micro-refrigeration development was one of the important themes of the IIR Congress in Prague.

• Publication date : 2011/12/15

Two-phase ejectors: a high potential for energy savings

Two review papers recently published in the IJR highlight ejectors as a promising solution to dramatically improve the efficiency of vapour compression refrigeration systems and outline the challenges that...

• Publication date : 2020/11/27

Single-fuel LNG ferries with waste heat recovery systems

A Dutch ferry operator has recently commissioned two new ships with single-fuel LNG engines. The ships are also equipped with a waste heat recovery system to generate electricity.

• Publication date : 2021/03/18
• Subjects: Technology, General information

Latin America industrial refrigeration equipment market

Latin America industrial refrigeration equipment market was valued at USD 431.8 million in 2012 and is forecast to grow at a Compound Annal Growth Rate (CAGR) of 6.5% from 2013 to 2019.

• Publication date : 2014/08/04
• Subjects: Figures, economy

Honeywell tests new R404A replacement

Honeywell has been testing a new low-GWP refrigerant as a potential replacement for R404A in hermetically-sealed refrigeration systems

• Publication date : 2014/09/24

Ohrid 2019: latest technology trends for ammonia and CO2

Synthesis of several refrigerating installation case studies using ammonia and CO2 based on papers from the recent IIR conference in Ohrid.

• Publication date : 2019/05/29