Search results

Analysis of high frequency noise of inverter rotary compressor.

• Author(s) : SUN W., WANG Y., SHEN H., et al.
• Publication date: 2018/07/09
• Languages : English
• Keywords : Software, Noise, Vibration, Inverter, Rotor, Simulation, High frequency, Electromagnetism, Rotary compressor
• Source: 2018 Purdue Conferences. 24^th International Compressor Engineering Conference at Purdue.
• Formats : PDF

Research on low frequency vibration of rotary compressor.

• Author(s) : WEN Z., ZHANG R., ZHANG Y., et al.
• Publication date: 2016/07/11
• Languages : English
• Keywords : Noise, Low frequency, Vibration, Expérimentation, Rotary compressor
• Source: 2016 Purdue Conferences. 23^rd International Compressor Engineering Conference at Purdue.
• Formats : PDF

IIR document

High frequency and high-power density magnetocaloric cooling.

• Author(s) : TOMC U., KLINAR K., PETELIN N., VOZEL K., NOSAN S., PERNE J., KITANOVSKI A.
• Publication date: 2023/08/21
• Languages : English
• Keywords : Magnetic field, Magnetocaloric cooling, Recovery, Energy efficiency, Expérimentation, Frequency
• Source: Proceedings of the 26^th IIR International Congress of Refrigeration: Paris , France, August 21-25, 2023.
• Formats : PDF

Research on low frequency vibration of rotary compressor.

• Author(s) : WEN Z., ZHANG Y., ZHANG R., et al.
• Publication date: 2018/07/09
• Languages : English
• Keywords : Noise, Low frequency, Vibration, Resonance, Testing, Air conditioning, Rotary compressor
• Source: 2018 Purdue Conferences. 24^th International Compressor Engineering Conference at Purdue.
• Formats : PDF

Development of a high-frequency coaxial multi-bypass pulse tube refrigerator below 14 K.

• Author(s) : ZHOU Q., CHEN L., ZHU X., et al.
• Publication date: 2015/04
• Languages : English
• Keywords : Pulse tube, Design, High frequency, Cryocooler
• Source: Cryogenics - vol. 67

IIR document

Frequency correlated heat transfer characteristics of parallel plate active magnetocaloric regenerator.

• Author(s) : YUAN L., YU J., QIAN S.
• Publication date: 2019/12
• Languages : English
• Keywords : Correlation, CFD, Heat transfer, Reynolds, Regenerator, Simulation, Frequency
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 108
• Formats : PDF

Optimization of low frequency noise of compressor based on modal sensitivity analysis.

• Author(s) : XIE L., WANG Y., TIAN L., et al.
• Publication date: 2017/07/20
• Languages : English
• Keywords : Noise, Low frequency, Simulation, Optimization, Air conditioning, Rotary compressor
• Source: 8th international conference on compressors and refrigeration, 2017.
• Formats : PDF

Research on low frequency noise caused by beat vibration of rotary compressor.

• Author(s) : SHEN H., HUANG X., DENG Z., et al.
• Publication date: 2018/07/09
• Languages : English
• Keywords : Pulsation, Noise, Calculation, Vibration, Simulation, Pressure, Frequency, Rotary compressor
• Source: 2018 Purdue Conferences. 24^th International Compressor Engineering Conference at Purdue.
• Formats : PDF

Comparison of the damping properties of different strip steels at different frequencies.

• Author(s) : TOFIQUE M. W., LOF A., MILLWARD C., et al.
• Publication date: 2018/07/09
• Languages : English
• Keywords : Software, Damping, Resonance, Valve (compressor), Expérimentation, Frequency, Steel, Reciprocating compressor
• Source: 2018 Purdue Conferences. 24^th International Compressor Engineering Conference at Purdue.
• Formats : PDF

Study on mechanism and improvement of triple frequency noise of rotary compressor.

• Author(s) : TAN S., ZHU B., WU J., et al.
• Publication date: 2018/07/09
• Languages : English
• Keywords : Suction, Noise, Air conditioner, Vibration, Discharge, Optimization, Testing, Frequency, Rotary compressor
• Source: 2018 Purdue Conferences. 24^th International Compressor Engineering Conference at Purdue.
• Formats : PDF

IIR document

Research and development of a permanent-magnet synchronous frequency-convertible centrifugal compressor.

• Author(s) : LIU H., ZHANG Z., LI H., WANG S., HU B., WANG R. Z.
• Publication date: 2020/09
• Languages : English
• Keywords : Compressor, Magnet, Permanent magnet, Centrifugal compressor, Frequency, Efficiency, Design, Expérimentation, Chiller
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 117
• Formats : PDF

Research on frequency conversion technology of metro station's ventilation and air-conditioning system.

• Author(s) : YANG Z., YU Z., YU L., et al.
• Publication date: 2014/08
• Languages : English
• Keywords : CFD, Metro, Ventilation, Energy saving, Retrofitting, Frequency, Air conditioning
• Source: Applied Thermal Engineering - vol. 69 - n. 1-2

IIR document

Applying variable frequency drives to air units in industrial refrigeration systems.

• Author(s) : REINDL D., JEKEL T. B., DAVIS J.
• Publication date: 2015/08/16
• Languages : English
• Keywords : Refrigerating system, Industrial application, Variable speed, Fan, Air, Energy efficiency, Control (generic), Frequency
• Source: Proceedings of the 24th IIR International Congress of Refrigeration: Yokohama, Japan, August 16-22, 2015.
• Formats : PDF

IIR document

Development and validation of variable frequency transcritical CO2 heat pump systems.

• Author(s) : QI H. M., CHEN Q., WEI J., et al.
• Publication date: 2014/08/02
• Languages : English
• Keywords : R744, Heat pump, Performance, Expérimentation, Ejector, Transcritical cycle, Frequency, Heat exchanger, CO2
• Source: 11^th IIR Gustav Lorentzen Conference on Natural Refrigerants (GL2014). Proceedings. Hangzhou, China, August 31-September 2, 2014.
• Formats : PDF

IIR document

Performance investigation of a linear compressor in refrigeration system with its natural frequency realtime monitored.

• Author(s) : TANG M., ZOU H., XU H., et al.
• Publication date: 2015/08/16
• Languages : English
• Keywords : Refrigerating system, Linear compressor, Compression system, Performance, Testing, COP, Frequency, Compressor
• Source: Proceedings of the 24th IIR International Congress of Refrigeration: Yokohama, Japan, August 16-22, 2015.
• Formats : PDF

Radio frequency technology makes warehouses more efficient and safer

Industrial Conveying has developed new technology for high-rise warehouses. Each crane communicates with every stationary object on its racks. The High Bay Stacker is managed by Radio Frequency (RF) and makes it possible to use very high spaces....

• Publication date : 2011/07/01

High-efficiency inverter scroll compressors

Summary of an interesting paper from the 2016 Purdue Conference on compressors.

• Publication date : 2017/03/08

Are hydrocarbons in room air conditioners risky?

A team from GIZ Proklima used quantitative risk assessment tools to estimate the severity and frequency of ignition HC-600a (iso-butane) and HC-290 split air conditioners and domestic refrigerators.

• Publication date : 2015/02/12

Benefits of closed display cabinets for food preservation

A recent article in the IJR shows that in comparison to an open display cabinet, a closed display cabinet achieves lower product temperature and better temperature homogeneity, even with a high door-opening frequency.

• Publication date : 2019/08/29

Briefs: Open units or with glass doors?

When glass doors are used in refrigeration units, the energy savings are as a rule indicated as being "up to" 40%. Very often these figures are based on experience in a typical climate (25°C and 60% air humidity) with standard opening frequencies...

• Publication date : 2009/05/18

Noise reduction strategies for screw compressors

The operating noise of twin-screw compressors is an important issue that may limit their scope of application. Two recent IJR papers suggest several noise reduction methods and analyse their...

• Publication date : 2021/05/31

Ultracold polar molecules

Scientists at JILA, a joint institute of the National Institute of Standards and Technology (NIST) and the University of Colorado at Boulder (CU-Boulder), have applied their expertise in ultracold atoms and lasers to produce the first high-density...

• Publication date : 2008/10/22

India’s largest HVAC project

ETA Engineering is to install the HVAC system in Terminal 3 in Dehli International Airport, at a price of around 100 million USD. Due to be completed in September 2009 and to be handed over in March 2010, the 450 000 m² facility will be cooled by...

• Publication date : 2008/10/14

Oil-free chillers

At the beginning of 2005, Climavenata will launch its new range of liquid chillers: the "Turbo Efficiency Climaveneta System" (Tecs), which is an oil-free chiller. The range is fitted with Danfoss-Turbocor R-134a centrifugal compressors :...

• Publication date : 2005/02/10

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

The future: 330 microns square

Radio frequency identification (RFID) is set to play a growing role in refrigerated logistics operations. RFID is advanced technology designed to replace traditional barcode technology and the Metro Germany Group is already Europe's forerunner,...

• Publication date : 2005/07/19

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

Compressors: Oil-free linear compressor

Linear technology could become the predominant energy-efficient refrigeration compressor design, according to Brazilian manufacturer Embraco which unveiled a domestic compressor offering linear technology with variable capacity, eliminating the...

• Publication date : 2011/02/11

Metro is extending RFID to cases and cartons

German retailer Metro is planning to start applying radio frequency identification (RFID) tags, with improved performance and capability, to cartons and cases in the fourth quarter of 2005. Metro and its industry partners, including Kraft Foods,...

• Publication date : 2005/06/14

RFID applications

The use of RFID (Radio Frequency Identification) along the food chain is predicted to rise to € 4.3 billion by 2017. Here are some examples of RFID applications: - Metro, the world's fourth-largest retailer, is implementing RFID technology...

• Publication date : 2008/02/12

News from IIR members: Danfoss

Danfoss won the 2009 AHR Exposition Refrigeration Innovation Award. The honoured product is a newly developed energy-saving variable frequency drive for compressors, pumps, and fans. In refrigeration applications, the AKD 102 constantly matches...

• Publication date : 2009/05/18

Conference update: Ohrid

The 3rd IIR event in a series, Ammonia Refrigeration Technology was held on May 7-9, 2009, in Ohrid, Macedonia. With 95 participants from 24 countries and 32 papers presented, the event was very successful. A key focus of this series of...

• Publication date : 2009/05/27

New IIR Informatory Note: “Whole Body Cryotherapy/Cryostimulation”

Learn about the latest advances and the challenges related to these rapidly developing techniques.

• Publication date : 2020/10/22

New IIR Informatory Note on Air-source heat pumps for space heating and cooling

The IIR has issued a new Informatory Note on Air source heat pumps for space heating and cooling. A summary for policymakers and a Chinese version of this note have also been published.

• Publication date : 2021/02/23

Member news: Mirai Intex releases new high capacity ultra-low temperature refrigeration system

Mirai Intex, corporate member of the IIR, has released a new ultra-low temperature (ULT) system based on air-cycle technology, offering high cooling capacity.

• Publication date : 2021/03/09
• Subjects: Technology, HFCs alternatives

News from IIR members: Danfoss

Danfoss was chosen by Sainsbury’s and Netto to facilitate the conversion of their stores to CO2 as part of their ambition to drastically reduce greenhouse gas (GHG) emissions. Danfoss has 10 years’ experience in the...

• Publication date : 2011/08/04

IIR member news: Embraco

Embraco, IIR Corporate Member, announced the launch of a new oil-less linear compressor design for domestic refrigeration.

• Publication date : 2014/04/27

IIR member news: Cemafroid, IRSTEA and AFCE

A new study on the containment of refrigerants has been launched with the aim of identifying and promoting best practices in this regard.

• Publication date : 2015/10/07