Technical Note


The Global R32 AC Market – 2017 Overview

Since ‘The Latest Trends of the Global R32 AC Market’ was published in JARN October and November 2016 issues, the global air conditioner market has been shifted to R32 refrigerant to a con...


Screw & Centrifugal Compressors

Historical Backgrounds of Large Refrigeration Compressors   There are currently two types of large refrigeration compressors, centrifugal and screw compressors. Dr. Willis H. Carrier developed ...


Genera 2018 Technical Conferences to Analyze Transition to a

Organized by IFEMA, Genera Energy and Environment International Trade Fair will take place at Feria de Madrid in Spain, from June 13 to 15, 2018.   The Technical Conferences program at Genera w...


UNIDO & JRECO Sign a Cool Partnership to Combat Global Warmi

The United Nations Industrial Development Organization (UNIDO) and the Japan Refrigerants and Environment Conservation Organization (JRECO) have agreed to join forces in an effort to combat global war...


Technical Trends of Rotary Compressors

— Continued from March Issue   Contributed by Masataka Yamane, HVACR advisor Multiple Compressor Types   Two-piston   Rotary compressors take in, compress, and discharge ...


EUREKA 2017: A Unique Cross-generational Debate about the Fu

On December 11 and 12, 2017, the European Partnership for Energy and the Environment (EPEE) and the European Ventilation Industry Association (EVIA) jointly organized in Berlin the two-day conference ...


New Year’s Resolutions from Global Association Leaders--JSRA

Noboru Kagawa, president of the Japanese Society of Refrigerating and Air Conditioning Engineers (JSRAE, Japan) We wish you a happy New Year! On the occasion of welcoming the New Year, I’...


New Year’s Resolutions from Global Association Leaders--JRAI

Shoji Tsubokuta, chairman of the Japan Refrigeration and Air Conditioning Industry Association (JRAIA, Japan) On behalf of JRAIA member companies, I would like to celebrate the 50th anniversary...


New Year’s Resolutions from Global Association Leaders--ISKI

Taner Yonet, chairman, board of directors, ?klimlendirme So?utma ve Klima ?malatc?lar? Derne?i (?SK?D, Turkey) As ?SK?D celebrated its 25th anniversary in 2017, this was an important year durin...


New Year’s Resolutions from Global Association Leaders--IIR

Didier Coulomb, director general of International Institute of Refrigeration (IIR) The IIR is the only independent intergovernmental organization with the mission of providing information on al...


New Year’s Resolutions from Global Association Leaders--HRAI

Warren Heely, president of the Heating, Refrigeration and Air Conditioning Institute of Canada (HRAI, Canada) HRAI wishes all JARN readers a happy, healthy, and prosperous New Year. The ...