JARN News
CONTRIBUTIONS: 5.1 SPAIN
Reported by Asociacion de Fabricantes de Eq強調uipos de Climatizacion (AFEC) In 2017, the Spanish economy continued to expand. The country’s gross domestic product (GDP) increased by 3.1% compa...
Advancement of Heat Exchangers for Chillers
Evaporators for centrifugal chillers have traditionally been of a flooded type. A flooded evaporator as shown in Fig. 4 is designed to introduce a liquid refrigerant from the bottom of the evaporator ...
Advancement in Heat Pumps and Heat Recovery Systems
Demand for heat pumps as an alternative to fuel-burning heating systems is growing, driven by environmental concerns regarding CO2 gas emissions. Heat pumps using chiller units are classified as air-s...
Expanding Capacities of Positive-Displacement Compressors
There is a trend involving the use of large scroll and rotary compressors with high-pressure refrigerants such as R410A for large air-cooled chillers and air-source heat pumps, which makes it possible to use more compact heat exchangers and piping systems. In the Japanese market, the capacity of rotary compressors that are mainly used for residential air conditioners is being raised t...
Widespread Oil-free Technologies
Since the advent of a small directdrive oil-free centrifugal compressor in the early 2000s, many leading heating, ventilation, and air conditioning (HVAC) manufacturers have developed and commercializ...
Water-cooled and Air-cooled Chiller Trends
Chillers are largely classified as water-cooled chillers rejecting heat from a cooling tower through cooling water and air-cooled chillers directly rejecting heat through condenser coils with fa...
Product and Technology Trends: Central AC Systems – Variable
The hydraulic/chilled water system of central air conditioning systems is used to provide cooling and heating to multiple locations in buildings by using water as a heat transfer medium. As shown in F...
3.10 AUSTRALIA
The Australian government has announced that the country has seen 2.5% GDP growth in 2017. The residential sector and the service industry drove economic growth, and employment has also improved. ...
3.9 LATIN AMERICA
On August 3, 2018, CEPAL released the 2017 Latin America and Caribbean Area Economic Report. According to the report, in a context of slow economic recovery in the world, the Latin America and Caribbe...
3.8 MIDDLE EAST
Impacted by political chaos in the Middle East, economic recession is occurring in the region. Demand for large chillers is shrinking dramatically. Demand for medium- and smallsized chillers such as a...
