Smart Aircon

JAPAN : Daikin has developed a new refrigerant blend, which the Japanese company says is a more efficient alternative to R1234yf in electric vehicle HVAC systems. The new development gas, D1V140, is designed to reduce the energy draw of the heating and cooling systems in electric vehicles and thus improve the vehicles’ range.  Unlike conventional internal combustion engined vehicles, in winter electric vehicles cannot use the engine waste heat for heating the interior and must draw the power from the battery. Previous research has shown that the capacity of a R1234yf vehicle heat pump system reduces by up to 40% when the ambient temperature drops from 0℃ to -10℃. This is recognised as a significant problem in colder climates by motor manufacturers. The new Daikin refrigerant blends R1234yf with 23% of a new hydrofluoro-olefin refrigerant HFO1132(E). Not very much is known of HFO1132(E) but it is thought to possess a GWP of 3. Daikin maintains it is less than 1. Initial ...

  Third-generation VZH scrolls bring further seasonal efficiency gains Danfoss Inverter Scrolls VZH range from 4 to 26TR Danfoss has boosted the part load performance and the operating map of its leading VZH variable speed scroll compressor range. The third-generation commercial inverter scrolls retain the strengths of the previous version, with the addition of the Intermediate Discharge Valve (IDV) technology for enhanced seasonal efficiency, and a wider operating map. The products are particularly suitable for comfort reversible applications and computer room air conditioning (CRAC) units.   Matthieu Stoll, Global Marketing Director A/C, Danfoss Cooling said: “The introduction of IDVs in the large models means that there’s no longer a need for high- and low-pressure compressor optimization – potentially halving inventory management requirements. And the wider operating map brings huge value for strategic applications. We can accelerate the changeover from older Danfoss ...

How to Improve Your Air Conditioner’s Efficiency? Good heating and air conditioning systems don’t just perform the way you want them to, they run efficiently. If not, they would exert more effort to reach the desired indoor temperature they’re set to achieve. As a result, they consume or waste more energy in the process, and might fail prematurely. To improve your existing cooling equipment’s performance efficiency, remember the following: Say No to Dirty Filters and Coils Contaminants are the number one reason why air conditioners underperform and break down due to overheating. Considering that your AC filters the indoor air it conditions, it’s doomed to collect dirt over time. If you have a split air conditioning system, the constant environmental exposure of its outdoor component makes it impossible to remain clean and function on its own. Read the manufacturer’s guidelines regarding filter and coil maintenance. Generally, you need to change the former once every month or three mont...