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These motors are sometimes called DC motors, sometimes EC motors and occasionally DC/EC motors. DC stands for direct current and EC stands for electronically commutated.. DC motors allow the speed of the fans within a fan coil unit to be controlled by means of a 0-10 Volt input control signal to the motor/s, the transformers and speed switches associated with AC fan coils are not required.
The first mini-split system was sold in 1961 by Toshiba in Japan, and the first wall-mounted mini-split air conditioner was sold in 1968 in Japan by Mitsubishi Electric, where small home sizes motivated their development. The Mitsubishi model was the first air conditioner with a cross-flow fan.
A representative pressure–volume diagram for a refrigeration cycle. Vapour-compression refrigeration or vapor-compression refrigeration system (VCRS), [1] in which the refrigerant undergoes phase changes, is one of the many refrigeration cycles and is the most widely used method for air conditioning of buildings and automobiles.
The A Series was launched in 2010 and initially consisted of the "all-round" models A530, AH530 and AH550, which are offered in different variants. Similarities were displays with 39.6 cm (15.6 inches) diagonal, false led backlighting and 1366 × 768 pixels (16:9 aspect ratio, with or without anti-glare protection), as well as the built-in Intel HM55 chipset and keyboards with a numeric keypad.
The fuel efficiency for the 2.0-liter engine (non-turbo, manual transmission 4WD) is 10.8 km/L (31 mpg ‑imp; 25 mpg ‑US) based on Japanese Government emissions tests using 10 different modes of scenario standards, and 18 km/L (51 mpg ‑imp; 42 mpg ‑US) at speeds consistently maintained at 60 km/h (37.3 mph), based on figures listed in ...
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