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All units had rooftop-mounted air conditioner units which gave them their distinct "top hat" look. Norfolk Southern Railway (NS) was the sole operator of this model. [ 2 ] The company owned 125 units, numbered 8764–8888. [ 3 ]
Sustainable automotive air conditioning is the subject of a debate – also known as the Cool War – about the next-generation refrigerant in car air conditioning. An advocacy group, The Alliance for CO 2 Solutions , supports the uptake of carbon dioxide (CO 2 ) as a refrigerant in passenger cars, and the chemical industry is developing new ...
The Marelli-Stone-type air-conditioning system [33] provided winter heating and summer refrigeration of the carriage by means of two air-conditioning units positioned above the lavatories. Each unit comprised a copper coil for refrigeration and an electric radiator for heating, which were invested by a flow of air produced by a pair of ...
December often means visiting far-flung family for the Christmas holiday – and for an EV this means testing total range, high-speed efficiency, storage space, battery pre-conditioning and, of ...
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The efficiency of air conditioners is often rated by the seasonal energy efficiency ratio (SEER), which is defined by the Air Conditioning, Heating and Refrigeration Institute in its 2008 standard AHRI 210/240, Performance Rating of Unitary Air-Conditioning and Air-Source Heat Pump Equipment. [61]