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The temperature of the cooling air may range from well below freezing to 50 °C. Further, while engines in long-haul boat or rail service may operate at a steady load, road vehicles often see widely varying and quickly varying load. Thus, the cooling system is designed to vary cooling so the engine is neither too hot nor too cold.
As the highest capacity unit available at that time, the system was capable of quickly cooling the passenger compartment and also reducing humidity, dust, pollen, and tobacco smoke. The system drew in more outside air than contemporary systems; thus, reducing the staleness associated with automotive air conditioning at the time.
Because of their light weight and small motors, they are extremely energy-efficient with a typical energy efficiency of 1.1 kWh (4.0 MJ) per 100 km [56] (1904 MPGe 810 km/L 0.124 L/100 km), even more efficient than bicycles and walking. However, as they must be recharged frequently, they are often collected overnight with motor vehicles ...
She got estimates from four different companies for installing a cooling system, but every project was between $20,000 and $25,000, she said. Even with subsidies she can't afford it.
The most appealing part of this research is how potentially energy efficient and environmentally friendly this cooling technology is. The different materials used, commonly shape-memory alloys , provide a non-toxic source of emission free refrigeration.
Nissan Sentra: 34 mpg. The Nissan Sentra proves that affordable and efficient cars don't have to look dorky. It's powered by a 149-hp 2.0-liter inline-four and continuously variable automatic ...
As most buildings have consistent hours of operation, programmed thermostats and lighting controls are common. However, too many companies believe that merely having a computer controlled Building automation system guarantees energy efficiency. As an example one large company in Northern California boasted that it was confident its state of the ...
The average American spends almost $2,000 per year on fuel, so choose a ride that won't guzzle gas. See which popular cars boast the highest fuel efficiency.