Features June 2019 Issue

Air Conditioning at Anchor

Is it even possible without a generator?

We often get this question. ďMy car has air conditioning when Iím running down the street so why canít my boat?Ē First, your car only has air conditioning when the engine is running, which works out fine because we only need air conditioning when the engine is running. Second, the air-conditioning load for the car is a tiny parasitic load compared to the power required to drive the car down the road. Itís actually less than the increased drag caused by driving with the windows rolled down. Thus, it is more or less an engineering afterthought with regards to the energy balance of an automobile.

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