| http://www.w3.org/ns/prov#value | - When the ambient temperature is below freezing and the load is very low, such as going down a steep hill, the waste heat of the exhaust air can be very low because there is little product water being generated and evaporated, and whatever water is evaporated may actually freeze in the condenser 59, and/or in the conduit 65 that leads back to the fuel cell stack.
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