heating loads u201c heat load u201d refers to the amount of heat each must transfer from the hot fluid medium to the cooler atmospheric air per unit time of the four heat exchangers shown in the figures the engine water cooler 116 and the intercooler 118 have the highest heat loads loads that are greater than both the oil cooler 120 and the condenser 122 heat transfer from a heat exchanger to the atmosphere is a function of the temperature of the air to which heat is dumped and the area of the heat exchanger core the cooler the air passing through the heat exchanger the more heat the air can absorb and the smaller the heat exchanger core necessary to transfer that amount of heat by arranging the engine water cooler 116 and the intercooler 118 in parallel the air each gets is only heated by the condenser 122 and the oil cooler 120 the cooling air entering the engine air cooler and the intercooler is still relatively cool each heat exchanger can therefore be made much smaller since the inlet air is cool since the heat exchangers can be made smaller they can also be stacked one on top of the other in the over and under arrangement shown in fig2 in an alternative design if air entering the engine water cooler were already preheated by having previously passed through the intercooler it would be so hot that a much larger engine water cooler would be required the intercooler 118 has an inlet conduit 124 and an outlet conduit 126 that are disposed on either side of the engine compartment adjacent to the sidewalls 128 130 of the hood.