1.Hot Arid ClimateThe characteristics of thisclimatic conditions are high solar radiation, high air temperature on day, highdaily temperature amplitude, little rain, sand storms. The earthship face isturned towards north as solar gain is not required.
Without the direct sun heatplenty of reflected light can still enter the interior pat of the ship. Thecool earth helps high exterior temperature to cool down on its way to livingspaces. Warm air can be held overhead by having high ceiling. Water fountains,Plants, water pots help to keep the temperature down. Food producing plantsrequire direct sunlight, so the garden can be set up on the roof or a southfacing garden can be done 7. Fig3.5 Typical Cross-section of Earthship in Hot Arid Climate 7 3.2.
2Hot Humid ClimateThe earthship should be facingnorth. To prevent humidity accumulation ventilation acts as an importantfactor, it helps in cooling and evaporation. Passing air cools the body whentouches human skin by evaporating the precipitation. This concept is used toreduce humidity and temperature in the earthship. A dark painted stack withgood thermal mass should be used inside the ship.
It absorbs the heat in daytime and starts releasing it slowly at night and thus warming the air inside.This warm air rises creating a suction, and this makes air to move thusventilation is achieved. In humid conditions ground moisture also plays animportant role, therefore it is recommended to locate the ship at high groundlevel 7. Fig 3.6 TypicalCross-section of Earthship in Hot Humid Climate 7 3.
2.3.Temperate ClimateThis is the most ideal andcomfortable conditions for humans. The mass of the earthship is enough tocounter temperature changes. The glazing need not to be inclined.
The mass tovolume ratio doesn’t play any role here, therefore the room can be widenedwithout any concerns. An overhang can also be provided to shade the interiorfrom unneeded sunlight in summer 7. Fig3.
7 Typical Cross-section of Earthship in Temperate Climate 7 3.2.4.Cold ClimateIn cold conditions the ratioof mass to volume should be increased by decreasing the height, width and depthof the interior spaces. The building should be submerged as much as possible.The structure should be kept below the frost line by providing thick earthparapet. The heating potential will beaffected in spring and fall by overhang; hence they are not provided or can beavoided.
The glazing should be inclined such that it is perpendicular to thelowest solar altitude i.e. in winter 7. Fig 3.8 TypicalCross-section of Earthship in Cold Climate 7