Indirect evaporative cooling system

An indirect evaporative cooling system for cooling a space adjacent to or containing an ablution bay, comprising:

• the ablution bay comprising:
• a plurality of water taps;
• and
• a greywater drainage below the plurality of water taps;
• a greywater storage tank having first and second sides;
• and
• an evaporative cooler apparatus;
• wherein the ablution bay is adjacent to or contained in the space to be cooled;
• the greywater storage tank is fluidly connected to the greywater drainage system of the ablution bay through a piping network at least partially below the ablution bay and/or the space to be cooled;
• the greywater storage tank is fluidly connected via an outlet to a water pump on the first side of the greywater storage tank, the outlet being positioned at a mid-height of the greywater storage tank, and the greywater storage tank is fluidly connected to the greywater drainage system of the ablution bay on the second side;
• wherein the greywater storage tank comprises a plurality of heat pipes connected on one end perpendicularly to a wall of the greywater storage tank extending outwards;
• and
• the plurality of heat pipes are equally spaced around the wall of the greywater storage tank;
• wherein the water pump is fluidly connected to a top of an evaporative cooler apparatus and the evaporative cooler apparatus is located above the space to be cooled in a dome shaped housing;
• wherein the evaporative cooler apparatus comprises;
• a wet channel;
• at least one spray nozzle;
• and
• a dry channel;
• wherein the at least one spray nozzle is located at the top of the evaporative cooler apparatus and is fluidly connected to the water pump;
• wherein the at least one spray nozzle is connected to the wet channel;
• the wet channel is located directly above the dry channel;
• a first side of the dry channel is connected to a first opening with a fan and outside air;
• a first side of the wet channel is connected to a first opening to outside air;
• wherein the first openings of the wet and dry channels are located on a back side of the dome shaped housing facing the opposite direction of an entrance to the space to be cooled.