{"id":2544,"date":"2023-06-26T10:31:57","date_gmt":"2023-06-26T10:31:57","guid":{"rendered":"https:\/\/fairconditioning.org\/fc-activity\/?post_type=activity&p=2544"},"modified":"2023-06-26T10:31:57","modified_gmt":"2023-06-26T10:31:57","slug":"idec-physical-model","status":"publish","type":"activity","link":"https:\/\/fairconditioning.org\/fc-activity\/activity\/idec-physical-model\/","title":{"rendered":"IDEC: Physical Model"},"content":{"rendered":"\n
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Objective:<\/h5>\n\n\n\n

To exercise on scaled model of IDEC<\/p>\n\n\n\n

Outcome:<\/h5>\n\n\n\n

Students will understand how Direct and Indirect Evaporative Cooling systems work with hands-on experience of model making.\u00a0<\/p>\n\n\n\n

Requirements:<\/h5>\n\n\n\n

Panels (of what material, type?) for Heat Exchanger, Water, Water pipes, Fan, Water tank, Float valve, Air blower, Cardboard<\/p>\n\n\n\n

Prerequisites:<\/h5>\n\n\n\n

 <\/em><\/strong>A conceptual knowledge of<\/p>\n\n\n\n

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  1. Evaporative cooling<\/li>\n\n\n\n
  2. Direct Evaporative cooling<\/li>\n\n\n\n
  3. Indirect Evaporative cooling<\/li>\n<\/ol>\n\n\n\n
    Procedure:<\/h5>\n\n\n\n

    Step 1: <\/em><\/strong>Organise the class into smaller groups of students to work on components individually.<\/p>\n\n\n\n

    Step 2:<\/em><\/strong> Create a structure with four walls, roof and floor to mimic an actual room.<\/p>\n\n\n\n

    Step 3: <\/em><\/strong>Create two kinds of panels to allow dry and wet air streams. Make the panels of two different colours to distinguish their purpose.<\/p>\n\n\n\n

    Step 4: <\/em><\/strong>Assemble them alternatively. This becomes a heat exchanger.<\/p>\n\n\n\n

    Step 5: <\/em><\/strong>Place the water pipe above these panels. Make holes in the pipe to ensure water drips only over wet airstream panels<\/p>\n\n\n\n

    Step 6: <\/em><\/strong>Switch on the water supply so that water drips on the panels meant for wet airstream<\/p>\n\n\n\n

    Step 7:<\/em><\/strong> Switch on the fan<\/p>\n\n\n\n

    Step 8:<\/em><\/strong> Allow warm air to pass through the wet surface of the heat exchanger so that water on it evaporates and material of heat exchanger gets cooled.<\/p>\n\n\n\n

    Step 9:<\/em><\/strong> Allow air to pass through the dry panels of the heat exchanger where it is cooled by its virtue of interaction with the cool surface<\/p>\n\n\n\n

    Step 10:<\/em><\/strong> Air is now cooled and using a pipe let it out the other end<\/p>\n\n\n\n

    References:<\/h5>\n\n\n\n

    Fair conditioning youtube channel: Indirect Direct Evaporative Cooling Animation<\/p>\n\n\n\n

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