{"id":581,"date":"2022-12-30T05:30:40","date_gmt":"2022-12-30T05:30:40","guid":{"rendered":"https:\/\/wordpress-837908-2967703.cloudwaysapps.com\/?post_type=activity&p=581"},"modified":"2023-06-27T15:43:08","modified_gmt":"2023-06-27T15:43:08","slug":"ac-vs-fan-energy-consumption","status":"publish","type":"activity","link":"https:\/\/fairconditioning.org\/fc-activity\/activity\/ac-vs-fan-energy-consumption\/","title":{"rendered":"AC vs Fan: Energy Consumption"},"content":{"rendered":"\n
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Objective<\/h5>\n\n\n\n

To compare the energy consumption of a fan vs a room air conditioner.<\/p>\n\n\n\n

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

Students will realize that an air conditioner consumes much more energy than a ceiling fan.<\/p>\n\n\n\n

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

An air conditioned laboratory (in college building), power meter.<\/p>\n\n\n\n

Prerequisites<\/h5>\n\n\n\n
    \n
  1. Conceptual knowledge of electrical energy consumption.<\/li>\n\n\n\n
  2. Knowledge of how a power meter works.<\/li>\n\n\n\n
  3. Suitable for final year architecture students.<\/li>\n<\/ol>\n<\/div>\n<\/div>\n\n\n\n
    Procedure<\/h5>\n\n\n\n
      \n
    1. Identify a laboratory (eg: a computer lab) in your college having an air conditioner in it.<\/li>\n\n\n\n
    2. Insert air conditioner plug into the power meter.<\/li>\n\n\n\n
    3. Insert the power meter into electrical socket<\/li>\n\n\n\n
    4. Switch on the AC.<\/li>\n\n\n\n
    5. Note the power consumption from the power meter.<\/li>\n\n\n\n
    6. Keep noting the power consumption after every 10 minutes for 1 hour. Tabulate them as shown below.<\/li>\n\n\n\n
    7. Estimate the mean power consumption by taking an average of all the intermittent values of power consumption.<\/li>\n\n\n\n
    8. Estimate the energy consumption for 1 hour.<\/li>\n\n\n\n
    9. Identify a fan in the classroom.<\/li>\n\n\n\n
    10. Look for the nameplate on the fan which states it\u2019s power consumption.<\/li>\n\n\n\n
    11. Estimate the hourly energy consumption of the fan.<\/li>\n\n\n\n
    12. Compare the hourly energy consumption of the fan vs AC.<\/li>\n\n\n\n
    13. Estimate the no. of fans which collectively consume energy equivalent to one air conditioner.<\/li>\n<\/ol>\n\n\n\n
      Calculations<\/h5>\n\n\n\n
        \n
      1. Table for calculating energy consumption of an AC.<\/li>\n<\/ol>\n\n\n\n
        Time Interval<\/td>Power Consumption (kW)<\/td><\/tr>
        Initial Time (A)<\/td><\/td><\/tr>
        10 minutes (B)<\/td><\/td><\/tr>
        20 minutes (C)<\/td><\/td><\/tr>
        30 minutes (D)<\/td><\/td><\/tr>
        40 minutes (E)<\/td><\/td><\/tr>
        50 minutes (F)<\/td><\/td><\/tr>
        60 minutes (G)<\/td><\/td><\/tr>
        Average $$\\frac{A+B+C+D+E+F+G}{7}$$ (PAC<\/sub>)<\/td><\/td><\/tr><\/tbody><\/table>
        Table for calculating energy consumption of an AC<\/em>
        <\/figcaption><\/figure>\n\n\n\n

        Step 2:<\/strong> Energy Consumption of AC (kWh) = Average Power Consumption (kW) x no. of hours used (hrs) = PAC<\/sub> (kW) x 1 (hour)<\/p>\n\n\n\n

        Step 3:<\/strong> Energy Consumption of Fan (kWh) = Power Consumption x no. of hours used (hrs.) = PFAN<\/sub> (kW) x 1 (hour)<\/p>\n\n\n\n

        Step 4:<\/strong> No. of fans which collectively have the same energy consumption as that of an AC = $$\\frac{\\:\\text{Energy consumption of an AC (kWh) }}{\\:\\text{Energy consumption of a fan (kWh)}}$$<\/p>\n\n\n\n

        Reference Images<\/h5>\n\n\n\n
        \n
        \"\"<\/figure>\n\n\n\n
        \"\"<\/figure>\n<\/figure>\n","protected":false},"excerpt":{"rendered":"

        Objective To compare the energy consumption of a fan vs a room air conditioner. Outcome Students will realize that an air conditioner consumes much more energy than a ceiling fan. Requirements An air conditioned laboratory (in college building), power meter. Prerequisites Procedure Calculations Time Interval Power Consumption (kW) Initial Time (A) 10 minutes (B) 20 […]<\/p>\n","protected":false},"author":1,"featured_media":2095,"comment_status":"open","ping_status":"closed","template":"","meta":{"inline_featured_image":false},"activity_subject":[124,125],"academic_year":[68],"complexity":[60],"content_tags":[387,416,431],"activity_type":[365],"activity_duration":[174],"acf":[],"_links":{"self":[{"href":"https:\/\/fairconditioning.org\/fc-activity\/wp-json\/wp\/v2\/activity\/581"}],"collection":[{"href":"https:\/\/fairconditioning.org\/fc-activity\/wp-json\/wp\/v2\/activity"}],"about":[{"href":"https:\/\/fairconditioning.org\/fc-activity\/wp-json\/wp\/v2\/types\/activity"}],"author":[{"embeddable":true,"href":"https:\/\/fairconditioning.org\/fc-activity\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fairconditioning.org\/fc-activity\/wp-json\/wp\/v2\/comments?post=581"}],"version-history":[{"count":12,"href":"https:\/\/fairconditioning.org\/fc-activity\/wp-json\/wp\/v2\/activity\/581\/revisions"}],"predecessor-version":[{"id":2683,"href":"https:\/\/fairconditioning.org\/fc-activity\/wp-json\/wp\/v2\/activity\/581\/revisions\/2683"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/fairconditioning.org\/fc-activity\/wp-json\/wp\/v2\/media\/2095"}],"wp:attachment":[{"href":"https:\/\/fairconditioning.org\/fc-activity\/wp-json\/wp\/v2\/media?parent=581"}],"wp:term":[{"taxonomy":"activity_subject","embeddable":true,"href":"https:\/\/fairconditioning.org\/fc-activity\/wp-json\/wp\/v2\/activity_subject?post=581"},{"taxonomy":"academic_year","embeddable":true,"href":"https:\/\/fairconditioning.org\/fc-activity\/wp-json\/wp\/v2\/academic_year?post=581"},{"taxonomy":"complexity","embeddable":true,"href":"https:\/\/fairconditioning.org\/fc-activity\/wp-json\/wp\/v2\/complexity?post=581"},{"taxonomy":"content_tags","embeddable":true,"href":"https:\/\/fairconditioning.org\/fc-activity\/wp-json\/wp\/v2\/content_tags?post=581"},{"taxonomy":"activity_type","embeddable":true,"href":"https:\/\/fairconditioning.org\/fc-activity\/wp-json\/wp\/v2\/activity_type?post=581"},{"taxonomy":"activity_duration","embeddable":true,"href":"https:\/\/fairconditioning.org\/fc-activity\/wp-json\/wp\/v2\/activity_duration?post=581"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}