{"id":2739,"date":"2023-06-28T08:44:00","date_gmt":"2023-06-28T08:44:00","guid":{"rendered":"https:\/\/fairconditioning.org\/fc-activity\/?post_type=activity&p=2739"},"modified":"2023-06-28T08:44:00","modified_gmt":"2023-06-28T08:44:00","slug":"energy-efficient-systems-savings","status":"publish","type":"activity","link":"https:\/\/fairconditioning.org\/fc-activity\/activity\/energy-efficient-systems-savings\/","title":{"rendered":"Energy Efficient System\u2019s Savings"},"content":{"rendered":"\n
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Objective<\/h5>\n\n\n\n

To estimate the energy and GHG emission savings from an energy efficient air conditioner.<\/p>\n\n\n\n

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

Students will realize that energy efficiency is a great way to save energy and GHG emissions and make the design choices accordingly.<\/p>\n\n\n\n

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

None<\/p>\n\n\n\n

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

Conceptual knowledge of<\/p>\n\n\n\n

    \n
  1. Electrical energy consumption<\/li>\n\n\n\n
  2. Carbon Footprinting<\/li>\n\n\n\n
  3. Tonnage of Operational ACs in the college<\/li>\n<\/ol>\n\n\n\n
    Given Data<\/h5>\n\n\n\n
      \n
    1. Increase in efficiency of the Air conditioning system = 10%<\/li>\n\n\n\n
    2. Average daily operation = 8 hrs<\/li>\n\n\n\n
    3. Average monthly operation = 22 days <\/li>\n\n\n\n
    4. Monthly energy consumption of a typical ceiling fan ~12 kWh<\/li>\n\n\n\n
    5. Carbon Emission Factor for Electricity = 1.19 $$\\frac{\\:\\text{kg CO2e}}{\\:\\text{kWh}}$$<\/li>\n\n\n\n
    6. 1 tree absorbs approximately 250 kg of CO2<\/sub> in its lifetime.<\/li>\n<\/ol>\n\n\n\n
      Procedure<\/h5>\n\n\n\n

      Step 1: <\/em><\/strong>Students find out the total air conditioning load (TR – Ton of Refrigeration) of the campus.<\/p>\n\n\n\n

      Step 2: <\/em><\/strong>Convert TR to kW.<\/p>\n\n\n\n

      Step 3: <\/em><\/strong>Estimate the air conditioning energy consumption for a month.<\/p>\n\n\n\n

      Step 4: <\/em><\/strong>Select and determine energy savings for an energy efficient air conditioning system.<\/p>\n\n\n\n

      Step 5: <\/em><\/strong>Estimate the equivalent number of fans that can be operated due to these monthly savings.<\/p>\n\n\n\n

      Step 6:<\/em><\/strong> Estimate the GHG emissions saved (kg CO2<\/sub>e).<\/p>\n\n\n\n

      Step 7:<\/em><\/strong> Estimate the equivalent number of trees planted through electricity savings.<\/p>\n\n\n\n

      Sample Calculations<\/h5>\n\n\n\n

      Step 1:<\/em><\/strong> Air conditioning load in college campus (TR) = 40 TR<\/p>\n\n\n\n

      Step 2:<\/em><\/strong> Air conditioning load in college campus (kW) = TR x 3.517<\/p>\n\n\n\n

      = 40 x 3.517<\/p>\n\n\n\n

      = 140.7 kW<\/p>\n\n\n\n

      Step 3:<\/em><\/strong> Air Conditioner\u2019s monthly energy consumption (kWh)= Air Conditioning Load (kW) x\u00a0avg. daily operation (hrs) x no. of\u00a0operation days in a month<\/p>\n\n\n\n

      = 140.7 x 8 x 22 <\/p>\n\n\n\n

      = 24,763 kWh<\/p>\n\n\n\n

      Step 4:<\/em><\/strong> Energy savings due to increase in efficiency (kWh) = % increase in energy efficiency\u00a0x monthly energy consumption\u00a0(kWh)<\/p>\n\n\n\n

      = 0.1 x 24,763<\/p>\n\n\n\n

      = 2,476 kWh<\/p>\n\n\n\n

      Step 5:<\/em><\/strong> Equivalent no. of fans that can be operated due to increased efficiency= $$\\frac{\\:\\text{Energy savings due to increase in efficiency (kWh)}}{\\:\\text{Monthly energy consumption of a ceiling fan (kWh)}}$$<\/p>\n\n\n\n

      = $$\\frac{\\:\\text{2476}}{\\:\\text{12}}$$<\/p>\n\n\n\n

      ~206 fans<\/p>\n\n\n\n

      Step 6: <\/em><\/strong>GHG Emissions saved (kgCO2<\/sub>e) = Emission Factor for Electricity (kg CO2<\/sub>e\/kWh) x\u00a0Energy Savings (kWh)<\/p>\n\n\n\n

      = 1.19 x 2,476<\/p>\n\n\n\n

      = 2,947 kg CO2<\/sub>e<\/p>\n\n\n\n

      Step 7:<\/em><\/strong> Equivalent no. of trees planted =$$\\frac{\\:\\text{GHG Emissions saved (kg CO2e)}}{\\:\\text{Carbon Absorption Capacity of one tree (kg CO2e)}}$$<\/p>\n\n\n\n

      = $$\\frac{\\:\\text{2946.3}}{\\:\\text{250}}$$<\/p>\n\n\n\n

      ~12 trees<\/p>\n\n\n\n

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

      Supplementary Notes Section: Carbon Footprint<\/a><\/p>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

      Objective To estimate the energy and GHG emission savings from an energy efficient air conditioner. Outcome Students will realize that energy efficiency is a great way to save energy and GHG emissions and make the design choices accordingly. Requirements None Prerequisites Conceptual knowledge of Given Data Procedure Step 1: Students find out the total air […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","template":"","meta":{"inline_featured_image":false},"activity_subject":[124,125],"academic_year":[68],"complexity":[60],"content_tags":[412,431,433],"activity_type":[371],"activity_duration":[173],"acf":[],"_links":{"self":[{"href":"https:\/\/fairconditioning.org\/fc-activity\/wp-json\/wp\/v2\/activity\/2739"}],"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=2739"}],"version-history":[{"count":5,"href":"https:\/\/fairconditioning.org\/fc-activity\/wp-json\/wp\/v2\/activity\/2739\/revisions"}],"predecessor-version":[{"id":2744,"href":"https:\/\/fairconditioning.org\/fc-activity\/wp-json\/wp\/v2\/activity\/2739\/revisions\/2744"}],"wp:attachment":[{"href":"https:\/\/fairconditioning.org\/fc-activity\/wp-json\/wp\/v2\/media?parent=2739"}],"wp:term":[{"taxonomy":"activity_subject","embeddable":true,"href":"https:\/\/fairconditioning.org\/fc-activity\/wp-json\/wp\/v2\/activity_subject?post=2739"},{"taxonomy":"academic_year","embeddable":true,"href":"https:\/\/fairconditioning.org\/fc-activity\/wp-json\/wp\/v2\/academic_year?post=2739"},{"taxonomy":"complexity","embeddable":true,"href":"https:\/\/fairconditioning.org\/fc-activity\/wp-json\/wp\/v2\/complexity?post=2739"},{"taxonomy":"content_tags","embeddable":true,"href":"https:\/\/fairconditioning.org\/fc-activity\/wp-json\/wp\/v2\/content_tags?post=2739"},{"taxonomy":"activity_type","embeddable":true,"href":"https:\/\/fairconditioning.org\/fc-activity\/wp-json\/wp\/v2\/activity_type?post=2739"},{"taxonomy":"activity_duration","embeddable":true,"href":"https:\/\/fairconditioning.org\/fc-activity\/wp-json\/wp\/v2\/activity_duration?post=2739"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}