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Sustainable Air Conditioning Copyright © TORO Copyright © TORO 2012 ShamKant Mirashi
Sustainable Air Conditioning Copyright © TORO 2012 Sustainable Air Conditioning Copyright © TORO Fossil fuel is finite 2. Alternative energy is expensive 3. Predicted high future demand 4. Demand outstripping the supply already 5. India has the second highest population 6. GHG and Co2 emissions. Why need to pay attention to end use energy efficiency?
Sustainable Air Conditioning Copyright © TORO 2012 Implications for CO 2 Emissions Half of the projected increase in emissions comes from new power stations, mainly using coal & mainly located in China & India Increase = 14.3 Gt (55%) Gt of CO 2 CoalOilGas
Sustainable Air Conditioning Copyright © TORO 2012 Alternative Policy Scenario: Global Savings in Energy-Related CO 2 Emissions Improved end-use efficiency of electricity & fossil fuels is accounts for two-thirds of avoided emissions in 2030 Alternative Policy Scenario Reference Scenario Increased nuclear (10%) Increased renewables (12%) Power sector efficiency & fuel (13%) Electricity end-use efficiency (29%) Fossil-fuel end-use efficiency (36%) Gt of CO 2
Sustainable Air Conditioning Copyright © TORO 2012 Sustainable Air Conditioning Copyright © TORO 2012 Use a different way of energy generation rather than fossil fuel: e.g. by 2030, contributions of reduction from: Renewable energy (12%), nuclear (10%) Improve the fuel to energy conversion of fossil fuel. Improve the loss of energy transmission to end use: Improve energy efficiency at end-use: potential of contributing up to 65% of the projected growth reduction CO 2 sequestration (probably not mature enough to be significant) Ways to save energy and reduce emission
Sustainable Air Conditioning Copyright © TORO 2012 Compounding losses…or savings so start saving at the downstream end
Sustainable Air Conditioning Copyright © TORO 2012 Sustainable Air Conditioning Copyright © TORO 2012 Advanced countries have set ambitious goals. One scenario studied in Germany is: a) maintain current level of total energy consumption while maintaining economic growth, build no more fossil fuel power stations; b) phase out existing nuclear stations c) build renewable to replace d) improve energy efficiency by 50% by 2050 to meet new energy needs What other countries are doing?
Sustainable Air Conditioning Copyright © TORO 2012 Sustainable Air Conditioning Copyright © TORO 2012 UK:similar consideration. Carbon tax introduced. Aim to reduce carbon dioxide by 50% by USA: Government buildings to save energy of 2% per year from 2005 to 2015: that is 20% in ten years. China: Laws for RE and for EE established in recent years. What other countries are doing?
Sustainable Air Conditioning Copyright © TORO 2012 Sustainable Air Conditioning Copyright © TORO 2012 INDIA: Laws for Renewable Energy and Energy Efficiency established in recent years. Alternate Energy initiatives like Prime Minister's solar Mission and Energy efficiency Mission active What is India doing?
Sustainable Air Conditioning Copyright © TORO 2012 Sustainable Air Conditioning Copyright © TORO 2012 With innovative approaches, and changes in conventional installation practices, such targets are realistic. Cases quoted by Rocky Mountain Institute: over 50% energy eff. improvement achieved Case quoted by Scientific America in 9/2006 issue: factory in Germany 43% improvement. India : 1000 Crore savings due to energy labeling programme Let s see some examples Are these energy efficiency targets realistic?
Sustainable Air Conditioning Copyright © TORO 2012 Sustainable Air Conditioning Copyright © TORO 2012 T5 tubes much more energy efficient Plug and enhance devices now available Electronics ballasts incur less loss Use of reflective luminaires Much of the existing lighting systems could be retrofitted LED lighting finding users Lighting
Sustainable Air Conditioning Copyright © TORO 2012 Use of LED Exit Signs Conventional Exit Sign 18W 2-year service life LED Exit Sign 3W 5-year service life Estimated savings: 24,800 kWh/annum
Sustainable Air Conditioning Copyright © TORO 2012 Replacement of Incandescent Lamps Incandescent lampsCFL Lamp wattage (W)409 Total circuital power (W)1, Lighting level (lux)1,3001,600 Estimated Savings10,000 kWh/annum Incandescent lamps CFLs
Sustainable Air Conditioning Copyright © TORO 2012 A Novel Air-Con Exhibition OR A Modern Work of Art
Sustainable Air Conditioning Copyright © TORO 2012 Sustainable Air Conditioning Copyright © TORO Air conditioning already uses more than 16% of the total electrical energy produce in India 2. Average HVAC system running constantly uses its capital cost in electricity in just few months. 3. Typical retrofit ROI is recoverable in less than 24 months. 4. Reduction in Capex for back up power and connected switchgear improves the pay back period 5. Due to High humidity an temperature combination IAQ improvement cost are extremely high. Why focus on HVAC
Sustainable Air Conditioning Copyright © TORO 2012 Sustainable Air Conditioning Copyright © TORO 2012 New Idea !!!
Sustainable Air Conditioning Copyright © TORO 2012 Sustainable Air Conditioning Copyright © TORO 2012 Technologies which are India centric – Alternate refrigerant - DSM – Demand Side Management Alternate approach for comfort cooling – Divide & Rule New view points Water
Sustainable Air Conditioning Copyright © TORO 2012 Design Energy efficient air-cooled a/c system with evaporative condensing. Do not excessively oversize the Cooling systems. Use Indirect evaporative cooling for industry Use Hybrid Air handling units for commercial applications Applications 1. Heat Recovery Ventilators for CO 2 control 2. Treated Fresh Air Units 3. Deep Dehumidifiers 4. Whole House Ambiators 5. Industrial Two Stage Ambiators Building Cooling Technologies
Sustainable Air Conditioning Copyright © TORO 2012 Sustainable Air Conditioning Copyright © TORO Industrial & Power station Control Rooms 2. Large Buildings Like malls, banquets 3. High Population buildings Like Multiplexes 4. High heat buildings Steel aluminum Industry 5. Large assembly plant like automotive 6. Large Storage like 3 PL and other warehouses 7. Independent Bungalows 8. Educational Institutions 9. Animal houses Typical Areas for big savings
Sustainable Air Conditioning Copyright © TORO 2012 Sustainable Air Conditioning Copyright © TORO Sustainable cooling 2. Makes the alternate energy viable 3. Saves energy for other uses 4. Improves IAQ 5. Lowest connected load 6. Lowest Opex 7. Lowest maintenance Benefits
Sustainable Air Conditioning Copyright © TORO kW or Just 7.5 kW
Sustainable Air Conditioning Copyright © TORO 2012 Sustainable Air Conditioning Copyright © TORO Set ourselves a vision and devoted to it. Senior management to lead and provide support. 2. In the past, we might not have needed a vision. Now it is a pressing a need 3. Now we should think in terms of technology, think in longer terms, 4. Think about corporate social responsibilities. How do we go about it?
Sustainable Air Conditioning Copyright © TORO 2012 Sustainable Air Conditioning Copyright © TORO Traditions and established practices and designs 2. Market structure and conditions may not encourage adoption of innovative products 3. Habits 4. We need some courage to adopt changes Institutional barriers that may hinder changes and innovation
Sustainable Air Conditioning Copyright © TORO 2012 Sustainable Air Conditioning Copyright © TORO 2012 Thank You
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