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11 mn01 review 1

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11 mn01 review 1

  1. 1. Project Phase – I Review -IDevelopment of green telecom networks by employing Solar driven Absorption Chiller (SAC) - Phase Change Material (PCM) Integrated Technology (SAPIT) for cooling telecommunication shelters in India Undertaken by: Anirudh B Mentored by: Dr.R.Velavan 11MN01 Associate Professor School of Energy PG Scholar PSG College of Technology ME Energy Engineering School of Energy PSG College of Technology
  2. 2. Project motivation The Indian Telecommunications network is the third largest in the world and the second largest among the emerging economies of Asia By March 2009 there were as many as 2,58,459 telecom towers in the country and with a customer base of more than 600 million subscribers in 2011, 1,50,000 more towers were installed to meet the demand. Erecting one telecom tower involves an investment of about Rs. 30 lakhs Power consumed by a telecom tower varies from 1-5kW (24X7) A telecom tower is installed with a DG set of 20kVA capacity running 16-20hrs (rural/semi-urban) a day , thereby consuming 4000lts per year and emitting 10 tons of CO2 per year. Out of which nearly 60% of the power is required for ventilation requirements in the form of air-conditioning.
  3. 3. Literature Review Design of a solar absorption cooling system in a Greek hospital T. Tsoutsos , E. Aloumpi , Z. Gkouskos , M. Karagiorgas Energy and Buildings (2009) The authors have used Transient System Simulation Program (TRNSYS) v.15 to simulate a hospital building in Greek to calculate its cooling and heating demand and thereby designed a LiBr-H2O Solar absorption cooling system and also made feasibility study based on economic analysis. Modeling of a solar powered absorption cycle for Abu Dhabi A. Al-Alili, M.D. Islam , I. Kubo, Y. Hwang, R. Radermacher, Applied Energy (2012) The authors have modeled and studied the feasibility of implementing NH3-H2O solar absorption cooling system for Abu Dhabi’s weather conditions using TRNSYS
  4. 4. Literature Review Solar Thermal Driven Cooling System for a Data Center in Albuquerque New Mexico N. Fumo, V. Bortone, J. C. Zambrano, Journal of Solar Energy Engineering, ASME(2011) The authors have done a theoretical analysis based energy, exergy and cost of an absorption chiller driven by solar thermal energy as cooling plant alternative for data centers Design and performance of solar powered absorption cooling systems in office buildings Ursula Eicker, Dirk Pietruschka Energy and Buildings (2009) The authors have modeled and simulated the feasibility of implementing LiBr-H2O solar absorption cooling system in office buildings in Germany using TRNSYS
  5. 5. Literature Review A second law analysis and entropy generation minimization of an absorption chiller Aung Myat, Kyaw Thu, Young-Deuk Kim, A. Chakraborty, Won Gee Chun, Kim Choon Ng Applied Thermal Engineering (2011) The authors have done a performance analysis of an absorption refrigeration system using entropy generation under transient conditions. Genetic Algorithm was used as an optimization tool to locate the system minimum under all defined domain of heat sources and cooling water temperatures Optimization of a solar driven absorption refrigerator in the transient regime Mouna Hamed, Ali Fellah, Ammar Ben Brahim Applied Energy (2012) The authors have done a theoretical study in dynamic mode of an absorption refrigerator endoreversible Model . A global minimizing time optimization is performed in view to reach maximum performances. A mathematical model combining the classical thermodynamics and heat and mass transfers principles was developed
  6. 6. Identified research variables for future workOptimization of Collector sizeCollector inclination angleHot water flow rateHot water temperatureChilled water temperature (inlet/outlet)Chilled water flow rateType of RefrigerantsTypes of Phase Change MaterialsConcentration of LiBr-H2OSolution flow rateCooling water flow rate
  7. 7. Proposed Activity of research
  8. 8. Proposed Activity of research
  9. 9. S.no Equipment required Specifications Unit cost No. of Total cost units (`)1 Telecom cabinet 1 × 0.5 × 0.75m - 1 100002 Vapour Absorption Hot water based Vapour Absorption chiller - 0.5TR 25000 `/kW 1 50000 chiller (including cooling tower)3 Solar Evacuated tube Size:1.5𝑚2 12500 `/m2 1 25000 collectors Evacuated glass tube with selective coating4 Resistance heater 500W 2000 `/kW 2 40005 Thermal Storage tank 0.3m3 7500 `/m3 1 22756 PCM panels HS-29 (Inorganic salt) in HDPE panels (1000 × 160 × 16mm), 1000 `/kg 5 panels 7000 Phase change temp: 27 to 29oC (7kg) Density: 1150kg/m3, Operating range: 22 to 34oC Latent heat: 190 kJ/kg7 Thermocouples K-Type, Range: -200oC to +1350oC, Resolution: 0.1oC from - 300 `/piece 10 Nos. 3000 200oC to 640oC, Accuracy: ±1oC8 Insulation Polyurethane foam insulation for both thermal storage tank - - 2000 andtelecom cabinet9 Labour + contigency - - - 1000010 Total - - - 1,13,275
  10. 10. Milestone for completion