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
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.
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
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
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
Identified research variables for future workOptimization of Collector sizeCollector inclination angleHot water flow rateHot water temperatureChilled water temperature (inlet/outlet)Chilled water flow rateType of RefrigerantsTypes of Phase Change MaterialsConcentration of LiBr-H2OSolution flow rateCooling water flow rate