Combined Heating and Cooling Technique for Cold Storage Integrated with Thermal Power Plant: a Conceptual Study

Combined Heating and Cooling Technique for Cold Storage Integrated with Thermal Power Plant: a Conceptual Study

Ramapather Balaji, Fazil hassan P & Naviyn Kumar SM Tech ScholarsRural Energy Centre, Gandhigram Rural Institute (Deemed University), Gandhigram.balaji.227k@gmail.com, fazilhassanp@gmail.com, naviynkumar20@gmail.com

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Introduction Cold storagePreservationDistributionDairy products, ice cream, meat processing, poultry processing, fish processing, fruits & vegetables etc.Need both electric and thermal energy

RefrigerationTransfer of HeatLow Temperature to High temperatureTemperature below local environmentFood preservationCold storageAir Conditioning

Vapor Absorption Refrigeration systemAmmonia water basedAmmonia-refrigerantWater-absorbentBoth refrigeration and air conditioning

Ammonia Absorption Refrigeration System

Thermal Power Plant

Various losses in TPP

Ammonia Absorption Refrigeration Plant for Cold Storage

Cost benefit analysis of cold storage driven by AARPSl.no.ParameterUnitCase 1Case 2Case 3Conventional Compression Cycle Refrigeration PlantAARP (with Grid power for Auxiliaries)AARP (with DG set for Auxiliaries)1.Capacity of Cold StorageTons500050005000500050005000500050002.Storage TemperatureDeg. C222222223.Refrigeration LoadTR1001001001004.Source of PowerGridDG setGridDG set5.Cost of PowerRs/kWh565556666.FuelNANABagasseRice HuskCoalBagasseRice HuskCoal7.Gross Calorific ValuekCal/kg400500150040050015008.Incremental Initial CostRs in million2222.52.52.59.Annual Saving in Running CostRs in million1.942.061.252.572.681.9210.Payback Period Years1> 1< 2< 11> 1

ConclusionThe total electricity requirement reduces substantially. A small DG set can be used to make the cold storage independent of grid power.The biomass and the agro fuel available locally can be used to drive AARP. The operation cost and maintenance cost of the cold storage is very low.The cold storage can store a wide range of products having different storage temperature.The investment in grid power connection, stand by DG set, plant room etc is substantially reduced.

References[1] Herold KE, Radermacher L. Absorption heat pump, Mech. Eng., Aug, 1989;6873.[2] Gosney WB. Principle of refrigeration. Cambridge Uni. Press, 1982.[3] Perez-Blanco H. Absorption heat pump performance for different types of solution. Int J Ref1984;7(2):11522[4]Adhikari, A., 2008. Out of cold storage. Business Today, 1 June. Available Online: http://m.businesstoday.in/story/out-of-cold-storage/1/2178.html.[5] Ajith Apte, 2001. ACRECONF, September 26-28, New Delhi, India. p.191-192[6]Alam, A.M., 2006. Agri-Exports : Challenges and Prospects. CAB Calling, October-December. p.54. Available at: http://www.cab.org.in/CAB%20Calling%20Content/Organic%20Agriculture%20and%20Food%20Industry%20-[7]ASHRAE, 2002: 2002 ASHRAE Handbook Refrigeration, (SI edition). American Society of Heating, Refrigeration and Air-Conditioning Engineers Inc., Atlanta, GA, USA.[7]http://www.grimsbytelegraph.co.uk/cold-stores-future-run-waste-heat/story-20248477-detail/story.html#ixzz2n5SuH6x9

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