CCHP

Presentation on combined cooling, heating and power (CCHP)

Presentation oncombined cooling, heating and power(CCHP)

PRESENTED BYAmandeep singhAmit K. sharmaGaurav sharmaOut line of presentationIntroductionCCHP SystemCCHP Versus Conventional generationTypes of CCHP systemStatus and development of cchp technologiesScoping studyBenefits of combined heat and powerApplication of CCHP Case Study Building Load Calculation Analysis of CCHP System Sensitivity Analysis of CCHP System Conclusions

Introduction Combined cooling, heat and power (CCHP) or trigeneration refers to the simultaneous generation of electricity and useful heating and cooling from the exhaust heat of power generation unit.It integrates an absorption chiller to produce cooling effect, which is sometimes referred to as building cooling heating and power (BCHP) system. Design and operation of CCHP systems must consider the type and quality of the energy being consumed.CCHP systems have huge energy efficiency improvements because they produce two forms of useful energyheat and electricity, from a single fuel source.Potentially reaching an efficiency of up to 80%, for the best conventional plants.Recent development of CCHP systems is related to the emergence of DER (distributed/decentralized energy resources).Schematic of cchp system

Energy flow diagram of CCHP system

Cchp Versus Conventional generation

Improved Environmental Quality

Types of CCHP system

On the basis of cooling requirement CCHP system with Electric chiller CCHP system without Electric chiller

On the basis of size of Prime mover Micro CCHP system Small scale CCHP system Medium scale CCHP system Large scale CCHP system

8Contd.According to chillerAbsorption chillersAdsorption chillers Desiccant dehumidifiers

According to source of energy CCHP system driven by solar energy CCHP system driven by biofuel

STATUS AND DEVELOPMENT OF CCHP TECHNOLOGIES:

Prime moversSteam turbinesMicro-turbinesReciprocating internal combustion enginesCombustion turbinesStirling enginesFuel cells

Scoping studyPurpose To determine whether installing a CHP system will be both technically and economically viable for the site. Stages: Determination of energy profileCalculation of Heat to power ratioInterpretation of resultsBasic financial calculationBasic environmental calculation

Benefits of combined heat and power

CHP requires significant capital investment in plant and resources. However, the high capital outlay is balanced by:lower costsa better environmental performancea more reliable and secure energy supply. Other benifitsEnhanced capital allowanceCarbon reduction commitmentRenewable obligations

APPLICATION OF CCHP

Combned cooling,heating & power in supermarket

Energy saving in airport by cchp

Economics of cchp system in hospital

Cchp in household

chpp in food industry

Case Study

Floor properties

Building load calculationDESIGN OF CCHPCONTD.ContdMonthly electrical loads of building

Analysis of CCHP system With 22.06kW Gas Turbine and 4.70TR VAM capacity

In analysis of CCHP system following parameters have been calculated Amount of electricity generated by Gas Turbine Amount of electricity need to Imported/Exported Amount of heat available in Turbine exhaust gas Amount of cooling produced by VAM & remaining cooling Amount of heat not utilized by VAM & HRB Natural gas consumption in Gas Turbine and VAM IRR of the system Total CO2 emission reduction by the project activity

Electricity generated and Imported with Gas turbine of capacity 22.06kW at efficiency 25% and 0.50 Turbine load fraction(LF).Amount of heat available in turbine exhaust gas and heat distribution in VAM and HRB Amount of heat available in turbine exhaust gas and heat distribution in VAM and HRB

.Cooling generated by VAM using turbine exhaust heat & remaining cooling

Natural gas consumption in Gas Turbine & VAM

Annually, 2157m3 Natural gas consumed in Gas Turbine and 351m3 Natural gas need to burn in VAM to generate remaining cooling.Economic analysisLife of the system20gas turbine cos1000000instalation cost100000VAM cost300000total cost1400000Escalation5%price of electricity Rs./kWh6price of natural Rs./m317maitenance cost of gas turbine5000maitenance cost of VAM5000 Economic analysisElectricity cost=annual generation*price of electricity Rs./kWhGas cost=annual gas consumption*price of natural Rs./m3Assume O&M cost of turbine and VAM=Rs.10000/yearSaving in elec.=total cooling and heating load*price of electricity Rs./kWhNegative cashflow= O&M cost +gas cost+electricity costPositive cashflow= saving in electricity costCumulative cashflow= Positive cashflow- Negative cashflowPayback period=2yrsIRR=53%S. No.ParameterTurbine capacity22.06W1.Electricity Generated (kWh/year)241662.Natural gas consumption in Turbine(m3/year)21573.Heat produced by turbine exhaust(kJ/year)248244.Maximum cooling produced by VAM (TR)4.75.Natural gas consumption in VAM(m3/year)3516.Electricity Import/Export (kWh/year)379827.Amount of heat not utilized (kJ/year)27078.IRR ( % )53Economic analysis THANK YOU