An Investigation Of A Novel Combined Cooling,Heating And Power (CCHP) System Integrated With Renewable Energy System

Energy use is directly linked to well-being and prosperity across the world.Meeting the growing demand for energy in a safe and environmentally responsible manner is a significant challenge.There are around seven billion people on Earth,and population growth will likely increase energy demand,which depends on the adequacy of energy resources.In addition,increasing population and economic development in many countries have serious implications for the environment since energy generation processes(e.g.,generation of electricity,heating,cooling,and shaft work for transportation and other applications)emit pollutants,many of which are harmful to ecosystems.Utilizing advanced technologies to mitigate global warming and increase the efficiency of energy systems are key objectives,with ways to meet them proposed and tested in many countries.Among these technologies,multigeneration processes stand out as a possibility for making important contributions due to their potential for high efficiencies as well as low operating costs and pollution emissions per energy output.However,issues such as fossil fuel depletion and climate change amplify the advantages and significance of efficient multigeneration energy systems.Integrated Cooling,Heating,and Power(CCHP)System,including several developments,become an essential approach for the current energy requirements for a wide range of applications,and the(CCHP)system provides the future trend of energy production system for the whole world to solve the centralized power station and energy-related difficulties such as security of energy production,emission control,and instability in the energy,economy,and energy conservation.Therefore,mathematical modeling of the CCHP system using Engineering Equation Solver(EES)software is investigated in the current work to study the CCHP system’s performance depending on biomass natural gas as an energy source for the gasifier.The proposed CCHP system consists of a biomass gasification unit,Organic Rankine Cycle(ORC),gas turbine electricity generation subsystem,an absorption chiller cooling,heat recovery steam generation for heating,and heat exchanger for domestic hot water.The energy flow analysis for the proposed system as well as impacts of mixing gas ratio of both biogas and natural gas on the system performance,are investigated.The results reported that the cooling,heating,and domestic hot water capacity are 2,9.18,and 0.3 MW,respectively,at a constant power output of 30 MW.In the parametric study,increasing the percentage of biogas in the fuel mixture,the cooling,heating,and domestic hot water output increases linearly.Moreover,an exergy analysis is carried out for the CCHP system,and the results indicated that the highest exergy losses come from the R22-DMA absorption system.It is found that the cost rate for the proposed system is reported as 72.2 ＄/h.