Investigating a Combined Cooling, Heating and Power System from Energy and Exergy Point of View with RK-215 ICE Engine as a Prime Mover

Abstract

Using cogeneration systems is a great way to tackle fossil fuel consumption problems. This paper introduces a Combined Cooling Heating Power (CCHP) system to recover the waste heat of an RK215 heavy diesel engine as a prime mover. Therefore the CCHP system consists of Internal Combustion Engine (RK215), a heat storage tank, and an absorption chiller. Also, the system has been studied in four modes: CCHP, CHP, CCP, and single generation. The waste heat ratio has changed due to a y factor, and the effect of this different parameter, such as the start of fuel injection and exhaust gas heat, on the system's efficiency by considering first and second laws of thermodynamic in different operating modes has been investigated. The system's highest energy and exergy efficiency in CCHP mode is equal to 50.46 and 30.8%, respectively. According to the result, as the CCHPs cooling load to the absorption chiller increases, the performance also rises. Also, the system's carbon dioxide emissions reduction has been studied. The results showed that using different modes for waste heat recovery can reduce carbon dioxide by up to 30% approximately for different modes. Also, the fuel energy saving ratio (FESR) has been investigated, and the results showed that systems in CCHP, CHP, and CCP modes could have FESR approximately equal to 21%.

Energy and Exergy Study of a Nanofluid-based Solar System Integrated with a Quadruple Effect Absorption Cycle and Thermoelectric Generator

“…Mathematical modeling and calculation of the integrated system are carried out based on the following assumptions [17]:…”

“…For the thermodynamic investigation of the studied system, the laws of mass conservation and the first and second laws of thermodynamics are used for each component of the proposed cycle. Each component can be used as a control volume for input and output flow, heat transfer, and work interaction [17].…”

“…Gebreslassie et al [16] investigated on exergy analysis of multieffect water-LiBr absorption systems. Aghagolzadeh Silakhor et al [17] introduced a Combined Cooling Heating Power (CCHP) system to recover the waste heat of an RK215 heavy diesel engine. The proposed system applied the absorption chiller to produce cooling.…”

Performance of Heat Recovery Cycle in order to Enhance Efficiency and its Mutual Effect on the Engine Performance with the Aid of Thermodynamic Simulation

“…(4). By recovering this part of the heat, the fuel consumption and therefore the production of greenhouse gases will be reduced in proportion to the produced power (5). In this regard, there are two ways to reduce fossil fuel consumption.…”

Energy Efficiency of Residential Buildings in Cold and Dry Climates using Simulation-based Comparative Analysis: Case Study in Tabriz

“…The significance of the built environment extends beyond energy consumption during construction and occupancy (4). It also garners substantial attention from governments, occupants, and stakeholders who are keen on improving the energy efficiency of buildings (5,6). Building design strategies (BDS) play a pivotal role in addressing this challenge and are applied in three primary areas: environment, climate, and energy.…”