Isobaric expansion (IE) engines can directly convert heat into mechanical energy, making them particularly attractive for applications such as vapor-driven pumps and compressors. A recent initial assessment investigating the utilization of IE reciprocating compressors has revealed that vapor use efficiency is inherently low in case simplest direct-acting compressor designs. Based on this analys...

The precise prediction of compressor operation within gas turbine performance simulation is key to an accurate performance simulation model. This paper describes the modeling of multistage axial-flow compressors in gas turbine performance simulations. An alternative modeling technique to the conventional characteristic based approach is presented. The purpose is an improved prediction of the co...

Water as a refrigerant (R718) is compared with other modern refrigerants (R717, R290 R134a, R12, R22, and R152a) regarding refrigeration capacity and COP (coefficient of performance). A computer program simulating a theoretical vapor compression refrigeration cycle was developed to calculate COPs, compression ratios, and discharge temperatures of the refrigerants from the compressor. The effect...

The performance of a multistage centrifugal compressor is highly influenced by the ambient conditions, especially during summer seasons; their capacity shrinks and thus power requirement for compression will increase. prime cause these constraints interstage cooling limitations. This study simulates various suction conditions on Aspen HYSYS® suggests its debottlenecking making temperatures comp...