.... By establishing a thermodynamic model, the simulation of the proposed system and its parametric analyses are conducted. Energetic and exergetic investigations are carried out to study the role of equivalence ratio, engine speed, condenser temperature, refrigeration evaporator temperature, air-conditioning...

...Yousif M. Alkhulaifi; Esmail M. A. Mokheimer For current and future sustainability, refrigerants with high global warming potential (GWP) are being phased out and replaced with environmentally friendly refrigerants. To this end, research into the current and possible future low-GWP refrigerant...

.... , 2019 , “ Improving Refrigeration Performance by Using Pressure Exchange Characteristic of Wave Rotor ,” ASME J. Energy Resour. Technol. , 141 ( 2 ), p. 022004 . 10.1115/1.4041722 [2] Liu , P. , Zhu , Y. , Wang , H. , Zhu , C. , Zou , J. , Wu , J. , and Hu , D...

...Candeniz Seckin A Kalina cycle is coupled to an ejector refrigeration cycle to generate power and refrigeration outputs, simultaneously. Ejector refrigeration cycle is driven by the heat which is extracted from a high-temperature/pressure stream of Kalina cycle working fluid since the energy...

...Ayman J. Alazazmeh; Esmail M. A. Mokheimer; Abdul Khaliq; Bilal A. Qureshi The main objective of the current work is to investigate the thermodynamic performance of a novel solar powered multi-effect refrigeration system. The proposed cycle consists of a solar tower system with a heliostat field...

... refrigeration (VAR) system. The working fluid used in this theoretical thermodynamic evaluation is ammonia water mixture. A low temperature heat recovery (150 °C–200 °C) from engine exhaust gas, solar collectors, or similar can be used to operate the plant. A controlling facility is provided to set the required...

...), operates on a pressurized semiclosed cycle and is integrated with a vapor absorption refrigeration system. The HPRTE uses heat from its exhaust gases to power the absorption refrigeration unit, which cools the high-pressure compressor inlet of the HPRTE to below ambient temperatures and also produces some...

...Ahmad M. Mahmoud; S. A. Sherif; W. E. Lear Increasing the coefficient of performance of a vapor compression refrigeration system may be realized by utilizing work recovering expansion devices that additionally lower the enthalpy of the refrigerant at the inlet of the evaporator. Depending...

...A. Khaliq; R. Kumar; I. Dincer In this paper, a novel industrial waste heat recovery based cogeneration is proposed for the combined production of power and refrigeration. The system is an integration of Rankine power cycle and absorption refrigeration cycle. A thermodynamic analysis through energy...

...Joseph J. Boza; William E. Lear, Ph.D.; S. A. Sherif, Ph.D. A thermodynamic performance analysis was performed on a novel cooling and power cycle that combines a semiclosed gas turbine called the high-pressure regenerative turbine engine (HPRTE) with an absorption refrigeration unit. Waste heat...

...M. J. Morales; S. A. Sherif The purpose of this study is to investigate how the heat exchanger inventory allocation plays a role in maximizing the thermal performance of a two-stage refrigeration system with two evaporators. First, the system is modeled as a Carnot refrigerator and a particular...

... such as evaporative cooling, fogging and absorption refrigeration were studied and compared with the ATES system. It was shown that for 6 h of operation per day, the power output and efficiency of the GT on the warmest day of the year could be increased from 16.5 to 19.7 MW and from 31.8% to 34.2%, respectively...

...Na Zhang; Noam Lior Cogeneration can improve energy utilization efficiency significantly. In this paper, a new ammonia-water system is proposed for the cogeneration of refrigeration and power. The plant operates in a parallel combined cycle mode with an ammonia-water Rankine cycle and an ammonia...

...Tahar Khir; Rahim K. Jassim; Galal M. Zaki An optimization for the geometrical parameters of continuous fins on an array of tubes of a refrigeration evaporator is developed in this paper using the exergy method. The method is based on exergy, economic analysis, and optimization theory...

...Gregory J. Kowalski; Mansour Zenouzi A generalized thermodynamic model is developed to describe combined cooling, heating, and power generating systems. This model is based on reversible power generation and refrigeration devices with practical, irreversible heat exchanger processes. It provides...

...Amir A. Kharazi; Pezhman Akbari; Norbert Müller The use of a novel 3-port condensing wave rotor is suggested to enhance the turbocompression in a refrigeration cycle that works only with water (R718) as a refrigerant. Although the implementation of such a wave rotor essentially reduces the size...

... control strategies so that these systems can become commercially viable. 23 03 2004 15 04 2005 zirconium alloys titanium alloys chromium alloys iron alloys compressors cooling heat exchangers refrigeration air conditioning The adverse impact of conventional synthetic...

...Sanjay Vijayaraghavan; D. Y. Goswami A new thermodynamic cycle has been developed for the simultaneous production of power and cooling from low-temperature heat sources. The proposed cycle combines the Rankine and absorption refrigeration cycles, providing power and cooling as useful outputs...

...Jizhou He; Jincan Chen; Chih Wu A general irreversible cycle model of a magnetic Ericsson refrigerator is established. The irreversibilities in the cycle model result from the finite-rate heat transfer between the working substance and the external heat reservoirs, the inherent regenerative loss...

...Sanjay Vijayaraghavan; D. Y. Goswami A combined power and cooling cycle is being investigated. The cycle is a combination of the Rankine cycle and an absorption refrigeration cycle. Evaluating the efficiency of this cycle is made difficult by the fact that there are two different simultaneous...