Heat recovery from Diesel engines: A thermodynamic comparison between Kalina and ORC cycles

Abstract

To cite this version:Paola Bombarda, Costante Invernizzi, Claudio Pietra. Heat recovery from Diesel engines: a thermodynamic comparison between Kalina and ORC cycles. Applied Thermal Engineering, Elsevier, 2009, 30 (2-3) This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. Although the obtained useful powers are actually equal in value, the Kalina cycle requires a very high maximum pressure in order to obtain high thermodynamic performances (in our case, 100 bar against about 10 bar for the ORC cycle). So, the adoption of Kalina cycle, at least for low power level and medium-high temperature thermal 2 ACCEPTED MANUSCRIPT sources, seems not to be justified because the gain in performance with respect to a properly optimized ORC is very small and must be obtained with a complicated plant scheme, large surface heat exchangers and particular high pressure resistant and no-corrosion materials. ACCEPTED MANUSCRIPT

Improved analysis of Organic Rankine Cycle based on radial flow turbine

“…Many researchers have studied Kalina Cycle and Rankine Cycle with unconventional working fluids. There are several disadvantages for Kalina Cycle, such as low cycle performance, needing large heat transfer area, needing properties of enduring high pressure and corrosion resistance [3]. ORC is attracting more and more interests in power generation field with low temperature energy.…”

A comparison of advanced heat recovery power cycles in a combined cycle for large ships

“…Being a mixture, the working fluid evaporates and condensates nonisothermally and this potentially provide the advantage of a better match between non-isothermal heat sources and sinks [3]. The Kalina cycle has been proposed in many different configurations and in the present study, the model is made with a configuration similar to those found in work by Jonsson et al [18] and Bombarda [5], which have been found suitable for marine application. Figure 2 illustrates the process flow diagram of the Kalina cycle and the TC.…”

“…The Kalina cycle has in the literature [3,4] been claimed to possess potential to achieve higher conversion efficiencies for WHR in general, compared to both ORC and steam Rankine cycles. Controversy exists however, and modelling efforts [5] have showed that the performance of ORC and Kalina may, at best, may be similar for marine application. For this reason it is the goal of the present study to compare the three mentioned power cycles for the previously mentioned case study.…”

Exergy Analysis of Absorption Power Cycle Depending on Source Temperatures

“…Bombarda et al [16] carried out a comparative analysis on thermodynamic performance of Kalina and organic Rankine cycles. Ganesh and Srinivas [17] investigated a lowtemperature Kalina cycle to optimize the heat recovery from solar collectors.…”