**8. Conclusion**

develop technical-economic and then exergo-economic con-elations. This task is not easy since often the data is discrete and the interpolations or extrapolations are not conclusive due to the nonlinearity of the cost according to the parameters used

For compressors, the price depends on the type of compressor, the power, and the volume swept, while for motor compressors the price is given according to the

So for each model corresponding to a certain type of compressor, a function of

. (Volume swept)<sup>c</sup>

We are able to express by an analytical approach the price of a certain type of

For evaporators the price depends on the type of evaporator, the power, the exchange surface, the flow of the heat transfer fluid at the evaporator, the number

Evaporator price = function (type, power, surface, flow, no. of fans, no fins).

The price of a condenser is given according to the type of condenser, the power,

Price = function (type, power, surface area, heat transfer fluid flow, no. of fans).

the exchange surface, the flow of heat transfer fluid, and the number of fans.

Generally correlations have been developed to determine the investment costs of

type, the power, and flow of the heat transfer fluid at the condenser.

Motor compressor cost = f (type, power, flow rate of the coolant at the

Compressor cost = f (type, power, volume swept).

by the manufacturer.

*Electrodialysis*

*7.1.1 Compressor cost*

the following form is established: Compressor cost = a. (Power)<sup>b</sup>

10.3 < cyl < 30.6 [cm<sup>3</sup>

835 < *QEV* < 2650 [W] 475 < W < 1225 [W]

of fans, and the pitch of the fins.

850 < QEV < 5500 [W] 685 < DEV < 3325 [m<sup>3</sup>

*7.1.2 Evaporator cost*

Determine the coefficients a, b, and c.

compressor, knowing the technical characteristics.

For the compressor, the correlations used are [37]:

]

For the evaporator, the correlations used are [37]:

/h]

For the condenser, the correlations used are [37]:

condenser).

each organ.

with

with

**16**

*7.1.3 Condenser cost*

The energy performance of power and refrigeration cogeneration and trigeneration through an organic Rankine cycle (ORC) with a vapor compression cycle (VCC) by a new combination systematic is examined. We can use a lowtemperature energy source. Two cases of refrigeration and cogeneration are analyzed, including cases of cogeneration (10, 10°C) and congelation (0, 17°C).

The effects of the system parameters include the condensation and vaporization temperatures for ORC and VCC, and the efficiency E on performance such as thermal efficiency, specific refrigeration, and net work output and global system performance are investigated.

According to the analysis and the investigation carried out during this study, the main interpretations retained are:


#### **Nomenclature**



**Author details**

**19**

Noureddine Toujani\*, Nahla Bouaziz and Lakder Kairouani

\*Address all correspondence to: toujeninoureddine@gmail.com

Tunis, Tunis El Manar University, Tunis, Tunisia

provided the original work is properly cited.

Energetic and Environmental Research Unity, National Engineering School of

*Performance Analysis of a New Combined Organic Rankine Cycle and Vapor Compression…*

*DOI: http://dx.doi.org/10.5772/intechopen.91871*

© 2020 The Author(s). Licensee IntechOpen. This chapter is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/ by/3.0), which permits unrestricted use, distribution, and reproduction in any medium,
