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Publication Title | HydrocurrentTM Organic Rankine Cycle Module 125EJW - Compact and High-performance Waste Heat Recovery System Utilizing Low Temperature Heat Source -

Organic Rankine Cycle

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Mitsubishi Heavy Industries Technical Review Vol. 52 No. 4 (December 2015)

53

HydrocurrentTM Organic Rankine Cycle Module 125EJW - Compact and High-performance Waste Heat Recovery System Utilizing Low Temperature Heat Source -

Mitsubishi Heavy Industries

Marine Machinery & Engine Co., Ltd.

A waste heat recovery system is installed in marine vessels to reduce their fuel consumption, which simultaneously can reduce the emission of pollutants such as CO2. We have developed a compact and high-performance waste heat recovery system HydrocurrentTM (Note) Organic Rankine Cycle (ORC) Module 125EJW in conjunction with Calnetix Technologies, LLC (Head office: Cerritos, California, U.S.A.; hereinafter referred to as Calnetix). This system can capture the heat from low-temperature heat sources such as the jacket cooling water of the main engine of the ship, which could not be used for this purpose, and convert it to electric power for shipboard consumption.

In this system, a radial turbine newly developed by Mitsubishi Heavy Industries Marine Machinery & Engine Co., Ltd. is mounted in Calnetix’s established standard system for waste heat recovery, which in itself has earned a solid reputation as onshore equipment of this kind. This new waste heat recovery system gained class approval from Nippon Kaiji Kyokai (NK) and Lloyd’s Register (LRS), and was launched in the market as our next strategic product.

Note: HydrocurrentTM is a trademark of Calnetix.

1. Productoverview

The specifications and configurations of the system are given in Tables 1 and Figure 1, respectively.

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Table 1 System specifications

HydrocurrentTM ORC 125EJW

Rated output Refrigerant R245fa

Model

125kW

Generator

Heat source temp.

Rotating speed

Output voltage Frequency

Directly-coupled turbine-driven, permanent magnet synchronous generator

85°C

Approx. 16,000 rpm (variable)

380V/440V 50Hz/60Hz

Figure 1

System drawing

(1) (2)

The following are the features of this system. High efficiency

High efficiency is achieved by the supporting structure of the magnetic bearings with no frictional loss and the reduced leakage loss by the newly-developed radial turbine (Figure 2).

Compact design

A compact generator is realized by integrating the radial turbine with the high-speed

permanent magnet generator.

Image | HydrocurrentTM Organic Rankine Cycle Module 125EJW - Compact and High-performance Waste Heat Recovery System Utilizing Low Temperature Heat Source -



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