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Distiller Chemical Industry: Prototype Design

Location

The building of the boiler room where the chimney is located has a height of approximately 12 m. The chimney can be accessed by a cat ladder, but the floor next to the chimney must be considered as not practicable as part of the ceiling of the boiler room.

 

Design decisions

It is proposed to install 2 WHRU modules that will penetrate one of the WOGA boiler gas outlet chimneys.

The WHRU units will be installed one on each side of the chimney 600 mm wide.

WHRU modules will be equipped with waterblocks for water cooling.

The cooling water distribution installation will be provided with traps to avoid the presence of air in the water circuit.

Each WHRU unit will consist of 6 waterblocks. Each waterblock will cool the cold face of 6 peltier cells. Therefore, each WHRU unit will consist of 36 peltier cells (6 waterblock x 6 peltier cells).

To maximize the effect of temperature on the WHRU collectors, a deflector will be installed inside the rectangular chimney.

For monitoring the correct functioning of the prototype, 3 types of sensor nodes will be installed:

Type 1-Temperature Node: Th, Tc and Tgases output.

Type 2-Node Wattmeter to measure the power generated by the system. Said node will be installed inside the electrical panel.

2 units will be installed. of type 1 sensor nodes (one for each WHRU module) and 1 unit of type 2 node.

A LoRa Gateway will be installed to collect all the data sent by the sensors. The Gateway will be installed inside the boiler room right next to the existing electrical panels. The Gateway will be powered from one of the existing boxes.

 

Distiller Chemical Industry: Technical visit

In order to start a thermoelectricity project, it is important to have a physical visit to the facilities in order to determine the waste heat ranges and the temperature in addition to the installation of the WHRU system.  The technical visit was made at the Distiller Company (Sta. Perpetua de la Mogoda, Barcelona) on May 9th, 2018.

Heat Source

After analyzing all the heat generation points of the facilities it was decided to explore several points, specially the WOGA oil boiler.

 

Measurements

Below you can see the results obtained

Oil boiler Point 1
Oil boiler Point 2
Internal duct
Pipe WOGA oil boil point 1
Pipe WOGA oil boil point 2
Pipe WOGA oil boil point 3
Pipe WOGA oil boil point 4

Conclusion

According to the visit made, it is considered that the chimney of the output gases of the WOGA boiler can be a suitable place for the placement of the WHRU units.

The temperature display on the electrical panel of the boiler indicates a temperature of the WOLGA boiler outlet gases of 270ºC but the real range is about 200ºC.

Flue gas outlet duct dimensions and sheet thickness will be requested.

WHRUs must be installed in the upper part of the flue gas outlet duct. We should have water at that point. According to what was discussed with Head of the Plant Maintenance,  there will be no problem in having a continuous amount of water to help dissipate the heat and achieve a greater temperature differential and thus obtain higher yields from our equipment. The flow, pressure and temperature data of the cooling water must be available.

The client uses the use of his WIFI for communication with the outside.

Working hours of the plant: from Sunday at 10pm until Friday at 10pm (120h / set. For 220 days / year).

 

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