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1

Waste heat recovery from the air preparation room in a paint shop

Adamkiewicz Andrzej, Nikończuk Piotr

Archives of Thermodynamics

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2019

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Vol. 40, no 3

229--241

EN

The policy of sustainable development seeks to improve energy efficiency of industrial equipment. Efforts to improve energy efficiency also apply to the paint shops, where the recovery of waste heat is sought. The main source of a large amount of low-temperature waste heat in the paint shop is the spray booth. The second place where a large amount of low temperature waste heat is released is the room where the compressed air is prepared. Low energy efficiency of air compressors requires a large electric power supply. As a result, the emitted large heat fluxes become waste energy of the technological process. Heat is equivalent to up to 93% of the electric power supplied in the air compression process. There are solutions for recovering heat from compressors coming from the oil cooling water, but then the waste heat from the cooling of the compressed air and from the electric motor is released into air in the room. A method for recovering low-temperature waste heat from the air preparation room by means of an air-source heat pump has been proposed. An energy balance of the air compression and dehumidification process for the paint shop was made. A Matlab’s built-in numerical model includes air compressor and dehumidifier, heat recovery and accumulation for the purposes of use in the spray booth. A simulation experiment was carried out on the effectiveness of heat recovery from the air preparation room. The use of combined energy management in paint shops was proposed.

2

Buffer management in solving a real sequencing problem in the automotive industry – Paint Shop 4.0 concept

Bysko Sara, Krystek Jolanta, Bysko Szymon, Lenort Radim

Archives of Control Sciences

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2019

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Vol. 29, No. 3

507--527

EN

The paper presents a Car Sequencing Problem, widely considered in the literature. The issue considered by the researchers is only a reduced problem in comparison with the problem in real automotive production. Consequently, a new concept, called Paint Shop 4.0., is considered from the viewpoint of a sequencing problem. The paper is a part of the previously conducted research, identified as Car Sequencing Problem with Buffers (CSPwB), which extended the original problem to a problem in a production line equipped with buffers. The new innovative approach is based on the ideas of Industry 4.0 and the buffer management system. In the paper, sequencing algorithms that have been developed so far are discussed. The original Follow-up Sequencing Algorithm is presented, which is still developed by the authors. The main goal of the research is to find the most effective algorithm in terms of minimization of painting gun changeovers and synchronization necessary color changes with periodic gun cleanings. Carried out research shows that the most advanced algorithm proposed by the authors outperforms other tested methods, so it is promising to be used in the automotive industry.

3

Control system for slow running bearings. Scientific Journal of Silesian University of Technology

Oeljeklaus M., Pešík L.

Zeszyty Naukowe. Transport / Politechnika Śląska

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2018

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z. 100

157--164

EN

The subject of this paper is the design of a control system for slow running bearings including a strength analysis and load capacity measurement. The intention here is to apply the results to the manufacturing operation of chain conveyors in paint shops.

4

Pomiary skuteczności wentylacji w pomieszczeniach lakierni stolarni

Gładyszewska-Fiedoruk K.

Instal

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2009

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nr 4

18-19

PL

Przedmiotem opracowania jest określenie skuteczności wentylacji mechanicznej wywiewnej dla pomieszczenia lakierni stolarni. W omawianym przypadku zainstalowany jest w lakierni wentylator wywiewny „obudowany” drewnianymi żaluzjami do regulacji wydajności wentylatora oraz ustawienia pożądanego kierunku przepływu powietrza. Powietrze do pomieszczenia doprowadzane jest w sposób grawitacyjny. Po włączeniu wentylatora wywiewnego w pomieszczeniu lakierni tworzy się duże podciśnienie, powietrze z pomieszczenia sąsiedniego (ogrzane) w sposób grawitacyjny wpływa do badanego pomieszczenia poprzez otwór wentylacyjny. Strumień powietrza nawiewanego przez otwór nawiewny zapewnia dostarczenie 1/3 strumienia powietrza usuwanego z pomieszczenia. 2/3 strumienia powietrza doprowadzane jest przez szczelinę w drzwiach i inne nieszczelności pomieszczenia równomiernie rozlokowane w ścianach lakierni.

EN

The paper seeks to examine the efficiency of the mechanical ventilation system in the paint shop of a woodworking shop. The presented case consists of exhaust fan located in paint shop, framed within wooden shutters which control the fan’s efficiency and set the desired direction of the airflow. The natural ventilation system supplies air into the room. After switching on the exhaust fan, high underpressure is created: heated air from the adjoining room enters the paint shop through supply grill that operates on the basis of natural ventilation. The incoming airflow ensures that 1/3 of the air extracted from the pant shop is supplied. The remaining 2/3 of airflow enters the paint shop through the slot in the door and other leaks fitted evenly in the walls of the room.

5

Problem sortowania kolorów w lakierni

Legierski W.

Zeszyty Naukowe. Automatyka / Politechnika Śląska

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2006

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z. 144

39-45

PL

Sortowanie kolorów jest w przemyśle samochodowym podyktowane względami ekonomicznymi. Bazuje ono na minimalizacji liczby zmian kolorów w procesie produkcyjnym w lakierni. Przedstawiono efektywne metody minimalizacji liczby tych zmian działające w oparciu o heurystyczne kryteria. Zaproponowana metoda dała ponad dwukrotną poprawę efektywności sortowania.

EN

Color sequencing problem have been solved in the automotive industry due economical aspects. It is based on minimization of the number of changing colors during industrial process of paint shop. Effective method based on heuristic criteria is presented. This method gives over two times increasing of effectiveness for real-world problem in comparison to existing algorithm.