Dimple plates – Heat transfer by means of dimple plates instead of tubes
Dimple plates have certain technical and economical advantages in many applications over conventional tube heat exchangers. These pillow plates are characterized by the wavy “pillow-shaped” surface and fully welded construction. A destinction is made between pillow plates profiled only on one side. In this case a thinner cover sheet is welded to a thicker base sheet. Pillow plates profiles on both sides are manufactured out of two sheets of equal thickness welded together.
Optimal solution with dimple plates based on the customer’s data and requirement
Based on the customer’s data and requirements, our experienced project engineers work out thermodynamically and fluidically optimal solutions for the given heat transfer task. The optimum solution is worked out in close cooperation with the plant manufacturer and the operator. Out of the calculations or simulations, the resulting design is based on decades of our experience and advanced Computational Fluid Dynamics (CFD). Our designers work with modern 2D and 3D CAD programs in order to details, dimension and design the projected solution suitable for production.
The production of the thermally and fluidically optimized dimple plates take place directly at our modern company on modern laser welding equipment. Dimple plates for special applications can also be resistance welded. The whole manufacturing process is accompanied by our quality assurance, so that high quality of our products is guaranteed. We are able to supply dimple plates and heat exchangers as pressure equipment according to the requiremnets of the European Pressure Equipments Directive 2014/68/EU, with TR CU certificate for the Eurasian Customs Union and according to the requirements of ASME BPVC.
Our decades of experience with dimple plates and core competencies
Due to certain serial production with tendency to individual one-off pieces, each of our products built up from pillow plates, no matter wether it is a single dimple plate heat exchanger, or a single laser-welded dimple jacket or pressure vessel wall or an entire heat exchange system , an ice water generating falling-film chiller, a static ice bank or an industrial ice maker, is cost-effectively and individally adapted to the user’s requirements.
With the experience gained from many thousands of installed dimple plates, we have acquired special know-how especially in the following areas :
- Tailor-made Heat Exchange Systems, if regular and easy cleaning are required
- Heating or cooling by tailor-made single heat transfer panels
- Heat recovery with Heat Exchange Systems from polluted water
- Process water cooling (0.5°C) near freezing point
- Direct food cooling near freezing point with ice water (0.5 ° C)
- Energetical innovative system solutions for direct cooling by ice water and chip ice
- Thermal Plate ice storage for the food and dairy industry
Analysis of pillow-plate solutions in industrial processes
In a first step, we specify the exact plant data together with the customer. We inspect the installation details, the system plans, measurement diagrams, as well as detailed design drawings. Through these insights, we answer the application requirements of any individual application or application detailed questions as such. If necessary, we also collect accurate performance and consumption data over a period of time.
In a second step, our experts evaluate all collected data. Accordingly, the customer receives our assessment on his project data. Especially with regard to optimizing the efficiency of the specified dimple plate. Also with regard to operational safety and potential energy savings, we give our use case recommendations.
Solution concept and Design
As a result of our analysis, the idea of the dimple plate solution concept and its design takes place. Consequently, we also look after and accompany the customer after delivery. As per our experience, there is a high need in many cases. Especially with regard to further optimization of product efficiency or operational safety. Necessarily, the mostly laser-welded dimple plates and its specification of installation is detected and successfully targeted. The main focus is on the optimal efficiency of the dimple plate (author is head of our R&D department) with respect to the guided pathes of the immersion dimple plates.
Plant and energy efficiency
Highest plant and energy efficiency are becoming increasingly important. These can only be successfully achieved, if the plant or product concept, as well as the fluid medium of the pillow plate are carefully and purposefully selected and used. In the change of numerous, alternative refrigerants, these fluids have to meet the future requirements from any ecological point of view. However, our primary task is to specify end products, which achieve high efficiency and high energy efficiency with good economy (author is head of our R&D department).