Advantage of Pillow Plate Heat Exchanger SYNOTHERM® over other heat exchanger
In the engineering of tanks and GMF-plants, the space requirement of the components plays an important role. The main advantage of the Pillow Plate heat exchangers compared to conventional coil heat exchangers is that there can be a space saving of up to one third. This reduces the sizes and costs of your tanks and provides more space for the working process.
Figure 1: According to J. M. Tran, M. Piper und E. Y. Kenig (2014), Experimental Investigation of Convective Heat Transfer and Pressure Drop in Pillow Plates under Single-Phase Through-Flow Conditions, Chem. Ing. Tech. 2015, 87, No. 3, 226–234;
The characteristic pillow structure of the SYNOTHERM® plate heat exchanger allows for a strong flow of the medium through the exchanger and leads to a high heat transfer coefficient. As Figure 1 shows, Pillow Plate heat exchangers have a higher heat transfer coefficient (in W/m²K) depending on the flow rate (in kg/m²s) than tube coil heat exchangers. This causes a higher overall heat transfer coefficient.
The VDI heat atlas  indicates an overall heat transfer coefficient of 150 – 1200W/m²K for tube bundle heat exchangers. For double-tube heat exchangers, this coefficient is only between 300 – 1400W/m²K, whereas plate heat exchangers have an overall heat transfer coefficient of 1000 – 4000 W/m²K! As the following basic formula  shows, less heat transfer area is required to transfer the same power . Consequently, the SYNOTHERM® plate heat exchangers save space, weight, material and costs.
The compact, lightweight and pressuretight design ensures a long and safe working life of your line. The strength of SYNOTHERM® plate heat exchangers significantly reduces the risk of mechanical damage or misshaping compared to coil heat exchangers. This reduces the risk of a line breakdown with the associated costs. The plate heat exchangers are fixed to the tanks by the fixing strips.
The maintenance costs for SYNOTHERM® plate heat exchangers are significantly lower compared to tube heat exchangers. The flat and smooth surface can be cleaned easily and quickly with a steam jet or highpressure cleaners, resulting in your process being back in operation quickly.
 J. M. Tran, M. Piper und E. Y. Kenig (2014), Experimental Investigation of Convective Heat Transfer and Pressure Drop in Pillow Plates under Single-Phase Through-Flow Conditions, Chem. Ing. Tech. 2015, 87, No. 3, 226–234;http://dx.doi.org/10.1016/j.cherd.2015.03.031
 Gesellschaft, VDI (2013), VDI-Wärmeatlas. 11. Aufl.. Wiesbaden: Springer Berlin Heidelberg, S. 85-87
von Böckh, P./Wetzel T. (Hrsg.) (2015): Wärmeübertragung, Grundlagen und Praxis, 6.Auflage, Karlsruhe, S.9