Frequently asked questions
Straightforward answers about dimpled plate jackets, pillow plate exchangers, and cooling vessels for viscous chemical processing.
Thermodynamic Engineering
Effective: January 1, 2025
These Terms govern your use of Dimplecolors.com and all related products, including dimpled plate thermal jackets, pillow plate heat exchangers, and industrial cooling vessels. By accessing this site, you agree to the conditions below.
All heat transfer equipment is engineered for industrial chemical processing. You must ensure compatibility with your specific media, pressure, and temperature requirements before installation.
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Laser-welded pillow plate and dimple jackets deliver measurable gains in heat transfer rate, pressure rating, and cleanability — three factors that matter most in viscous chemical processing.
Dimpled plate geometry exposes 40% more surface area to the process fluid than half-pipe coils. For a 2,000-liter reactor processing 50,000 cP polymer melt, that translates to 18 minutes saved per cycle — verified across 12 field installations.
Each dimple and pillow channel is fusion-bonded with a 1.2 mm penetration weld. No gaskets, no threaded fittings inside the jacket. The DPT-400 series holds 16 bar at 300 °C without weeping — a failure mode common in clamped coil assemblies.
Smooth internal surfaces and absence of stagnant zones allow CIP cycles to reach every weld seam. A specialty resin producer reduced cleaning downtime from 4 hours to 45 minutes after switching from pipe coils to dimple jackets.
The PPH-200 pillow plate exchanger fits into a 600 mm × 800 mm footprint — small enough to slide into existing structural steel without crane lifts. One chlor-alkali plant replaced three shell-and-tube units with a single PPH-200 on the same foundation.
Every ICV-6000 vessel carries a U-stamp. Third-party hydrostatic testing at 1.3× MAWP is standard. No other dimple jacket manufacturer in India offers full code compliance as a standard option.
Repeat orders from three pharmaceutical API manufacturers and two agrochemical batch processors. Reference audits available on request — including thermal performance data and maintenance logs.
Straightforward answers about dimpled plate jackets, pillow plate exchangers, and cooling vessels for viscous chemical processing.
A dimpled plate jacket uses a pattern of raised dimples to increase surface area and turbulence for heat transfer, typically welded onto a vessel wall. A pillow plate heat exchanger consists of two metal sheets laser-welded in a pattern and then inflated to create flow channels. Pillow plates are more compact and can be retrofitted into tight spaces, while dimpled jackets are often integrated directly into reactor vessels for batch processing.
Yes. Both the DPT-400 dimpled jacket and the PPH-200 pillow plate are designed for viscous media. The dimpled geometry creates turbulent flow even at low Reynolds numbers, which prevents boundary layer buildup and maintains efficient heat transfer. For extremely viscous batches, the ICV-6000 cooling vessel includes internal baffles that ensure uniform temperature distribution throughout the product.
Standard construction is 316L stainless steel for corrosion resistance and thermal cycling durability. For specific chemical compatibility, we also offer Hastelloy C-276 and titanium options. All laser welds are fully penetrated and helium leak-tested to ensure zero leakage under pressure.
We provide a technical questionnaire covering process fluid properties, operating temperatures, pressure, batch volume, and desired heating/cooling rates. Based on that data, our engineers calculate the required surface area using validated thermodynamic models. Contact us to start the sizing process.
Lead time depends on complexity and current shop load. Standard DPT-400 jackets ship in 4–6 weeks after engineering approval. Custom pillow plate exchangers and large ICV-6000 vessels typically require 8–12 weeks. We offer expedited production for urgent projects.