Regloplas AG

REGLOPLAS temperature control units with “ΔT control”: profitable and sustain-able

 Up to 50% cost savings thanks to technological advantages

"ΔT control" is the latest innovation for regulating the flow in temperature con-trol units. REGLOPLAS is the first manufacturer to offer temperature control units equipped with a frequency converter. The RT100 control compares the temperature of the inlet and the outlet and regulates the pump performance using a frequency converter in such a way that the difference between the two temperatures remains constant. Thus REGLOPLAS offers a technologically inno-vative product with which up to 50% of the previous energy consumption can be saved.

Temperature control units are standard equipment on die-casting and injection moulding machines. In both methods, the requirements for the components and the process con-trol in the manufacturing of products are very high. Temperature management for tools and their moulding components is of the utmost importance for zero-defect production.

Pump control as needed

REGLOPLAS now offers three different types of pump control, which are used depending on the application of the temperature control units: in addition to the existing flow con-trol and pump pressure control, there is now a third option – ΔT control.

In flow control, flow monitoring and a variable pump speed ensure that the temperature control medium flows constantly. The constant flow and temperature permit precise tem-perature control.

Traditionally, pump pressure control is used in bypass functions in which the pressure on the mould is limited. The speed of the pump is limited in such a manner that the outlet pressure does not rise above the maximum allowed. Therefore, energy no longer needs to be consumed by an overflow valve; instead, the excess energy – and thus money – can be saved. Pump pressure control is also used in multiple distributors: the constant pressure on the distributor enables precise control of each single distributor strand. The mutual influencing of the flow rates in the individual strands is minimised.

NEW: control using ΔT

With its innovative new control, REGLOPLAS has set a milestone for the entire industry. Until now, the ΔT value was used only in process monitoring. ΔT control now automati-cally ensures the minimum necessary flow rate. The deviations are monitored and the correct operating point is independently regulated. "In addition to the features generally expected of temperature control equipment – such as modern process management and ease of operation – energy consumption is coming more and more to the forefront. With our latest technology for ΔT control, which regulates the pump performance to a constant ΔT, energy can definitely be saved", explains Andreas Kuhn, Head of Research & Devel-opment at REGLOPLAS. Thanks to the automatic monitoring and control, as little energy as possible is consumed. Flow measurement is unnecessary because a constant ΔT regu-lates the process.

Simpler and less expensive

The temperature difference between the time of entry and exit of the temperature con-trol medium at the mould is dependent on the delivery rate, and therefore on the pres-sure and the flow rate generated. Now REGLOPLAS controls the temperature difference by adjusting the pump frequency. In future, customers no longer have to specify a flow setpoint; instead, they can directly enter the permitted ΔT. The flow then adjusts auto-matically according to the defined values.

This significantly simplifies process control for the customer, as flow measurement is no longer necessary. The pump speed is reduced if, for example, the required flow or pres-sure is low. As a result, the pump consumes less power. At a 20% reduction in speed, the pump consumes 50% less energy; at half the speed, it needs only 12.5% of the en-ergy. Overall, the ΔT control – as part of the optimisation of a temperature control sys-tem – provides significantly greater cost savings than if the pump motors are merely switched to an efficiency class of IE2/IE3.

Can be used universally or individually

The REGLOPLAS product range includes high-performance temperature control units for water or heat-transfer oil – with standard and special equipment, or custom designs – as well as different control systems and extensive accessories. REGLOPLAS units have a universal utilisation and application standard. However, all systems can be customised and adapted to customer needs, regardless of the market. ΔT control extends the range of options for pump control of the RT100 control system to supplement pump pressure control and flow control. ΔT control can be configured for any temperature control unit.

REGLOPLAS AG – a guarantee of quality and innovation

REGLOPLAS has specialised in the development and production of temperature control units for over 50 years. Customers benefit from the extensive expertise and great deal of know-how in terms of advice, development and the use of units. Headquartered in St. Gallen, Switzerland, the company guarantees advanced and reliable Swiss precision and quality. Although the company is globally active, the contact persons in Customer Service are not far away. Or own service technicians help customers with questions and prob-lems.