Dry Coolers and Chillers for Foundry in New Zealand

1. Installation context and requirements

MITA’s industrial equipment integrator customer has more than four decades of experience in the construction and integration of resin sand foundry machines and plants. It operates in more than 30 countries with advanced thermal management and energy recovery technologies.

In 2025, the company required an efficient cooling solution for one of its end customers: a foundry located in New Zealand. The specific requirement was for the cooling of a two-stage shell and tube heat exchanger used for the disposal of heat generated during the processing of sand molds. A critical factor was to optimize energy consumption by adapting system operation to local climatic conditions, with outside air temperatures of 27.5°C (dry bulb). The required outlet fluid temperature: 31°C (starting from 35°C).

2. Proposed solution

To meet these needs, MITA Cooling Technologies has provided a combined solution that includes:

• a V-shaped dry cooler, model MDC-V-5-1×4-EC, designed for cooling the two stages of the heat exchanger;
• an air-cooled chiller, model RWC 200/2 ax from Frigofluid, used to support cooling of the second stage of the exchanger during the hottest periods of the year.

This configuration ensured optimal temperature control, reducing energy consumption to the minimum necessary depending on seasonal weather conditions. Another unique aspect of the delivery was the adaptation of the supply voltage to 415V, in accordance with the plant engineering requirements of the installation site.

The entire selection and design process was supported by the technical services of MITA Cooling Technologies, with detailed analysis of the required thermal jump and optimal selection of cooling devices.

3. Results and key success factors

The implementation of this solution has ensured that the customer’s objectives in terms of efficiency and reliability have been achieved.

Some of the main results obtained are highlighted below.

• Energy optimization: the system adjusts the use of the chiller only during peak heat periods, reducing overall consumption.
• High performance in critical conditions: the dry cooler and chiller work in synergy to maintain stable operating temperatures even at high ambient temperatures.
• Reliability and technical support: close cooperation between MITA Cooling Technologies and the plant builder ensured efficient and customized delivery.

A key role in the success of the project was the pre-existing relationship between MITA Cooling Technologies and its Milan-based customer, which facilitated the definition of technical specifications and the integration of the solution into the foundry’s production process.