Spain · Ground-Mounted Photovoltaic Power Plant

Customized Panel Radiators for the MULA PV MULA II Solar Power Plant

For the COBRA Group’s MULA PV MULA II project in Spain, TengQi Technology supplied customized transformer panel radiators for Sieyuan main transformers serving a ground-mounted centralized photovoltaic power plant. The scope combined radiator configuration, transformer interface matching, oil-channel adaptation, outdoor corrosion protection, technical documentation, and delivery coordination for the project’s installation and grid-connection schedule.

Project Overview

MULA PV MULA II is an outdoor renewable-energy infrastructure project located in Spain. Its main transformer system required radiator equipment suited to photovoltaic plant conditions, where reliable transformer cooling, installation coordination, and surface protection are all relevant to project execution.

Jiangsu Tengqi Electric Power Technology Co., Ltd., operating under the TengQi Technology (TQT) brand, developed the panel radiator package around the transformer structure, thermal-management requirements, site exposure conditions, and construction milestones. The project illustrates how transformer radiator selection for solar power plants must account for both equipment integration and the practical demands of an outdoor installation environment.

Project Configuration

Environmental Conditions and Design Considerations

The project site presents typical Mediterranean outdoor conditions. High summer temperatures and dry weather increase the importance of effective heat dissipation for oil-immersed transformer systems. Strong ultraviolet exposure and dust can also place additional demands on external coating systems and routine equipment maintenance.

In addition to environmental exposure, the radiator package needed to align accurately with the main transformer’s connection interfaces and overall assembly arrangement. The project also required coordination between radiator manufacturing, technical documentation, site installation, and the planned grid-connection timeline.

• High-temperature outdoor operating conditions for the main transformer system
• Strong UV exposure and dry, dusty surroundings
• Customized interface correspondence with the transformer body
• Specified corrosion-protection and coating requirements
• Delivery and installation coordination supporting the construction schedule

Customized Transformer Radiator Solution

Radiator Structure and Oil-Channel Adaptation

TengQi Technology configured the PC2800(2400)-25(3)/520 panel radiators in accordance with the main transformer’s integration requirements. The radiator panel profile and internal oil-channel arrangement were adapted to connect with the transformer oil circulation and heat-exchange requirements. Corresponding transformer interfaces were incorporated into the design to support efficient site installation and total assembly coordination.

Outdoor Composite Corrosion Protection

To address the project’s outdoor exposure conditions and specified corrosion-protection requirements, the radiators used a composite coating system consisting of hot-dip galvanizing and a topcoat layer. This protection route combines a metallic coating with an external paint film to enhance the radiator surface’s suitability for UV exposure, dust, moisture, and other outdoor corrosive factors.

Coating suitability, corrosion-category assessment, inspection methods, and acceptance criteria are subject to the final project technical agreement, customer specifications, and applicable quality verification documents.

Manufacturing and Project Coordination

For this renewable-energy transformer application, radiator structure design and surface-protection requirements were managed within a coordinated manufacturing process. TengQi Technology linked product design, manufacturing, quality verification, technical documentation preparation, and delivery support around the confirmed project requirements.

This coordinated approach supported alignment between the radiator package and the main transformer assembly process. According to project feedback, the supplied radiators met the project’s needs for interface matching, installation coordination, delivery support, and technical documentation, contributing to the progress of grid-connection acceptance activities.

Key Considerations for Outdoor Solar Transformer Cooling

The MULA PV MULA II project demonstrates that panel radiator selection for photovoltaic power plant transformers should extend beyond individual component dimensions. A practical solution needs to consider the relationship between transformer thermal design, outdoor climate, interface arrangement, corrosion protection, installation conditions, and project schedule.

1. Confirm radiator quantity and configuration against the transformer thermal design.
2. Verify interface dimensions, connection orientation, and on-site installation conditions.
3. Assess local temperature, humidity, UV exposure, dust levels, and corrosive environmental factors.
4. Define coating systems, film thickness, corrosion-protection requirements, and acceptance criteria.
5. Coordinate sampling, quality inspection, packaging, transportation, and installation requirements.
6. Align delivery planning with transformer manufacturing, EPC construction, and grid-connection milestones.

Professional Support for Transformer Radiator Projects

As a manufacturer focused on panel radiators for oil-immersed transformers and related thermal-management services, TengQi Technology supports project-specific product selection, design coordination, sample development, customized manufacturing, quality verification, and delivery services. Material selection, structural parameters, coating performance, testing scope, delivery timing, and after-sales arrangements are determined according to the confirmed technical agreement and order documentation for each project.