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Why solar hot water for commercial projects

Solahart commercial solar hot water systems harness solar energy to reduce reliance on conventional heating sources and lower operating costs. Designed for large-scale applications, these systems can be configured to suit a wide range of building types, climates and demand profiles.

They are commonly deployed as part of a broader hot water system, providing solar pre-heating while working alongside booster technologies to ensure a consistent supply.

Benefits:

  • Reduces energy use and operating costs
  • Uses renewable energy to support environmental performance targets
  • Scalable to suit small and large applications
  • Flexible system design to suit site conditions
  • Proven technology for commercial installations

System Overview

Solar collectors capture heat from sunlight and transfer it to water or a heat-transfer fluid. This energy is then stored in tanks and distributed across the building’s hot water network as required.

In commercial applications, systems are typically configured using multiple collectors and storage tanks connected together, allowing solar energy to be captured, stored and used efficiently throughout the day.

Designed for commercial applications

Solar hot water systems are designed to meet the demands of applications where hot water use is continuous and high volume.

Typical applications include:

  • Hotels and accommodation
  • Healthcare and hospitals
  • Commercial buildings
  • Industrial and process applications
  • Sports and aquatic facilities

Systems can be scaled to suit a wide range of project sizes, from small rooftop installations through to large multi-array systems.

Flexible system configuration

Commercial solar systems are highly adaptable and can be configured to suit site constraints, available space and performance requirements.

Common system configurations include:

  • Collector arrays installed in series or parallel to maximise solar gain
  • Multiple storage tanks connected together to increase capacity
  • Split systems with collectors located on the roof and tanks installed at ground or plant level
  • Thermosiphon systems where tanks are mounted with collectors for smaller or distributed applications

This flexibility allows systems to be designed around building layout, structural constraints and installation access.

Key System Components

These systems are made up of several integrated components, each designed to maximise performance, efficiency and reliability.

Solar Collectors

Solar Collectors capture solar energy and act as the primary heat source for the system. Collectors are typically installed on rooftops and can be configured in single or multiple arrays depending on the scale of the project.

Collectors can be connected in parallel to increase system output and are designed to perform across a range of climatic conditions.

Explore Solar Collectors

Storage Tanks

Store heated or pre-heated water for use throughout the building. Commercial systems often use multiple tanks manifolded together to increase storage capacity and provide flexibility in system design.

Tanks can be installed on rooftops or within plant areas and may be configured to work in conjunction with booster systems to ensure a consistent supply of hot water.

Explore Solahart Tanks

Pump and circulation systems

Used in split system configurations to move water or heat transfer fluid between collectors and storage tanks. Pump sizing and pipework are designed to suit the system layout and ensure efficient energy transfer.

These systems help regulate flow, optimise performance and maintain consistent operation across collector arrays and storage.

Boosting and control

Provide additional heating when required and help maintain consistent hot water temperatures. Systems can incorporate electric, gas or heat pump boosting, depending on the application.

Control systems regulate system operation and manage when boosting is activated.

Performance and Efficiency

Solar hot water systems are designed to maximise the use of available solar energy while reducing reliance on conventional heating sources.

System performance depends on collector sizing, solar availability and storage capacity, with the ability to store and use solar energy helping improve overall efficiency.

Well-designed systems can significantly reduce energy consumption in applications with consistent daytime demand.

Installation and design considerations

System performance is influenced by a range of design factors, including:

  • Collector orientation and tilt
  • Available roof space
  • Pipe layout and insulation
  • Distance between collectors and storage
  • Integration with existing hot water systems

Systems can be tailored to meet local climate conditions and building requirements, ensuring optimal performance across different environments.

Reliable hot water across all conditions

Solar hot water systems are designed to operate as part of a complete hot water solution, ensuring consistent performance under varying conditions.

During periods of low solar input or high demand, integrated boosting systems maintain required water temperatures and ensure continuous supply.

This approach allows solar to serve as the primary renewable energy input while boosting systems support performance when needed.

👉 Explore hybrid solar and heat pump systems

 

Design a solar hot water system for your project

Our team works with consultants, engineers and project stakeholders to develop systems tailored to your site and requirements.

👉 Request a consultation or speak to our team