01
Surface collection
SECTA treats selected external surfaces as low-temperature thermal collectors, gathering available energy from solar gain, ambient conditions, rainfall effects and the near-surface ground environment.
Surface Energy Collection Thermal Accumulator
Turning useful surfaces into useful energy.
SECTA is an engineering-led approach to harvesting low-grade thermal energy from external surfaces and making it useful through controlled accumulation, hydraulic separation and water-to-water heat pump integration.
Collect. Accumulate. Integrate.
A finished surface can become part of a wider engineered energy system — but only when the design, controls and responsibility boundaries are properly defined.
About SECTA
SECTA has been developed for projects where the external surface is already important — a driveway, courtyard, pathway, public realm, service area, podium, car park or specialist resin-bound finish — and where that same surface could quietly do more.
02
Thermal accumulation
The collected energy is not left to chance. A Ground Array Accumulator provides a controlled interface between the surface collector and the building-side energy system.
03
Engineered integration
SECTA is not a resin surfacing trick. It is a coordinated system philosophy involving hydraulic design, controls logic, heat pump integration and commissioning discipline.
We do not ask surfacing contractors to become heating engineers — and we do not ask heating engineers to guess the surfacing.
SECTA sits at the interface, where the clever work normally gets lost between trades.
An engineered route from surface to plantroom.
- For specifiers: a credible low-carbon design option that can be considered early, before the external works are fixed and the opportunity disappears.
- For developers: a way of giving functional external surfaces an energy role without turning the building elevation into a plant catalogue.
- For surfacing partners: a defined technical boundary, so workmanship and finish quality are protected while the energy design is owned by competent engineers.
- For HVAC designers: a surface-source energy input that can be integrated into a sensible water-to-water heat pump and low-temperature heating/cooling strategy.
What makes SECTA different?
The difference is not simply the pipe beneath the surface. The difference is the design responsibility around it.
Design-ledEvery project starts with suitability, purpose and system boundaries — not a product pushed into the ground and hoped for.
Low-temperature thinkingSECTA is built around modern low-temperature heating and practical source-side heat pump performance.
Clear interfacesThe surface, manifold, accumulator and building-side plant each need clear ownership and coordination.
Practical engineeringExperience matters. The system has to be buildable, commissionable and understandable after the brochure has gone in the bin.
Built for serious project conversations.
SECTA is intended for architects, landscape designers, developers, local authorities, resin-bound surfacing specialists and M&E professionals who want to explore whether an external surface can become part of a credible heating and cooling energy strategy.
Developed from building-services experience.
SECTA has been shaped from long-standing HVAC, hydronic and heat pump design experience, with a practical understanding of what happens when an attractive concept meets real groundworks, real plantrooms and real commissioning.
The result is a surface energy approach that respects traditional engineering basics: flow, temperature difference, controls, heat transfer, access, responsibility and maintainability.
New idea, old-fashioned discipline. That combination tends to keep the wheels attached.
The SECTA principle
Use the surface that is already being built. Collect what the environment offers. Accumulate it sensibly. Then integrate it through competent HVAC design rather than marketing optimism.
Talk to SECTA early.
The best time to consider SECTA is before the external surface design, drainage strategy, plantroom concept and heat pump approach are fixed. Early advice costs less than late excavation — a truth known to every engineer with muddy boots.