Renewable Heat Incentive
Biomass Suppliers List
Biothermal Energy

Biothermal Energy

Mainstream industrial woodwaste-fired heating equipment tolerates a wide range of fuel types, and is usually equipped with buffer storage silos for continuous unattended operation. Stand-alone industrial composite board and wood burning installations are frequently linked to manufacturing output as a means of on-site waste management. Where sites are able to use their own derivative biowaste to fuel an on-site heating system, they are eligible for registry with the Biomass Suppliers List (below).

Surplus heat is conventionally rejected to atmosphere outside the season to prevent accumulation of unprocessed material. This may also partly be avoided by palletisation - typically reducing space requirements by two-thirds – whilst also conserving fuel stocks for retailing or winter use. Our Gallery page shows a 260 kW Dove Thermal wood waste heating installation at a Midlands furniture factory.

Micro CHP

Biothermal energy technologies are straightforward and well established, to the extent that generous funding incentives set-up to encourage and promote renewable energy concepts are being gradually reeled-in. The lower end of the combined-heat-and-power market is more difficult, given disproportionate ratios between thermal and electrical outputs. While Stirling Cycle engines have practical efficiencies of some 30%, a typical chp boiler for the domestic market delivers just 1 kWe for a thermal rating of 25 kWt.

For any chp scheme to be effective, there must be a strong, continuous base load requirement for the heat produced as a by-product of electrical generation. This has proved untenable for most domestic economies. While small engine-generators with electrical outputs in the order of 5 kWe have been developed, their operational economy when built into a packaged chp boiler has yet to be demonstrated.

There is an inverse relation between boiler- and engine-driven systems: in the former, boiler heat output governs generating capacity, while in engine-generator systems electrical demand governs heat production. Flexible micro chp is engine-based: practicable machines start at about 15 kWt output as waste heat from engine generators producing 5 kWe.

Renewable Heat Incentive

Dove Thermal Engineering has designed and built several wood waste heating plants, and associated factory heating installations. We have helped our clients register with the Renewable Heat Incentive (RHI), and gain self-supplier status on the Biomass Suppliers List (BSL). We follow-through and support the making of returns under the schemes, and – given they are subject to peremptory audit - ensure that the correct reporting procedures are maintained.