Case Studies
Biomass straw heating system
Sector - Agriculture, poultry
Region -Yorks
Challenge - Utilise a local sustainable, low carbon fuel source to manage fuel costs.
Solution - Automated straw heating system, fuel sourced within 4 mile radius.
Fuel type – Heston bale Straw & Miscanthus
Main components – Justsen /Reka 1MW
Scope – Turn key project
Annual energy usage – 2,100,000 kWh
Annual Carbon saving – 418,656
Wood pellet heating system
Sector - Agriculture, poultry
Region - Lincs
Challenge - New build site – Design an easy to manage low carbon heating system
Solution – Packaged plant room boiler system, district heating system serving multiple buildings, internal M&E including fan coil heat emitters & controls
Fuel type – Wood pellet
Main components – Hoval 975 kW boiler
Scope – Turn key project
Annual energy usage – 2,400,000 kWh
Annual Carbon saving – 478,464 kG
Waste wood heating system
Sector - Hotriculture
Region - Lincs
Challenge – Design & install a boiler system to utilise stable priced grade A&B waste wood within the existing space envelope, to minimise fossil fuel usage
Solution – Remove existing plant, alter building, install new 3MW waste wood boiler system and ancillaries.
Fuel type – Recycled waste wood
Main components – Justsen 3MW boiler
Scope – Turn key project
Annual energy usage – 18,000,000 kWh
Annual Carbon saving - 3,588,480 kg
Manure heating system
Sector - Agriculture
Region - Shropshire
Challenge – Utilise low value poultry manure as an energy source to meet stringent legislation surrounding manure combustion
Solution – Stand alone new building housing the manure store, automated Top Loader fuel feed and fluidised bed boiler system serving 6 No poultry houses. Underground pre insulated heating mains and internal poultry house fan coils systems, integrated controls
Fuel type – Poultry manure
Main components – FBC 750 kW boiler & automated Top Loader fuel feed system
Scope – Turn key project
Annual energy usage – 4,500,000 kWh
Annual Carbon saving - 897,120 kg
Virgin wood chip heating system
Sector - Agriculture
Region - Wiltshire
Challenge – Explore low carbon heating options for a new build site
Solution – Based on the good local availability of price stable virgin wood chip, design & install a wood chip heating system with pre insulated underground heating mains, internal fan coil heat emitters and integrated controls
Fuel type – Virgin wood chip
Main components – Herz Biofire 1MW boiler, ICI Caldare LPG 1MW
Scope – Turn key project
Annual energy usage – 1,500,000 kWh
Annual Carbon saving - 299,040 kg
AD plant - utilising rejected heat
Sector – Energy/power production
Region - Norfolk
Challenge – Utilise 500 kW of rejected heat from an existing AD plant to serve a proposed Heston straw bale drier rejected from a local straw fired power station
Solution – Divert rejected heat to a new underground heating mains serving a straw bale drier system.
Fuel type – Rejected waste heat from existing AD plant
Heat use – Straw drying plant serving local power station
Main components – mechanical pipework, heat exchangers, electrical & controls
Annual rejected heat mitigation – 3,200,000 kwh/yr
Packaged plant room (13x4m) Heating
Sector - Agriculture
Region - Cambs
Challenge – Displace existing fossil fuel heating with low carbon and more stable priced fuel
Solution – Packaged plant room boiler system, district heating system serving multiple buildings, internal M&E including fan coil heat emitters & controls
Fuel type – Pellet
Main components – Packaged 1MW plant room -pellet boiler
Scope – Turn key project
Annual energy usage – 1,600,000 kWh
Annual Carbon saving - 318,976 kg
Utilise rejected heat from existing AD plant
Sector – Food production / Agriculture
Region – S Lincs
Challenge – Utilise 500 kW of rejected heat from an existing AD plant to heat poultry facility approx. 350m away.
Solution – Divert rejected heat from AD plant engine room to a new underground heating mains terminating in a containerised heat station adjacent to the poultry facility. Distribute heat into the individual poultry houses via pumped circuits & =wall mounted finned pipe heat emitters.
Fuel type – Rejected waste heat from existing AD plant
Heat use – Modern poultry farm
Main components – Mechanical pipework, heat exchangers, electrical & controls
Annual rejected heat mitigation – 2,800,000 kwh/yr
Heat Recovery -Green herb drier
Sector – Food processing
Region – Suffolk
Challenge – Increase efficiency, reduce fuel cost and carbon from an existing green leaf LPG fired herb drying facility.
Solution – Design & install an efficient heat recovery system around the existing LPG belt drier system
Fuel type – Reduce LPG usage
Main components – Hoval cross flow air to air heat exchange matrix, housed in bespoke cabinets. Ducting & exhaust system, filtration & controls
Scope – Turn key project
Annual energy Savings – 93,750 Litres LPG
Annual Carbon saving - 21,562 Tonnes
Multi-site Biomass Straw Heating System
Sector - Agriculture, poultry
Region -Lincs
Challenge – Reduce LPG costs and carbon emissions for a large scale poultry producer across 4 No. separate farm sites. Reduce reliance on unstable fossil fuels
Solution – 4 No. Automated straw heating system & district heating networks serving 24 No. buildings total, utilising home produced straw fuel
Main components – 4 No. 1.6MW Justsen boilers/Reka straw feed & chopper systems , pre insulated underground pipework, shed internal fan coil heat emitters.
Scope – Turn key project, coordinating with main building contractors, electricians and controls engineers.
Annual energy usage – 8,400,000 kWh
Annual Carbon saving – 1.824 T/yr
