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Case Studies

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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

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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

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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

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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 – Tur
n 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

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