Week 4.docx

Carbon Management Plan at UoN Week 4 Challenges: The university is consistently expanding – developing more buildings and campus expansions More intensive energy research – science and engineering Decarbonising heat – requires reliance on gas Greater requirements on cooling/heating/ventilation in b...

Carbon Management Plan at UoN Week 4 Challenges: The university is consistently expanding – developing more buildings and campus expansions More intensive energy research – science and engineering Decarbonising heat – requires reliance on gas Greater requirements on cooling/heating/ventilation in buildings Progress to date: CO2 emissions by campus – 2009/10 emissions were 68000t. By 2020 total emissions were 41000t. Science-based targets – 63% reduction expected by 2030 2030 Carbon management plan: Demand reduction Size and shape.(space utilisation!) Turn things off/ or down (Avoid or remove!) Thermal insulation, reduce heat demand of our buildings. Improve energy efficiency Replacement of engineering assets pumps, fans, chillers, boilers, etc., via CBRP. (£10m per year investment) Refurbishment of spaces, windows, heating/ cooling and lighting Low carbon energy generation Power by large scale solar PV and possibly wind turbines. Heat, move away from gas to electric heat pumps following investment in thermal insulation as above. Offsetting Used to ‘offset those emissions that would otherwise be difficult to remove, prioritising additionally and permanence Past and future projects: Fume Cupboards A standard Fume Cupboard operating 24 hrs a day 7 days a week uses a total of 38,000kWh of natural gas to provide heated replacement air into the lab and 11,000 kWh of electricity a year to power the supply air and extract fans Annual energy cost over £3,000 and annual carbon emissions 9 t CO2 Savings from this = Can the fume cupboard be turned off over night and weekends? 75% saving Fixed reduction in face velocity eg 0.5m/s to 0.4 m/s subject to risk assessments. 20% saving Full variable volume FC extract system with auto sash closer. 60 to 75% saving Main Boiler House CHP (combined heat power) on SB campus 800kW CHP Total installed cost of £1.35m Annual fuel cost saving £260K Annual Carbon saving 1,150 t CO2 (Based on 2017 carbon emission factors) no carbon savings at todays carbon factors! CHP - CHP is the simultaneous production of heat and electricity from a single fuel source, in this case Natural gas. Unlike a conventional power station the heat is used which enables overall significant energy/ carbon savings. There is also less waste heat and more useful energy compared to conventional power stations Replacement chilled water system at medical School Installation of high efficiency chilled water plant to replace steam absorption units. 3 off units will give an total installed duty of 2MW. Total installed cost of £1.45m Annual fuel cost saving £276K Annual Carbon saving 933 t CO2 1000m2 Photo Voltaic Array at SB vets school Maximum output of 145kW with estimated annual yield of 127,115kW. Total installed cost of £200K Annual fuel cost saving of £18K. Annual Carbon saving 68 t CO2 (2017) now 24 t CO2 due to reduced UK power carbon emission factor Planned 500kW Wind Turbine on SB Proposed installation adjacent to our dairy centre, subject to planning. Annual yield of 1,600,000kWh or approx’ 15% of the site electrical consumption. Installed cost £1.6m Annual fuel saving £232K. Annual Carbon savings 754t CO2 (2016) now 306 t CO2 due to reduced UK carbon emission factor. Planned 1.4MW PV Array on SB 3,040 panels of total surface area 6,570m2 Requires approximately 4 acres land Peak power likely to be 1300kW Annual yield of around 1,278,000kWh 15% of total SB campus electrical use Annual saving around 245 t CO2 and £185,000 Installed cost £1.4m Planned replacement district heating on UP campus Proposal for up to £18m investment to replace complete system. Gas fired boiler plant supplemented with renewable energy source heat pumps. Annual carbon savings up to 2,995 t CO2. Future building fabric improvements to enable full conversion to electric heat pumps with zero carbon heating!