1. Pembroke college Opportunities for sustainable improvement BeateDirks Kayla Friedman Monica Pianosi PavniSahniKohliGassenSockalingumDaniel Curtis Facilitators: MagdaliniMakrodimitriKeven Le Doujet Tatiana V. Vakhitova
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3. A Vision for Sustainable Education The education experience incorporates the living environment – a lifestyle education Active participation by all members of college- faculty, students, staff, facility managers Transparency and targets for open communication, discussion, and motivation
4. Building Environmental Awareness “Once it gets measured, it gets done!” Chris Blencowe, Bursar of Pembroke College Installing an effective monitoring system Informing decision-making with the data Locate waste of resource Creating a low-carbon community
5. The monitoring system Locate processes with high energy consumption => Apply reusable current clamps to track the sources of high energy usage Technological origin => technological solution Behavioural origin => build environmental awareness Continuously control critical processes => Install stationary metering i.e. air-conditioning etc. College Administration Accommodation … Floor I | … Common room M M M M M
7. Environmental awareness campaign Spread the word!Pembroke is a ‘Green college’ => Attract “Sustainable” students Set up monitors in each building showing energy consumption Personalised feedback to staff and students
8. A low carbon community “Green is cool” Enhancing current students and staff commitments Organise a “Green race” Attract sponsors Regular meeting of the “Green club”
9. Greening the Heat - Research Listed buildings! Gas = 6067 Mwh/yr Gas = 54% CO2 emissions For buildings and per person, gas is by far the largest consumed utility. At peak, 6/7 gas used for heating, 1/7 hot water Meet the English Heritage/CIBSE 4 aims for sustainable historic buildings.
10. Heat – what can be done? College provided branded blankets/sweaters Foil behind radiators Phase change materials Tri-Iso or vacuum thin room insulations Additional insulation of heat distribution and storage Thermal imaging/surveys Heat Technologies Heat recovery systems Solar thermal Air source heat pumps Geothermal heat pumps CHP Radiant technologies
11. Geothermal Heat Pump 5kw/bore hole @ £5k One hole every 10m up to 100m deep 53 holes = 265kw @ £265k (1/4 load) Darwin College & Architecture have systems Water may not be hot enough for purpose Electricity needed for pumps
12. Inverter Combined Heat and Power Replace 1 boiler with 2 inverter-based 100kw CHPs that produce 250kw heat each @ £50k/engine (1/2 load) Peak electric use = 200kw+ = peak CHP production Modulate heat production based on use according to demand Possibility of excess electricity if use continues to decrease- ESCo opportunity? Gas dependence for life of boiler (~25 yrs)
13. New Radiant Technologies 90% efficiency for electric heating ‘Warm edge’ secondary double glazing Room temperature typically 2° cooler, or 12% reduction of power Single room controls Electricity dependent
