Post on 31-Dec-2015
The Project
• Take a previously untapped source of heat from our CHP Plant and use it to provide most of the heat required for our new Dalhousie building.
• 3 heat exchangers were fitted in the lubricating oil circuit of the 3 Jenbacher CHP engines providing low grade heat at 47/37 deg C flow and return temperatures.
• Run over 150 metres of 125mm ID flow and return Pipe 2000 plastic pipework between the Boilerhouse and Dalhousie Building.
• Plant within the Dalhousie building was oversized to accommodate the lower design temperatures.
Other Environmental Features
• Air conditioning in only one Lecture theatre controlled by CO2 detector
• Natural ventilation in all other rooms• Solar shading• Enhanced U Values• Lighting control systems• Inverter drives on air handling plant• Power factor correction
Innovation
1976 – District heating scheme
1997 – 3 MW combined heat & power plant
1998 - Free Cooling Air Blast Radiator System
2000 – Building Energy Management System
2001 – Micro CHP
2007 – Absorption Chiller (Tri-Generation)
Determination to overcome barriers
• Additional space requirements for oversized plant.
• Additional financial costs of approx £100,000.
( Life cycle costing exercise )
• The “Risk Factor” - It may not work.
Teamwork
Building User group
Finance
M&E Consultants
University Engineers
Project Q.S .
Project Architect
Project Manager
Headline Benefits
• 60 % of teaching block heated from VLTHW Circuit.
• Financial savings of £15,000 p/a
• Annual CO2 savings of over 100 tonnes p/a from VLTHW Circuit alone.
Additional Future Benefits
• Carbon Standard
• Climate Change Declaration
• Carbon Management Programme
• Carbon Reduction Commitment
Not only CHP
• Wind Turbine
• Ground Source Heat Pump
• Solar Panel Installation
• Heat Recovery
• Voltage Optimisation