Technological Research Centre of West Macedonia Grigoriadis Nick BEng MSc Civil Engineer

Knowledge Transfer  The MAIN Objective of the SMART EURE project is to transfer the existing know- how regarding renewable energy sources. The TRC realised from working together with the Project Partners that the German side has developed an appreciable know-how in the Fuel - Cells and in Photovoltaic systems sector. In comparison the Greek side has developed an expertive in developing technology in harvesting solar heat. Prior to the Krakow meeting a visit was organised to Saxony on the to exchange knowledge and methodologies.

Knowledge Transfer  At regular intervals articles are published in the local press with each one explaining the benefits of using a renewable source of energy use at a time.  A printed booklet – that will include all the articles- will be published and will be distributed among the citizens and the businesses of the Region at the end of the project.

TRC & Local Businesses  A methodology has been developed for saving energy by th local businesses, that are participating in the program. TRC visits the businesses and consults with them in many way to save energy. A report is then produced. The methodology is described below:

Methodology for saving energy in the local Businesses of West Macedonia.

 1. Correction of Power Factor (cosφ) The low power factor involves a penalty towards the bill of the Electricity Company. The correction cos(φ) can be achieved by capacitive compensation, using a parallel connection of capacitors. Based on the type of business and its needs a system of static capacitors, or automatically regulated capacitor banks can be proposed. ELECTRICITY

 2. Electric Motors Asynchronous motors are optimally designed to operate under maximum loading. Under true conditions though it is being observed that the loading of motors in industrial applications rarely exceeds 60% of maximum loading. The replacement of low efficiency motors with high efficiency is proposed. Such motors are designed for remaning highly efficient even in low loading in the order of 25% of maximum power.

ELECTRICITY 3. Μeasures for saving electricical energy  Switching off lamps in spaces that are not used (by using motion detectors), or use dimming lights to balance natural and artificial light depending on the hour of the day,  Control the temperature depending on thehour of the day by balancing the A/C operation,  Switching off motors operation when no loading is required for prolonged periods of time,  Control of loading of electric machines, so that the biggest demand is being maintained in low levels,  Design against oversizing the electric installations.

ELECTRICITY 4. Adjusting for improving electricity economies  Time shifting the demand using controls so that a reduction of the peak loading can be achieved,  More appropriate planning of secondary charges,  Importing a system that controls the charges with the use of time switches,  Frequent maintenance of all electrical installations mainly motors (alignment of the axes and charges, electrical contacts, lubrication of the bearings)

BOILERS 5. More economical operation of boiler systems  Maintain the solids diluted in the water to as low concentration as possible,  Introduce pressure levels that are as low as possible for the acceptable operation of the system,  Reduce the fluctuations of charge,  Frequent inspection of the air/fuel ratio to maintain the ratio at the optimum level,  Improve the heat insulation both in the boiler and the piping network,  Frequent maintenance of the boiler (i.e. cleaning the burner chamber, the tubes, regular cleaning and regulation of nozzles of the burner, maintain the chimney free of solid deposits).

OVENS 6. Improving the operation of Ovens  Regulation the operation of burners,  Inspection the overdosing of the air intake, through an analysis of waste gas,  Installation of control instruments for checking the combustion,  Maintain the heat exchangers surfaces clean,  Check and improvement of the insulation,  Cleaning of the burner chambers and chimneys,  Optimal recuperation of the heat through the usage of heat exchangers for introducing a warming up step.

HOT WATER & STEAM NETWORKS 7. Design for efficiency  Control the heat insulation of network,  Control the operation of steam traps in order to ensure the complete exploitation of the contained heat,  Installation of a steam trap system that recuperates and harvests heat released otherwise to the atmosphere.

COMPRESSED AIR 8. Harvesting the dispersed Heat  Control the efficiency of the compressor,  Control the supply of the compressed air so that it does not exceed the necessary operation air volumes,  Exploit of outlet temperature from the compressor,  Control the possible run outs.

INDUSTRIAL INSULATION 9. Reduce Energy Consumption  Control the losses and install insulation in building shell,  Various types of insulation are available to us today, thus giving us option in choosing the most suitable for each building use,  Optimisation of the insulation products during production with suitable materials (fibreglass, polyurethane, mineral wool, cellular glass, Calciumsilicat) and adjust the dimensions to enable easy installation.

RENEWABLE ENERGY SOURCES Proposals for the use of renewable energy sources with a parallel payback calculation:  Solar heat - Installation of solar collectors for introducing a pre-warming stage for the water,  Photovoltaic Cells - Potential subsidy from the state,  Heat pumps for exploitation of the geothermal energy,  Combined Heat & Electricity production (depending on the needs and means of businesses),  Solar Cooling, for replacing electrical A/C,  Biomass usage for heat production..