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    ppt_084.ppt ppt_084.ppt Presentation Transcript

    • Energy Conservation For Consumers, and large electric systems BY KHALED M.ABO-AL-EZ 3204220 PhD student ECE dept UNB
    • Overview
      • What is Energy Conservation?
      • Energy Conservation at the consumer side
      • Energy Conservation by solving power system problems using artificial intelligence techniques
    • Energy Conservation & Energy Efficiency
      • Reduce energy demand to reasonable minimum
      • Recover and re-use heat where possible
      • Use energy efficient equipment to supply remaining energy demand
      • Integrate energy systems where possible
      • Provide a means to manage use of energy
      • intelligent computer driven systems in the area of energy conservation of electric networks
    • How can energy efficiency be achieved or improved at the consumer side?
      • ‘ Good Housekeeping’ in facility operations
      • (for example the laundry machines with single phase motors which can be used as 3 phase and save a lot of energy)
      • Location, Design & Construction of energy saving devices.
      • Application of Technology
        • Designed-in for new-build facilities
        • Retro- / Refitting & refurbishment at added cost
    • Energy efficiency technology at the consumer side
      • Controls
      • Lighting Technology
      • Ventilation Systems
      • Heating Systems
      • Heat Recovery
      • Insulation
      • Pool Covers
      • Dehumidification
      • Building energy Management Systems (BEMS)
    • Controls
      • Occupancy sensors
      • Time switches & Optimizers
        • Timed control of heat demand & plant
        • Optimizer controls running time in relation to internal and external temperature
      • Thermostatic heating controls
        • Heating plant and radiator valves
      • Humidistat
        • Pool hall ventilation efficiency
      Payback < 1 yr
    • Lighting
      • Appropriate use of:
        • Tungsten filament lights – low-use areas
        • compact fluorescents – general areas
        • Tungsten halogen spotlights – display areas
        • Narrow diameter tubular fluorescents – corridors, staff areas
        • High pressure sodium floodlights – pool & sports halls (nb colour appearance)
        • Electronic starters
        • Reflectors
      Savings 8-50% Payback 1-6 yrs
    • Ventilation & Heating
      • Medium to high investment required
      • Variable ventilation
        • in relation to acceptable humidity levels (<65%)
      • 100% fresh air or Partial recirculation
        • The pros & cons?
        • Heat recovery applications
        • Variable speed fans (supply / extract)
      • High efficiency & condensing boilers
      • Modular boilers
      • Combined Heat & Power (CHP)
      Savings Up to 20% Payback 3-5 yrs
    • Heat Recovery
      • Run Around Coils
        • Versatile & suits retro-fit
        • Recovers up to 60% heat energy
      • Cross Flow Heat Exchangers
        • Ventilation or water applications
        • Up to 75% heat recovery
      • Thermal Wheels
        • Ventilation applications
        • Recovers up to 75% of heat
      Savings 20-40% Payback 3-5 yrs
    • Building Fabric & Insulation
      • Roof space reduction
      • Choice and position of glazing to minimise solar gain
      • Double glazing of windows to reduce heat loss
      • Thermal insulation of roof and wall spaces
      • Thermal insulation of pipe work & ducting
    • Pool Covers
      • Medium level of investment costs
      • Reduce convective and evaporative heat loss
      • Allow ventilation to be reduced
      • Combined with humidistat to enhance efficiency
      Savings 10-30% Payback 1.5 – 3 yrs
    • Dehumidification
      • (electric) Heat pumps
        • Collects sensible & latent heat as water first evaporates and then condenses, using reduced pressure and temperature
        • Transfers heat to incoming air
      • (gas-powered) Desiccant wheel
        • Absorbs moisture on ‘honeycomb matrix’,later evaporated & discharged to atmosphere
        • Reduces need to ventilate
      Savings Up to 40% Payback 3 – 5 yrs
    • Building Energy Management System
      • High investment costs
      • Central processor linked to sensors and controls around the building
        • Flow sensors
        • Temperature sensors
      • Operator-programmed & interactive
      • Seasonal and other ‘strategies’ for energy management
      • Reports aid monitoring and control
      • Requires training and technical support
    • INTELLIGENT SOLUTIONS TO ENERGY CONSERVATION PROBLEMS OF THE ELECTIC NETWORKS
      • Energy Conservation has become an important problem during the last years, in most of the countries.
      • The general belief is that it is economically better to reduce energy loss and waste than increasing costs in generation and transmission systems.
    • AI Techniques
      • Energy conservation is at the same time a technical and a conscience problem.
      • At the technical side, a number of problems can be successfully approached through intelligent systems for the purposes of energy management and conservation. Intelligent Techniques are having a growing impact on the electricity sector.
    • Intelligent System Applications in the electricity sector for electrical energy management and conservation
      • A new generation of intelligent computing techniques is entering the electricity sector.
      • These techniques include neural networks, genetic algorithms, fuzzy logic and expert systems.
      • In the electricity sector, intelligent techniques are being applied to :
      • load forecasting,
      • optimal capacitor placement,
      • economic load dispatch… etc,
      • and in many cases are outperforming traditional methods.
    • The areas of electricity sector for electrical energy management and conservation
    • Intelligent Techniques and their properties
    • Conclusions
      • Energy conservation should be a priority for everyone nowadays.
      • For large organizations, electrical energy savings are even more relevant because their bills are bigger and their usage is greater.
      • Finding ways to deal smartly with facilities and household equipments will have a great impact in Houses and buildings.
      • The effects of these intelligent computer driven systems will
      • The effect of AI methods will soon become clear in the area of energy conservation as they become commercial products.
      • References:
      • en.wikipedia.org/wiki/Conservation_of_energy
      • hes.lbl.gov
      • Figueredo, et. al., Intelligent Solutions to Energy Conservation Problems, http://www.ica.ele.puc/rio.br/publicacoes