The energy audit is a process in which the energy demand of a building or industry is studied in a global approach. All the feasible alternatives are evaluated, one by one, for the reduction both of the energy consumption as the cost of the necessary energy.
Having dedicated more than 20 years to apply energy efficiency measures in the projects that we do, we have a wide practical experience in the ways of savings listed below.
A- Reducing energy demand :
– Optimize the use of natural lighting.
– Improved thermal insulation.
– Introduction of barriers that allow the sunshine in winter and avoid it in summer: deciduous vegetation, motorized parasols, slats with the right angle, motorized slides, etc.
– Reduction of consumption of domestic hot water.
– Training of staff.
B- Improving energy efficiency of equipment and facilities:
– Heat recovery.
– Thermal insulation of installations.
– Use of ligths of high performance.
– Optimization of combustion in boilers.
– Use of condensing boilers.
– Reduce the use of electrical resistances in support of heat pumps.
– Choice of high performance cooling equipment.
– Variation of air conditioning and heating set temperature with presence detection.
– Variable ventilation of buildings according to the concentration of pollutants.
– Power of heating and refrigeration according to the real necessities.
– Use of high performance luminaries and lamps.
– Lighting control systems: adjustment of luminous flux according to natural light and with detection of presence.
– Use of high efficiency motors.
– Regenerative braking systems.
– Reduction of voltage drops in electric circuits.
– Sizing of motors adapted to the real needs.
– Use of frequency inverters to control the speed of electric motors.
– Choice of maximum efficiency operating point for motors.
– Correct choice of pump operating point.
– Pumps with variable flow depending on demand.
– By-pass with input pressure measurement in pressure groups.
C- Study of generation alternatives :
– Cogeneration: combined heat and power production.
– Trigeneration: combined cooling, heat and power production.
– Thermal and photovoltaic solar energy.
– Biomass: pellets, use of waste (slurry, pruning, etc.)
– Geothermal energy: use of energy from the land.
D- Reduction of the cost of purchased energy:
– Reduction of reactive energy consumption.
– Correct choice of electric tariff.
– Negotiation of better offers with energy suppliers.