Saving energy is not so difficult. We have compiled questions and answers for you, which who how energy can be used more efficiently in the various consumers in your bakehouse. Maybe they will inspire you.
Do you preheat your ovens at the right time? Do you bake products that require roughly the same temperature in succession? Is your flue vent set properly? Organization
- Do you preheat your ovens at the right time? Avoid unnecessary warming and idle times by turning on your ovens at the correct time, and loading them in a timely fashion.
- Do you switch your systems to energy-saving mode or turn them off at the proper time? Energy-savings modes result in savings after about 30 minutes of idle time.
- Do you bake products that require roughly the same temperature in succession? Monitor your baking sequences to ensure that you minimise temperature variations from one baking operation to the next.
- Do you limit steam use to only the amount necessary for your baked product? Steam injection takes nearly a quarter of the oven's energy. In ovens without fixed steam dosing, the amount of steam is determined by the baker.
- Do you open your baking oven doors infrequently and only for short periods? All bakery staff should be instructed to avoid opening oven doors, where possible.
- Are the steam systems decalcified at the recommended intervals? Turning water to steam requires a great deal of energy. This energy requirement increases significantly if the transmission is blocked by calcium deposits.
- Is your flue vent set properly? The correct values are listed in your oven's MIWE manual.
- Do you clean your burners regularly and carry out annual maintenance? That ensures both minimal waste gas emissions and low consumption. Do you clean the burner's air supply area while the intake is open (3 times per year).
- Do you inspect the door seals regularly? Defective seals should be replaced immediately.
- Is your unit located as far as possible from sources of cold (open windows, etc.)?
Cooling and refrigeration systems
Do you store cooled products with similar cooling requirements together? Do you turn off unneeded cooling units? Do you regularly clean the condenser cooling fins? Organization
- Do you monitor cooling temperatures and adjust them according to your current requirements? The manufacturer's recommendations should be followed as closely as possible.
- Do you store cooled products with similar cooling requirements together? When possible, avoid cooling or freezing products that are hot from the oven. Baked goods should be allowed to air cool first when ever possible.
- Do you make optimal use of your cooling surface? Avoid partial use and move products stored in several units into one unit where possible.
- Do you turn off unneeded cooling units? This results in energy savings after only 12 hours.
- Only store products in your cooling units that truly require cooling.
- Do you turn on the lights in your cooling systems only as needed? Lighting in cooling systems increases energy consumption in two ways: due to the power consumption of the lamp itself, and second due to the heat emitted by the light, which increases cooling requirements.
- Do you open cooling units only when needed, and as briefly as possible? During opening, cold air escapes and warm, moist air enters the unit (resulting in ice formation).
- Do you turn off refrigerated display cases when your shop is not open? Do you make sure open cooled areas remain covered?
- Do you regularly clean the condenser cooling fins?
- Do you regularly thaw your evaporator?
- Are the condensers located in a cool, dust-free and accessible area? When heat emission is hindered, for example due to flour dust, the units can overheat.
- Have you installed cold conservation curtains in front of of the entrances to your cooling units?
- Do you inspect the door seals regularly? Defective seals can substantially increase energy consumption.
- Do you avoid direct sunlight on your cooling units? Even light emits heat, which can affect your cooling units.
- Do you carry out regular maintenance on your cooling units (refrigerant levels, EN 842 inspection, ensuring the unit is free of ice)?
Do you fully switch off any unneeded devices? Are your staff trained in energy savings? Are your dish washers and washing machines equipped with hot water connections? Organization
- Do you turn on your exterior and display lights only when needed? Time-delay devices can be a useful addition.
- Do you fully switch off any unneeded devices? Avoiding the use of stand-by mode can result in substantial savings.
- Do you turn off ventilation and pressurised air systems when they are not in operation?
- Are your staff trained in energy savings? Affix energy-saving instructions onto your machines.
- Have you replaced regular light bulbs with energy-saving ones? This will pay off sooner than you might think.
- Do you use specular louvres equipped with electronic ballasts? Specular louvres are a worthwhile investment for areas that require high luminous efficiency over long periods (mainly production rooms).
- Are your dish washers and washing machines equipped with hot water connections? Industrial dish washers without hot water connections use substantially more energy. These units can also make optimal use of warm water from waste heat exchangers.
- Have you considered switching from electric hot water generation to gas or oil heating?
- Do you regularly decalcify your water heater?
- Do you know your monthly reactive current costs? Depending on circumstances, a reactive current compensation might be useful.
- Are any of your colleagues interested in forming an energy supply cooperative? Large-scale power users can negotiate lower energy rates.
- Could you make use of electricity agreements reached by your professional organisation?
- Does your electricity use exceed 25,000 kWh / year? If yes, your tax consultant should check whether you might benefit from an ecotax refund application.
Room heating/warm water
Do you regularly decalcify the warm water heater? Are the heating and warm water pipes adequately insulated, and is all pipe insulation intact? Organization
- Do you carry out regular maintenance on your heating unit? The burners benefit from annual maintenance.
- Do you reduce the temperature of warm water as much as possible? However, you should carry out regular quick-heating to prevent the formation of legionellae.
- Do you regularly decalcify the warm water heater? Do you switch off the circulation pumps in the hot water circuit when you don't require hot water for periods of several hours?
- Do you completely turn off the heating circuit pumps when heating is not required?
- Have you installed circulation pumps in the warm water circuit? If you have not done so, installing the pumps is only useful when you are carrying out a larger overhaul of your heating system.
- Are the heating and warm water pipes adequately insulated, and is all pipe insulation intact?
- Do you use a heating unit that is state of the art? If not, it's worth checking if a modern system could result in substantial savings.
- Are all parts of the building properly insulated?
- Does the burner have the correct performance rating? Replacing a burner - or even just ensuring optimal nozzle fitting - can significantly reduce fuel requirements.
- Is the size of your heating unit boiler suited to your needs? Installing a smaller boiler can save you money, which can then be invested in a heat recovery system or in a solar thermal unit that will help supply you with hot water.
- Has the flow of your heating unit been optimised (for example, with electronically regulated pumps)?