Difference between revisions of "Energy efficiency in baby food"
From Efficiency Finder
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===== Space heating ===== | ===== Space heating ===== | ||
− | Low-cost / short term opportunities | + | |
− | Energy Saving Opportunity | + | {| class="wikitable" |
− | 1. Use heat only when area is occupied | + | !colspan="6"|Low-cost / short term opportunities |
− | 2. Set thermostats to minimum for comfort | + | |- |
− | 3. Minimise loss of hot air | + | | ''' Energy Saving Opportunity ''' |
− | 4. Clean and effective heaters | + | |- |
− | 5. Maintain pipe insulation in unheated areas | + | |1. Use heat only when area is occupied |
− | 6. Check condensate traps | + | |- |
− | 7. Vent air from hot water systems | + | |2. Set thermostats to minimum for comfort |
− | 8. Time switches | + | |- |
− | 9. Manual controls where appropriate | + | |3. Minimise loss of hot air |
− | Higher cost / longer term opportunities | + | |- |
+ | |4. Clean and effective heaters | ||
+ | |- | ||
+ | |5. Maintain pipe insulation in unheated areas | ||
+ | |- | ||
+ | |6. Check condensate traps | ||
+ | |- | ||
+ | |7. Vent air from hot water systems | ||
+ | |- | ||
+ | |8. Time switches | ||
+ | |- | ||
+ | |9. Manual controls where appropriate | ||
+ | |} | ||
+ | |||
+ | {| class="wikitable" | ||
+ | !colspan="6"|Higher cost / longer term opportunities | ||
Energy Saving Opportunity | Energy Saving Opportunity | ||
1. Install more/more efficient thermostats | 1. Install more/more efficient thermostats | ||
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==== Motors ==== | ==== Motors ==== | ||
+ | |||
+ | {| class="wikitable" | ||
Energy Saving Opportunity | Energy Saving Opportunity | ||
1. Try to ensure that motor capacity is not more than 25% in excess of full load. | 1. Try to ensure that motor capacity is not more than 25% in excess of full load. | ||
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==== Compressed Air ==== | ==== Compressed Air ==== | ||
+ | |||
+ | {| class="wikitable" | ||
Low-cost / short term opportunities | Low-cost / short term opportunities | ||
Energy Saving Opportunity | Energy Saving Opportunity | ||
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7. Fix leaks | 7. Fix leaks | ||
8. Check on correct pressure setting regularly. | 8. Check on correct pressure setting regularly. | ||
+ | |||
+ | {| class="wikitable" | ||
Higher cost / longer term opportunities | Higher cost / longer term opportunities | ||
Energy Saving Opportunity | Energy Saving Opportunity | ||
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==== Vacuum ==== | ==== Vacuum ==== | ||
+ | |||
+ | {| class="wikitable" | ||
Low-cost / short term opportunities | Low-cost / short term opportunities | ||
Energy Saving Opportunity | Energy Saving Opportunity | ||
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2. Regular maintenance is necessary to maintain pump efficiency and prevent breakdown, especially when the vacuum-space contains condensing vapours; | 2. Regular maintenance is necessary to maintain pump efficiency and prevent breakdown, especially when the vacuum-space contains condensing vapours; | ||
3. Fix leaks | 3. Fix leaks | ||
+ | |||
+ | {| class="wikitable" | ||
Higher cost / longer term opportunities | Higher cost / longer term opportunities | ||
Energy Saving Opportunity | Energy Saving Opportunity | ||
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==== Refrigeration ==== | ==== Refrigeration ==== | ||
+ | |||
+ | {| class="wikitable" | ||
Design measures | Design measures | ||
Energy Saving Opportunity | Energy Saving Opportunity | ||
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2. Use an integrated plant layout – optimise use of evaporators or condensers (i.e. remove obstacles) | 2. Use an integrated plant layout – optimise use of evaporators or condensers (i.e. remove obstacles) | ||
3. Limit energy losses through open doors | 3. Limit energy losses through open doors | ||
+ | |||
+ | |||
+ | {| class="wikitable" | ||
Low-cost / short term opportunities | Low-cost / short term opportunities | ||
Energy Saving Opportunity | Energy Saving Opportunity | ||
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11. Delayed start-up of compressors. Initially, only start-up of ventilation. | 11. Delayed start-up of compressors. Initially, only start-up of ventilation. | ||
12. Increase the evaporation temperature. | 12. Increase the evaporation temperature. | ||
+ | |||
+ | {| class="wikitable" | ||
Higher cost / longer term opportunities | Higher cost / longer term opportunities | ||
Energy Saving Opportunity | Energy Saving Opportunity | ||
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==== Lighting ==== | ==== Lighting ==== | ||
+ | |||
+ | {| class="wikitable" | ||
Energy Saving Opportunity | Energy Saving Opportunity | ||
1. Use the most efficient lamps consistent with required illumination levels and colour rendering. | 1. Use the most efficient lamps consistent with required illumination levels and colour rendering. | ||
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==== Building skin ==== | ==== Building skin ==== | ||
+ | |||
+ | {| class="wikitable" | ||
Energy Saving Opportunity | Energy Saving Opportunity | ||
1.Thermal insulation of floor | 1.Thermal insulation of floor | ||
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==== Central Heating ==== | ==== Central Heating ==== | ||
+ | |||
+ | {| class="wikitable" | ||
Low-cost / short term opportunities | Low-cost / short term opportunities | ||
Energy Saving Opportunity | Energy Saving Opportunity | ||
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3. Insulate pipework | 3. Insulate pipework | ||
4. Insulate hot water storage tanks | 4. Insulate hot water storage tanks | ||
+ | |||
+ | |||
+ | {| class="wikitable" | ||
Higher cost / longer term opportunities | Higher cost / longer term opportunities | ||
Energy Saving Opportunity | Energy Saving Opportunity | ||
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==== Ventilation system ==== | ==== Ventilation system ==== | ||
+ | |||
+ | {| class="wikitable" | ||
Energy Saving Opportunity | Energy Saving Opportunity | ||
1. Heat recovery of exhaust air using a rotary wheel. | 1. Heat recovery of exhaust air using a rotary wheel. | ||
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==== Exhaust systems ==== | ==== Exhaust systems ==== | ||
+ | |||
+ | |||
+ | {| class="wikitable" | ||
Energy Saving Opportunity | Energy Saving Opportunity | ||
1. Use local exhaust ventilation systems. The purpose of a local exhaust system is to remove the contaminants (dust, fume, vapour etc.) at the source. | 1. Use local exhaust ventilation systems. The purpose of a local exhaust system is to remove the contaminants (dust, fume, vapour etc.) at the source. | ||
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==== Air-conditioning ==== | ==== Air-conditioning ==== | ||
+ | |||
+ | |||
+ | {| class="wikitable" | ||
Energy Saving Opportunity | Energy Saving Opportunity | ||
1. Use thermal energy storage systems (i.e. ice banks) | 1. Use thermal energy storage systems (i.e. ice banks) | ||
2. Use shading devices for windows. | 2. Use shading devices for windows. |
Revision as of 14:47, 11 January 2015
PRODUCTION PROCESSES
Thermal energy
Heat generation
low-cost / short term opportunities | |||||
---|---|---|---|---|---|
Energy Saving Opportunity | Action to Check | ||||
1. Reduce excess combustion air to minimum | 1. CO2/O2 measurement | ||||
2. Maximise completeness of combustion | 2. Soot/CO measurement | ||||
3. Maintain boiler cleanliness (soot/scale) | 3. Monitor for rise in flue gas temperature | ||||
4. Repair (replace) boiler insulation | 4. Periodic inspection of boiler insulation condition. | ||||
5. Insulate feedwater tank – cover tank | 5. Check possible feedwater temperature losses | ||||
6. Insulate condensate return lines | 6. Check possible heat loss from condensate return lines. | ||||
7. Optimise quality of make-up water and feedwater | 7. Monitor quality of make-up water and feedwater: hardness, acidity, O2. | ||||
8. Minimise blowdown | 8a. Monitor concentration of dissolved solids in boiler water.
8b. Improve blowdown controls | ||||
9. Maintain nozzles, grates, fuel supply pressure/temperature at manufacturers’ specifications | 9a. Ensure specifications are available and in use.
9b. Regular check and resetting/maintenance. | ||||
10. Maximise combustion air temperature | 10. Draw air from highest point in boilerhouse. | ||||
11. Reduce steam pressure where it exceed system/process requirements. | 11. Check system/process needs; adjust controls. | ||||
12. Use duct for intake of warmer combustion air | 12. Install duct from combustion air intake to higher parts of room. | ||||
13. Install an automated gas leakage detector. | - | ||||
14. Repair leaks in steam pipework. | - |
Higher cost / longer term opportunities | |||||
---|---|---|---|---|---|
Energy Saving Opportunity | Action to Check | ||||
1. For rapidly varying demand, convert one or more boilers to live accumulator (buffer tank). | 1. Monitor/evaluate demand change patterns. | ||||
2. Alter controls to “High-Low-Off” or “modulating-Low-Off” | 2. Monitor/evaluate demand change patterns. | ||||
3. Install flash steam heat recovery | 3. Consider in large capacity situations with high (continuous/frequent) blowdown. | ||||
4. Improve combustion controls. | 4a. Provide adequate heat input to meet demand.
4b. Minimise fuel/pollution. 4c. Protect personnel/equipment. | ||||
5. Waste heat recovery | 5a. Economiser
5b. Air heater (recuperator)? | ||||
6. Install boiler blowdown heat recovery. | 6. Consider in large capacity situations with high (continuous/frequent) blowdown. | ||||
7. Use process integration | 7. Couple process units that have significantly different heat requirements (i.e. low-pressure
steam leaving a high-pressure steam consuming production process can be used for a process requiring low-pressure steam). |
Heat Distribution
Low-cost / short term opportunities | |||||
---|---|---|---|---|---|
Energy Saving Opportunity | Action to Check | ||||
1. Repair/replace faulty insulation | 1. Pipework insulation – especially around valves. | ||||
2. Repair inefficient steam traps/drains. valve spindles etc. | 2. Regular checks for leaks throughout the system. | ||||
3. Insert valves to isolate “periodic-use” items in system. | 3. Check system for periodic (e.g. seasonal, nightly) items (e.g. space heaters). | ||||
4. Remove/isolate “dead-legs” and redundant Pipework. | 4. Check for dead-legs and redundant piping. |
Higher cost / longer term opportunities | |||||
---|---|---|---|---|---|
Energy Saving Opportunity | Action to Check | ||||
1. Replace steam traps/drains with more efficient designs. | 1. Monitor efficiency of, and heat losses from existing traps. | ||||
2. Replace or increase insulation | 2. Check existing insulation; estimate heat losses in system. | ||||
3. Maximise condensate returns. | 3. Measure “discarded” heat from condensate. | ||||
4. Redesign system to minimise pipe runs. | - | ||||
5. Generation pressure reduction. | - |
Heat Utilisation
Process
Energy Saving Opportunity |
1. Plant insulation |
2.Local burner efficiency |
3. Maximise heat transfer rate |
4. Improve controls (e.g. thermostats) |
5. Consider alternative energy source |
6. Ensure plant at high load factor |
7. Eliminate uneconomic “hot standby” periods |
8. Recycle waste heat to process |
8. Recover heat, for use elsewhere |
9. Train all staff to operate manual controls and to watch for energy saving opportunities. |
Space heating
Low-cost / short term opportunities | |||||
---|---|---|---|---|---|
Energy Saving Opportunity | |||||
1. Use heat only when area is occupied | |||||
2. Set thermostats to minimum for comfort | |||||
3. Minimise loss of hot air | |||||
4. Clean and effective heaters | |||||
5. Maintain pipe insulation in unheated areas | |||||
6. Check condensate traps | |||||
7. Vent air from hot water systems | |||||
8. Time switches | |||||
9. Manual controls where appropriate |
Higher cost / longer term opportunities
Energy Saving Opportunity 1. Install more/more efficient thermostats 2. Use motorised valves to divide building into different zones 3. Air curtains 4. Change energy source 5. Change heating system – where: Insulation Ventilation Use Good High Radiant Heat Poor Low Convective Heat 6. Improve building insulation
Electrical EnergyMotors |
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