Energy - saving and Consumption - reducing Schemes for Central Air - conditioning in Dust - free Workshops
2024.11.07
In the operation cost of dust - free workshops, the energy consumption of the central air - conditioning system accounts for a relatively large proportion. How to achieve energy - saving and consumption - reducing while ensuring the environmental quality of the workshop is a concern for many enterprises. Guangzhou Kunling Purification Equipment Co., Ltd. brings you the following comprehensive energy - saving and consumption - reducing schemes for central air - conditioning in dust - free workshops.
I. Optimize the Design Process
(1) Precise Load Calculation
Accurately calculating the air - conditioning load of the dust - free workshop is the basis of energy - saving. This requires comprehensive consideration of various factors such as the workshop's area, heat generation of process equipment, number of personnel and their activity intensity, heat from lighting, and heat - transfer characteristics of the enclosure structure. Through detailed heat - and - moisture balance calculations, an oversized design of the air - conditioning system can be avoided. For example, in some electronic chip - manufacturing workshops where the equipment generates a high and uneven heat, we need to use professional simulation software to accurately evaluate the load in each area and ensure that the air - conditioner is properly sized to prevent energy waste caused by over - design.
(2) Selection and Optimization of System Types
Select an appropriate central air - conditioning system type according to the characteristics and actual requirements of the dust - free workshop. For workshops with a large area and clear zoning, a variable refrigerant flow (VRF) system or a system combining a chiller and fan - coil units may be more suitable. At the same time, optimize the pipeline design of the system, reduce the unnecessary length of pipes and the number of elbows to lower the conveying resistance of the refrigerant or chilled water and improve the operating efficiency of the system. For instance, when designing the pipeline route, the principle of the shortest path should be adopted to avoid detours, enabling the refrigerant or chilled water to circulate more smoothly in the system.
II. Improve Operating Efficiency
(1) Regular Equipment Maintenance and Servicing
The good operating condition of central air - conditioning equipment is the key to energy - saving. Regularly inspect and maintain key components such as compressors, evaporators, condensers, and fans. Clean the heat - exchange surfaces of evaporators and condensers to remove impurities such as dust and dirt and ensure good heat - exchange performance. Check the impeller balance and belt tightness of the fans to ensure their normal and efficient operation. For example, arrange a simple equipment inspection once a month and a deep - maintenance once a quarter, including chemical cleaning of heat exchangers, which can effectively improve the operating efficiency of the equipment and reduce energy consumption.
(2) Application of Intelligent Control Systems
Adopt advanced intelligent control systems to achieve fine - grained management of central air - conditioning. Through temperature, humidity, pressure, and other sensors installed in the workshop, real - time environmental data are collected and fed back to the control system. The control system automatically adjusts the operating frequency, air volume, water flow, etc. of the air - conditioner according to preset parameters and algorithms. For example, when a certain area in the workshop is unoccupied, the system can automatically reduce the operating power of the air - conditioner in this area; when the humidity in the workshop exceeds the set range, the system precisely adjusts the dehumidification function to avoid energy waste caused by excessive dehumidification.
III. Utilize Natural Cold Sources
(1) Utilization of Seasonal Natural Cold Sources
During spring - autumn seasons and some periods in winter, when the outdoor temperature is suitable, natural cold sources can be fully utilized. Through the installation of electric dampers, fresh - air handling units, and linkage control devices with the central air - conditioning system, natural ventilation or 100% fresh - air operation modes can be achieved. When the outdoor air temperature and humidity meet the requirements of the workshop, outdoor air is introduced to partially or completely replace the cooling function of the air - conditioning system. For example, during the transitional season, when the outdoor temperature is between 10 - 20 °C, the 100% fresh - air operation mode can be enabled, allowing the outdoor air to be directly sent into the workshop after filtration, reducing the running time of the air - conditioning unit.
(2) Utilization of Diurnal Temperature Difference as a Natural Cold Source
For areas with a large diurnal temperature difference, cold storage during the low - temperature period at night can be utilized. Add cold - storage devices such as ice - storage or water - storage systems to the central air - conditioning system. At night, the air - conditioning unit is driven by low - cost electricity to store cold energy; during the day, when the temperature rises, the stored cold energy is released for workshop cooling, reducing the power consumption of the air - conditioning unit during peak daytime hours. For example, in some northern parts of China with a large diurnal temperature difference, ice - storage systems can effectively reduce the electricity cost of enterprises and the energy consumption of central air - conditioning.
IV. Improve the Energy - saving Performance of the Enclosure Structure
(1) Strengthen Insulation Measures
Improving the thermal insulation performance of the enclosure structure of the dust - free workshop can effectively reduce heat transfer between the inside and outside of the room and lower the air - conditioning load. High - efficiency thermal insulation materials such as thermal - insulation rock wool boards and polyurethane foam boards are used for the walls, ceilings, and floors of the workshop. At the same time, ensure the installation quality of the thermal insulation materials to avoid gaps or damage to the insulation layer. For example, when installing thermal - insulation rock wool boards on the walls, ensure that the boards are tightly joined together, and fill the gaps with special sealing materials to achieve the best insulation effect.
(2) Reduce Air Infiltration
Inspect and repair possible air leakage points such as doors, windows, and gaps in the enclosure structure of the workshop. Use air - tight doors with good sealing performance, double - or multi - layer hollow - glass windows, and install high - quality sealing strips around the doors and windows. Reduce the infiltration of outside hot air and the leakage of cold air inside the workshop, maintain a stable temperature environment in the workshop, and reduce air - conditioning energy consumption. For example, by replacing aging sealing strips and repairing tiny gaps in doors and windows, the amount of air infiltration can be significantly reduced, and the energy - saving effect of the workshop can be improved.
V. Energy Recovery and Utilization
(1) Exhaust Air Heat Recovery
Install exhaust air heat - recovery devices such as rotary heat exchangers or plate - type heat exchangers in the air - conditioning system of the dust - free workshop. When the air in the workshop is exhausted, the heat (or cold) of the exhausted air is transferred to the fresh air entering the workshop through the heat exchanger to achieve energy recovery and utilization. This is particularly effective in workshops with a large amount of exhaust air demand, such as pharmaceutical workshops or electronic assembly workshops, and can significantly reduce the energy consumption of fresh - air treatment in the air - conditioning system.
(2) Condensing Heat Recovery
The condensing heat in the central air - conditioning system can be effectively recovered and utilized. For example, the condensing heat can be used to heat domestic hot water, pre - heat process water, or provide a heat source for other heat requirements in the workshop. Through heat exchangers, the condensing heat is transferred to the medium that needs to be heated to improve the comprehensive utilization efficiency of energy and reduce additional energy consumption.
Through the implementation of the above multi - dimensional energy - saving and consumption - reducing schemes, enterprises can significantly reduce the energy consumption of the central air - conditioning system in dust - free workshops while ensuring the environmental quality, achieving a win - win situation for both economic and environmental benefits. Guangzhou Kunling Purification Equipment Co., Ltd. has rich experience and a professional technical team and can customize the most suitable central air - conditioning energy - saving scheme for your dust - free workshop. Welcome to consult at any time.
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