1 Scope
The current standard specifies the power consumption limit and calculation method for the unit product in the production process of crystalline silicon solar cells.
This standard is applicable to the calculation, assessment and power consumption control of comparable power consumption per unit product of crystalline silicon solar cell manufacturers in Zhejiang Province.
2 normative references
The following documents are indispensable for the application of this document. For dated references, only the dated version applies to this document. For undated references, the latest version (including all amendments) applies to this document.
GB/T 12497 three-phase asynchronous motor economic operation
GB/T 13462 power transformer economic operation
GB/T 13466 AC Electrical Drive Fan (Pump, Air Compressor) System Economic Operation General Rules
3 Terms and Definitions
The following terms and definitions apply to this standard.
3.1 Power consumption
During the statistical reporting period, the company uses the prescribed calculation method to refer to the total amount of electricity consumed by the products it produces as electricity consumption in kilowatt hours (kW·h).
3.2 Comparable power consumption per unit of product
During the statistical reporting period, the company converted the output of each qualified product of crystalline silicon solar cells into the comparable unit power consumption of single crystal silicon rods, polycrystalline silicon ingots, silicon wafers, solar cells, and solar cell modules in the production process.
4 requirements
4.1 Production Unit's Output Power Consumption Limit of Existing Enterprises
The current power consumption limit of the enterprise unit product should meet the requirements in Table 1.
4.2 New (renovation and expansion) enterprise product unit output power consumption limit access value
The access value of the comparable power consumption limit for new (renovation and expansion) enterprise unit products shall meet the requirements in Table 2.
4.3 advanced value of electricity consumption limit per unit product
The advanced value of the comparable power consumption limit per unit product should meet the requirements in Table 3.
5 statistical scope and calculation methods
5.1 Statistical scope
5.1.1 Monocrystalline silicon rod production (process) power consumption
Including the power consumed by the main production system, the auxiliary production system and the auxiliary production system.
Single crystal silicon rod main production system power consumption including washing material, pull single crystal, cut section, open square, flat mill, etc. from the polysilicon material into this process to make the single crystal silicon (quasi) square rod of electricity consumed by the main production process .
5.1.2 Polycrystalline ingot production (process) power consumption
Including the power consumed by the main production system, the auxiliary production system and the auxiliary production system. The power consumption of the main production system of polycrystalline silicon ingots includes electricity consumed in the main production processes such as washing, melting, prescribing, polishing, and the like, from the polysilicon feedstock entering the process to the production of polysilicon square bars.
5.1.3 Wafer production (process) power consumption
Including the electricity consumed by the main production system, auxiliary production and subsidiary production systems. The main production system power consumption of silicon wafers includes the power consumed by the main production process from monocrystalline silicon (quasi-square) square bars or polycrystalline silicon square bars into the single crystal silicon wafer or polycrystalline silicon wafers from slicing, cleaning and testing. At the same time when the production of a variety of specifications of the product's power consumption should be calculated separately.
5.1.4 Solar Cell Production (Process) Power Consumption
Including the power consumed by the main production system, the auxiliary production system and the auxiliary production system.
The main production system power consumption of solar cells includes cleaning, wool, diffusion, etching, coating, printing, testing, etc. The amount of electricity consumed from the main production process of silicon wafers into this process to make solar cells.
5.1.5 Solar Module Production (Process) Power Consumption
Including the power consumed by the main production system, the auxiliary production system and the auxiliary production system.
The main production system power consumption of solar cell modules includes welding, laminating, packaging, testing, packaging, etc. The amount of electricity consumed in the main production process from solar cell wafers entering this process to making solar cell modules.
5.1.6 Auxiliary and subsidiary production systems Electrical energy consumption Auxiliary production systems Electrical energy consumption refers to the amount of electricity consumed by the technological processes, facilities and equipment configured for the production system process equipment, including power, power supply, mechanical repair, water supply, gas supply, heating and refrigeration. , Meters, workshop offices, operating rooms, restrooms, locker rooms, and in-plant material stores, as well as electrical energy consumed by safety and environmental protection devices.
Auxiliary production system power consumption refers to the amount of electricity consumed by the production command system (factory) specially configured for the production system and the departments and units serving the production service within the plant area, including the plant lighting, office, central control room, central laboratory, and finished product inspection. Room and other power consumption.
When the production of multiple products (or more than one process is common), the power consumption of the auxiliary production system and auxiliary production system, which can be directly included in the product, shall be directly included in the power consumption of the product; it shall not be directly included in the product, and the amount of power loss shall be The energy consumption ratio method is apportioned rationally. Consumption of electricity does not include the use of domestic electricity (in-house hostels, schools, culture and entertainment, health care, canteens, and child care, etc.) and approved infrastructure projects. 5.2 Calculation Methods
5.2.1 Calculation of Total Electricity Consumption of Product Output
The total electricity consumption of a certain type of product output is equal to the sum of the actual electricity consumption of all processes and systems in the statistical reporting period.
6 Energy Conservation Management and Measures
6.1 Energy Conservation Basic Management
6.1.1 Establish and improve energy management organizations, organize, manage, supervise, evaluate and evaluate energy conservation.
6.1.2 Establish effective energy conservation systems and measures, strengthen the accountability system, and establish a sound energy conservation responsibility assessment system.
6.1.3 Formulate energy consumption management and assessment methods, effectively organize energy statistics and assessment work, ensure the accuracy and timeliness of energy statistics data, do a good job in statistical analysis, regular assessment and publication of energy consumption and utilization status, and do a good job Energy statistics management and archiving.
6.2 Energy Saving Technology Management
6.2.1 Economic Operation
The enterprise shall make the production equipment reach the state of economic operation, and the economic operation and management of the electric motor shall comply with the provisions of GB/T 12497; the economic operation and management of the fan, pump and air compressor shall comply with the provisions of GB/T 13466; for the power transformer Economic operation and management should comply with the provisions of GB/T 13462.
Enterprises should strengthen the overhaul and maintenance of equipment, increase the load factor of the equipment, and make it run for a long period of time; should make the production of rotating equipment reasonably matched and economically operated; static equipment should be in a state of high efficiency and low energy consumption; it should be based on reasonable energy use. The principle is to be used for various energy sciences and cascade utilization; for various heat (cold) equipment and pipe networks, maintenance and management shall be strengthened to prevent running, running, dripping and leaking.
6.2.2 Energy Saving Technology
6.2.2.1 Develop and utilize new technologies, new processes, and new equipment that are energy-efficient.
6.2.2.2 Promote cleaner production, improve the efficiency of resource utilization, and reduce pollutant emissions.
6.2.2.3 Comprehensive utilization of recycled water shall be used to fully utilize water resources.
6.2.2.4 Promote the "three wastes" comprehensive utilization technology.
6.2.2.5 Increase the natural power factor of the equipment and reduce the harm of higher harmonics.
6.2.2.6 Continuously update production equipment and gradually eliminate backward and high-energy-consuming processes and equipment.
6.2.3 Supervision and assessment Establish document files for energy consumption test, energy consumption statistics, energy balance and energy assessment results, and conduct controlled management of the documents.
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