Brief description of "flat-panel TV energy efficiency limit value and energy efficiency rating"
On October 15, 2010, the National Development and Reform Commission, the General Administration of Quality Supervision, Inspection and Quarantine and the Certification and Accreditation Administration jointly issued Announcement No. 28 of 2010. The Implementation Rules for Energy Efficiency Labeling for Flat Panel TVs will be implemented on March 1, 2011. The national mandatory standard GB 24850-2010 "flat-panel TV energy efficiency limit value and energy efficiency rating" was released on June 30, 2010 and will be officially implemented on December 1, 2010.
From December 1st, the standard of "flat-panel TV energy efficiency limit value and energy efficiency rating" was implemented. In addition to limiting the passive standby power of flat-panel TVs, the standard also divided the energy-efficiency levels of flat-panel TVs. Among them, level 1 has the highest energy efficiency and is the most efficient product; level 2 is the energy-saving evaluation value, which is the minimum requirement for energy-saving product certification; level 3 is the limit value, which is the minimum market entry threshold, and products with energy efficiency lower than level 3 will not enter. market. The energy efficiency standards of LCD TVs and plasma TVs are different. The energy efficiency indexes of three levels of LCD TVs are 1.4, 1.0 and 0.6, respectively, and the energy efficiency indexes of plasma TVs are 1.2, 1.0 and 0.6.
The energy efficiency standard also stipulates that the standby energy consumption of all flat-panel TVs sold before January 1, 2012 must be within 1.0W. On January 1, 2012 and after, the standard control will be more stringent, all products for sale. Must be controlled within 0.50W.
Implemented on March 1, 2011 is the "Standards for the Implementation of Energy Efficiency Labeling for Flat Panel Televisions". This standard mainly requires flat-panel TVs to be labeled with energy efficiency index and energy efficiency rating, reflecting the true energy efficiency level of the TV.
details:
1. Flat panel TV products will be divided into three energy efficiency levels
The new standard stipulates that the energy efficiency rating of flat-panel TVs is divided into three levels, of which the first-level energy efficiency is the highest. The energy efficiency rating is defined according to the energy efficiency index of the product. The energy efficiency index refers to the ratio of the energy efficiency test value of the flat panel TV to the reference value under the standard test procedure, which is a ratio. The formula for calculating the energy efficiency index of a flat-panel TV is as follows:
The product energy efficiency test value is the ratio of the actual luminous intensity of the flat-panel TV screen to the energy consumption of the flat-panel TV (ie, the difference between the power-on state and the signal processing energy consumption) under the specified test procedure. The unit is Candela per watt (cd/W). ).
The calculation formula for the energy efficiency of flat-panel TVs is as follows:
Eff is flat panel TV energy efficiency; Pk is power consumption in startup state; Ps is signal processing energy consumption, 10W when using analog RF and YpbPr port input, 17W using digital RF port input; L is screen average brightness; S is effective for screen Luminous area. On the right side of the formula, (L × S) can be seen as the total amount of screen illumination, the unit is cd; (Pk-Ps) can be seen as useful luminous power consumption, the unit is W.
2. LCD TV and plasma TV are different in energy efficiency rating
In the standard, the reference values ​​of LCD TVs and plasma TVs are different. The LCD TV energy efficiency reference value is unified to 1.10 cd/W.
The plasma TV energy efficiency reference value is set according to the physical resolution of the screen subdivided into full HD and above, and not full HD. The former is 0.320 cd/W, and the latter is 0.450 cd/W.
Flat panel TV energy efficiency benchmark energy efficiency index reference value (EEI_ref) level inherent resolution ≥ 1920 and vertical inherent resolution ≥ 1080 other resolution LCD TV (Eff_LCD_ref) 1.10cd/W plasma TV (EEI_PDP_ref) 0.320cd/W0.450cd/ W From the above data comparison, it can be seen that, in the same level of energy efficiency, the actual energy efficiency of the liquid crystal is higher than that of the plasma. In other words, even if the actual power consumption of the plasma is larger than that of the liquid crystal, the energy efficiency level may be higher than that of the liquid crystal.
As an example, the same size full HD model, to achieve the same brightness picture, that is, the front (L × S), LCD TV to achieve first-class energy efficiency, its actual power consumption must be maintained at (L × S) / The value of 1.54 is below, and the plasma power consumption must be below the value of (L x S) / 0.384. Therefore, the same level of energy efficiency of the same size full HD models, the actual power consumption of the LCD will be about 1/4 of the plasma.
3. There are also provisions for standby power consumption of flat-panel TVs in the standard.
In the energy efficiency standard, the standby energy consumption of flat-panel TV products is also regulated. Before January 1, 2012, the standby energy consumption of all products sold must be within 1.0W. On or after January 1, 2012, The standard control will be more stringent, and all products sold must be controlled within 0.50W.
Standby TV standby power consumption limit value Date and time before January 1, 2012 January 1, 2012 and after standby power consumption limit value ≤1.0W≤0.50W
4. Flat-panel TVs must be tested by energy efficiency test.
The energy efficiency limit value will be used as one of the factory inspection items for flat-panel TVs, including the energy-saving limit value of flat-panel TVs (ie, achieving three-level energy efficiency or above) and the standby energy consumption limit value. Products that do not meet these two requirements are all products. It is not allowed to leave the factory, and each qualified TV must be labeled with the corresponding energy efficiency label.
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