subject: Resolution: storage-type electric water heater national energy efficiency standards - storage-type electric water heater, that is, electric water [print this page] Resolution: storage-type electric water heater national energy efficiency standards - storage-type electric water heater, that is, electric water
2006 end of the year, China started to "storage-type
Water Heater
Limit value of energy efficiency and energy efficiency rating "standard-setting work, and endorsed by the National Development and Reform Commission (NDRC), United Nations Development Programme (UNDP), Global Environment Facility (GEF) co-sponsored by the China End Use Energy Efficiency Project (EUEEP) support. June 2007, the National Standardization Management Committee formally approved the "storage-type electric water heater efficiency limit value and energy efficiency rating" project; the end of 2007, after the standard preparation group effort, "storage-type electric water heater efficiency limit value and energy efficiency rating" completion of the development and approval; April 1, 2008, GB21519-2008 "storage-type electric water heater energy efficiency and energy efficiency level limit values", and is planned for November 1, 2008 into effect. The scope and parameters of energy efficiency evaluation At present, people use the water heater to the main storage-type electric water heater, or thermal, heat pump water heaters are also momentum of rapid development, such as temperature and electric water heater is energy-saving, compact, saving time by industry and other factors concern. In view of the hot type, pump type electric water heater with a storage-type water heater works with assessment targets and big difference, experts and businesses agreed to propose three types of heaters on the development of energy efficiency standards. Therefore, GB21519-2008 "storage-type electric water heater energy efficiency and energy efficiency level limit value" shall be applicable to storage-type electric water heaters and other auxiliary energy use electric water heater. The use of electric water heaters as a supplementary energy sources, such as auxiliary heating with electricity
Solar water heaters
Does not apply to this standard. The standard edition, has specified "no thermal insulation to the water heater does not apply to this standard" (IEC60379 similar description), but considering there are still some production in China in the electric water heater and the shell without any insulation between the products, if there is no insulation to the water heater does not apply to this standard, the standard will not cover this part of the water heater, thus making it a part of the non-mainstream products have storage-type water heater less than control, may cause some negative effects, so the deletion of the Draft for Approval of "no insulation to the water heater does not apply to this standard", so long as to reach the technical requirements, whether the installation of insulation, What materials, want to add thickness from companies themselves. And storage-type electric water heater energy efficiency-related technical indicators are: the inherent energy loss of 24 hours (24 hours inherent energy factor), the rate of hot water, heating efficiency. In addition, the energy consumption of storage-type electric water heater and use habits of a great relationship, so some energy-saving control technology developed by energy-saving control device for saving energy also play an important positive role, such as high insulation technology, intelligent reservation technology, the temperature insulation technology, layered heating technology, night electrical technology, variable capacity technologies. Most countries with 24-hour energy loss inherent to assessing storage-type electric water heater energy efficiency, energy consumption in Australia in addition to the inherent 24 hours, while also assessing water output rate; the United States is a set of 6 water discharge standard simulation program for evaluation of electricity consumed by storage-type electric water heater efficiency. Energy consumption test methods from the point of view, most of the energy loss inherent in the national 24-hour test method and IEC60379 "Performance measurement of water heater," similar to the temperature varied, the location of test points are not the same. United States, more unique test method can simulate the use of state power consumption, but the measurement of complex, time-consuming, expensive tests. Through the international standards of research, discussion, and the storage-type electric water heater energy efficiency of the verification test to determine China's "storage-type electric water heater limit value of energy efficiency and energy efficiency rating" assessment of energy efficiency indicators: 24 hours inherent to coefficient and hot water consumption rate. Energy efficiency test methods Order to maintain and GB/T20289-2006 "storage-type electric water heater," coherence, energy efficiency standards inherent in the 24-hour energy consumption test methods, hot water output rate of the same test methods as far as possible with GB/T20289-2006, but because GB/T20289-2006 product testing coverage area is limited, and some local representation is not very clear, easily lead to misunderstanding, so in GB/T20289-2006 energy efficiency standards on the basis of improved test methods, including the following points.
