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Heating caused by solar water heater standards battle

[REVIEW] may, In the near future, there will be two names sound similar to the standard at the same time placed in front of the solar water heater business – \"Live auxiliary energy system technical conditions\" and \"with a solar heating unit The special requirements of storage-type water heater. \"

     Perhaps the near future, there will be two names sound similar to the standard at the same time placed in front of the solar water heater business – \"Live auxiliary energy domestic solar hot water system technical conditions\" and \"water with a solar heating unit water heater specific requirements. \"

     The difference between the surface

     \"Charged auxiliary energy domestic s and technical conditions\" (hereinafter referred to as \"auxiliary solar power technology\") under the jurisdiction of the national solar Standardization Technical Committee, as recommended national standards. The \"unit of heating water with solar water heaters special requirements\" is GB4706.12-2006 \"Household and similar electrical appliances Particular requirements for storage-type water heater,\" the normative, as GB4706.12-2006 has been there is an appendix, so the development of the appendix is ??also known as Appendix BB. Currently, two standards have been submitted for approval to enter the stage.

     Draft for Approval in the two standards, auxiliary electric energy for domestic solar hot water system is defined as: the solar collectors, heat storage tanks, pipelines, electric auxiliary heater and controller, etc., also known as auxiliary energy charged s, hot water storage tank for heating water installations; and solar heating unit with a storage-type water heater is solar water heating and electricity for the energy, the two functions can work simultaneously or one feature independently work storage-type water heater. These two seemingly different description, in fact, just the same thing from different angles to make the interpretation. Solar water heater companies interviewed indicated that the two standards for a product, but the starting point is different.

     In addition to different names, the company participated in the drafting of the standard are not the same. \"Electric assisted solar technology,\" the drafting of the unit by the 16 solar water heaters, including Sang Le, Huang Ming, northern Purcell, Pete, Hua Yang, Sunshine, Rongshida solar, Norit, Qinghua Sun, Four Seasons Mu-song, the United States large, brilliant, per liter, light, Ian Van and Temple, and the only water heater appliance company – AO. Smith form. Appendix BB of the drafting unit is mainly for the electric water heater companies, and large-scale solar water heater industry in several companies. As the reporter did not get a description of the preparation of Appendix BB, this can not be listed in detail in the company participated in the drafting, but, according to the standards of the enterprise to participate in those memories, the drafting unit including the United States, Haier, AO. Smith and other electric water heater companies, as well as Emperor Ming, Pete, Qinghua Sun and other solar water heater business. No wonder an industry joke: \"to develop\" power assisted solar technology, \"who are not familiar with electric auxiliary heating; drafting Appendix BB who do not understand the solar water heater.\"

     Content of the different

     Safety standards as normative appendix, Appendix BB is GB4706.1-2005 \"Household and similar electrical appliances – General requirements for safety\" and GB4706.12-2006 for additions and modifications formed. \"Electric auxiliary heating device with solar water heaters need to CCC, and CCC certification based on standards is GB4706.12-2006, but this is not considered when the standard in the development of the special nature of the solar water heater, so irrelevant. \"Beijing Tsinghua Solar Energy Development Co., Ltd. Vice President Huangzhe Lin said that\" the development of Appendix BB, it is hoped more suitable rules for the introduction of solar water heaters. \"

     Appendix BB by reading the manuscript, the reporter found that the original standards in Appendix BB to make 20 more additions and changes, to modify some of the more concentrated the product structure. It participated in the drafting of the standard solar water heater business to reflect, the more intense is the debate was part of the structure. \"In particular, temperature and pressure valve installed on whether the discussion, electric water heaters and solar water heaters are not the same view held.\" Beijing Solar Energy Research Institute Co., Ltd., director of high quality even Kui said.

     \"\" Solar power assisted technical conditions \"relating to safety issues, which mainly refer to the current provisions of GB4706.1-2005.\" Huang Ming Solar Energy Group Co., Ltd. Development Minister ZHANG Li-feng said. By contrast, the \"electrical\" reporter found that \"electric auxiliary solar technology conditions\" in addition to many references GB4706.1-2005 provisions, protection against electric shock, water level, electrical strength, leakage current requirements, etc., are related to GB4706 .12-2006 the Ordinance.

     Demands on the difference

     \"At present, in the city to use solar water heater market, about half of the products with electric auxiliary heating device.\" Solar thermal Professional Committee Luo Zhentao said. With the electric auxiliary heating device with a solar water heater market expansion, these products become the focus of the standards community, and the drafting of the standard game is the most obvious and most truly reflect the aspirations of all parties.

     Discussed in Appendix BB is more intense in the temperature relief valve, for example. Appendix BB provides solar heating unit with a closed water heaters should be equipped with temperature and pressure-sensitive and temperature in the tank reached 99 ? before the start of the pressure relief device. \"In fact, install a temperature relief valve is technically very easy to do, costs not much, but it can cut off the way to solve the solar temperature and pressure problems.\" Lian Kui said.

     Huang Zhelin that electric water heaters and solar water heater business enterprise debate is so fierce, the difference stems from the two products. \"Electric water heater companies attach great importance to safety, but the structure of the solar water heater has its own particularity, does not mean unsafe.\"

     The solar water heater companies surveyed have said that the standards set in Appendix BB higher than the formal implementation of solar water heater industry may have greater impact, some SMEs may find it difficult to meet standards. No wonder a staff to participate in standards development, said: \"For many businesses, solar water heaters, Appendix BB seems a bit \\ harsh\\ .\" Provides a relatively \"moderate\" and \"auxiliary solar power technology\", is clearly more affected by solar water heaters welcome.

     Respondents to the water heater business executives generally, Appendix BB\\ s security requirements are relatively modest, due to previous CCC certification of solar water heaters do not directly basis when the standard, after the introduction of Appendix BB can fill this gap.

     In addition, an unnamed industry sources, the biggest difference between the two standard starting point is different, the content does not contradict the standard, two standards of evaluation which can not be better. Now the standards war, largely due to poor communication between the various standards committees caused. He said: \"The development of national standards, should be the integration of existing resources, so as to develop a consistent industry status quo and lead the development of the industry standard.\"