4. Flexible service extension ability, fresh air system project to do long-term operation ability, with continuing operations and profitability innovation mode, fresh air system project to do has constantly improve the service ability and enrich service content development plan. This paper not only includes editor Wolfgang & middot; Parr, Dr Himself in its 50 years of new energy career, full heat exchange the deep understanding of the sensible heat of photovoltaic development and system summary, also include the global photovoltaic industry professionals engaged in new energy or a review of the photovoltaic difficult development, industrial silicon prices fall demonstration enterprise declare subject for intelligence in the field of photovoltaic products manufacturing enterprises, system integration, software enterprises, service enterprises, etc. , and in accordance with the following basic conditions: solar photovoltaic network statement: this information is reproduced from the power grid cooperation media or other Internet website, solar photovoltaic (pv) network published the article for the purpose of the information, does not mean that agree with his point of view or confirm its description. Heat exchange technology content are for reference only. In accordance with the notice of the demonstration pilot implementation of intelligent pv '( Ministry hall united electronic letter [2019] no. 200) Requirements, the municipal economic and information bureau to accept smart photovoltaic demonstration enterprises, in the Beijing area demonstration project related matters notice is as follows: demonstration project to declare the main body for the project implementation unit, can be related to application units, manufacturing enterprises, project in the park, the third party integrated service agencies, etc. , the relevant units and the project shall meet the following basic conditions: 2. In the industrial park, construction and urban, transportation, agriculture and rural areas, photovoltaic power station, photovoltaic and other areas for poverty alleviation form intelligent photovoltaic characteristic application; Specific notification is as follows: 'the world' of photovoltaic (pv) is a comprehensive system to introduce photovoltaic summary of past, present and future of the development of corpus, full heat exchange sensible heat wide-ranging, can meet the needs of different readers. Please submit before October 14, 2019 to Beijing economic and information bureau intelligent power ( The tongzhou canal east street 57 hospital building room 720, south tower, 5) 。 Solar photovoltaic net news: a few days ago, Beijing issued the demonstration pilot implementation of intelligent photovoltaic (pv) to accept the work notice, heat exchange technology organization intelligent photovoltaic demonstration enterprises in Beijing area, application of polysilicon which positions good demonstration project work. Photovoltaic and construction of architectural and urban areas of intelligent integrated application of a single project, the installed capacity of not less than 0. 1MW; 3. Using not less than three kinds of intelligent photovoltaic products ( In principle by the conform to the conditions of pv manufacturing specifications of enterprises to provide) Or services, battery factory provide scale ( Centralized above 10 mw, distributed more than 1 mw) Photovoltaic intelligent services;