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2020-05-27
Errors and efficiency figures during solar survey
In the measurement, the amount that can be directly read out by the measuring instrument is called the direct measurement amount; the amount obtained by the direct measurement amount and some constants and function operations is called the indirect measurement amount. The number of significant digits of the direct measurement (the last digit of the significant digit should be the estimated digit) is determined by the accuracy (minimum scale) of the measuring instrument. That is, the maximum absolute error of the measuring instrument is obtained from the accuracy of the instrument (hereinafter referred to as the error), and the error is only reserved for one significant digit. Finally, the position where the effective digit of the error is located determines that the measurement is valid. The cutoff digits. For example, if the length of a wooden stick is measured by a ruler with a minimum scale of i=1mm, the length of a wooden stick is 300mm, because the maximum error of the ruler is $=i/2=0.5mm, the cut-off position of the effective number of the measurement should be 1 At /10mm, it should be expressed as L=300.0mm. Note that the /00 after the decimal point must be written here and cannot be omitted.
2020-05-27
Research and analysis on solar collector tube steam equipment
This product adopts the unique structure design of horizontal series connection of all-glass vacuum collector tubes, cascade heating of Roots water ring vacuum unit, and one-way circulation of water circuit, which separates the warm water tank and the boiling water tank, which is the first in China.
2020-05-27
About the analysis of the characteristics and application of photovoltaic power
The temperature difference in Xinjiang changes drastically every day, with dry and less rain, hot in summer, and extremely cold in winter. The wind speed in the whole region is large in winter and spring, followed by summer and autumn. Xinjiang's solar energy reserves are very rich, which provides unique advantages for the use of solar energy. In recent years, the Asia-Europe optical cable, West-Iran and One-bird optical cable, as well as the southern and northern Xinjiang optical cables in our area have passed through most of the areas where there is no electricity. This provides a useful place for photovoltaic power. In the above-mentioned optical cable project, our unit has undertaken the installation of photovoltaic power for more than 100 unmanned stations.
2020-05-27
Summary of 8 development modes of distributed power station
is also called the integrated model of design, procurement and construction. It means that after the project decision-making stage, from the beginning of design, after bidding, an engineering company is commissioned to carry out general contracting of design-procurement-construction. Under this model, the engineering company is responsible for the management and control of the progress, cost, quality, and safety of the project according to the total price or adjustable total price stipulated in the contract, and completes the project according to the contract. There are many kinds of derivation and combination of EPC, such as EP+C, E+P+C, EPCm, EPCs, EPCa and so on.
2020-05-27
Henan Tianen Solar Technology Co., Ltd. welcomes new and old customers to discuss cooperation and join hands in creating a better tomorrow!
2020-05-27
The new website of Henan Tianen Solar Technology Co., Ltd. is up and running!
The new website of Henan Tianen Solar Technology Co., Ltd. is up and running!
2017-03-01
Kaifeng Wenzheng Automobile Trading Co., Ltd
Congratulations to grace technology companies and kaifeng is QiMao co., LTD. Signed a $200 million new energy vehicles supply contract and the depth of cooperation with its veterans network
2017-03-01
[policy] henan: energy saving and new energy bus operating subsidy measures for the management of special funds? Pure electric highest fill 80000 yuan each year The electric car resources net news:
2017-03-01
Zhengzhou city issued according to the new energy vehicles subsidies 1-0. 6
Recently, the electric car resources network reporter learns from zhengzhou city government network, zhengzhou zhengzhou encourage new energy automobile application several policies detailed rules for the implementation of the notice, for consumers to purchase new energy vehicles (not including the bus), municipal finance according to the central financial subsidies standards while the proportion of 6 give subsidies, provinces, cities and two levels of fiscal subsidies less than the sum of the central financial subsidies standards, and not more than after deducting the central fiscal subsidy 60% of vehicle sales price... The following is the original policy:
2017-03-01
Silver long product presentation
On February 21st, zhuhai silver long new energy co., LTD., sales director of central south jin to day held seminars, and the sun, general manager of the luo river traffic commissioner, grace will and grace of a part of the staff.
SAF Coolest v1.3 设置面板 JHWSX-ASVP-WSZAE-FAA
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