China is the first natural geothermal countries. According to historical records, BC 500 – 600 years ago before the Eastern Zhou era, people understood how to use underground hot water bath treatment and irrigation, but also to extract sulfur from the hot springs and other useful elements. To around 500 AD, Li, Jin Yuan Road, “The Truth of” clearly wrote: “the melting rocks out of Hot water, cures all diseases.” In Europe, Italy has also preserved the remains of the Roman use of geothermal. Where in the world where hot springs exposed, everywhere the history of low temperature geothermal use. Until now say, the whole world the size of the geothermal utilization is still dominated by low-temperature geothermal. According to the 20th century 90’s statistics, the world at low temperature geothermal direct use energy, converted into a generating capacity of approximately 7.2 million kilowatts, combined 24 billion kilowatts hours of electricity, including the port, Hungary, Iceland, France and China the largest amount, The capacity of direct use of about 34 million kilowatts.

By low-temperature geothermal temperature steps and local needs will be different, comprehensive development, many uses of water. From high temperature geothermal water exports begin, step by step for heat. For example, in some places first in hot Thinkpad T500 battery water for heating, drying, cooling, and then used for greenhouses, aquaculture, and then used for bathing, infirmary, and finally used for farmland irrigation.

Local resources, use of geothermal heating is necessary, it is much better than the boiler heating will not only save fuel and coal, but also help improve the environment, to prevent dust pollution. China’s Beijing, Tianjin, has embarked on a large number of geothermal heating experiment, the effect is very obvious. Iceland cold weather, mainly by geothermal heating. Large area of geothermal heating, geothermal exploitation generally focus, through the heat exchanger, heating by the peaking station. If other comprehensive utilization of geothermal water after the heat will be concentrated recharge underground to avoid ground water pollution of harmful substances in the surface.

The basic principles of geothermal and solar refrigeration refrigeration almost, just get the hot water solar collectors to ground water. This heat source changes, the cooling efficiency will be improved, because the ground water is relatively stable.

To heat the greenhouse effect is the main heat source of geothermal heating. The heating method can be divided into hot water heating, hot air heating and underground heating. Hot water heating generally use 60-701 of geothermal water, and can be piped to the greenhouse, and then place the heatsink uniform heating, the same as ordinary plumbing equipment. Hot water heating is delivered to the air heater, air heating, and this is heated air is blown into the greenhouse heating. Underground heating IdeaPad U350W battery plant in the greenhouse buried underground even well in advance of plastic pipe, conduit and underground hot water pipes connected. Required heating, open the valve, the water flows through the catheter to, take this to improve the greenhouse’s temperature is conducive to plant growth.

In addition, you can use low temperature geothermal water for aquaculture, water and medical spa.

Software failure occurs, mainly due to software errors, improper operation of the user, system configuration errors caused by incorrect parameters. Software failure mainly in the software installation, commissioning, operation, maintenance failure, failure generally affect the use of a single software, can lead to serious crashes, the majority of software failures can all be repaired, generally not damage to the hardware device.

1.5.1 Software fault diagnosis based on knowledge

All computers in the event of failure, the vast majority of failures are “soft fault”, for computer beginners speaking, only through a number of targeted learning and training, can grasp in a short time a number of software failures diagnosis and exclusion of basic skills.

1. The performance characteristics of software failure

Software failure, compared with the hardware failures, software failures can generally be easier to fix or repair, software failure have the following characteristics:

(1) functional error: is the software problem and the board will not lead to host various components PCGA-BP2E battery of physical damage, but due to functional errors cause the system to loss of function. Therefore, the correct diagnoses in the future, simply set correctly, adjust the return to normal.

(2) hidden: a software fault which appears mostly in the operating system, software failure occurs will result in many beginners no start. In fact, not difficult to solve a software problem, as long as the right medicine, will soon be prescribing the medicine.

(3) Random: software fault has generated more random, no clear rules, such as software failure caused by misuse is fleeting, very short duration.

(4) Recoverability: This is the biggest difference with the hardware failure, software failure can be restored, sometimes you can just restart your computer back to normal, also when you need to install or configure the software to return to normal.

2 reasons for software failure occurs ..

There are many reasons for software failure, common files are missing, the file version does not match, memory conflict, memory exhaustion, resource conflicts, viruses and destruction. The most common is the virus destroyed, as the virus causes most of the software failure can not re-install the operating system under the premise solution, if the system file is damaged, while others need to reinstall the operating system can be completely resolved.

Detailed explanation of the causes of

(1) the occurrence of the virus destroyed the vast majority of software failures caused by virus attack, because the virus destroyed files, thus resulting in error or not run. To resolve this type of software failure, the need for systematic and comprehensive anti-virus.

(2) start the operating system file is missing or applications, the need to use a lot of files, such as various virtual program. Close association with the application of dynamic link libraries, etc., if these files are accidentally deleted or damaged other causes, related equipment and procedures can not work or does not work.

(3) file version does not match the variety of applications install when the application program to the system, Fu Zhi Hui series of new Wen Jian or Genghuan now document which could lead to new and existing software, not software compatibility. Install new software and install the upgrade file, copied to the A1278 battery system in the majority of files are files, but files can not be compatible with existing software is to produce most of the main reasons for the illegal operation.

(4) resource conflicts are now more and more computer peripherals, more and more external devices can often cause the computer system resources reduced, leading to the phenomenon of resource conflicts occur. Resource conflict occurs, the light may cause the sound card, network card. Graphics. Printers and other equipment does not work, serious cases can cause the computer does not start, or crashes during the operation.

3, software fault diagnosis of ideas

To master the software, troubleshooting method, both need to understand computer hardware, system software and they need to be familiar with the relationship between application software. Although the reasons for software failure produced a lot, but some of the time of diagnosis can also follow the organization of writing. Failure in the diagnostic software can generally refer to the following method step by step:

Step diagnostic idea

1: Current computer work calm and observe the situation, for example to see if there are error messages displayed, whether a procedure is hard to read, whether abnormal noise, etc., which have preliminarily determine fault components.

Second: If the fault belongs to the software, to further confirm what the current environment in which software is running, run the system software or run other applications.

3: repeatedly tested to verify that the failure was inevitable or accidental, and caused a failure to fully pay attention to the environment and conditions.

4: COMS parameter settings carefully examined whether the requirements of the hardware configuration, hardware drivers installed correctly, the hardware resources, the existence of conflict.

5: detailed understanding of the system software version with the application of the match.

6: full points off the failure phenomenon occurs with the virus, killing the Dell mini 12 battery virus in time.

4. How to prevent the occurrence of the software so Chen

Software fault with the hardware failures, as many are preventable, the use of the software should try to do the following:

Notes

-: A new software is installed before you fully examine the compatibility of the software and systems.

2: a new software is installed before the installation of the software should be called good antivirus program operations, to ensure that newly installed software does not carry the virus.

3: in case of illegal operations and blue screen prompts carefully analyzed, according to the information to find fault because of its exclusion.

4: If you feel something wrong, he should observe the system resources occupancy, ferret out suspicious process.

5: When you delete an application, as far as possible to use the program’s uninstaller pulling load or unload from the control panel, should not manually delete the program files.

Cadmium – nickel battery discharge curve is more flat, generally 0.2C5A current discharge, discharge voltage stabilized at around 1.2V. Discharge capacity and quality of active material, electrolyte concentration, discharge temperature, discharge current and discharge mechanism and so on.

At low temperatures, electrolyte solution, electrical conductivity decreases, viscosity and concentration polarization becomes larger, the battery’s internal resistance increases, the battery’s capacity has been reduced. HP ProBook 4311s battery Cadmium – nickel battery discharge performance at low temperature are still better than the other battery. At high temperatures, the conductivity of electrolyte solution increases, viscosity decreases, the battery discharge capacity increases, but when the temperature Gao at 501: time, good efficiency down to positive charging, the battery performance degradation.

(1) homojunction solar cell from the same material composition of one or more semiconductor pn junction solar cell. Such as silicon solar cells, gallium arsenide solar cells and so on.

(2) heterojunction solar cells using two different band gap semiconductor material in the phase of the interface forms a hetero pn junction solar cell. Such as indium tin oxide – silicon solar cells, cuprous sulfide – cadmium sulfide solar cells and so on. If two similar heterogeneous lattice structure, the interface is better lattice match, then known as the solar surface heterogeneity. Such as aluminum gallium arsenide – GaAs heterojunction solar cells and other surfaces.

(3) metal and semiconductor Schottky contacts for solar cells to form a “Schottky barrier” of the solar cell, solar cells, also known as MS. The principle is based on the metal – semiconductor contact under certain conditions, can produce rectifying Schottky contact effects. Has developed into a metal – oxide – semiconductor solar cell, which MOS solar cells; metal – insulator – semiconductor solar cells, solar cells or MIS. Such as platinum – Silicon Schottky solar cells, Toshiba Portege T130 battery aluminum – silicon Schottky barrier solar cells and so on.

Second, in accordance with the materials classified

(A) in accordance with the different materials can be divided into the following categories.

(1) silicon solar cell silicon solar cell material as the matrix. Such as single crystal silicon solar cells, polycrystalline silicon solar cells, amorphous silicon solar cells and so on. Production of polycrystalline silicon solar cell material, with the purity of solar grade silicon is not too high, you can. The solar grade silicon metallurgical grade silicon by the simple process can be processed. Another strip of polysilicon materials, silicon, cast silicon, polycrystalline silicon and other films. Solar cells made with them are two kinds of film and sheet.

(2) inorganic compound semiconductor solar cells including: ① CdS solar cells to CdS single crystal or polycrystalline solar cells as the substrate material, such as cuprous sulfide – cadmium sulfide solar cells, cadmium telluride – cadmium sulfide solar cells, copper indium selenium ^ CdS solar cell, etc.; ② gallium arsenide solar cells to GaAs-based solar cell materials. HP ProBook 4510s battery As GaAs heterojunction solar cells, gallium arsenide heterojunction solar cell, etc..

(3) sensitized nanocrystalline solar cells to Ti02, Zn0, Sn02 and other wide band gap semiconductor oxide-based nano-electrode, using dye-sensitized, narrow band gap inorganic semiconductor sensitization, sensitization of transition metal ion doping organic dye / inorganic semiconductor-sensitizing and deposited on the surface Ti02 solar cell made of precious metals and other methods.

(4) organic solar cell with phthalocyanine, porphyrins, perylene, chlorophyll-based solar cell materials. Such as organic pn junction solar cell, solar cells and other organic Schottky type.

(5) plastic solar cells, such as polyacetylene solar cells, conjugated polymer / C40 composite solar cells and so on.

(B) The photoelectric conversion mechanism Categories

(1) Traditional solar cells absorb the photons are mainly those that produce electron – hole pairs (carriers) and carrier transport at the same time the solar cell. Such as silicon solar cells, CdS solar cells, GaAs solar cell and so on.

(2) exciton absorption of solar photons are mainly those that produce excited state, then the electronic transfer of the solar cell. Such solar cells absorb light energy and transmission charges are borne by the dye and semiconductor. Such as organic solar cells, plastic solar cell, Dell Studio XPS 13 battery quantum well cell (only in theory>.

Book focuses on organic solar cells, plastic solar cells, but because of this Type II cell theory is not perfect, is still drawing most of the traditional theory of solar cells.

In the battery production process, Compaq 6730S battery the quality of the same electrode (by mass capacity) and capacity of individual cells to the same (sub-capacity capacity) is used in combination constitute the basis for series battery. Technical indicators reflect the consistency of the battery is the uniform rate of battery.

It should be noted that the use of batteries, the same specifications, the same series of old and new batteries (and some, such as LR6 LR6 battery discharge) can not mix with the specifications of different family models, but the battery (such as the LR6 AA batteries and nickel cadmium batteries, LR6 and R6P batteries> can not be mixed, are Faraday’s Law requirements.