To calculate the volume, you must first determine how the solar water heater is packaged. The volume should be calculated separately based on the outer dimensions (length, width and height) of the solar water storage tank packaging box and the bracket packaging. box and vacuum tube packaging box. Then arrange according to the size of different categories, that is, a certain reasonable coefficient should be taken into account, and the average can be considered as 90%, that is, the volume logistics must be greater than approximately 10% of the actual calculated volume.
What is the difference between a solar calculator and a regular battery-powered calculator? How to charge it?
Solar calculators usually have button batteries as a backup. Open them and see if they are dead or no batteries are installed.
In general, light energy cannot be storedckée.
The following content is copied from Baidu Encyclopedia:
Usage
There are two types of calculators: standard type and scientific type. The method of using the standard. The type is:
1. When typing numbers, press the corresponding number key. If you press the wrong number, you can use the (CE) key to delete the value once and then enter it again. the correct number.
2. After entering the number directly, tap the multiplication sign to turn it into a multiplier. If you press the (=) key directly without entering the multiplicand, it will be the quadratic value of the number.
3. The square root (┌) key is used by default to calculate the quadratic root. Only scientific calculators can calculate multiple square roots.
4. Press the (+/-) keys to change the positive and negative valuess numbers.
5. After entering the numbers and determining the sign of the operation, pressing the (%) key will transform the result into a percentage operation. For example: 17+28 (%) = 17% + 28%, 1-90 (%) = 100%-90%
6. Some standard models have a digital storage function, which includes four buttons: MRC, M-, M+, MU. After typing the number, press M+ to read the number from memory. No matter how many steps you perform next, just press MRC once to play the previously saved number. Press M- to delete the number from memory, or press MRC twice. . MU is the interest rate calculation and the method of use is unknown.
7. It can also express a square: for example, the square of 10, you can press 10 then , otherwise how can we call it solar energy? 1: Determine whether the internal battery is a rechargeable battery or an o batteryordinary 2: If the battery is charged by solar energy and the battery is used to power the calculator, or if the battery and solar energy can separately power the calculator, and the solar energy is used for purposes emergency. 3: If so, the silicon photovoltaic cell should only be placed under ordinary light. It is only used as an auxiliary power supply for the battery. There are also single silicon photovoltaic cells that can power the computer. normal use. Without this type of battery, it cannot be used if the regular battery is discharged.