Is it true that a pile of plastic bottles can be transformed into a “no electricity” air conditioner

At present, this is only theoretical knowledge and has not yet been implemented in life.

1. Theoretically, letting air seep into the small holes from the large holes, then blowing, has a cooling effect that reduces the air pressure from high pressure to low pressure.

Just like refrigerant When it passes through the front (high pressure) end of the expansion valve and enters the rear (low pressure) end of the expansion valve, it has a pressure and cooling effect. However, air is not a refrigerant after all. , and the thermal enthalpy of air is much smaller than that of the refrigerant.

2. Although the air can also be cooled by the pressure reduction, the temperature drop is too limited. It is estimated that it can only drop by 2 to 3 degrees at most.

The inherent defect of this type of air conditioner is that there is no forced air flow (there is nono fan to drive the airflow, just like there is no forced external force like using electricity to drive the compressor. to circulate the refrigerant system). When there is no wind today, air simply does not flow from so-called high pressure (outside the window) to low pressure (outside the window). interior) to create air conditioning.

I want to make a wind turbine to turn on 12V LED lights. How to make an inverter? Find the circuit diagram

(1) The power loss of the transmission line Line P = 100 × 4% kW = 4 kW and Line P = Line I22R

The transmission line current I2=I3=20 A< /p>

Input current I1 in primary coil=

Donc

This way U2=U1

U3=Line U2-U= 5000-20×10 V= 4800 V

So

(2) As shown in the figure

(3)(3) The electrical power obtained by the user, i.e. say the output power of step-down transformer is

P usage = P-P loss = P (1-4% )=100×96%?kW=96 ?kW

Answer: ( 1) The transformation ratios of the primary and secondary coils of the step-up and step-down transformers installed in the transmission line are

(2) As shown in the figure

(3) User. The electrical power obtained is 96 kW

The process of converting low voltage direct current into alternating current and increasing it is called inversion. /p>

Does your wind turbine have 12V? p> If your wind turbine is direct current and really less than 12V, it is also recommended not to use an inverter and only use LED light-emitting tubes depending on the model. type, the voltage is generally more than 1 V to more than 3 V. Use a resistor.

High power LEDs are also driven by driver modules

. p>

If your generator is AC, that's fine. Use a direct transformer to step up or down the voltage, then rectify, filter and stabilize the voltage you need for LED lights