Generally, the size of household single-door refrigerator is generally 550x500x865mm, and 10 cm is reserved for air conditioning heat dissipation, and 650 mm should be no problem.

Extended data:

First, the working principle of the refrigerator:

1) compression refrigerator: this refrigerator is provided with mechanical energy by a motor and works on the refrigeration system through a compressor. The principle of refrigeration system is that the refrigerant with low boiling point absorbs heat when it evaporates. Its advantages are long service life and convenient use. 9 1 ~ 95% refrigerators in the world belong to this category. Commonly used refrigerators use a refrigerant called R600 refrigerator A as a hot "porter" to "carry" the heat in the refrigerator to the outside of the refrigerator.

2) absorption refrigerator: this refrigerator can use heat sources (such as gas, kerosene, electricity, etc.). ) as a driving force. Ammonia-water-hydrogen mixed solution realizes refrigeration in the process of continuous absorption-diffusion. Its disadvantages are low efficiency and slow cooling, which has been gradually eliminated.

3) Semiconductor refrigerator: It is a refrigerator that produces Peltier effect at the junction by applying direct current to PN semiconductor.

4) Chemical refrigerator: It is a refrigerator that uses some chemicals to absorb heat strongly when they are dissolved in water to obtain refrigeration effect.

5) Electromagnetic vibration refrigerator: It is a refrigerator with electromagnetic vibration machine as the main power to drive the compressor. Its principle and structure are basically the same as that of the compression refrigerator.

References:

Baidu encyclopedia-refrigerator