Daikin and Hitachi are compared as follows:
1, refrigeration
Hitachi air conditioning is one of the top ten brands of household air conditioning, and its brand awareness is world-famous, among which Hisense Hitachi air conditioning is the most eye-catching. Thanks to the frequency conversion technology of Hitachi air conditioner, Hitachi air conditioner is characterized by frequency conversion household air conditioner, which is small in size and stable in performance, and is one of the preferred brands of household air conditioner.
Daikin has 5,000 kinds of products in air conditioning and refrigeration, and its market share in Japan has always been the first. It is the only multinational enterprise in the world that integrates R&D, air conditioning, refrigerant and compressor production and sales.
2. Product performance
Hitachi mainly relies on imported high back pressure scroll compressor, and the compressor rotor is made of neodymium magnetic material, which improves the efficiency in an all-round way. The frequency conversion technology is first-class, but Daikin frequency conversion technology is more professional and has higher technical content.
As an air-conditioning manufacturer for nearly a hundred years, Daikin has been committed to professional air-conditioning services. Daikin's frequency conversion air conditioning technology has always been the most advanced in the world, and it has the reputation of "the father of frequency conversion in the world" in the refrigeration industry.
3. Technical aspects
Hitachi patented high-efficiency DC variable speed scroll compressor, stepless frequency conversion technology, imported Hitachi high back pressure scroll compressor, compressor rotor made of neodymium magnetic material, to improve efficiency in an all-round way. Adopting stepless frequency conversion technology, the running frequency of the motor can be adjusted freely to realize stepless frequency conversion.
Daikin has developed an indoor energy-saving air conditioner with induction function, with a built-in human body sensor, which can automatically identify the position and activities of the human body. Concentrate the air supply to the area where people live as needed. If there is someone indoors, it will automatically adjust to the low temperature, and when there is no one indoors for a long time, it will automatically close.
Extended data
Matters needing attention in purchasing air conditioners:
1. Due to the differences in room conditions and regional climate, as well as the plan for extreme weather, we should buy large air conditioners instead of small air conditioners.
2. Because the heating effect of air conditioners is lower than the cooling effect, and the applicable area in winter is smaller than that in summer, and everyone takes the heating index as the standard when buying air conditioners, so everyone should choose air conditioners according to the applicable area in winter. Of course, if you buy a single-cooled air conditioner, it depends on the applicable area in summer.
3. When buying an air conditioner, everyone should know the energy efficiency ratio of the air conditioner. The energy efficiency ratio of the air conditioner = cooling capacity ÷ cooling power. Therefore, the number of air conditioners should be unified, and energy saving with high energy efficiency ratio should be purchased.
References:
Baidu encyclopedia-Hitachi air-condition
References:
Baidu encyclopedia-daikin air-condition