1, comfortable air conditioning: the air-conditioned rooms to meet the requirements of people's lives to the comfort of the human body to control the room's air parameters, such as home central air conditioning.

2, process air-conditioning: also known as constant temperature and humidity air conditioning to the indoor air temperature, humidity, air velocity, cleanliness and other parameters controlled in a certain range to meet the requirements of the production process, common, such as room air conditioning.

3, the amount of cooling: air conditioner cooling operation, the unit time, low-pressure side of the refrigerant in the evaporator to absorb the heat. Commonly used units for the W or KW.

4, heat pump heat: air conditioner heat pump heating operation (heat pump auxiliary electric heater should also run) unit time into the confined space, room or area of heat.

5, the coefficient of performance: cooling (heat) generated by the cooling (heat) and cooling (heat) by the power consumption ratio of the performance coefficient. Refrigeration called energy efficiency, with EER said: heating called performance The coefficient is represented by COP.

6. Refrigerant: Refrigerant, which is the refrigerant, is the working medium in the refrigeration system to complete the refrigeration cycle. The refrigerant absorbs the heat of the cooled object in the evaporator and evaporates the heat in the condenser to the surrounding air or The water is condensed into a liquid body, and the chiller is used for the purpose of cooling by means of the state change of the refrigerant.

7. Refrigerant: The refrigerant is an intermediate medium used to convey the cooling capacity in an indirect refrigeration system. The refrigerant is cooled by the refrigerant in the evaporator and sent to the cooling unit for cooling to absorb the cooled object or the environment Of the heat, and then return to the evaporator by the refrigerant to re-cooling, so continue to cycle, in order to achieve the purpose of continuous cooling.

8, fan coil: Central air conditioning system commonly used in the heat transfer equipment, by the fin tube and fan and other components, the refrigerant flow through the fan coil (tube) and the Department of air heat exchange, the air cooling. The coil is an air cooling device.

9, water-cooled chillers: water-cooled chillers are part of the central air-conditioning system in the refrigeration unit, the refrigerant for the water, known as the chiller, and the condenser cooling for the use of normal temperature water heat to achieve cooling, so called Water-cooled unit. Compared with the water-cooled machine called air-cooled unit, air-cooled unit condenser with the room air forced ventilation to achieve cooling purposes.

10, cooling tower: the use of air to get the water to cool the special equipment, usually installed in the top of the building in the refrigeration, electricity, chemical and many other industries, from the condenser and other equipment in the hot cooling water, The cooling tower is cooled and recycled.

11, VRV system: Variable Turbant Volume system is short, that is, refrigerant flow variable system. Its form is a group of outdoor unit, by the functional machine and constant speed machine, frequency converter. Through the parallel outdoor system, the cooling tube will be centralized into a piping system, which can be easily selected according to the capacity of the indoor unit. The suitable capacity of the indoor unit is selected from 122.5 to 1.5KW, that is, at most one outdoor unit Can connect 30 indoor units. Indoor machine with ceiling embedded, wall-mounted, floor and so on. Different types of indoor stand-alone can be connected to a refrigeration circuit, and can be a separate control. Indoor single minimum capacity of 0.6KW, up to 3.75KW, indoor unit capacity in the outdoor unit capacity of 50% to 130% within the regulation.

12. Module machine: in the VRV system based on the development, in 1985, by the Australian Jiefeng Group invented and applied for special. It will be the traditional freon pipeline into a water system, indoor and outdoor units into a refrigeration unit, indoor unit to fan coil. The cooling process is realized by the heat exchange of the refrigerant water, and the module machine is named as able to automatically adjust the number of the starting units according to the cooling load requirements and realize the flexible combination.

13. Piston chillers: Piston chillers are integral chillers for the use of chilled refrigeration compressors, auxiliary equipment and accessories, which are required to achieve refrigeration cycles. Piston chillers single cooling from 60 to 900KW, suitable for medium and small projects.

14. Screw chillers: screw chillers are chilled water to provide large and medium-sized refrigeration equipment. Commonly used in national defense scientific research, energy development, transportation, hotels, restaurants, light industry, textile and other departments of air conditioning, and water conservancy and electrical engineering with chilled water. Screw chiller is a complete refrigeration system consisting of screw refrigeration compressor, condenser, evaporator and self-control module and instrument. It has a compact structure, small size, light weight, small footprint, easy operation and maintenance, smooth operation to be advantages, which has been widely used. The single cooling capacity from 150 to 2200KW, for medium and large projects.

15. Centrifugal chillers: by the centrifugal refrigeration compressors and supporting the evaporator, condenser and throttle control device and the electrical table to form the entire chiller. Single cooling capacity from 700 to 4200KW. It is suitable for large and extra large projects.

16. Lithium bromide absorption chillers: to heat as the driving force to water as a refrigerant to lithium bromide solution for the absorbent, the preparation of 0 ℃ above the refrigerant water can be used as air conditioning or production process of cold source. Lithium bromide absorption type to thermal energy as the driving force, common direct combustion type, steam type, hot water type three, the cooling range of 230 to 5800KW, suitable for medium, large, large projects.