The chilled water double-coil machine room air conditioner uses the cold source of the outdoor chilled water host for cooling. The whole series is equipped with standard high-efficiency, low-noise EC fans, CAREL's new generation controller, and electric proportional chilled water regulating valve, so that the unit has the best cooling performance. The evaporator of the unit adopts a staggered double coil design, which achieves a perfect balance between safety and efficiency.
Overall frame structure description:
The overall frame and bottom plate of the unit are made of galvanized steel sheet whose outer surface has been electrostatically sprayed, so that the unit as a whole is not suitable for rusting. The unit structure is convenient and compact, occupies a small area of the machine room, saves space, and the unit supports full frontal maintenance. In the electric control box of the unit, the strong and weak currents are separated, and the high-power components such as electric heating and humidification are equipped with independent circuit breakers. The double-coil pipe connection positions are arranged on the left and right sides of the unit, which is convenient for on-site construction.
Control cabinet:
The original components of the computer room air-conditioning control cabinet are all internationally renowned suppliers, and the main control board is the Italian Carle brand. The main components of the air conditioner such as electric heating, humidification, fan, etc. have independent circuit breakers, which is convenient for engineers to maintain and debug the equipment. The control cabinet is also equipped with an emergency main load break switch, which can be conveniently used in emergency or special situations.
Control System:
Using CAREL's new generation controller, it supports a variety of control strategies to meet different control requirements:
- Local area network group control: It can realize functions such as round-robin and standby machine self-starting.
- The main control strategy can be changed on site: the unit is controlled by the outlet air temperature or the unit is controlled by the return air temperature.
- Control strategy of variable air volume: When the indoor load of the machine room is reduced, the unit will automatically link the control of the valve and the fan, so that the fan can work under partial load as much as possible to fully achieve the effect of energy saving.
- Support other control strategies such as: constant air pressure, constant air volume control strategy; air valve linkage control strategy; setting water flow control valve opening interval, etc.
- Perfect switching logic of chilled water double coils: In addition to the basic unit that uses water temperature as the switching condition of chilled water double coils, the unit also supports the control logic of two coils running at the same time.
Chilled water coil:
The chilled water coil is designed with a large flat plate, and the fins of the heat exchanger are treated with hydrophilic treatment, which can effectively improve the heat exchange efficiency. The pressure bearing capacity of the chilled water coil is greater than or equal to 16kg, effectively eliminating the hidden danger of leakage. The cold water double coil adopts a staggered design, making full use of all the fins of the unit during heat exchange, effectively improving the heat exchange efficiency.
For more information, please contact: Chilled Water Coils.