Generally speaking, high-precision constant temperature and humidity air conditioning control is widely used in factories, workshops, laboratories, operating rooms, computer rooms, warehouses, high-end office buildings and other buildings. In these buildings, the temperature and humidity environment will not only affect the comfort of personnel, but more importantly, it is often closely related to factors such as product quality in the workshop, safety of personnel during surgery, and stability of important equipment in the computer room. If the proper temperature and humidity environment cannot be maintained stably for a long time, it will greatly affect the effectiveness of the facility. What are the general requirements for high-precision constant temperature and humidity air conditioning control in computer rooms? For example:
The control objects are mostly fresh air air conditioners or combined air conditioners;
Control requirements: temperature accuracy <±２℃; humidity accuracy <±10%; constant air volume or constant pressure air supply;
Control objects: preheating section, cooling section, heating section, humidifier, reheat section or variable frequency fan section in the high-precision constant temperature and humidity air conditioner for the computer room;
Control method: The temperature, humidity, pressure or air volume sensor installed in the air duct or indoor transmits the signal to the controller, and the controller outputs the signal to the electric water/steam valve, electric heater, air valve actuator or inverter after specific calculation to adjust the opening or working status of these devices;
Energy saving requirements: Since the constant temperature and humidity system generally runs 24 hours a day and consumes huge energy, a reasonable energy-saving design can help users save a lot of costs. Generally, energy saving goals are achieved through two ways: reasonable control procedures and the installation of energy-saving equipment. Linkage requirements: The air conditioning box control generally needs to be linked with exhaust, fire protection and other equipment, and when a situation occurs, the corresponding control is executed;
Operation requirements: The controller provides on-site display and operation functions, and is generally installed in a location that is easy to operate on site; and has communication capabilities, which can transmit data to a computer workstation to record and print important data;
Maintenance requirements: Since the reliability of the constant temperature and humidity system is of great importance, first-class imported equipment is generally used, and the design life of the electric valve and controller is more than 10 years; the design life of the sensor is more than 3 years; users also need to pay attention to the continuity and supply cycle of these products to facilitate maintenance and replacement.