What Does an HVAC Controls Technician Do?

The cold and heat sources in the intelligent building of the HVAC control system mainly include cooling water, chilled water and hot water preparation systems. On the premise of meeting the requirements for use, the power consumption of the pump is reduced as much as possible to achieve energy-saving operation.

HVAC control system

Monitoring of new wind turbines

The air-to-water heat exchanger in the new fan unit. Cooling water is supplied to cool and dehumidify the fresh air in summer, and hot water is heated to dry the air in winter.

The cold and heat sources in the intelligent building mainly include cooling water, chilled water and hot water preparation systems, and their monitoring characteristics are as follows:

Monitoring of cooling water systems

The role of the cooling water system is to provide cold water to the refrigerating machine through the cooling tower and the cooling water pump and piping system. The monitoring purpose is mainly to ensure the safe operation of the cooling tower fan and the cooling water pump; ensure that sufficient cooling water passes through the condenser side of the refrigerator; Adjust the operating conditions of the cooling water according to the outdoor climate and cooling load, so that the cooling water temperature is within the required setting range.

Monitoring of chilled water systems

The chilled water system consists of a chilled water circulation pump connected to the evaporator of the chiller through the piping system and various cold water equipment (such as air conditioners and fan coils) of the user.

The purpose of monitoring it is mainly to ensure that the evaporator of the refrigerator passes enough water to make the evaporator work normally; provide sufficient water to the users of frozen water to meet the requirements of use; and reduce the power consumption of the pump as much as possible under the premise of meeting the requirements To achieve energy-saving operation.

Monitoring of hot water preparation systems

The hot water preparation system uses heat exchangers as its main equipment, and its function is to generate hot water for living, air conditioning and heating. The main purpose of monitoring this system is to monitor the hydraulic working conditions to ensure the normal circulation of the hot water system and control the heat exchange process to ensure the required hot water supply parameters.