H.Stars (Guangzhou) Refrigerating Equipment Group Ltd.

  Central air conditioning can be classified into three main types: electric refrigeration air conditioning, lithium bromide refrigeration air conditioning, and other energy source air conditioning. Among them, electric refrigeration air conditioning is the most commonly used form of air conditioning. Let's discuss the classification of electric refrigeration air conditioning in detail. I. Classification by Cooling Method Air-cooled: The condenser uses forced air convection for heat exchange. This type is commonly used in residential air conditioners. Air-cooled air conditioners can be categorized into single cooling type and heat pump type. The single cooling type is only used for cooling in summer, while the heat pump type can provide both cooling in summer and heating in winter. Water-cooled: Heat dissipated by the condenser is cooled using water flow. In order to save water, the cooling water discharged from the condenser is pumped to the cooling water tower, where it undergoes...

  Extended use of condensers in   HVAC systems   often leads to the formation of scale deposits in the pipes. If not addressed promptly, these deposits can compromise heat exchange efficiency, resulting in elevated condensation temperatures, reduced cooling capacity, and increased power consumption. Regular scale removal is crucial for maintaining optimal system performance. Methods for Scale Removal and Prevention: Mechanical Descaling Method: Procedure: Evacuate refrigerant from the condenser. Close all valves connected to the refrigeration system. Supply cooling water to the condenser. Use a flexible shaft cleaner with a rotating scraper to gently remove scale deposits. Employ circulating cooling water to cool the scraper and flush removed debris into a collection tank. Considerations: Choose an appropriate scraper diameter for effective yet non-damaging descaling. Conduct the process in multiple passes for thorough scale removal. Chemical Cleaning Method: Procedure: P...

  In the design and operation of data center air conditioning systems, accurately calculating the cooling capacity is a key factor in ensuring efficient and stable operation. This article delves into the methods of calculating cooling capacity and its application in different types of  data centers. 1. Methods for Calculating Cooling Capacity Calculating cooling capacity is the foundation for assessing the air conditioning needs of a data center. The main methods include the power and area methods, taking into account the heat generated by equipment and the environmental heat load. ​ Formula: Total Cooling Capacity (Qt) = Indoor Equipment Load (Q1) + Environmental Heat Load (Q2) Q1 = Equipment Power × 1.0 Q2 = 0.12~0.18 kW/m² × Data Center Area 2. Precision Air Conditioning and Cold Load Estimation For precision air-conditioned spaces such as data centers, cold load estimation needs to consider factors such as equipment heat load, environmental heat load, lighting, and personn...