Huazhao Refrigeration Equipment Blog

  Often asked the question of which is better air-cooled and water-cooled, the next  air-cooled chiller supplier  will discuss with you to compare air-cooled and water-cooled how to choose combined with practical experience to do the following discussion.   ​Difference between air-cooled chillers and water-cooled chillers 1.System structure Air-cooled chiller  units use the air cooling method (fan cooling); water-cooled units use the cooling water cooling method, by the pump plus cooling tower and circulation pipeline to the unit for circulation cooling. From the installation mode of water cooling, it can be divided into two types: built-in water cooling and external water cooling. For built-in water cooling, it mainly consists of radiator, water pipe, water pump and sufficient water source, which predestines most water cooling cooling systems to be large in size and requires sufficient space in the chassis. Therefore, air-cooled units require only an air-cooled...

  A  chiller  is a machine that removes heat from a liquid coolant via a vapor-compression, adsorption refrigeration, or absorption refrigeration cycles. This liquid can then be circulated through a heat exchanger to cool equipment, or another process stream (such as air or process water). As a necessary by-product, refrigeration creates waste heat that must be exhausted to ambience, or for greater efficiency, recovered for heating purposes.   Chilled water is used to cool and dehumidify air in mid- to large-size commercial, industrial, and institutional facilities. Water cooled chillers can be liquid-cooled (through cooling towers), air-cooled, or evaporatively cooled. Water or liquid-cooled systems can provide efficiency and environmental impact advantages over air-cooled systems.   Chillers are widely used as portable cooling systems in commercial and industrial facilities. In simple terms,  industrial chillers  can be thought of as cooling systems ...

 According to the Department of Energy (DOE), chillers consume around 20% of the country's total electricity production. What's more, they can add up to 30% of a building's additional energy use due to operational inefficiencies. This costs companies and building facilities billions of dollars every year. Today, commercial buildings are fitted with highly efficient HVAC systems designed to improve the sustainability and performance of the building. This brings us to  water-cooled chillers , which are an essential HVAC component for a variety of commercial facilities. Read on to find out more about water-cooled chillers and whether it's right for your facility. Features of a water-cooled chiller Water-cooled chillers are the chillers of choice for power plants and other large facilities with a steady water supply.        Flooded Type Screw Type Chiller In particular, chillers help to transfer heat from the internal environment to the external environment, ma...

  Chiller performance  varies greatly with operating conditions. Full-load performance is not a good indicator of overall performance because chillers rarely operate at full load. Instead, part-load performance is critical to good overall chiller performance. Refer to ASHRAE Standard 90.1-2001, which lists minimum chiller efficiency requirements. There are several variables that can affect the efficiency of a chiller.   1. Controlling the flow rate The flow rate must be closely regulated, as too low a flow rate can reduce the efficiency of the chiller, resulting in laminar flow. The minimum flow rate is usually about 3 feet per second. However, excessive flow rates can cause vibration, noise and pipe corrosion. The recommended maximum flow rate is usually about 12 feet per second.   2. Keeping the Refrigerant Charged The amount of cooling any cooler can provide depends on the amount of refrigerant it passes through the compressor per unit time. It is important to mai...

  A chiller or   chilled water system   is a type of refrigeration system that uses water as a secondary refrigerant. They are used in larger and more complex heating, ventilation, air conditioning and refrigeration (HVACR) applications. Typical applications for chillers are listed below.   ㆍ District cooling ㆍ Central air conditioning ㆍ Hydroponics ㆍ Food and beverage processing ㆍ Pharmaceutical and medical ㆍ Cold Storage ㆍ Thermal Energy Storage (TES) systems ㆍ Machining, waterjet cutting, laser cutting, welding, etc. ㆍ Plastic processing    Water Cooled Screw Chiller As opposed to chillers, direct expansion (DX) refrigeration systems cool air directly from the room or enclosed space without the use of secondary refrigerants. The DX type is more suitable for smaller applications, such as residential space cooling and small freezers and refrigeration units.   Principle of operation Chiller systems  consist of two main loops or circuits. These are...

  Like any critical piece of equipment in a commercial facility, chillers require regular maintenance to maintain efficient and effective operation. A poorly maintained chiller can add 10% or more to the cost of running the system, which is likely already one of the largest consumers of power in your facility.   Whether you use a traditional scheduled maintenance program or modern technology to monitor your chillers for on-demand maintenance needs,  regular chiller maintenance  makes sense from a performance and cost perspective. Here are nine tips you can use to enhance your chiller's regular maintenance and keep this vital piece of commercial equipment in the best and most economical condition.   Keep a daily log: A daily log of  chiller operation  will create a historical record that will give you an idea of equipment operating trends that may affect chiller maintenance needs. Record information such as operating temperature, liquid level, flow rate...