Offered by KIG in October 2019 was this nice 2000 AEC/Sterlco 15 ton air cooled chiller. Refurbished and tested at our Clinton, MA shop, where it was cleaned, painted, checked and leak tested, and run for several days and monitored. 460v, 3p, power, has scroll compressor, and 30°F to 65°F fluid temperature range. This is an indoor chiller, yet the exhaust can be ducted outside if you choose . We have provided dozens and dozens of these units over the years and they are well-built true workhorses. Arrived at KIG in September 2014 was this 15 ton Air Cooled Chiller made by Affinity. This is an outdoor rated chiller , and has VFD drives for the fans, for low ambient year round outdoor process cooling capability. This unit was run and tested at KIG prior to shipping, and a run-off video provided, with money back guarantee of functionality. Air chillers can be split in various configurations or used as a single piece unit. Air chillers vary in size from small capacity to 100+ ton models that are used to cool commercial buildings.
Kaltra announced the commercial launch of scroll chillers that expands an existing lineup of condenserless and water-cooled models with air-cooled version. The Severn Group delivers high-quality service to its clients from conceptual design through project punch list. Design review, estimating, and administrative resources are staffed from our headquarters in Maryland. View our entire process equipment inventory online or visit our location for an equipment inspection. At G&D, we’re partners for life – offering modular designs for expansion & servicing every customer from start to finish. These Modular units can be utilized with any existing chilling system, helping to increase chilling capacity as you grow. Maintenance – To keep your water-cooled chiller running strong, it will need timely inspections, water purity treatments, and routine cleanings. Quiet operation – Water flows through the system relatively quietly, making a water-cooled chiller ideal for low noise environments, such as hospitals. Long-lasting – Water-cooled chillers live indoors where they’re protected from damaging elements like snow, ice, rain, and heat, which helps extend their lifespan.
You might need to use chillers with multiple compressors that can work independently from one another so that if 1 compressor fails the chiller can still remain partly operational. Instead you should use multiple chillers, in parallel, of different sizes to meet the changing seasonal load at optimal performance with redundancy built in. For example you have a building with a cooling load of 2,200 Tons, then you should use combinations such as two 1,200 ton chillers or two 900 tones and a 500 ton or a 1,000 ton and two 700 ton chillers etc. Vapor absorption chillers will use a heat source to move the refrigerant around the system rather than using a mechanical compressor. The refrigerant in these chillers move around between areas of different temperature and pressure. Arrived in March 2014 to KIG were four immaculate Trane RTAA 125 ton chillers. Removed from a local Data Center where it was used relatively minimal, and the Data Center has been shut down. Units are in pristine condition, have been expertly maintained, and have VFD low ambient option for year round operation. Has variable speed fan drive LOW AMBIENT option ideal for year round operation / process cooling. Arrived at KIG in July 2015 for refurbishment and testing was this solid Advantage 10 ton Air Cooled Chiller.
Sound readings were conducted after construction when the chiller was fully loaded and sound values were determined to be below the city code ordinance. In the AHUs and FCUs, the chilled water is passed through a heat exchanging coil to reduce the temperature of the coil. The chilled water that exits a chiller is called the chilled water supply . Kaltra is a customer-focused developer and supplier of reliable, energy efficient thermal management equipment and solutions. Efficiency improvements may vary depending on the number of hours the chiller runs in different cooling modes. Figures 2, 3 and 4 show the annual operating modes in Northern Europe, Southern Europe, and in the Middle East, respectively. For any of the above-mentioned locations, evaporative chillers demonstrate significantly higher efficiency values compared to those obtained with the legacy solutions. The primary difference between air and water chillers is how the unwanted heat is ejected. Air chillers us air to remove heat while water chillers use, you guessed it, water.
The simple presence of oxygen in water can cause corrosion, but if the water and pipes are treated properly, this can significantly reduce the risk. However, if the water treatment is inadequate, sediment, minerals, and bacteria can enter the system. If there is a buildup of sediment or bacteria that causes oxygenation levels to differentiate, the metals can begin to corrode. In addition, any point where two different metals are used can be at risk for corrosion due to their different electrochemical properties. No matter how the corrosion occurs, it can cause leaks that will damage the chiller, reduce its efficiency, and possibly damage the area surrounding the chiller. Air-cooled chillers are more prevalent in small to medium sized facilities where space and water may be limited. The costs to install and maintain these chillers are lower than that of their water-cooled counterparts, but they typically have a shorter lifespan. These chillers are commonly used for restaurants, corporate and sporting events, and temporary structures.
They have commonly been used for medium and large installations that have a sufficient water supply. Water-cooled chillers can produce more constant performance for commercial and industrial air conditioning because of the relative independence to fluctuations of the ambient temperature. Water-cooled chillers range in size from small 20-ton capacity models to several thousand-ton models that cool the world’s largest facilities such as airports, shopping malls and other facilities. A chiller uses a vapor compression mechanical refrigeration system that connects to the process water system through a device called an evaporator. Refrigerant circulates through an evaporator, compressor, condenser and expansion device of a chiller. A thermodynamic process occurs in each of above components of a chiller. The evaporator functions as a heat exchanger such that heat captured by the process coolant flow transfers to the refrigerant. As the heat-transfer takes place, the refrigerant evaporates, changing from a low-pressure liquid into vapor, while the temperature of the process coolant reduces. An air-cooled chiller works by absorbing the heat from processed water.
The final takeaway is that water-cooled chillers have a longer life, higher efficiency, larger capacity and refrigerant containment. Air-cooled chillers have a lower efficiency, yet are getting much better with technology advances, lower maintenance costs and less to install. If you have specific questions about air-cooled chillers vs. water-cooled chillers for your facility, contact The Severn Group. Our HVAC Systems experts are here to answer all of your questions. The innovative Multi Stage chiller utilizes multiple compressor circuits. Designed with efficiency in mind, these chillers run on an as-needed basis, which is ideal for applications with varying load requirements. Industrial chillers are essential for keeping your equipment cool throughout its various processes.
Air cooled screw chillers are also able to cool the paper when it comes out of the ink drying ovens. Strengthening maintenance management and reducing water consumption are important aspects of reducing the cost of water-cooled screw chiller. It is more advantageous to use an air-cooled chiller unit for a refrigeration system with longer annual operating hours. Water-cooled screw chillers are less expensive than air-cooled screw chillers in terms of product cost and operating expenses. An air-cooled screw chiller, instead, generally will not exceed 3 meters in height and much shorter than a cooling tower. The cooling tower is often installed inside the building, which not only creates a negative impact on the building’s appearance but also is disharmonious with other objects on site. As there is no need for a water cooling system, air-cooled screw chillers actually have simplified the cooling system.
Chillers use coolant/chiller fluid which may be cooled by air or water in their associated condenser. This is the basis for the differentiation into water-cooled and air-cooled chiller variants. This device removes heat from a load and transfers it to the environment using a refrigeration system. This heat transfer device is the preferable cooling machine in power plants and other large-scale facilities. It is simply a system consisting of ethylene + water or water reservoir and circulation components. The cooling fluid is circulated from the reservoir to the equipment undercooling. There are also air-cooled chillers, which disperse heat-using fans. In this post, we review the difference between the two technologies, leaving the choice of which one to pick to you.
These 5 ton Koolant Koolers chillers went through refurbishment here at KIG. They feature a robust tube type rectangular exchanger which is cleanable. Fabricated and installed a new stainless reservoir tank, and an appropriate centrifugal water pump .The units were piped in a “closed loop” configuration. We can provide the unit without a tank, for an open loop application for a reduced price . Arrived at KIG in December 2015 were three Zarsky / Cold Shot 5 ton Air Cooled Chillers. 460 Volt, 5 hp Copeland compressor, OUTDOOR rated, and LOW TEMP (28°F fluid temp) capable. Units were run and tested completely at 28°F at our 13,000 square foot facility prior to shipping, and offered with money back guarantee.
A chiller equipped with a fixed speed compressor controls the temperature of the water traditionally with simple on/off of the compressor. This means that when the compressor runs, it runs at the designed load regardless of the process needs. A more advanced option is a hot gas bypass which technically keeps the chiller running but bypasses the hot gas if no cooling load is needed. This avoids the on/off of the compressor but results in a waste of energy since no cooling is required from the process. The Delta T Systems “VS Chiller” with the variable speed compressor operates effectively between 10% and 100% of its rated capacity. This means a 10 ton chiller can operate very efficiently as a 1 ton as well as up to a 10 ton chiller. This new design applies proven, variable speed “green” compressor technology from the HVAC industry to produce up to a stunning 50% energy savings over traditional hot gas bypass regulation. These energy cost savings can pay for the chiller investment in less than 3 years. In addition, utility companies may offer purchasing incentives and rebates.
Each type may have subcategories based on how each of them accomplish this goal. Technology varies and depending on the age of the building you own or manage the type of chiller you have may fit into one of the following categories. If you are searching for Types Of Chillers, this post should help! Industrial chillers are an integral part of keeping large commercial buildings comfortable during the warmer months. They typically work in conjunction with a cooling tower which helps reduce the overall temperature of the cooling system. There are two main categories of chillers, these are air and water chillers. Water cooled chillers take up space within the building, they need mechanical plant rooms, more risers, more pumps, cooling towers and water treatment, this space therefore can’t be used for business purposes. This Trane CGAF 30 ton Air Cooled Chiller has NEVER been used and has 0 hours on it.