Some systems use both capacity control systems which unload pistons but also utilize the hot-gas bypass to match demand. Arrived last week of January 2016 to KIG’s facility was this nice 2009 McQuay 50 ton Air Cooled Chiller. This is the newest Aquasnap series from Carrier, with improvements making them more efficient, quieter, and green too. Unit is 230 volt, and has the DIGITAL SCROLL compressor option which allows for smart and efficient control of the compressor for varying load conditions – down to 10% of load . Unit was run and tested prior to shipping, and offered with money back guarantee of functionality. It is 230 volt, has dual scroll compressors and comfort link controls. Unit has low ambient motormaster VFD fan drive for year round process cooling applications, yet equally as suitable for comfort cooling too. Unit was run and tested at KIG prior to shipping, and offered with money back guarantee of functionality.
Air conditioners allow for a precise regulation of air temperature and humidity level in more confined spaces. Air conditioners are used in homes, small buildings and some offices and the units vary in size and practical application. It lowers the freezing point of water and lets you maintain consistent temperatures in a chiller. Using the right ratio of glycol to water and the right amount of the mixture keeps your chiller working. There will need to be pipes to feed the proper glycol mixtures into your machinery and other pipes to circulate it as it cools. In order to keep it piped into the appropriate machines and kept at the right levels, you might need a customized build out of all the glycol supply lines and pipes.
The evaporator performs under continued certain pressure and makes all the liquid evaporate. Its function is to compress the low-temperature gas into a high-temperature gas and then exchange heat with other media in the heat exchanger. In the first part, we have learned the basic working principle of air-cooled chillers, now let’s delve deeper into some key components of these cooling machines. In the modern industry, Air Cooled Chiller plays a significant role to provide a steady cooling source. But for big capacity air-cooled chiller models, we always use semi-hermetic screw-type compressors like Bitzer from Germany and Hanbell from Taiwan China. An air-cooled chiller is the best selling chiller at TopChiller, 80% of TopChiller products are air-cooled chillers. If noise levels of the chiller are acoustically unacceptable, noise control engineers will implement sound attenuators to reduce chiller noise levels. Larger chillers will typically require an array of sound attenuators sometimes known as a silencer bank. Demountable chillers are also an option for deployment in remote areas and where the conditions may be hot and dusty.
After exchanging coldness with room air, which blows across the Air Handling Units (AHU’s) and fan coil units (FCU’s), the water is now warmer at about 12°C (53.6°F). It returns to the evaporator where the refrigerant absorbs the unwanted heat and directs it to the condenser. The chilled water is cool once again and it can now continue to cool the facility. Note how this is called “chilled water” throughout no matter the temperature. Air cooled chillers absorb heat from process water, and the heat is then transferred to the air around the chiller unit. In fact, it’s often practical to use the excess heat to warm a plant during the winter, thus providing additional cost savings. The Phoenix Plus twin-screw chiller also provides large-scale operation, but with regulation and efficiency at its heart.
The Cygnus Tech is also highly appealing to anyone focusing on air-cooled chiller efficiency, with environmentally friendly refrigerant R410A, and high seasonal efficiency levels. Like with water-cooled chillers, the process begins with the primary return bringing warm water to the chiller. Heat is transferred in the evaporator to the refrigerant, and the water runs through the primary supply to the cooled space. The refrigerant moves through the compressor to raise the pressure and temperature, and then it reaches the condenser. Here, fans circulate outside air through the condenser, which absorbs heat from the refrigerant before expelling this heat to the ambient air. The refrigerant then goes through the expansion valve and returns to the evaporator. Arrived at KIG in February 2016 was this never used, never installed , new 2014 Koolant Koolers / Dimplex Thermal 40 ton Air Cooled Chiller.
The air cooled screw chiller has good quality and reliable features. 2.2.2The air cooled screw chiller has high efficiency, less energy consumption, and low operating fee features. Whereas in water cooled chillers, water acts as condensing medium. The capacity of condenser depends on the refrigerant condensing temperature. There are some points – positive & negative that I’ve penned down about both type of chillers. You have to consider these points when deciding between air cooled & water cooled chillers. The Pathfinder is the most efficient machine on the market today – the first air-cooled screw chiller with IPLVs capable of exceeding 22 EER. It also includes an array of features that optimize sound, and deliver the lowest turndown in flow and highest leaving chilled water capabilities.
Our versatile range of high efficiency air cooled, water cooled, free cooling and remote condenser chillers gives customers a wide choice of cooling capacities from 20kW up to 3MW. This kind of screw-type compressor features high cooling efficiency, low noise, and long service life to ensure your air cooled chiller smooth running, high cooling performance with energy-saving. The Chiltrix small air cooled chiller compressor is fully variable in capacity and its operation is continuously adjusted to match the required heating or cooling output, avoiding on/off cycling and wasted energy. When measured on an annual basis, the average energy savings produced by the Chiltrix dynamic capacity system can exceed 40-50%. Manufactured in the United States the Air-Cooled Chillers from BV Thermal Systems are rigorously tested to ensure that chillers meetOur requirements before we would ship any unit to you. The Air-Cooled feature a hot gas by-pass which routes the hot, uncondensed refrigerant back through a reservoir coil thus eliminating the on/off cycling of the compressor. Utilization of the hot gas by-pass allows for greater stability and thermal protection for the pump, motor and compressor. On the other hand, industrial chillers incorporate refrigeration units in their cooling setup.
It has two Copeland scroll compressors, each pre-packaged in an Emerson condenser module with side air discharge, and situated one over the other. The dual heat exchangers are coil in tube, or coax type, and this is a true dual circuit machine. The R404a refrigerant offers less “de-rating” for low temp applications as compared to R410a. The controls are a super simple Ranco dual stage controller, and simple fan switching for low ambient. The tank is a separate module, in enclosure and insulated, about 300 gallons. Arrived at KIG in July 2015 was this pristine AEC-Sterling-Sterlco 7.5 ton Air Cooled Glycol Chiller. Please take into account de-rating of the actual cooling capacity (approx 25% to 35%) when cooling at lower temperatures like this. Unit was run, tested, and checked out thoroughly in our MA shop prior to shipping. Acquired by KIG in March 2015 was this nice 15 ton Carrier Aquasnap Air Cooled Chiller.
The exact speed will depend on your chiller’s design and the load needed by your location. A big part of the efficient operation of chillers relies on clean heat transfer tubes. If your system has mud, minerals, algae, or scaling it will coat the inside of the tubes and insulate them. While insulation is great at keeping heat out of a home in the summer the heat transfer in chillers is the cornerstone of how the system functions. Neglecting your chiller tube cleaning will end up inflating your operating costs and likely result in additional maintenance and more frequent downtime. This chiller maintenance checklist will help you ensure you catch all of the important areas of your chiller system. In this post we’ve provided an air cooled chiller maintenance checklist as it is the most common design. The refrigeration cycle starts with the heating of the combined liquids.
The first way to categorise a chiller is by defining whether it is a vapor compression or vapor absorption type chiller. Arrived at KIG in March 2016 was this nice Trane RTAA 125 Air Cooled Chiller with Dual Rotary Screw Compressors and R22 refrigerant. These are workhorses in the industry if you are familiar with chillers. This unit underwent some cosmetic sheet metal repair due to some slight mishandling during shipping. The unit was completely checked out by a licensed HVAC tech prior to shipping. System uses one 30 hp Scorll compressor, and the newer R407C refrigerant . Each unit was RUN and TESTED thoroughly in our Massachusetts shop prior to shipping. Because this is a split/remote condenser “2 piece” chiller system, this offer was for an untested system as-is. In its present form, the condenser does not have the “low ambient” winter package with fan switching/VFD controls to allow to run in less than 40°F ambient conditions. If you are in the cold winter environment, consult with us on cost to add this, or you can have your local contractor install also.
Has Micro Channel Coils, Coil Guards, and Low Ambient VFD option for year round cooling even in colder climates. Arrived at KIG in April 2016 was this nice Zarsky / Cold Shot 20 ton Air Cooled Chiller. Arrived at KIG in March 2016 was this 2014 Koolant Koolers 3 Ton “AVI Series” Air Cooled Chiller. It features a cleanable heat exchanger where the plates can be disassembled. It is ideal for dirty fluid or problem fluid, yet fine for clean water/fluid of course too. It has a 1 hp pump and is a “tankless” design, intended to draw from your tank/reservoir, through the heat exchanger, then back out to your process or holding tank. This is an indoor chiller, with fluid setpoint range of 50°F to 90°F.
Also based on cooling methods, chillers can be divided into air cooled chillers and water cooled chillers based on the cooling method. Each air cooled chiller manufactured from TopChiller has a built-in water tank and water pump, some of the charged refrigerant R407c, R410a and R134a are also available for high ambient temperature. Compa-Chill Central Air Cooled Whaley Chillers are used in industrial and commercial applications from central chilling of processes to HVAC. COMPA-CHILL has become the number one chilling equipment of choice, which incorporates new high efficiency Scroll compressors and stainless steel plate evaporators. Central chillers are designed to cool multiple processes with one chiller system. The multi-circuit design is used on critical process loads that absolutely cannot be down. WPI will provide complete water system design and plant process survey to determine cooling loads.