Calculating chiller and cooling tower refrigeration - in tons Cooling towers tons pairs the water-cooled chiller tons and the water-cooled condenser tons.  Chiller Refrigeration Tons The process of cooling is called refrigeration. Refrigeration or cooling capacity can be measured in tons. A water-chiller refrigeration ton is defined as: 1 Refrigeration Ton (RT) = 1 TONScond = 12000 Btu/h = 200 Btu/min = 3025.9 k Calories/h = 12661 kJ/h = 3.517 kW 1 kW = 0.2843 Refrigeration Ton (RT) A ton is the amount of heat removed by an air conditioning system that would melt 1 ton (2000 lbs.) of ice in 24 hours. The heat required to melt 1 lb of ice at 32 oF to water is 144 Btu. 1 Ton Refrigeration = (2000 lb) (144 Btu/lb) / (24 hr)     = 12000 Btu/hr Converting between Btu/h and Tons of Refrigeration Btu/h Refrigeration Ton 6000 1/2 12000 1 18000 1 1/2 24000 2 30000 2 1/2 36000 3 42000 3 1/2 48000 4 54000 4 1/2 60000 5 Cooling Tower Tons A cooling tower ton is defined as: 1 cooling tower ton = 1 TONSevap = 1 TONScond x 1.25 = 15000 Btu/h = 3782 k Calories/h = 15826 kJ/h The equivalent ton on the cooling tower side actually rejects about 15000 Btu/h due to the heat-equivalent of the energy needed to drive the chiller's compressor.

This equivalent ton is defined as the heat rejection in cooling 3 U.S. gallons/minute (1500 pound/hour) of water 10°F, which amounts to 15000 Btu/hour, or a chiller coefficient-of-performance (COP) of 4.0 - a COP equivalent to an energy efficiency ratio (EER) of 13.65. Heat Load and Water Flow A water systems heat load in Btu/h can be simplified to: h = cp ρ q dt     = (1 Btu/lbm oF) (8.33 lbm/US gal) q (60 min/h) dt     = 500 q dt         (1) where h = heat load (Btu/h) cp = specific heat, 1 (Btu/lbm oF) for water ρ = 8.33 (lbm/US gal) for water q = water volume flow rate (US gal/min) dt = temperature difference (oF) Example - Water Chiller Cooling Water flows with 1 gal/min and 10oF temperature difference. The ton of cooling load can be calculated as: Cooling load = 500 (1 US gal/min) (10 oF) / 12000     = ton Converting between heat and energy units Converting kW/tonn to COP or EER en: cooling load tonses: enfriamiento de toneladas de cargade: Kühllast Tonnen

Need some Expert Advice? JustAnswer can help you! carrier hvac rooftop unitsTalk with a verified expert until your satisfied, 100% money- back guarantee.hvac units depreciation Search the Engineering ToolBoxcost of 2 ton rheem ac Engineering ToolBox - SketchUp Extension - Online 3D modeling! Add standard and customized parametric components - like flange beams, lumbers, piping, stairs and more - to your Engineering ToolBox - SketchUp Extension/Plugin - enabled for use with the amazing, fun and freeAdd the Engineering ToolBox extension to your SketchUp from the Sketchup Extension Warehouse!The sizing chart below is useful to help you determine your approximate central air conditioner size requirements. If you still need help, don't worry!

Chat with or call one of our factory trained advisors to help get you the answers you need. As an alternative to the sizing chart below we offer MANUAL J - a professional load calculation based on your floor plan, location, and all variables. Please follow the link below for pricing. The turnaround for this service is 1-2 days. MANUAL J Residential Load Calculation Air Conditioning Square Footage Range by Climate Zone In order to scientifically calculate the right central air conditioner size, you can perform a Residential Load Calculation. Another way to size air conditioners is to determine the system size that is currently in place. The manufacturers do not list the air conditioner size on the unit. The system capacity will be coded into the model number of the outdoor unit. For example, model CKL24-1 is a 2 ton unit. There are 12,000 Btu's per ton. The number 24 in the model number indicates the unit is 24,000 Btu's, divided by 12,000 Btu's per ton, equals 2 tons.

24,000 Btu's/12,000 Btu's per ton = 2 tons Use the following conversion information to determine your existing system size (use the system model number NOT the serial number) 18 = 1.5 tons 24 = 2 tons 30 = 2.5 tons 36 = 3 tons 42 = 3.5 tons 48 = 4 tons 60 = 5 tons When sizing air conditioners, be careful not to make the mistake of getting one that is too large. If the system you install is too large for the space, it will short cycle. In other words, the compressor will not run long enough to dehumidify the space and will limit your comfort. In addition, it will cycle on and off more frequently, increasing operating costs and reducing the system life. Proper air conditioner sizing is critical to optimize performance. If you're still unsure which system size is right for you, or if you're having difficulty downloading the Air Conditioner Size Calculator , please e-mail us or call us toll free number at 1-855-634-5588. Sizing air conditioners by phone is difficult but we can provide you with the tools to get you started.

Heating Square Footage Range by Climate Zone Use the lower of the two numbers if your home is well insulated and the higher number if it is older or poorly insulated. (Hint: Use the larger of the two numbers above if you're unsure of your home's insulation) Simply multiply the appropriate factor above by your home's total heated square footage to arrive at your approximate required heating capacity. For example, if you live in the yellow zone, your home is well insulated, and you have 2000 heated square feet, the equation will look like this: X .40 heating factor (from the chart above) 80,000 Btu actual output Then, to calculate the output on a gas furnace, multiply its efficiency rating by its listed input rating for the actual Btu output of heat. For example, if a furnace has a listed input rating of 100,000 Btu's and an efficiency rating of 80%, it will produce If the same 100,000 Btu furnace has an efficiency rating of 93% it will produce: 93,000 Btu actual output

For this example, using an 80% efficient furnace, the 2000 square foot home above would require a 100,000 Btu input furnace which will produce the necessary 80,000 Btu's output of heat. If you're still unsure which system size is right for you, please e-mail us or call our toll free number at 1-855-634-5588. An experienced design technician will be happy to assist you. Variables such as your insulation, type and number of windows, number of stories, construction type, etc. will greatly affect the required Btu's per square for both heating and cooling. A general rule of thumb is that if your home is well insulated with newer style windows, you can select the smaller size system that falls within your total square footage. If your home is two story it will place less of a load on the system in the downstairs area as the second floor acts as additional insulation. If your home is not well insulated, has older style windows, and/or a larger than average number of windows, you will want to select the larger system which falls within your square footage range.