Chiller Rentals:

 

There are many circumstances that would require the renting of a Chiller, or for that matter, Air Conditioners, Dehumidifiers, Cooling Towers, Heat Exchangers and other HVAC related rental temperature control equipment. 

 

Once you have determined that a Rental Chiller or other piece of HVAC rental equipment is required, you must determine how to size it and determine the appropriate application.

 

The chiller rental information contained here on ChillerRental.com is designed to help you with some basic refrigeration guidelines for sizing chillers and air conditioners for rental purposes.  Sometimes you will know exactly what’s required, but applying the following guidelines in specific situations may be helpful.

 

Here are some examples:

 

1. You need a rental chiller, air conditioner, cooling tower or other piece of HVAC equipment for planned maintenance or replacement of an existing piece of equipment.  You know your existing equipment functioned properly and you know or can determine its size.

 

• Using your current chiller or other piece of HVAC equipment’s actual size is the easiest way to determine sizing for rental purposes. 
• Size can usually be determined from the model number of the chiller, and if you purchased the equipment new, you should have manuals and possibly even Submittal Data from the manufacturer.
• Trane, Carrier, York and McQuay are a few examples of the major manufacturers of chillers and HVAC equipment.
• When confirming chiller size, Original Submittal Data is the best source.  This data will provide the size, flow rates, water temperatures and technical info about the chiller or other piece of HVAC equipment.

 

2. You need a rental chiller or cooling tower for a cooling process or temporary replacement of a piece of existing equipment, but are not sure how to size it.

 

The basic formulas for calculating chiller or cooling tower heat loads require that you know the Gallons per Minute (GPM), the change in temperature of the water or fluid through your process – known as “Delta T” (DT), and that 1 ton = 12,000 BTU.

 

• Chiller Duty Required (Tons) = GPM multiplied by DT divided by 24.
• Cooling Tower Duty Required (Tons) = GPM multiplied by DT divided by 30.
• These “Rule-of-Thumb” formulas and Chillers are best utilized with a Low Water Temperature (LWT) near 45°F and water as the fluid being chilled. 
• These “Rule-of-Thumb” formulas and Cooling Towers are best utilized with a LWT near 85°F and water as the fluid being chilled.

 

3. You need to air condition a tent or building not normally cooled by air conditioning.

 

·         Generally, you will need approximately 1 Ton (12,000 BTU) for every 100 square feet of tent or building space.

·         Insulation, the number of people that will be in the building or tent, the number of openings, whether or not return air is available, and other factors may increase or decrease the amount of air conditioning tonnage required to provide adequately cooling.

 

To determine the amount of air conditioning required for a vessel cooling job requires calculation of the volume of the vessel.

 

Basic formulas for determining vessel volume are:

 

·         Volume of Cylinder  =  P r² x H, ( PI x Radius (squared) x Height)

·         Volume of Box  =  w x h x l, (width x height x length)

·         Volume of Sphere  =  d³ x .5236, (diameter (cubed) x .5236

 

Next, calculate the air flow based on the customer required number of air changes per hour. This is usually 2 – 4, but could be as much as 6 in a high ambient, non-insulated, environment.

 

• CFM = Volume x Air Changes / 60 Minutes (CFM = Cubic Feet per Minute)
• To determine tons of air conditioning needed, you will need to calculate the “change in enthalpy” (Dh), or assume 10 to 15 as a rule of thumb.

 

• Tons = CFM x 4.45 x Dh / 12,000 (Cubic Feet per Minute (airflow) times 4.45 times the change in enthalpy divided by 12,000).

 

Other potential applications of rental chillers, air conditioners, cooling towers, and other related HVAC equipment may require additional guidance/calculations for proper calculation.

 

The following are some of the manufacturers and providers of rental chillers, related parts and equipment, and chiller rental services:

 

• Aggreko
• Air Rover
• Air Technology Systems
• Air Pac
• American Chiller Service
• Applied Companies
• Baldor Power Systems
• Blanchard Machinery
• CAT Entertainment Systems
• CRS Chiller Rental Services
• Carrier Rental Systems
• Carter Power Systems
• Central Texas Commercial Air
• Chillco Inc.
• Chiller Resources Inc.
• Consolidated Air Conditioning
• Cummins Power Systems
• DRS Mobilized Systems
• Dunham Bush
• Engineered Environments Inc.
• Entech Sales & Rentals
• Event Cool
• Fabick Power Systems CAT
• Gulf Star Rentals
• HVAC Portable Systems
• Hawthorne Power Systems
• ICS Cool Energy
• Ice Rink Events
• INDECK
• Kohler Power Systems
• Kohler Event Rentals
• Louisiana Machinery Power Systems
• LeBrea Air
• Louisiana Machinery CAT
• Michigan CAT
• Mobile Temp, Inc.
• Munters
• National Rental Chillers
• Nordic Air
• NuTemp
• Ohio Engine Power Systems CAT
• Peterson Power Systems CAT
• Portable Air
• Portable Rental Solutions
• Prime Energy
• Quinn Power Systems
• Rental Tools
• Ring Power Systems CAT
• Rupp Industries
• Rush Air
• Scientific Systems
• South Port Systems
• Specific Systems
• Spot Coolers Inc.
• Stoermer-Anderson, Inc.
• Studio Air Conditioning
• TekGuard
• Temp Air
• Thompson Power CAT
• Topp
• Trane Chiller Source
• Trane Rental Services
• Temcool
• Temp-Air
• United Cool Air
• United Rentals Pump Power HVAC
• Universal Industrial Refrigeration
• Ware Inc.
• Yancy Power Systems CAT
• York Indy Source
• York/Gertz/CAT
• York Rental Solutions

 

 

 

We hope the information on ChillerRental.com was helpful to you in determining the size and application of your rental Chillers, Air Conditioners, Dehumidifiers, Cooling Towers, Heat Exchangers and other HVAC related rental temperature control equipment. Please check back often for updates and additions.