Cooling & Heating Systems

Energy Efficient Water Chillers

 

NQV Portable Chiller - 10, 15, 20 Ton with Variable Speed Scroll Compressor

Same great features as the NQ Series with the addition of an optional variable speed compressor for significant energy savings!

Why use a NQV Chiller?

A conventional portable chiller uses a compressor running at a continuous speed, also known as a fixed speed compressor. Regardless of the requirements placed on it by the process load, the compressor speed remains at 100%. Fixed speed chillers employ a “hot gas bypass” to maintain the demand on the compressor to avoid wide fluctuations in the coolant temperature delivered to the process for consistent output.

NQV Variable Speed Chillers with advanced PLCs are at the technological forefront of the process cooling industry. The controller constantly monitors the heat load and adjusts the compressor speed for peak efficiency and temperature control and eliminates the need for hot gas bypass. By automatically adjusting the compressor speed, the chiller works only as hard as necessary to provide optimum performance with significantly reduced power use. Studies have shown that a 20% reduction in motor speed can lead to a 51% energy savings.

What kind of energy savings can I expect?

Fixed-Speed vs. Variable-Speed: 10 and 15 Ton Chiller - Compared to a typical chiller with a fixed-speed compressor, a chiller with a variable speed compressor provides major power savings at partial loads. For example, at a 30% load, the variable-speed compressor consumes just 36% of full-load power, while the fixed-speed chiller consumes 88% of full-load power – a savings in excess of 50%!

Fixed-Speed vs. Variable-speed: 20 Ton Chiller - A NQV20 portable chiller combines a 10 ton variable-speed compressor with a 10 ton fixed-speed compressor to generate impressive savings, especially in the 3 to 8 ton range and the 13 to 16 ton range. Note that energy savings are not as significant in the middle load range, where either compressor -- fixed or variable -- would be running near its full capacity of 10 tons. The curve for the 20 ton fixed-speed chiller is a bit different too. It has two 10 ton compressors so that it can run on just one (half power, more or less) until the second compressor needs to kick in. Still, it is clear that there are significant energy savings to be realized.


TC Centrifugal Chiller Series Compressor - Variable Speed w/Low Compression Ratio's of Refrigerant

Single circuit up to 135 tons - Duel circuit up to 270 tons

Thermal Care is at the leading edge of process cooling technology. TC Series Centrifugal Central Chillers use revolutionary, frictionless, magnetic bearing Turbocor compressors to deliver optimum chiller performance and part load efficiencies. This translates into the quietest, most reliable, and most energy efficient chillers ever built. Models are available with either single or completely independent dual refrigeration circuits. 

TC Series Chillers come standard with Dynamic Lift technology to continuously calculate the lowest allowable refrigerant pressure for any combination of operating conditions for maximize chiller energy savings and more stable and smooth control of refrigerant pressure, especially under varying load and condenser inlet temperatures.

TC Series Central Chiller Features

  • Water cooled and remote condenser models available
  • Powerful PLC System maintains stable and reliable operation of the chiller
  • Stainless steel brazed plate evaporators for efficiency and corrosion resistance
  • Energy-efficient, variable speed drive, Turbocor centrifugal compressor reduces operating costs vs conventional fixed-speed compressor technologies
  • C-UL 508A listed and labeled industrial control panel
  • Rotary circuit breakers for each compressor
  • Single point connection for electrical hookup at control cabinet

Only one major moving part - the compressor impeller which is used to compress gas and provides the highest full load efficiency. In addition, the Turbocor centrifugal compressor design operates at compression ratios as low as 1.2 (discharge pressure/suction pressure) compared to 1.8 or higher for other types of compressors. Lower compression ratios means less energy use.

Integrated Variable Speed Drive Motor Control

  • Enhances temperature control capability for partial load performance.
  • Soft-start control reduces peak energy demand and extends motor life by lowering initial current inrush at start-up
  • Lowest noise level; whisper quiet sound levels with 71 dBA (per compressor) and virtually no structure-born vibration.

View Thermal Care Central Chiller Brochure


Water Manifolds

Increase cooling efficiency and speed cycles by providing ample water supply to cooling processes

Aluminum Manifolds  3/4" to 2" SupplySmartflow Aluminum Manifolds

Features and Benefits

  • 300°F/149°C Operating Temperature Rating for application flexibility
  • 150psi Maximum Pressure Rating
  • One-piece aluminum extrusion
  • No seams
  • Red and Blue Anodized for corrosion resistance and function identification (supply and return)
  • Various port sizes and thread types available (NPT, BSP, SAE)
  • Brass end plug included (NPT only)
  • Pre-drilled mounting holes
  • Unique dovetail lock feature for paired mounting on 3/4", 1", and 1-1/2" sizes
  • Standard items in stock - custom items available
  • Optional ball valves, flowmeters and regulators can be installed to suit specific applications

Stainless Steel ManifoldsSmartflow Stainless Steel Manifolds

Smartflow Stainless Steel Manifolds are made to last.  Superior hand-welded construction and high quality stainless steel components create a reliable product on which industry depends in demanding applications. Note: These manifolds are available in standard and custom sizes.

Features and Benefits

  • 250°F/121°F Operating Temperature Rating for application flexibility
  • Rated for 250 psi  a\maximum liquid pressure to suit most installations
  • Chemically compatible stainless steel construction
  • Corrosion resistant
  • 100% leak tested
  • Brass end plug included (NPT only)
  • Integral mounting brackets for stability
  • Many sizes stocked for quick delivery
  • Custom designs available
  • Optional ball valves, flowmeters and regulators can be installed to suit specific applications

Duoflow Aluminum ManifoldsBurger Duoflow Aluminum Manifolds

Duoflow Aluminum Manifolds are divided internally and color-coded red & blue to denote Supply and Return cooling in a compact arrangement. These manifolds have compressed port spacing and are designed for installation on injection molds in storage.  By storing molds with water circuits pre-plumbed to the manifold, only one hookup for supply or return is needed.  This is one of the Quick Mold Change techniques that save injection molders time and money.

Features and Benefits

  • 3/4", 1", 1-1/2" and 2" inlet sizes (NPT or BSP)
  • 1/4", 3/8" and 1/2" port sizes (NPT or SBP)
  • Red & Blue Anodized to denote Supply and Return circuits
  • Common sizes in stock
  • Custom manifolds made to order
  • Quick disconnect and hose barb fittings optional for convenience