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AI Overview

A screw type water source heat pump utilizes industrial-grade twin-screw compressors and a heat exchange system to transfer thermal energy between a water source (like groundwater or waste heat) and a building. Ideal for commercial facilities, it delivers high-capacity heating and cooling with exceptional energy efficiency.

How They Work

Instead of reciprocating pistons or scroll mechanisms, these pumps use two meshing helical rotors (screws) to compress the refrigerant. As the screws turn, the refrigerant is trapped and progressively compressed, transferring heat into or out of the water loop for building climate control or industrial process heating.

Key Advantages

High Capacity & Efficiency: Ideal for large spaces. They offer industry-leading coefficients of performance (COP) and can reach high supply water temperatures.
Simultaneous Operation: Many modular units can provide simultaneous chilled water (for cooling) and hot water (for heating), recovering waste heat for "free" hot water.
Low Maintenance: Screw compressors have fewer moving parts than traditional reciprocating systems, resulting in less wear and longer operational lifespans.
Eco-Friendly: They use modern low-Global Warming Potential (GWP) refrigerants and significantly reduce carbon footprints by recycling unused energy from sources like sewage plants, rivers, or industrial waste water.

Common Applications

Screw-type water source heat pumps are rarely used in residential settings. They are primarily designed for heavy-duty commercial and industrial use, including:

Hotels and hospitals
Manufacturing and industrial processing plants
Large district cooling/heating networks
Data centers (utilizing waste heat for facility heating)

Industry-Leading Solutions

If you are specifying equipment for a large project, several top manufacturers offer commercial screw-type systems:

Trane: Their Series R helical rotary (screw) chillers (e.g., RTWD models) deliver high-capacity industrial heating and comfort cooling.
WaterFurnace: Offers commercial systems like the TruClimate 700, which features variable-speed screw technology and simultaneous heating/cooling.
LG: Produces water-cooled screw heat pumps capable of producing hot water up to 60°C (140°F) using recovered or ambient water sources.
Carrier: Provides a wide range of water-source screw chillers and reversible heat pumps for versatile building requirements.

Web results

Water-cooled Screw Heat Pump | LG Global Business

https://www.lg.com › ... › Commercial Solutions › Chiller

LG Water-cooled Screw Heat Pump is a highly efficient and economical system that supplies hot water with the temperature up to 60℃ by using 70-80% of unused ...Read more

30XWH - 30XWHP - Aquaforce - Screw chiller and heat pump

Carrier

https://www.carrier.com › ... › Water-to-Water heat pumps

Carrier

https://www.carrier.com › ... › Water-to-Water heat pumps

AquaForce^® - Fixed-speed water-cooled screw liquid chiller & water-sourced screw heat pump. 30XWH / 30XWHP. Refrigerant : R-134a. Compressor : screw fixed-speed ...Read more

Screw Type Water Source Heat Pump Unit Introduction ...

H.Stars (Guangzhou) Refrigerating Equipment Group Ltd.

https://www.hstarschiller.com › screw-type-water-sourc...

H.Stars (Guangzhou) Refrigerating Equipment Group Ltd.

https://www.hstarschiller.com › screw-type-water-sourc...

The water-cooled chiller and water source heat pump unit adopts screw compressors,one system replaces the original boiler and air conditioning system to save a ...Read more

Water Cooled Screw Chiller and Heat Pump, 200kW-2400kW

Ruidong

http://ruidonghvac.com › 1-2-water-ground-source-hea...

Ruidong

http://ruidonghvac.com › 1-2-water-ground-source-hea...

The water source and ground source heat pump is designed and produced by Ruidong for heating, cooling, and heat recovery in large commercial applications.Read more

Series R® Helical Rotary Screw Chillers

Trane

https://www.trane.com › chillers › series-r-rtwd-rthd

Trane

https://www.trane.com › chillers › series-r-rtwd-rthd

Series R® helical rotary screw chillers offer versatility for commercial and industrial process applications requiring precise temperature control.Read more

YORK® Introduces Industry-first Screw Heat Pump Using ...

Johnson Controls

https://www.johnsoncontrols.com › news › 2024/01/17

Johnson Controls

https://www.johnsoncontrols.com › news › 2024/01/17

Jan 17, 2024 — The YORK® YVWH Water-to-Water Variable Speed Dual Screw Heat Pump is the first screw heat pump in North America to utilize ultra-low GWP refrigerant R-1234ze.Read more