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Large Size Screw Compressor Ground(Water) Source Heat Pumps

Large-scale High Temperature (90℃) Industrial Heat Pumps

Capacity Range: 200 to 2,000 kW, 50 and 60 Hz
Refrigerant: R-245fa, R-134a
Compressor Type: Advanced semi-closed twin screw compressor

Heat pump configuration for up to 90°C forwarding temp. and 2000kW
High temperature high pressure ratio compressor technology
Optimized adaptive control
Patented falling-film evaporator
Connectivity, flexibility and serviceability enabled by smart controller
Modbus RS485, BACnet communication interface
High-temperature superconducting heat system
Wide application range
Compact & reasonable design, with perfect safety protection and low noise
Design systems and configure equipment completely according to customer site conditions and changes

OVERVIEW
MODELS
OPTIONS
RESOURCES
SERVICES
RELATED PRODUCTS

Overview

Efficient and Cost-effective Solution

Heat pumps are an efficient and cost-effective solution for the generation of heat and cold. They lift the temperature by absorbing thermal energy from an existing low-temperature heat source and releasing it to a warmer space. The use of a heat source (e.g., waste heat from industries or renewable heat from nature, like rivers or geothermal sources) enables heat pumps to generate much more heat with a certain amount of electricity, than a simple direct conversion of electric power to heat could do.

During the next years, heat generation will be electrified and decarbonized step by step, due to the gradual replacement of fossil-fired thermal power plants with renewable energies. Excess capacities of renewable energy can be converted into heat, paving the way to CO2-free heat generation. For modern district heating and cooling or industrial heating applications, Withair’s large-scale industrial heat pumps are the best and most efficient solution to convert electricity to heat.
Basic Principle of Heat Pumps

How can you produce heat without heating up the climate?

Heat pumps move thermal energy in the opposite direction of spontaneous heat transfer, by absorbing heat from a cold space and releasing it to a warmer one.
Environmentally Friendly Refrigerants

Withair’s heat pumps use modern, energy-efficient, safe and non-hazardous working fluids. The refrigerants have negligible environmental impact in all aspects:

Non-toxic
Non-corrosive
Ultra-low global warming potential (GWP)
No ozone depletion potential (ODP)

We see refrigerants as a design element of a heat pumps system. We will use the optimum refrigerant for the specific solution.
Potential Heat Sources

Industrial Sources: Chemical & petochemical industrial, refineries, Steel works, Pulp & paper and fiber industry, Power generation waste heat, Sewage water, Data center, etc.

Natural Sources: Air, Geothermal energy, Water in lakes, rivers and sea, etc.
Fields of Application

Withair® Large-scale Industrial Heat Pumps provide significant efficiency, sustainability and reliability improvements over traditional heating systems.

Heat pumps are sustainable, efficient replacements for natural gas and electric boiler-based water and space heating/cooling systems. An excellent technology candidate for building retrofits and new facilities, heat pumps can be utilized within food processing, industrial manufacturing, district heating, and building HVAC applications. District heating and/or cooling; Efficient use of energy in industries, e.g., food & beverage, chemical, petrochemical & pharmaceutical, pulp & paper； Hydronic heating; Space heating; Sanitization

This eco-friendly heat pump solution reduces greenhouse gas emissions and improves energy efficiency while offering load flexibility to building operators.
Key Benefits

● More efficient than direct conversion of electric power to heat.
● Simultaneous production of heat and cold.
● Low levelized life-cycle cost of heat for long term economic solution.
● Easy to integrate in existing processes and applications.
● Proven, reliable technology: Heat pumps are commonly available and attached to households, large-scale is just up-scaled.
● Waste heat can be re-used and sold for other purposes, connecting different applications (enabling new business models).
● Power grid stabilization: Peak shaving for excess power generation to balance supply and demand, surplus power from renewable sources can be converted into heat.

Models

co Specifications	W01R2-280HT	W01R2-540HT	W01R2-1080HT
Heating Capacity (kW)	280	540	1080
Rated Hot Water Output (m3/h)	8	15.5	31
Hot Water Supply (℃)	90	90	90
Compressor	Advanced asymmetrical semi-enclosed twin screw type	Advanced asymmetrical semi-enclosed twin screw type	Advanced asymmetrical semi-enclosed twin screw type
Voltage	380～415	380～415	380～415
Frequency	50 and 60	50 and 60	50 and 60
Refrigerant	R-245fa & R-134a	R-245fa & R-134a	R-245fa & R-134a
COP	3.43	3.43	3.43
Modbus RS485, BACnet communication interface	Option	Option	Option

Factory Installed Options

Unit Options

Brine Version
Condenser Double Flanges Kit
Cu-Ni 90-10 Condenser Tubes
Condenser Four Passes
High-pressure Side Manometers
Low-pressure Side Manometers
Compressor Soundproof System
Double Pressure Relief Valve with Diverter
High Temperature Kit
Refrigerant Leak Detection
Stacked Installation
High Evaporator Leaving Water Temperature
Vibration Isolators
Rubber Antivibration Mounts
Evaporator Inlet Strainer
Double Evaporator Insulation
Partial Heat Recovery or Total Heat Recovery
Integrated Pump Packages
Condensate Overflow Switch
Stainless Steel Heat Exchanger
Stainless Steel Frame
Flanged Water Connection Kit
Container & Transport Kit
Anti-corrosion Cabinet and Structure Version

Controls Options

Modbus, BACnet Communications Interface
Withair® Wireless Components
Door Mounted User Display
Remote User Interface
Fault Detection & Diagnostics
Flow Switch
Remote Input
Remote Output

Electrical Options

Quick Start and Fast Loading
Circuit Breaker
High Short Circuit Current Rating
Ground Fault Protection
115V Convenience Outlet
Power Connections
Multi-Point Power with Disconnect Switch

Resources

Name	Size	Download
Withair® Packaged Rooftop & Split DX Systems-Line-Card.pdf	550KB	Download
Withair® Solutions Offering-Line-Card.pdf	4.00MB	Download
Withair® HVACR SYSTEM SOLUTIONS OFFERING_2025 Version.pdf	3.54MB	Download
Withair® Water-Cooled-Chillers-Line-Card.pdf	483KB	Download
Withair® Air-Cooled-Chillers-Line-Card.pdf	679KB	Download
Withair® Air-Cooled-Heat Pumps-Line-Card.pdf	721KB	Download
Withair® Ground(Water)-Source-Heat Pumps-Line-Card.pdf	502KB	Download
Withair® Industrial Process Cooling & Heating Systems-Line-Card.pdf	506KB	Download
Withair® Air-Side-Products-Line-Card.pdf	1.69MB	Download