Geothermal Heat Pump System

Geothermal Heat Pump System

Commercial and industrial geothermal heat pump systems engineered for ground-source and water-source HVAC installations.
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Description

Commercial and industrial geothermal heat pump systems engineered for ground-source and water-source HVAC installations. Utilizing stable subterranean temperatures, these closed-loop units deliver space heating, cooling, and domestic hot water for commercial buildings and multi-family complexes. Built with heavy structural steel frames and high-performance compressors to minimize lifecycle operating costs and carbon emissions.

 

Key Features

 

High COP/EER: Refrigeration circuits leverage stable ground temperatures (10°C to 20°C) to maintain operational efficiency across seasonal loads.
Dual-Circuit Redundancy: Multi-compressor configurations on independent circuits ensure partial load modulation and continuous operation during maintenance.
Corrosion-Resistant Exchangers: Coaxial tube-in-tube or brazed plate heat exchangers built from 316L stainless steel or titanium to withstand aggressive loop water chemistry.
BMS Integration: PLC controllers support standard Modbus and BACnet communication protocols for building management systems.
Acoustic Enclosure: Galvanized steel panels lined with high-density acoustic fiberglass limit mechanical noise and vibration below 65 dB(A). 

 

Technical Specifications

 

Parameter

Unit

Model: GTHP-100C

Model: GTHP-200C

Model: GTHP-350C

Nominal Heating Capacity

KW (BTU/h)

105 (358,000)

210 (716,000)

365 (1,245,000)

Nominal Cooling Capacity

KW (BTU/h)

98 (334,000)

195 (665,000)

340 (1,160,000)

COP

W/W

4.65

4.58

4.70

EER

W/W

5.42

5.35

5.50

Compressor Type

-

Hermetic Scroll (Dual)

Semi-Hermetic Screw

Dual Semi-Hermetic Screw

Refrigerant Charge

Type / kg

R410A / 18.5 kg

R410A / 36.0 kg

R410A / 62.0 kg

Source Side Water Flow Rate

M3/h (GPM)

22.0 (96.8)

44.0 (193.7)

78.0 (343.4)

Load Side Water Flow Rate

M3/h (GPM)

20.0 (88.1)

40.0 (176.1)

72.0 (317.0)

Max Water Pressure Drop

KPa

45

55

68

Power Supply

V/Ph/Hz

380-415V / 3Ph / 50Hz*

380-415V / 3Ph / 50Hz*

380-415V / 3Ph / 50Hz*

Sound Pressure Level (1m)

DB(A)

62

65

68

Dimensions (L × W × H)

Mm

2100 × 950 × 1750

2800 × 1100 × 1850

3400 × 1300 × 1950

Operating Weight

Kg

1150

2100

3450

 

Technology & Performance

 

Thermodynamic Regulation: Electronic Expansion Valves (EEVs) adjust refrigerant mass flow across 500 steps to maintain stable superheat under fluctuating ground loads.
Thermal Range: Operates in entering water temperatures from -5°C to 45°C for heating and 10°C to 45°C for cooling, supporting vertical boreholes, horizontal loops, and open wells.
Variable Speed Pumping: Optional inverter-driven pumps controlled via 0-10V signals reduce parasitic power consumption at part-load. 

 

Applications

 

Commercial Offices: Centralized climate control via 4-pipe fan coil unit networks driven by water source chillers.
Healthcare & Hospitality: Continuous domestic hot water generation paired with precise zone temperature control.
Educational Campuses: District heating and cooling integration across multi-building developments using shared borehole fields.
Residential Complexes: Basement mechanical room installations replacing traditional boilers and chillers to meet low-carbon building codes. 

 

OEM & ODM Customization

 

Refrigerant Options: Configurations for alternative low-GWP refrigerants including R32 or R1234ze.
Structural Adaptation: Split systems, modular skid-mounted frames, or custom footprints for retrofitting mechanical rooms.
Control Customization: PLC software adjustments and enclosure layouts matching specific BMS standards.
Private Labeling: Laser-etched nameplates, custom sheet metal branding, and multilingual operation manuals. 

 

Quality Control

 

Material Verification: Copper tubes tested via eddy current per ASTM B75; pressure vessels inspected with ultrasonic weld analysis.
Leak & Pressure Testing: Circuits tested using helium mass-spectrometers (threshold 1 x 10^-7 Pa·m³/s) and hydrostatically tested at 1.5x operating pressure.
Run Testing: 4-hour computerized performance test on dynamometer test benches verifying current, pressures, and COP.
Compliance: ISO 9001 and ISO 14001 manufacturing; certified to CE, ETL (UL 1995 / CSA C22.2), and PED standards. 

 

Packaging & Shipping

 

Export Crating: ISPM 15 compliant heat-treated solid wood with vacuum foil moisture barriers and shock-absorbing foam.
Component Security: Threaded plastic caps seal water ports; electrical panels secured against vibration and moisture.
Logistics: Skids engineered for forklift and crane handling, equipped with tipping and shock indicators. 

 

FAQ

 

Q: What are the source water temperature limits?

A: -5°C to 45°C for heating; 10°C to 45°C for cooling. Glycol concentration is required for loop temperatures below freezing.

Q: How do these units integrate with a BMS?

A: Standard RS485 Modbus RTU is built-in. BACnet IP and LonWorks gateways are available as options.

Q: What is the standard warranty?

A: 12 months from commissioning or 18 months from shipment, covering major components including compressors and heat exchangers.

Q: How are multi-unit orders containerized?

A: Units are sized for 40-foot High Cube open-top or dry containers, supplied with pre-shipment loading diagrams.

 

Request a Quote

 

Provide the following parameters for a technical and commercial proposal:

 

  • Heating and Cooling Capacity (kW or BTU/h)
  • Source Side Configuration (Borehole, Open Well, or Surface Water)
  • Entering Water Temperature (EWT) Range (Min/Max)
  • Load Side Water Temperature Requirements
  • Power Supply Specifications (Voltage / Phase / Frequency)
  • Required Certifications and Delivery Destination 

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