Ground Source Heat Pump System
Advantages of the system

* Environmental protection: Using ground source heat energy as the cooling and heating source, energy conversion, reducing the emission of CO2 and other atmospheric pollutants, avoiding cooling tower noise and mould pollution;
* Energy saving: cooling and heating source temperature conditions are better than ambient air, high operating efficiency;
* Cost saving: integrating heating, air conditioning and domestic hot water, enhancing economy;
* Stable: water temperature
* Stable: relatively stable water temperature conditions, fluctuation range is much smaller than air temperature changes, making the operation reliable and stable;
* Flexible: various types of unit options, decentralized water fans can simultaneously air conditioning, heating, to achieve the effect of four controls; * Aesthetic: compared with air-cooled heat pumps without outdoor units, to ensure the aesthetics of the building facade;

Standard or code reference
"Design Standard for Energy Efficiency of Public Buildings"
GB50189-2005,P18,5.4.1 "Where natural water resources and geothermal sources are available, water/ground source heat pumps are appropriate for cooling and heating."
Suitable applications
Various buildings in coastal areas, e.g. Dalian, Qingdao.
System principle

In summer, the heat pump unit discharges the excess heat drawn from the room into the loop, and then releases the heat to the earth through the loop and is absorbed by the earth, making the room less hot and achieving the purpose of cooling.
In winter, the heat pump unit collects heat from the earth through the loop and brings it to the room, using the unit to bring it to a higher humidity level through an electrically driven compressor and heat exchanger to release it into the room.

Principle of buried pipes
1.Vertical burial (double U, single U)
Each riser is spaced 3.5~4m apart and buried horizontally 1.5m below ground level.
Double U type uses twice as much material as single U type and the heat transfer rate is about 1.25 times that of single U pipe.
Suitable for projects with insufficient buried pipe area.
2.Horizontal burial
Buried horizontally 0.6m below the permafrost layer, up to 6 rows of horizontal burial, 0.6m between each row.
Usually used for houses with larger gardens and buildings with large sites. The project example.
Project example
Hangzhou Great World Hardware Town
Building area: 160,300
Function: shops/offices
Total cooling/heating load: 7,784kW/5,678kW
System type: vertical buried ground source heat pump system (1,536 45m deep shafts)
Unit type: water-water screw type ground source heat pump unit MWH series
Shanghai World Trade Sheshan Manor Villa
Building area: 15,000 Floor area: 600,000 Villa complex
Function: Villa
Total cooling/heating load: 105~140kW/70~90kW per block
System type: vertical buried ground source heat pump system source heat pump system
Unit type: water-water type water source heat pump unit MSR series
Representative projects
Hangzhou Great World Hardware Town, Shanghai World Trade Sheshan Manor Villa, Parker Shanghai Industrial Base Office Building, Wujiang Hotel VIP Building, Shenghong Chemical Fiber Office Building, Tianjin Nanhe Town Economic Service Centre Office Building, Chongqing Rongchang Hospital, Suzhou Intermediate People's Court, Tianjin Aviation Mechanical and Electrical Airport New Factory.