PE ground source heat pump pipe fittings

PE ground source heat pump pipes and fittings

Ground source heat pumps have two types: open and closed. One is the open system, which is a heat pump system that directly uses water sources for heat transfer. The system needs to be equipped with devices such as anti sand blocking, anti scaling, and water purification. The second is a closed system: it is a closed system that is buried deep underground in a closed plastic pipe, injected with antifreeze, and exchanges energy with water or soil through a heat exchanger.

Closed systems are not affected by factors such as groundwater level and water quality.

1. Vertical buried pipes - deep soil: Vertical buried pipes can obtain heat from deep soil underground. Vertical buried pipes are usually installed at depths of 50-150 meters underground, with one or more sets of pipes connected to a heat pump unit. The antifreeze inside the enclosed plastic pipes transfers heat energy to the heat pump, which then converts it into the heating and hot water required by the building. Vertical buried pipes are the main method of ground source heat pump systems, which have received strong support from government departments in various countries.

2. Horizontal buried pipe - Earth surface: Place plastic pipes horizontally at a depth of 2 meters underground, fill them with antifreeze liquid, and connect them to a heat pump. Horizontal buried pipes occupy a large area, require a large amount of excavation, and underground heat exchangers are affected by surface climate change.

3. Surface water: Water from rivers, lakes, seas, and deep wells is collectively referred to as surface water. Ground source heat pumps can extract heat or cold from surface water to achieve heating or cooling purposes. The heat pump system using surface water has low cost and high operating efficiency, but is limited by geographical location and local policies.