PROCESS
HEAT PUMP
The way in which a heat pumps works is by having a cool refrigerant gas absorb energy from the ground loop or the air and then forcing it through a compressor, pressurising it and making it a hot gas. (If you have ever pumped up a bicycle tyre, you will notice the pump becomes warm as the air is compressed.) The hot gas is then sent to a heat exchanger where it heats the water in the heating circuit. As the heat is taken from the refrigerant it reverts back to its cooler vapour state and goes through the entire process again.
VERTICAL CLOSED LOOP
Where there is not a large garden and space is limited, vertical closed systems can be used. The closed loop system works by pumping an anti-freeze mixture through a loop in the ground which is circulated by the heat pump. Heat is transferred from the ground to the anti-freeze then from the anti-freeze to the heat pump. Unlike the horizontal closed loop system, the weather does not affect the loop as most of the pipes are at a greater distance below the surface.
HORIZONTAL CLOSED LOOP
This system is only suitable for sites where there is a very large area of ground. As with the vertical closed loop system, an anti-freeze mixture is pumped through the loop which is buried between approximately 1metre below ground. Heat from the ground is transferred to the anti-freeze, then from the anti-freeze to the heat pump.
OPEN LOOP
The open loop system pumps water from the water table to the heat pump. The heat pump extracts the energy from the water resulting in the water temperature being reduced by about 5 degrees. The water is then returned back to the water table via a soak-away, a ditch, a stream or via another borehole. This system can be used in a lake or a pond but is more efficient using an underground water source as the water temperature is not affected by the weather.
When utilising an open-loop system, the borehole water can be used for garden irrigation in the summer months. This is a significant bonus as the water is abstracted on site and is not subject to a hose-pipe ban in times of drought.
AIR SOURCE
These system extract energy directly from the air. They are the least expensive and simplest to install. At the height of winter, the air outside may be as much as 15 degrees lower than that of the ground so efficiency can be less than that of open loop or closed loop systems. However, Danfoss air source heat pumps are unique in that they have a non-electrical way of stopping themselves from freezing unlike others on the market which use additional electrical energy hence lower running costs and much better efficiency.
HEAT PUMP
The way in which a heat pumps works is by having a cool refrigerant gas absorb energy from the ground loop or the air and then forcing it through a compressor, pressurising it and making it a hot gas. (If you have ever pumped up a bicycle tyre, you will notice the pump becomes warm as the air is compressed.) The hot gas is then sent to a heat exchanger where it heats the water in the heating circuit. As the heat is taken from the refrigerant it reverts back to its cooler vapour state and goes through the entire process again.
VERTICAL CLOSED LOOP
Where there is not a large garden and space is limited, vertical closed systems can be used. The closed loop system works by pumping an anti-freeze mixture through a loop in the ground which is circulated by the heat pump. Heat is transferred from the ground to the anti-freeze then from the anti-freeze to the heat pump. Unlike the horizontal closed loop system, the weather does not affect the loop as most of the pipes are at a greater distance below the surface.
HORIZONTAL CLOSED LOOP
This system is only suitable for sites where there is a very large area of ground. As with the vertical closed loop system, an anti-freeze mixture is pumped through the loop which is buried between approximately 1metre below ground. Heat from the ground is transferred to the anti-freeze, then from the anti-freeze to the heat pump.
OPEN LOOP
The open loop system pumps water from the water table to the heat pump. The heat pump extracts the energy from the water resulting in the water temperature being reduced by about 5 degrees. The water is then returned back to the water table via a soak-away, a ditch, a stream or via another borehole. This system can be used in a lake or a pond but is more efficient using an underground water source as the water temperature is not affected by the weather.
When utilising an open-loop system, the borehole water can be used for garden irrigation in the summer months. This is a significant bonus as the water is abstracted on site and is not subject to a hose-pipe ban in times of drought.
AIR SOURCE
These system extract energy directly from the air. They are the least expensive and simplest to install. At the height of winter, the air outside may be as much as 15 degrees lower than that of the ground so efficiency can be less than that of open loop or closed loop systems. However, Danfoss air source heat pumps are unique in that they have a non-electrical way of stopping themselves from freezing unlike others on the market which use additional electrical energy hence lower running costs and much better efficiency.
Please Click On Image To Enlarge
Please Click On Image To Enlarge
Please Click On Image To Enlarge
Please Click On Image To Enlarge
Please Click On Image To Enlarge
