In addition to providing environmental heating and hot water throughout the year, the ground source heat pump can also work in reverse to provide passive and active refrigeration.
What is passive cooling?
The working principle of passive cooling is circulating water and refrigerant mixture (referred to as ground collectors or ground array) buried in the underground pipeline system (referred to as ground collectors or ground arrays). Salt water cooled through the lower temperature of the ground before circulating to the heat exchanger. So as to further reduce the temperature and provide frozen water. The water is then assigned to the cooling fan coil device or floor heating. If you intend to use a fan duct device, you need to install one in each room that needs to be controlled.
Advantages of passive cooling:
1. It can be installed as part of the heat pump system to save time, money and space.
2. Low operating cost -only energy uses energy to circulate in the system.
3. If you use it with renewable power suppliers, 100% without carbon.
4. Transfer thermal energy from the building and charge the ground throughout the summer. It is ready to extract in winter to improve efficiency.
5. Improve comfort.
Disadvantages of passive cooling:
1. If you use passive cooling with floor heating, be careful, because condensation will accumulate in the form of dew. We recommend using dew point measurements to reduce the temperature of cooling water to prevent water condensation in the atmosphere.
2. Passive cooling is not as effective as an active cooling system, because it does not run under the same low water temperature.
What is active cooling?
Active cooling requires the circuit of evaporator and condenser. This allows to obtain thermal energy from a circuit that is usually provided, and transfers it to drilling or water through the ground collector. This cooling method is more effective than passive cooling, and share higher performance levels with air conditioning.
The advantages of active cooling:
1. It is more effective than passive cooling, because it can maintain the set cooling temperature
2. Higher performance consistent with traditional air conditioners
3. It can be installed as part of the heat pump system, saving time, money and space
4. If used with renewable power suppliers, 100% carbon no carbon
5. Transfer thermal energy from the building and charge the ground throughout the summer. It is ready to extract in winter to improve efficiency.
6. If salt water becomes too hot, the system will become inefficient. This may be because the building becomes too hot and the temperature of the salt water rises slightly with each cycle, so the compressor cannot reduce the temperature to make it cool appropriately.
The disadvantage of active cooling:
1. It requires more energy to run than passive cooling manufacturing, which will increase the operating cost (still much less than the air conditioner)
2. The minimum allowed temperature or drilling or water source heat dissipation capacity may be subject to the cooling circuit.
Which is the best -passive cooling or active cooling?
This depends on your preferences. If you are looking for the most energy -saving system and your house temperature does not reach the overheating level, then we recommend that you use passive cooling. However, if your property does reach a high temperature in summer, we recommend that you use active refrigeration as a more effective system.
Will the ground collector affect the cooling ability?
The type of ground collector used for installation does have an impact. Diamonds and water sources are the most effective because they are usually exposed to groundwater that allows high heating rates.
Why choose heat pump instead of air conditioning?
1. Reduce operating cost -The system uses less energy, so it helps reduce the monthly water and electricity costs
2. It can be installed as part of a system, not a separate heating and cooling system to save space
3. More sustainable and environmentally friendly -if you use energy suppliers that generate renewable power, your system will be 100% carbon without carbon
4. Low maintenance -less maintenance required for heat pumps, and the service life is extended for about 20 years
5. Cost -When you combine the heating and cooling system for a while, you may find that the cost is lower than the installation of separate heating and cooling system
6. Government incentives -From April 1, 2022, you can get a boiler upgrade plan to help pay the cost of installing the heat pump.
If you have any questions about using the heat pump or active heating, please contact us. We provide free offer and professional advice.