How does a heat pump hot water system work?
In Australia, the abundance of options when it comes to purchasing appliances can be overwhelming. The dilemma arises: which one to choose? It's the same when you are looking to purchase a hot water system, as there are numerous options available. Let's explore the heat pump system, how it works and what benefits this system offers. Hopefully, this information will help you with your decision-making and its functioning.
Before you start your search for the hot water system that aligns with your needs and budget, it's essential to consider several factors. These include your climate zone, the designated space for the unit, household water demand, as well as maintenance and installation requirements.
How does a heat pump hot water system work?
A heat pump hot water system operates through a continuous cycle that involves evaporation, compression, condensation, and expansion of refrigerant. This repeated process facilitates heat transfer from the air to the water tank, the advantage of this method lies in its use of electricity to power the compressor and fans. With this heating process, you can expect improved energy efficiency compared to conventional electric or gas systems.
Operational process of a heat pump hot water system
- Evaporator - The evaporator unit is generally situated outdoors or in a well-ventilated space. Refrigerant is contained in the evaporator and transitions from liquid to gas at relatively low temperatures
- Heat absorption - The evaporator coils are in direct contact with the surrounding air, and the fan aids in pulling in the air. As the refrigerant in the evaporator coils is cooler than the air it absorbs heat from the air, causing it to evaporate and transform into low-pressure gas.
- Compressor - The refrigerant has now transformed into a gaseous state, undergoing compression which elevates temperature and pressure.
- Condenser - The hot high-pressure gas is directed through the condenser coil. As the gas traverses the coil it emits heat transferred to the water in the tank.
- Expansion Valve - Once the water is heated, the high-pressure liquid refrigerant moves through the expansion valve, where its pressure and temperature are lowered, preparing to start the cycle again
- Repeating the cycle - The low-pressure liquid refrigerant returns to the evaporator, absorbing more heat from the surrounding air, and the cycle will be repeated
Advantages of a heat pump hot water system
There are two models available for heat pump hot water systems. Whichever model you opt for, you will experience the advantages that come with a heat pump hot water system.
- Integrated - The tank and compressor are combined
- Split - The tank and compressor are separate
The advanced technology for heating your water runs on the same basis as that of a refrigerator or air conditioner in regards to the principle of heat exchange. They all use a refrigeration cycle to transfer heat from one place to another. In all three systems, the refrigerant plays a crucial role in absorbing and transferring heat. The key difference lies in the specific application and the direction of heat transfer. A heat pump hot water system is designed to provide hot water, while a refrigerator and air conditioning unit are focused on cooling.
- Energy Efficiency - Heat pump systems are known for their high energy efficiency
- Lower Operating Costs - Due to their higher efficiency, you can look forward to lower energy bills
- Long lifespan - Due to their durability, these systems keep on going
- Quiet operation - No need to worry about noise pollution
- Environmental Friendliness - Uses renewable heat sources.
- Reliable hot water supply -Continuous supply of hot water guaranteed
- Versatile - Works well in most climate zones and easy to install
Your local hot water system experts
Pure Plumbing Professionals are the experts when it comes to hot water systems. For all your hot water queries or needs phone 02 9191 7374 and we will be happy to assist.
Source - https://www.energy.gov/energysaver/heat-pump-water-heaters
