What is a heat pump?
A heat pump (English: heat pump, French: pompe à chaleur) is a device that works on the principle of Thermodynamics for the purpose of transferring heat from one medium to another. A conventional heat pump only allows heat to move in a fixed direction (from “hot” to “cold” or vice versa), for example a heater, refrigerator, etc. Heat pump type allows adjustment and Selecting the direction of heat movement is called a reversible heat pump.
Heat pumps are mainly used for domestic heating. To a larger extent, in units not directly involved in production (e.g. offices), a reversible heat pump is used for heating in winter and cooling in summer.
Heat pumps are also capable of heating your home in addition to cooling it. In the summer, it cools, and in the winter it reverses this process and warms the surroundings. The heat pump is very safe and saves 3/4 of the power consumption due to the device efficiency reaching 400%.
How does a heat pump work?
In nature, water always flows from high to low, heat always transfers from high temperature to low temperature. But we can use a pump to pump water from the bottom to the top and stop the heat pump to move heat from a low heat source (ambient air) to a higher heat source (hot water tank). So in fact the heat pump is a system that increases the heat. This system works on the principle of 2-way air conditioner, but works on the reverse principle.
A heat pump water heater system consists of 4 main components: evaporator, compressor, condenser, and throttle. With the continuous heat circulation in a closed cycle: evaporation (extracts heat from the air in the surrounding environment) – compression – condensation (heat transfer to heat the water in the insulator) – throttling – flying steam, heat has been transferred from the air existing in the surrounding environment to the water contained in the thermos flask and heats the water according to the diagram described below:
When the heat pump is working, the energy available in the surrounding environment as QA is extracted when the air is blown through the evaporator; then the compressor consumes QB energy to increase pressure and increase heat thanks to the specific properties of the refrigerant R410A; Through the heat transfer system, the QC heat generated after passing through the compressor is transferred to the cold water located in the insulation tank during the condensation process. So QC=QA+QB
In the above mentioned cycle, we can see that the energy generated by the heat pump is equivalent to the QC amount of heat that has been transferred to the cold water in the condenser (insulator). According to calculations by experts, the heat extracted from QA air is 3/4 of QC and this is the energy saved by the system. The system consumes only a quarter of the total energy produced by QB. Therefore, when using heat pump technology to heat water for daily life, we can save a lot of electricity bills (3/4 of electricity).
The outstanding advantages of heat pumps:
– Electrical leakage problems will be kept to a minimum.
– The durability of a heat pump is very long, the cost of warranty and repair is also very low and the machine is very rarely damaged.
– Products using natural energy sources such as air and solar energy should reduce costs during use, bringing modern and civilized meanings to environmental protection.
– The heat pump output is 4 times more powerful than conventional machines, which can provide a large amount of water, which is very suitable for bathtubs and jacuzzis. Instant hot water when needed, no need to wait as long as conventional types.
– Currently, the heat pump line is quite popular, so there are many brands for you to choose from such as Neos Japatech, megasun heat pumps…
With the above great advantages, the heat pump deserves to be the device chosen by households.
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