Heat pumps generate heat using the outside air as a source of energy. Afterwards, you can utilize this heat to heat radiators, underfloor heating systems, or warm air convectors and hot water in your house.
Just like a refrigerator, heat pump pulls heat from the outside air to power its compressor. Even in low temperatures, it can draw heat from the air. Energy from the ground, air or water is constantly regenerated, saving you money and lowering harmful CO2 emissions through renewable heat extraction.
At low temperatures, heat from the air is absorbed into a fluid. The higher temperature heat is then transferred to the house’s heating and hot water systems by passing through a compressor.
The components of a heat pump
A heat pump composed of an indoor as well as outdoor unit.
· Outdoor Unit or Heat Pump
The outdoor unit is made up of a condensing unit and compressor. In this compressor is a reversing valve, a motor, and fan. Also, it houses defrost controls as well as the entire essential electrical components of the system.
· Air Handler
The air handler has to be correctly matched in relation to outdoor units. It is comprised of an evaporator, blower motor and electric heater. It is accountable for moving air effectively throughout the homes.
In the event that the heating system fails to adequately heat its specific home and the electrical heater is in need of assistance, an emergency electric heater will turn on to help. The electrical heater is comprised of all the components in an air handler. The heater pack comprises the heating elements that are electric and installed inside the air handler.
The liquid called refrigerant circulates throughout the heat pump system, taking in or removing heat. Its primary function is to aid in the process of exchange of heat that allows a pump to heat your home. Refrigerant is a chemical substance that requires minimal energy to transform liquid into gas and vice versa.
· Inverse Valve
A reverse valve is an electromagnetic four-way valve which reverses the flow of refrigerant by using an electric magnet. When connected to electricity it opens to allow airflow. When it is disconnected, it shuts down and the flow ceases. Reversing valves are accountable for the flow of air into and out of your home.
· Thermal Expansion Valve
An expansion valve for thermal is an essential component of a heat pump and is what is what makes cooling (cooling) feasible. The expansion valve controls the rate of refrigerant flowing as it flows through the heat pump’s structure. This control is achieved via the use of the bulb’s temperature sensor. When the temperature rises it opens the valve that is pushed against the spring. The valve’s regulation by the valve for thermal expansion permits a reduction in temperature and pressure of refrigerant.
What exactly is the heat pump function?
Heat is present everywhere. The heat naturally flows from warmer areas to colder areas. To harness the energy of heat within a home, when outside temperatures are colder, it is necessary to allow warmth to move in the opposite direction, from a colder location towards a warmer location.
When the gas pressure increases, its temperature rises. When pressure decreases the temperature also decreases. The relation between temperature and pressure is the main reason how a heat pump works.
The gas is referred to as refrigerant and a heat-pump uses electricity to compress the refrigerant, thereby increasing the pressure and, consequently, the temperature.
The refrigerant’s heat gets transferred to the home via its heat exchangers. The refrigerant is allowed to expand until it cools further and when it does, additional heat from the outside and start the process over again.
The heat that’s delivered to the exchanger may then be utilized to heat the central heating system of your home (in an air-to ground or ground-to-water heat pumps) or fed to the hot air compressors (in an air-to-air heat pumps).
The types of heat pump
There are two major kinds of heat pumps that are air-source and ground-source. While they both use the same method of heat transfer as mentioned above, the way they bring low-grade heat into the evaporation-compression cycle is slightly different.
· Heating Air Sources
A heat pump that is air-source is the most popular kind of system. When it is outside, the heat pump appears very similar to an air conditioner.
The sun’s warmth is able to warm the air around us and is then dragged in the heating unit via the fan. The heat is then taken from the air and transferred to the coil that heats up, also known as the evaporator. And so the process begins. The fan’s job is to ensure a continuous circulation of hot air to the exchanger.
· Ground Source Heat Pumps
Ground source heat pumps utilizes the solar energy that is that is stored within the Earth to serve as the heat source to cool the evaporator. It absorbs heat through underground pipes that are that are referred to as ground loops or an array. A mix comprising water, and a particular kind of anti-freeze is circulated through the pipes beneath, which absorbs the natural heat that is naturally occurring below the frost line. The antifreeze-water mix then delivers the heat to the evaporator within the heat pump, and the same evaporation-compression process begins.
The most well-known method of setting up ground source heat pumps is to install the pipes that are able to absorb heat horizontally. It is necessary to have a huge of the outside for laying pipes this way if you don’t have the space, you can opt for an incline loop system which requires drilling deep boreholes beneath the earth.
What are the reasons to install a heat pump?
Gas is falling out of favor in many areas
Environmental and climate concerns are causing many governments to push for an end to heating systems that use gas and to move towards heat pumps, which operate using electricity. The goal behind these strategies is to reduce CO2 emissions as well as to decrease dependence on gas, the cost of which can be subject to fluctuations that can be upwards or downwards. In France for instance the new rules stipulate heating pumps are the preferred option to gas-fired boilers for individual new homes beginning in summer 2021.
Heat pumps are highly efficient
Heating systems provide more efficiency in energy use than the most efficient condensing boilers. Although they’re not able to perform better when the outside temperature falls below about 5 degrees, there are some effective installation strategies to get around this issue in colder climates.
Technology is tested and durable
They function exactly the same way refrigerators and air conditioning units. They’re also backed by proven technology that has developed in the past, but with nothing to worry regarding maintenance.
Since they’re extremely flexible in terms of installation:
The wide range of set-ups for heat pumps allows them to be installed across all kinds of buildings and in all types of environment. For instance, it is possible to switch a gas-fired boiler to the heat pump without impacting the current domestic hot water system.
Heat pumps are great in Florida climate and benefit the homeowner. If you need any kind of assistance with Heat Pumps in terms of installation or maintenance, you can contact the experts at Velocity air conditioning . We have a team of professionals that can handle any kind of issues related to Heat Pumps. We’ll be glad to help you.