More and more states and cities across the U.S. are mandating alternative energy sources over fossil fuels such as natural gas. As a result, the HVAC industry is increasingly interested in alternative energy sources for heating and cooling equipment. One alternative technology that has worked well in residential HVAC applications but has only recently started to be used in commercial buildings is the air-source heat pump (ASHP).
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Improvements to ASHP technology have made it a viable and effective option, especially where natural gas use is restricted. Here are answers to three common questions about this technology.
1. What Is an Air-Source Heat Pump and How Does It Work?
A heat pump is an HVAC unit that moves energy to heat or cool depending on the need. The energy moved by heat pumps has typically come from geothermal energy in ground or water sources. Some heat pumps use waste energy created in a factory. Now, improvements in heat pump technology can generate heating and cooling energy from ambient air.The primary parts of ASHPs are:2. Can Air-Source Heat Pumps Function in Cold Weather Climates?
The two heat pump technologies that offer the most potential for commercial buildings are geothermal and air-source. In deciding which to use, it is important to consider that geothermal heat pumps require access to thermal energy generated by the Earth. This can mean finding a large area of land or water to accommodate the closed-loop pipe system needed for operation. Commercial facilities in rural or suburban locations may have access to the additional land necessary to install geothermal systems. However, geothermal heat pumps seldom work for buildings in densely populated urban areas where land is scarce.
Air-source heat pump technology does not require a geothermal field closed-loop pipe system. It accomplishes heating and cooling by simply transferring energy between ambient air and supply air. The outdoor coils replace the need for the extensive piping required for geothermal heat pumps, making it unnecessary to have a large land footprint around the building.
Selecting the Best Heat Pump Option
DOAS HVACHeat pumps are very reliable.
Plus, according to the International Energy Agency, they are three to five times more efficient than gas boilers.
More than 25 million heat pumps are now used in Europe, and more will be installed to reach carbon neutrality by .
From the smallest units to large industrial installations, heat pumps operate through a refrigerant cycle which allows to capture and transfer energy from air, water and ground to provide heating, cooling and hot water. Due to its cyclical nature, this process can be repeated over and over again.
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This is not a new discovery – the principle underlying the way heat pumps work goes back to the s. Various forms of heat pumps have been operating for decades.
More on the history of heat pumps
More on how heat pumps work
When compared to fossil-based heating solutions, heat pumps can still be quite pricey at the moment of purchase, with average upfront costs two to four times higher than gas boilers.
However, this evens out over the lifetime of the heat pump due to their energy efficiency, which is three to five times higher than that of gas boilers.
This means that you could save over €800 per year on your energy bill, according to this analysis of the International Energy Agency (IEA).
EHPA calls for the price of electricity to be no more than double the price of gas.
We also support a carbon price and policy instruments that shield citizens from electricity price spikes are needed to help consumers choose clean heat over fossil fuels.
Read what else we see as vital to speeding up heat pump roll-out in our policy pages.
Heat pumps operate perfectly at temperatures well below zero. Even when the outside air or water feels ‘cold’ to us, it still contains huge amounts of useful energy.
A recent study found that heat pumps can be successfully installed in countries with minimum temperatures above -10°C, which includes all European countries.
Air-source heat pumps move energy in the air from outside to inside.
On the other hand, ground-source heat pumps transfer heat between your home and the outside ground.
In fact, heat pumps are widely used in the coldest parts of Europe, satisfying 60% of the total heating needs of buildings in Norway and more than 40% in Finland and Sweden.
The three Scandinavian nations also have the highest number of heat pumps per capita in the world.
If you want to learn more, please visit our website Commercial Heat Pump For Sale.