Published July 2, 2020 -3min-
Practical information on air source heat pumps
A heat pump is an old and very reliable technology. It consists of a compressor an expander and heat exchangers.
In short, a heat pump is an electrical device which provides you with:
1. Warmth, in winter by extracting heat from the outside air and by transferring the heat into the home.
2. Coolness, in summer by reversing the process, extracting heat from the air inside and transferring it to the outside.
It is reported that a heat pump can reduce your electricity use for heating by approximately 50% compared to electric resistance heating such as furnaces and baseboard heaters. Moreover, an air-to-air heat pump also dehumidifies, which results in using less energy and more cooling comfort in summer months.
The Air-to-Air and Air-to-Water devices are placed outside the house.
Water-to-Water (water sourced heat pumps) devices will be placed in the house, possibly as a replacement of existing gas boiler.
It extracts heat from the outside air to heat your home and hot water, even at low temperatures. Did you know that when the temperature is -18°C, it still contains 85% of the heat it contained at 21°C? In fact, a gas is compressed by a compressor and it expands in a heat exchanger. The expanding gas will extract energy (heat) from the outside air and blow through the heat exchanger. In this process, the energy in the gas will be released and with the help of a second heat exchanger, this energy will be extracted and transferred to a boiler for domestic hot water or heating demands. In brief, a heat pump moves heat or cool from the outside into your house.
Other types of heat pumps:
Geothermal / ground source / water source heat pumps
Hybrid Heat Pumps
Ductless Mini-Split Heat Pumps
Absorption Heat Pumps
Examples of technologies based on the heat pump system: refrigerators, air conditioners, etc.
7 advantages of heat pumps
1. Can be used both for heating and cooling
2. Can work even at low temperatures
3. Lowered carbon emissions
4. Potential income / incentive from your government
5. Can be ‘Green’
Even if a heat pump is using quite some electricity, they are quite green as they efficiently extract energy from the environment, the electricity input is lower than the heat energy output and they can be fed by green electricity.
6. Easy installation process
They are quite expensive but as they have the ability to emit up to 5 times more energy than they consume, ultimately, they will save costs. Moreover, the technology used is very well know and established hence very reliable and maintenance friendly.
How does bcheck benefit to your heat pump?
With bcheck, you can get visibility into the functioning of your heat pump. For example, you can check:
• When the heat pump is running;
• The exact running times;
• Temperature of the compressor;
• The evolution of the delta temperature between supply and return, both on the input and the output side monitoring the Coefficient of Performance (COP) (see below);
• Some systems will switch to pure electrical heating when outside temperatures are dropping below 10°C, for instance. In this case, the efficiency of the system will drop drastically. This means that the COP drops below 1:
COP= Energy OUT/ Energy IN.
o Energy out, or the heat pump’s expected output.
o Energy In, or how much energy it takes to run the heat pump.
bcheck helps you to get the most of your investments in heating installations by offering visibility and allowing optimisation!
If you have any (or more) questions, please feel free to ask: firstname.lastname@example.org