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Modern heat pumps can use air, soil or water as energy sources. These sources have different temperatures. For the efficiency of a HP system, the source temperature makes a big difference. In this blog you will learn more about the impact that the choice of source makes.

The word "energy" is currently on everyone's lips: energy crisis, energy production, energy consumption and energy saving are the buzzwords of the day. From a physical point of view, however, the term energy is often not used properly: Energy cannot be consumed, produced or saved, as the first law of thermodynamics states: energy is always conserved. However, it consists of usable parts, the exergy, and not directly usable parts, the so-called anergy.

At goodmen energy, we specialise in decarbonisation in the building sector. 

But decarbonisation is also urgently needed in the industrial sector, as it is responsible for more than a fifth of greenhouse gas emissions - and  around 30 percent of final energy consumption in Germany.

Therefore industry plays an absolutely key role in the energy transition. 

In recent years, the element of hydrogen has become an integral part of the discussion about the German energy transition. The precious green hydrogen can be obtained from renewable electricity produced with the help of wind turbines and photovoltaic systems through electrolysis. In this process, water is split into its elementary components hydrogen (H2) and oxygen (O) by means of electric current.

The building sector is responsible for a large part of our resource consumption and greenhouse gas emissions: Around 40 % of our total energy and material consumption is caused by the building sector. In addition, it generates 36 % of greenhouse gases and about 33 % of all waste. The impact on the environment is therefore increasingly taken into account when new buildings are planned.

In the future, architecture must be more closely aligned with climatic requirements. We need to think about energy solutions for the urban future, where houses and neighborhoods are designed to keep their energy needs low and, as far as possible, meet them themselves. How do we achieve this?

Cold district heating networks, also known as anergy networks or heating networks 4.0*, use heat from the ground, water and air to supply neighborhoods and urban districts. The temperatures in the network are significantly below those of conventional district or local heating systems. Cold district heating networks can be fed entirely from renewable energy sources. Therefore, they offer a good opportunity for a sustainable, potentially CO₂- and emission-free heat supply - and thus for climate protection and the achievement of climate protection goals.

*In the English literature, there is already reference to the "5th generation district heating and cooling".

PVT combines photovoltaics with solar thermal energy, i.e. uses sunlight to generate both electricity and heat.

In our projects on the configuration of PVT systems, our customers repeatedly ask the question: What heat yield does a PVT module actually deliver?

The answer to this question, as so often, is: It depends.

Aquathermy uses the thermal energy contained in water to heat or cool. Depending on availability, rivers, lakes or even waste water serve as heat sources.

Aquathermy can therefore be obtained from different sources. We distinguish between

• Thermal energy from surface water (TEO), e.g. from lakes, rivers, etc.
• Thermal energy from waste water (TEA)

Ice storage is becoming increasingly popular in the age of heat pumps and renewable heat sources. They store heat and cold and can thus compensate for fluctuations in supply and demand. This increases the efficiency and cost-effectiveness of heating and cooling systems.