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Large scale heat pumps - An option to optimise your budget cost

The German government estimates that the prospects for economic growth in Germany will be considerably reduced due to the shortage and increase in price of the basic raw materials, namely coal, oil and gas [01].

It is therefore essential to start counteracting as soon as possible, as this development will inevitably continue [02] [03] [04] [05] [06].

Intensive efforts have been and are being made to replace the classical energy sources by regenerative energy sources [07]. One result of this has been the development of CHP (combined heat and power) which reduces the use of the primary energy resources.

The use of large scale heat pumps to produce heat/ cooling also contributes considerably to reducing the consumption of primary energy sources [08] [09] [10]. The favourable running costs will compensate for the possibly higher initial investment cost in a very short time; for example the use of 1 Euro for primary energy (electricity or gas) to run the heat pump, will free energy for use of the equivalent of  3 - 6 Euro, depending on the existing conditions. This technology is therefore less sensitive to the price increases of primary energy than any existing conventional technology (Picture 1).

Large scale heat pumps are however not standard products and have to be designed individually according to the existing conditions and objectives. In order to guarantee economic success the involvement of heat pump specialists [11] at the early planning stage is absolutely essential.

The energy can be taken from extracted water (drinking water, industrial water or water from pump station works), from sewage water or from a stream of air or gas.

Spill heat is available from existing or closed down mines, a stretch of running or standing water (barrages or rivers) as well as from industrial production processes (such as paper mills, sodium compound production, glassworks, refinery etc.) and even from the return flow in cooling systems. The use of heat pumps enables the cooling process  to become technically and economically more efficient.

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