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ENG-ENALT 2C, District heat supply with gas heat pumps connected in cascade using thermal water

Description: Das Projekt "ENG-ENALT 2C, District heat supply with gas heat pumps connected in cascade using thermal water" wird/wurde gefördert durch: Kommission der Europäischen Gemeinschaften Brüssel. Es wird/wurde ausgeführt durch: Stadt Aulendorf.Objective: To build an energy saving district heating system with 3 gas heat pumps connected in cascades, using the heat contained in the water of a thermal well (thermal water). The capacity of the system is 13 500 MWh/year, the energy saving is estimated at 745 toe/year. General Information: The special feature of this heating system is to heat the heating water and cool the thermal water not at once but in individual steps. The aim is to reduce the consumption of natural gas of the heat pump drives (gas motors), and of thermal water by increasing significantly the heat output of the heat pumps by maintaining a constant outlet temperature of the heat pump system. This is achieved by connecting the heat pumps in cascade. The heat pump with the highest heating water output temperature is fed with the highest thermal water input temperature whereas the heat pump with lowest heating water output temperature receives also the lowest thermal water input temperature. This ensures that each heat pump operates with the optimum heat output and that the consumption of natural gas is considerably lower than in the case where the heating water and the thermal water are heated or coded by heat pumps in parallel connection. The control capability is the key element of the system. A requirement is for instance that the heat pump operating sequence can be exchanged in order to achieve a similar number of operating hours for each pump. A special feature of the heat pump system is the incorporation of super coolers leading to a further improvement of the energy output/input ratio. Prime Contractor: Stadt Aulendorf; Aulendorf; Germany.

Types:
SupportProgram

Origins: /Bund/UBA/UFORDAT

Tags: Erdgas ? Fernwärme ? Gasmotor ? Wärmeversorgung ? Verfahrenskombination ? Wärme ? Wärmepumpe ? Energie ? Energieeinsparung ? Energietechnik ? Energieverbrauch ? Konsum ? Pumpe ? Wärmekapazität ? Minderungspotenzial ? Heizung ? Heizungsanlage ?

Region: Baden-Württemberg

Bounding boxes: 9° .. 9° x 48.5° .. 48.5°

Marker

License: cc-by-nc-nd/4.0

Language: Englisch/English

Organisations

Time ranges: 1984-12-01 - 1990-04-30

Status

Quality score

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