Location
Description
Design and realization of a heat pump based Thermowatt system that would use communal wastewater to heat and cool buildings around the St. Stephan Square in Budapest District 4. Humid climate, annual average temperature 11.2 °C. The expected wastewater temperature is 15-20°C and the available wastewater flow is about 250 m3/hour. Besides the already existing 1.7 MW Thermowatt system, a new 0.5 – 0.75 MW Thermowatt system is to be built and would serve three buldings with a total heated/cooled surface of 12 500 m2: the Mayor’s office (2 600 m2), the Government Window (1 900 m2) and the New Market Hall (8 000 m2, under construction). The annual final energy consumption is 274 kWh/m2, of which 197 kWh/m2 from natural gas and 77 kWh/m2 from electricity. The annual space heating and cooling demands are 178 kWh/m2 and 122 kWh/m2, respectively.
Demo Site Expected Impact
Reduction of 48 % primary energy and 30% CO2
Technologies
Buildings and energy
Use of heat from waste water - high efficiency heat exchangers
Building aspects
- Building Energy Services
- cooling (only)
- Building Energy Services
- heating (only)
- Technology used to supply the buildings
- boiler
- Technology used to supply the buildings
- compression refrigeration machine
- Technology used to supply the buildings
- district cooling (DC) network
- Technology used to supply the buildings
- district heating (DH) network
Energy Carriers
- Cold/district cold
- Domestic gas - grid-bound
- Electricity
- Heat/district heat
- Waste heat
Energy Systems Types
- Sustainable Generation
- Co-generation
- Sustainable Generation
- Waste heat
Thematic Field
- Energy System(s) Integration
- New Building(s)
- Refurbished Building(s)