Innovative solutions and best practices

Veere, Netherlands – Winner of the Heat Pump City of the Year 2018

  • The city administration decided to reduce the energy consumption of the town hall HVAC system by minimum of 30%
  • The town hall preferred a solution which would allow the re-use of all existing heating/cooling pipework in the building thus reducing the time to modify and renew the system to a minimum and avoiding disturbances
  • The emission of the town hall moved from 43.5 to 0 tons
  • The project has used only natural refrigerants
  • F Gas R407C and Gas boiler were completely phased-out!

Cologne, Germany – Winner of #DecarbIndustry 2018

  • The train maintenance depot is heated or cooled by a system consisting of several heat pump modules (including hydraulics)
  • The main energy source of the used system is groundwater. Covering the entire energy demand with green energy is of highest priority. Especially for the cooling operation, only the cooling energy of the groundwater is used
  • This means that only a small amount of additional energy (e.g. electricity for the operation of the required feed pumps) is necessary to cool the building, which reduces the power consumption of the system to a minimum
  • The used system in combination with a solarthermie (180 m2) and photovoltaic system (2.100 m2) provides an annual saving potential of 1245t CO2

Arnhem, Netherlands – Winner of #NextGenerationHP 2018

  • 96 Zero Energy Homes located in the city of Arnhem
  • Because most of these homes are owned by housing corporations, the costs of rebuilding hundreds of thousands of homes is not feasible. The core of the buildings are still very good, so a renovation is much faster and easier compared with a complete rebuild
  • The roof has been covered on both sides with solar panels, generating enough power for household usage and the energy for all installations. At the end of the year, these houses have generated as much energy as they have consumed. Solar panels converter and warm water supply plus heating using an Alpha-Innotec air/water heat pump
  • The heat pump is responsible for both hot water production and heating of the house. Without the heat pump, the house is uninhabitable

  • Since its development in 2016, the energy module has been used in over 400 houses, with an additional 800 houses planned this year including high rise buildings

Vejle, Denmark – Winner of #DecarBuilding 2018

  • The aim of the project was to deliver heating and cooling to a Resilience House – 2.600 m2 innovation and education centre.
  • The heat pumps deliver heating and cooling for the building optimized regarding the demand from the building, the production from the building’s solar panels and the electricity price
  • The project uses 2 boreholes as energy-wells, storing heating and cooling
  • The energy storage system consists of two cone shaped energy storage wells, a geothermal heat pump, and two air-to-water heat pumps. The total system is controlled so that the geothermal heat pump covers a relatively large part of the building’s need for heat and hot water, thus accumulating a large amount of cooling energy in the energy storage wells during the winter

    Links: 1, 2  , 3

Beijing, China – special recognition for Best International Action  2018

  • Air pollution, “HAZE”, is a big threat to people health in China. For this reason, the government set targets and timeline to control and reduce air pollution. Especially in the area, around Beijing.
  • In 2016 and 2017, the coal-fired boiler replaces program, “coal to clean heating program”, supported around 500,000 air source heat pump installations in Beijing. This resulted in a reduction of more than 2 million tons of coal usage.
  • Air source heat pumps are subsidized by the government to replace the household coal-fired boilers.
  • The PM2.5 Beijing decreased from 110ug/m3 to 58ug/m3
  • SO2, NOX, and other pollutions are also reduced a lot
  • In 2017 Beijing citizens managed to have a look at the blue skies during winter.

Vienna, Austria – Winner of the Heat Pump City of the Year Award  2017

  • Systematic approach to an energy strategy: Aim to reduce energy demand & avoid local pollution => fuel switch
  • Recognition of the potential of central and decentral heat pumps
  • Annual energy report plus Information & promotion strategy:
    – Funding scheme for renewable heat, storage and low temp heat
  • – Online map of geothermal potential
  • – Heat pump guidelines Fast growing city

Trondheim, Norway  – Special recognition for best visualisation of the heat pump technology HPCY 2017

  • Project name Moholt 50|50 reflects that the old buildings in the area are 50 years old, and that the new ones are built for the next 50 years
  • Buildings –> Students’ houses and facilities
  • Use of CLT reduces the CO2 emissions more than 50% compared to a traditional steel and concrete building
  • Energy central have three heat pumps (3x 84kW) and one electrical boiler (300kW) as backup

Berlin, Germany – Best solution for the building renovation sector  HPCY 2017

  • Long term storage eTank: Usage and storage of surplus and low temp-erature yields from the solar panels as well as geothermal energy. Further potential: control energy
  • COP: 4,3 (12°/45°C),  COP 6 (12°/35°C)
  • -90 % primary energy consumption

Hylke, Denmark  – Winner of the Heat Pump City of the Year Award  2016

  • Successfully phased out its oil consumption with approximately 30% in 12 months.
The result was achieved after a series of oil-fired boilers were replaced with a heat pump solution from Best Green
  • The new flexible electricity consumption achieved with the heat pumps ensure the utilization of wind power in areas with no access to district heating. This will enable private and public consumers to save money on 
heating while reducing CO2
  • At the school the heat pump system has, after the first year in operation, covered the entire heating requirement with a measured COP 3.2. At eight private households the COP reached was 3.0

Gilze, Netherland  – Finalist HPCY 2016

  • The project reduces waste energy on a larger scale
  • The grid has an enormous environmental relevance because when its fully operational it reduces the output of CO2 by 1650 ton per year which is equal to 50.000 tree’s a year
  • The grid operates with plain water, without additions and is 100% environment-friendly. The temperature in the entry source loop varies between 8° and 16°, thus resulting in a COP of 4-6 in heating mode and a COP of 15-20 in cooling mode.

Seine Saint-Denis, France – Finalist  HPCY 2016

  • The SMIREC is a new district heating plant based on a massive geothermal drilling, which involves a 1.700m deep well and provides 40MWh of geothermal heat per year to the nearby cities
  • The electrification of the system with certified green energy would cut completely on-site CO2 emissions due to fossil fuel consumption

Olot, Spain – Winner of the Heat Pump City of the Year 2015

  • The project is a pioneering multi-energy district heating and cooling in Spain
  • The COP: Heating, low temperature (radiant floor, 10/35) : 4,84
Cooling, medium temperature (radiant floor, 16/35): 5,12
Heating & cooling simultaneously: 9,00
  • 28 KWp solar system used to supply electricity to the heat pumps.

Hollola, Finland – Winner of the Heat Pump City of the Year 2015

  • The project provides heat for about 1500 households. But it is foreseen to achieve the target of 4000 
  • 75% of the district heat is originated from an absolute clean source
  • The CO2 emission reduction achieved (at the time of the application) was 4 000 tons per year

Drammen, Norway – People’s award 2015 

  • In 2009 the growing population of Drammen led to a reconstruction of the heating system in
order to meet the growing heat demand
  • With an installed capacity of 13.2 MW from heat pump, covering more than 75% of the annual heat demand of Drammen
  • Provide hot water at 90°COP of 3.05 is achieved.
  • The overall annual carbon savings of 15,000 t CO2 due to this project

Viborg, Denmark  – Winner of the Heat Pump City of the Year 2014

  • The heat pumps are dimensioned to cool a minimum of 10,500 MWh process heat a year.  For that purpose  2, 900 MWh electricity is used and 13,400 MWh district heating is produced in a year. The Cop achieved for cooling is 3.6 while for heating is 4.6.
  • The heat pumps cool down the process cooling water from the machinery at Grundfos from 18⁰ C to 6⁰ C and 12⁰ C. The cooled energy is delivered to the district heating plant at respectively 46⁰ C and 67⁰ C.
  • Reduction of CO2 emission: 3,000 tons per year

Újszilvás, Hungary – Finalist HPCY 2014

  • This project developed in the city of Újszilvás uses drinking water as the source of the heating. After drilling the ground at 445m, they recover the water at a temperature of 32,7 ° C and can supply 375 l/min water for the town hall, school and the “house of culture”.
  • The water that it is not used, go back to the ground.
  • the water is kept to a temperature under the 20° C.
  • this system reduced by half the cost of the former expenses.

Druskininkai, Lithuania – Finalist HPCY 2014

  • This project was implemented in the city of Druskininkai, in the “Grand SPA Lietuva”- a wellness complex of 20.000 m2. The heat pumps system covers the heating and cooling demand of the Spa and the hotels with air/water and brine/water heat pumps, which reuse wastewater, waste air from the ventilation system and the direct geothermal source.
  • The heat pumps are the main heat and cool source. For the heating demand, HPs cover more than 80% of (the heating demand, domestic hot water, preparation of hot mineral water, swimming pool water heating), while for the cooling the HPs cover the 100% of its demand.

HendrikIdoAmbacht, Netherlands – Finalist  HPCY 2014

  • This project regards a complex of buildings in the city of Hendrik-Ido-Ambacht, composed of: 49 social houses, 13 apartments, health facilities, 1 pharmacy and 1 nursery. All the buildings of the complex have a ground source heat pump. The heating water collectively generated is individually reheated in every house with a Booster heat pump that centrally generated temperature increases to a safe, reliable temperature.
  • In the basement of the building, there is a cascade of two central brine/water heat pumps that take energy from the geothermal source
    and convert it into a supply water temperature up to 25 °C (summer) and 40 °C (winter). This heated water supply is distributed in the apartments. The water is stored in 120 or 200-litre hot water tanks allowing immediately comfortable hot water in the apartments.
  • Regarding the cooling, there is a temperature distribution of 17 °C.
  • Reduction of CO2 emissions by 62%
  • System COP heating W10/W40: 5,51 System COP hot tap water W10/W65: 2,45

Amstetten, Austria – Winner of the Heat Pump City of the Year 2013

  • This is a pilot project that aims to recover and use the waste water as a heat source.
  • In 2012 a waste water treatment plant was built in Amstetten. With the new heat pumps system the energy took from the waste water supplied the district heating in the neighbourhood, reducing the CO2 emission by the 55 tons per year.
  • The heat exchanger provides the water in the district heating at the temperature of 27 degrees.
  • The heat pump system has a COP of 5.6 ,  only 18% of the energy is from electricity (to activate the heat pump) while the 82% of the energy  is produced by waste water heat.

Etten-Leur, Netherlands – Winner of the Heat Pump City of the Year 2012

  • Since 2002, the municipality of Etten-Leur has implemented a public policy oriented to sustainable solutions by using water source heat pumps.
  • During the years the municipality installed water source heat pumps in the town hall, in the school and in 1000 social houses.
  • With the project “Schoenmakershoek-Oost”, in 2011,  they started to build 500 houses with a water source heat pump each.