New housing estate "Paleiskwartier" in 's-Hertogenbosch
The new housing estate "Paleiskwartier" is situated in the centre of the city 's-Hertogenbosch, Netherlands. It consists primarily of residential and office buildings. An electric heat pump and a back-up gas boiler are installed per building. The heat pumps use a common heat and cold storage system ATES (Aquifer Thermal Energy Storage) as the heat source.
| Country | Netherlands |
| City | 's-Hertogenbosch |
| Client name | BV Ontwikkelingsmaatschappij Paleiskwartier |
| Application area | Building sector |
| Building type | Multifamily residence Office building |
| Year of construction | 1990 |
| Heat source/sink | Water/Water |
| Heat pump type | Electric heat pump |
| Year of installation | 2001 |
| Purpose | Heating and cooling and hot water |
| Heat source system | Aquifer/wells |
| Operation mode | Bivalent |
| Contact name | Ms R. Severens |
| Contact E-mail | rose@s-hertogenbosch.nl |
| Contact website | http://www.paleiskwartier.nl |
| Supported by | Novem |
Project description
Building, overall energy concept
The project Paleiskwartier is situated in the centre of the city ‘s-Hertogenbosch on a surface of around 20 ha. The study of this project started in 1990. In 1998, Novem gave a subsidy for this study. This project is constituted of different sustainable measures like the use of a heat and cold storage and photovoltaic panels.
This project is composed of 1.800 houses, 190.000 m2 of office space, 30.000 m2 of catering industry, shops and culture. The dwellings and the office space are connected to the heat and cold storage system ATES (Aquifer Thermal Energy Storage).
Photos 1 and 2: Overall view on the new housing estate
Photos 3 and 4: Multifamily residences
Heat pump system
The energy system is composed of a collective heat and cold storage including several supply and injection wells (ATES), a collective distribution network, decentralised heat pumps and back-up gas boilers. This installation is owned by the energy company Essen.
An electric heat pump and a back-up gas boiler are installed per building. The heat pumps provide space heating for the dwellings and the offices at around 60-70ºC . The average heating demand of the dwellings is 5 kW. The domestic hot water is produced at individual levels with the use of a heat exchanger. Cooling is only delivered to offices. The cooling supply temperature is around 8ºC. The heat pump uses an aquifer as a source. The source is regenerated thanks to the basin located on the site.
Figure 1: In summer, water is pumped from the cold wells and delivers cooling to the offices. The water (which became warmed) is re-injected in the warm well. The COP is around 3,0.
Figure 2: In winter, water is pumped from the warm well and its temperature is increased thanks to heat pumps. The water is re-injected in the cold well. The COP is around 3,5.
Operation experiences
In 2002/2003, the total energy savings for heating and cooling were 51% (compared to a conventional system composed of gas boilers and compression cooling machines). In summer, the energy savings for cooling are 78%. In winter, the energy savings for heating are 35%.
Diagramme 1: Monthly heating demand (warmtevraag) and cooling demand (koudevraag)
Diagramme 2: Use of the heat pump (warmtepomp) and the boilers (ketels)
Costs, economic efficiency, incentives
The costs of the first phase of the total project are around 260.000.000 Euro. For the second phase the costs are estimated to be around 458.000.000 Euro.
Regulations, guidelines, benchmarking
Not available
References
Energieprojecten.com: Project Paleiskwartier
| Design value | Measured data | |
|---|---|---|
| Year1 | 2002 | |
| Heating capacity (kW) | 700 | |
| Cooling capacity (kW) | 675 | |
| COP (Heating, appliance) | 4,0 | |
| PER (Heating /Cooling)2 | 1,3 |
1 Results for 2002/2003 for the first office building connected to the system (round 12.000 m2)
2 Primary Energy Ratio: Useful heating (and cooling) energy delivered / primary energy input (kWhUE / kWhPE)
