Germany - Architectural and engineering services and planning-related services

Description

Execution supervision and technical controlling for the project Service Center II (VZII)
The service center building stands on a two-story basement structure (2nd basement with approx. 1,750 m2 GFA + 1st basement with approx. 2,800 m2 GFA). The remaining areas (2/3) to the east in the direction of Domagkstrasse accommodate the technical facilities of VZ II, whose equipment and installations require a clear room height of approx. 8.0 m in some cases. Exhaust gas lines, cooling water lines and other media lines are routed in vertical shafts through the entire high-rise building up to the roof. The roof of the service center serves as an installation area for the recooling units for refrigeration and other technical equipment. The central access core carries the firefighters' elevator and the stairwell up to the roof. Attached to this is a shaft structure (chimney) approx. 6.0 m above the roof surface, which ensures the operation and exhaust gas routing of the VZ II. In addition, there are 2 reinforced concrete cooling water tanks with a capacity of approx. 30 m3 on the 10th floor and on the technical floor above. 30 m3 of cooling water.On the cooling and heat supply side, VZII will essentially house the following technical systems and equipment in the future:Heat supply:District heatingThe projected heat output for the UKM campus area to be supplied is:QFW approx. 10.0 MWTo supply the local heating network on the UKM campus, a modular district heat exchanger station is planned, consisting of a total of 3 district heat exchangers arranged in parallel, each with a transfer capacity of 5.0 MW.The required district heat will be supplied from the district heating network of the University of Münster.Combined heat and power plant (CHP)To ensure an energy-efficient heat supply and decentralized power supply, a gas-fired CHP plant with a generator capacity of 2.0 MW is an integral part of the overall concept. The CHP unit was designed in such a way that operation with conventional natural gas, biomethane and admixture of hydrogen into the natural gas network is possible. The CHP unit is operated exclusively on a heat-led basis with regard to the planned plant design, so that the CHP/CHP high-efficiency criteria are always met during operation. The CHP is planned with a 10 kV generator in order to feed the generated electrical energy into the UKM-internal 10 kV grid without transmission loss.High-temperature heat pumps (HT-WP)The overall system is supplemented by two high-temperature heat pump systems. The heat pumps are primarily used to cover the relatively low cooling power requirements of the connected properties in the winter months, irrespective of the weather conditions, and at the same time to feed the heating network with the waste heat generated in the process.The heating / cooling capacity in winter operation is: approx. 2 x 1.0 MW / 2 x 0.65 MWCooling supply:Absorption chillerIn order to optimize the operating hours of the planned CHP unit, an absorption chiller (LiBr) with a cooling capacity of QK = 1.5 MW is planned, which is supplied with the CHP waste heat as heating medium in the summer months.High-efficiency chillerAnother component of the cooling supply is a high-efficiency chiller with oil-free compressing turbo compressors. The cooling capacity of this unit is QK = 3.4 MW.10 kV turbo chillers (2nd expansion stage)Two turbo chillers with a cooling capacity of QK = 4.3 MW each are planned for the future final expansion (2nd expansion stage). These chillers will be supplied with the necessary electrical energy directly from the medium-voltage grid.Cooling water systemThe cooling generators will be supplied with the required cooling water via a central cooling water network with open recooling units located on the roof surface and a cooling water storage tank on the 10th floor/technical floor. The cooling water network includes all technically required components and aggregates (such as pumps, filters, fittings, biocide dosing equipment, UV disinfection, etc.) The cooling water network is constructed almost entirely of plastic piping for reasons of corrosion protection. The maximum nominal pipe size for this system is DN500.The necessary make-up water is provided by a central water treatment plant, essentially consisting of the necessary dosing equipment, the reverse osmosis plant, the storage tanks, the blending equipment and the pressure boosting plant, etc.Pipeline networks for heat/cooling supplyThe pipeline networks for the cooling and heat supply are provided in steel pipe with welded and flanged connections and contain all the necessary aggregates and components (such as pumps, fittings, pressure maintenance and degassing, safety equipment, etc.). The maximum nominal pipe size for these systems is DN500.Ventilation systemsThe planning takes into account all the ventilation systems required for the operation of Supply Center II for the removal of process-related heat loads, for the supply of combustion air and other matters. The total volume of all required systems is approx. 93,000 m3/h.Building automationA DDC system consisting of automation stations (AS) and modular modules for analog and digital input/output (I/O) is used to control, regulate and monitor the building's technical systems. All automation stations are integrated into the LAN network of the UKM. This also applies to network-capable units such as the chillers, which have BaCnet/IP or Modbus TCP/IP interfaces. The connection to the higher-level building control system (GLT UKM) is made via a BACnet interface.

Opportunity closing date

17 November 2023

Value of contract

to be confirmed