Germany – Heating, ventilation and air-conditioning installation work – Heating and refrigeration systems

Opportunity description

The Demonstration Center for Sector Coupling is being designed as a research building combining laboratory and office spaces. The building site is part of the research campus at Schleusengraben. In terms of building law, the Bergedorf 104 /Curslack 19 development plan is binding. The 3-story building will be positioned with its gable facing the street between Am Schleusengraben and the Schleusengraben along the southern property boundary. The parking spaces are located in the northern part of the property. The heating and refrigeration systems comprise heat and cooling generation, heat and cooling distribution, and space-heating and cooling surfaces for the Demonstration Center for Sector Coupling. The heat and cooling supply is provided by three reversible air-to-water heat pumps (chillers) installed on the roof, each with a heating capacity of approx. 30 kW and a cooling capacity of approx. 45 kW, supplemented by buffer storage tanks, an electric heater for covering peak loads, and a hydraulically balanced pipe distribution network made of copper and steel. The rooms are conditioned using radiant ceiling panels, underfloor heating, and recirculating air coolers/heaters (2-pipe and 4-pipe units). ________________________________________________________________________________________ Main works: 3 pcs. reversible air-to-water heat pumps/chillers (heating approx. 30 kW / cooling approx. 45 kW per unit, roof installation)// 3 pcs. buffer storage tanks 1,000 / 2,000 / 4,000 l incl. insulation// 2 pcs. pressure-maintenance/make-up stations incl. diaphragm expansion vessels (up to 250 l) and water treatment// 10 pcs. circulation pumps P1–P10 (dry- and wet-rotor, high-efficiency)// approx. 1,796 m of copper piping DN 12–65 (press-fit system) incl. fittings// approx. 754 m of steel piping DN 15–100 (welded/press-fitted) incl. fittings// approx. 240 pcs. shut-off fittings (ball valves DN 15–100, shut-off valves, electric ball valves)// approx. 70 pcs. control fittings (pressure-independent control valves, Intelligent Valves, 6-way valves)// approx. 2,500 m of heat and cold insulation (aluminum-laminated) incl. insulation supplements and fitting insulation// approx. 81 pcs. fire-protection pipe seals DN 12–65// approx. 64 pcs. core drillings Ø 60–250 mm incl. resealing// 6 pcs. water-fed radiant ceiling panels (6.0 × 1.5 m) // approx. 6,200 m of PE-X underfloor heating (14 × 1.5 mm) incl. 11 heating circuit manifolds // approx. 17 pcs. recirculating air coolers/heaters (ceiling/wall-mounted units, 2-pipe/4-pipe) incl. condensate pumps // 1 lump sum for preparatory work, acceptances/tests, hydraulic balancing, commissioning, documentation and revision. Procedure: open. Review the original TED notice for the complete requirement, lots, amendments and attachments.