Trade DIN 18380 Heating systems

0.1.2 Building

A new town hall is built with a

Underground car park.

The underground car park is opened due to stratified water in

WU concrete construction, the ground floor by means of semi-prefabricated parts,

the upper floor and attic in timber frame construction

created.

1. Heating system according to DIN 18380

The scope of services includes the ready-to-use production

of the entire heating system within the building.

Heat generation:

The heat is generated via the connection to the

District heating system in Markt Altusried. The planning of the

District heating supply has not yet been completed

and the supply temperatures of the district heating were still

not specified. The house introduction and the primary side

Heat transfer station incl. separating heat exchanger will be

Created on site. The primary side connection takes place in the

Intermediate cellar between the old and new town hall.

The work described in this specification

start from the secondary connection of the heat exchanger.

Refrigeration

In the technical room in the basement, a chiller with

three direct condensation storage tanks are installed. Above

the storage tank, the waste heat is absorbed and used as heat recovery

supplied to the district heating network. Hydraulically, the

Chiller via a buffer storage tank in parallel operation

connected. The cold generated is controlled by changeover valves in the

Flow and return flow in case of cooling requirement in the heating circuits 01

and heating circuit 02.

Heat and cold distribution

The heat and cold distribution takes place in the 2 strand principle

in the building via two weather-controlled heating circuits. The

Temperature control is carried out via a 3 Wegemisch valve.

The heating or cooling energy is supplied via

Changeover valves in the supply and return of the heating circuit.

Heating circuit 01: Underfloor heating/cooling ground floor, upper floor

The heating circuit 01 supplies the underfloor heating surfaces of the

entire office space on the ground floor and upper floor as

2 Head System. A changeover valve can be used either

Heat or cold water distributed over the heating circuit

become. Due to the high cooling load, the office receives a

South/west area additional cooling convectors.

Areas covered:

-Office space FBH ground floor (heating/cooling)

-Office space FBH Obergschoss (heating/cooling)

-Recirculation convectors office south/west upper floor (cool only)

Heating: VL/RL Temperature: 35 °C/28°C

Cooling: VL/RL Temperature: 17 °C/20°C

Heating circuit 02: Heating and cooling supply DG

The heating circuit 02 supplies the underfloor heating and

Ventilation systems for the attic as a 2-wire system.

A changeover valve can be used to supply either heating or

Cold water can be distributed over the heating circuit. Because of the

high cooling load, the boardroom receives additional

Kühlungskonvektoren

Areas covered:

-Meeting room FBH (heating/cooling)

-Ventilation system boardroom (heating/cooling)

-Ventilation system WC facilities (heating only)

-Convection convectors boardroom (cooling only)

Heating: VL/RL Temperature: 35 °C/28°C

Cooling: VL/RL Temperature: 17 °C/20°C

Wärmeübergabe:

All rooms get underfloor heating, which is located in the office and

Common rooms can both heat and cool. In

the sanitary facilities are only heated. Spatial control shall be carried out:

by the on-site room temperature control. In the office (South/

West) floor and in the meeting room an additional

Cooling via circulating air convectors.

The indoor room temperatures are determined according to

DIN EN 12831

As pipe material for the heating pipes are stainless steel pipes

(material 1.4520). The pipelines

are fire protection in the floor slabs

to isolate.

The main distribution lines run in the basement under

the floor ceiling. The climbing routes are installed in installation shafts

mislaid. The connecting cables to the heating circuit distributors

is done via the ground.

The thermal insulation of the pipes is correspondingly

according to the requirements of the JIT. The insulations

the main distribution and the risers consist of

diffusion-tight, aluminum-laminated mineral wool, which is produced in

visible areas and the technical centre with aluminium

Coarse grain film.

Construction times:

Start of raw installation KW36 2023

Completion of interior fittings CW19 2024