INTEGRATED HEATING, VENTILATION AND NATURAL AIR CONDITIONING IN AN OFFICE BUILDING

Información del proyecto

Identificador del acuerdo de subvención: EE.-00261-84

Proyecto cerrado

Fecha de inicio 1 Enero 1985

Fecha de finalización 31 Diciembre 1987

Financiado con arreglo a

• Programme (EEC) of demonstration projects relating to the exploitation of alternative energy sources and to energy saving and the substitution of hydrocarbons, 1983-1985

Coste total

€ 328 718,00

Aportación de la UE

€ 131 487,00

Coordinado por

VORWERK
Germany

Objetivo

A 2400 m2 existing office building has to be refurnished to allow the proper use of monitors, micro-computers etc... . The building is to be equipped with an integrated HVAC installation. The relevant electricity consumption should not exceed 34 MWh/yr and the inside temperature should not be higher than 26 deg. C. except during a maximum of 100 hrs per year.
During Phase 1 the team was faced with technical problems regarding space needed for the air ducts as well as regarding the limited floor-to-floor heights. A warm air supply under the windows had to be cancelled and the shape of the air ducts could not be optimized.
During Phase 2, the team was faced with higher bids than estimated. This was partially due to the problems mentioned above as well as to the innovative character of the installation.
No important modifications had to be brought to the initial project neither in Phase 1, nor in Phase 2.
Within Phase 3 the heating system was (partially) tested during the very cold period of winter 86-87. All rooms were adequately warm except some corner rooms where complaints were expressed about too low temperatures (although measurements showed 20 deg. C). A change in the automatic control would manage these complaints.
No new estimates for the savings were made.
It was stated that the number of operating hours with an inside temperature exceeding 26 deg. C was 175 hr/year (vs 100 as predicted) and that the electricity consumption approximated 52340 kWh/year (vs 34000 as predicted).
An additional 95 mm hollow floor is provided for the flexible distribution of wires for data transmission and of cables for power supply to the monitors, computers,... .
The project integrates the design for the heating, ventilation and air conditioning of the offices with the design of flexible wiring and cabling.
The ventilation of the offices will be performed through floor grills, supplied with air distributed through the cavities of the hollow floor instead of through the existing air ducts.
During the night, fresh cool outdoor air will flow through the cavities and cool the concrete floor. During the summer the absorbed cold can be released through the air supplied to the offices, and by this way perform free cooling. During the winter the system can be used for (air) floor heating. Heat recuperation is provided on the warm air rejected during the cold season.
Phases of the project are as follows:
1. Design
2. Implementation
3. Monitoring
4. Assessment of results.

Programa(s)

• ENG-ENALT 2C - Programme (EEC) of demonstration projects relating to the exploitation of alternative energy sources and to energy saving and the substitution of hydrocarbons, 1983-1985

Tema(s)

• 3.1 - BUILDINGS

Convocatoria de propuestas

Datos no disponibles

Régimen de financiación

DEM - Demonstration contracts

Coordinador

VORWERK

• Aportación de la UE: Sin datos
• Dirección: MUEHLENWEG 17-37 POSTFACH 20 16 11 ; 5600 Wuppertal ; Alemania
• Coste total: Sin datos