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Building Integrated Renewable Energy, Stevenage Borough Council Offices

Introduction

Revival is a five year European project, which aims to demonstrate how buildings from the post-war era can be economically refurbished to incorporate improvements in energy performance. Daneshill House, the office building for Stevenage Borough Council, was the UK case study.

The works carried out on Daneshill House demonstrate that a 1950s office building can be refurbished to provide good quality, high density office accommodation without the need to resort to full air conditioning. 

Description

The Stevenage project was made up of a number of individual packages; with a common theme of the use of thermal mass and night ventilation to provide cooling in summertime. The technologies introduced were the use of:

  • ‘Phase Change Material’ to increase the thermal storage capacity of the building.
  • A mechanical night cooling system using the hidden mass of the building.
  • Low energy lighting with solar and occupancy controls
  • A solar hot water collection system.
  • Alterations to BEMS* to allow free cooling periods for existing full air conditioned areas of the building.

*A Building energy management system (BEMS) is a computerised system used to control, manage and monitor the energy use in building.

Environmental benefits

Cooling system - the hidden mass of the building can be used to provide an effective cooling system for most of the summer months.

LED lighting - figures show that the system used 39.22 kWh/m2/year compared to usage of 54 kWh/m2/year for a typical office of this type. 

Solar hot water system - during 2007, the solar hot water system generated approximately a third of all hot water used in the building.