Building design for mixed mode systems.

Mixed mode buildings are attracting a considerable amount of interest due to their apparent potential to deliver comfortable, healthy conditions with significant energy and environmental benefits. BRE and WBA are currently engaged in a three year research programme to generate the guidance necessary to achieve the effective integration of various mixed mode strategies into the most appropriate building forms, considering the occupying organisation's mode of operation. The project will culminate in the production of a CIBSE Applications Manual. This paper reports on an a state of the art review of mixed mode designs, discussing findings related to best practice system design, and other practical issues that might affect the successful operation of the installed system. The paper also considers the acceptability of mixed mode buildings to the marketplace in terms of their attractiveness to developers and potential tenants.