Objective Objectives The project aims to develop and evaluate a novel heat pipe heat recovery system for use in naturally-ventilated buildings using passive stack ventilation. Solar/wind energy solutions to assist the ventilation flows are also included in the development work. Special attention will be paid to the total energy efficiency of the system together with indoor air quality. Technical Approach Natural ventilation is being applied to an increasing number of new buildings across Europe to minimize reliance on mechanical ventilation and so reduce emission of greenhouse gases. However, virtually all passive solar ventilation (PSV) systems are designed and constructed without incorporating heat recovery, leading to wasteful heat loss. The heat loss can effectively be decreased using heat recovery. However, the heat recovery reduces the stack effect driving the air flows in the ventilation system. To avoid too small air flows and possible indoor air quality problems, some flow assisting solutions must be added to the system. The assistance of flows will be done using solar/wind energy devices. The project is broken down into four work packages in the following way: WP1: Design and construction of the heat pipe heat recovery system, WP2: Design and construction of the ventilation flow assisting and controlling solutions, WP3: Optimisation of the whole system, WP4: Testing and evaluating of the system performance. Expected Achievements and Exploitation The project is expected to produce a pilot ventilation system having the features mentioned above and monitored results of the performance of the system when installed in a building. The system developed is of prime interest to ventilation companies, manufacturers of heat pipe recovery systems and solar/wind energy systems. It could be further developed into a new product, which should find a growing market in Europe and beyond, particularly in view of the increasing awareness of energy conservation and utilisation of natural ventilation throughout the world. Fields of science natural sciencesphysical sciencesastronomygalactic astronomysolar physicsengineering and technologyenvironmental engineeringenergy and fuelsrenewable energywind powerengineering and technologyenvironmental engineeringair pollution engineering Programme(s) FP4-NNE-JOULE C - Specific programme for research and technological development, including demonstration in the field of non-nuclear energy, 1994-1998 Topic(s) 0303 - Renewable energies in buildings Call for proposal Data not available Funding Scheme CSC - Cost-sharing contracts Coordinator Helsinki University of Technology Address 4,sahkomiehentie 02150 Espoo Finland See on map EU contribution € 0,00 Participants (3) Sort alphabetically Sort by EU Contribution Expand all Collapse all Sulzer Infra (Schweiz) AG Switzerland EU contribution € 0,00 Address Neuwiesenstrasse 8401 Winterthur See on map UNIVERSITY OF PORTO Portugal EU contribution € 0,00 Address Rua dr. roberto frias 4200-465 Porto See on map University of Nottingham GB EU contribution € 0,00 Address University park NG7 2RD Nottingham See on map