heating and cooling

The energy demand for heating is decreasing significantly in modern highly-insulated dwellings. Due to larger glass areas and well insulated buildings overheating becomes a problem. In a research project several hydraulic schemes with ground-coupled heat pumps and passive cooling with borehole heat exchanger have been evaluated. A parametric study with MATLAB/Simulink simulations using a residential low-energy building with floor heating system has been carried out. Simultaneous simulation of building and mechanical system showed dynamic interaction of floor and ground heat exchanger.

The European Commission has mandated CEN to produce a set of standards to support MemberStates for the national implementation of the EPBD. This paper focuses on one of these standards,EN ISO 13790, "Energy performance of buildings - Calculation of energy use for space heating andcooling". It describes the history of this standard which started with a simplified calculation of the energyuse for heating of residential buildings only.

The purpose of this study is to investigate the actual conditions of the energy consumption of varioustypes of inhabited houses (e.g., wooden detached houses and condominiums) in the Niigata area. Afield survey was carried out from November 2002 to March 2005, and the energy consumption levelsfor the various uses were measured continuously. This paper describes the energy consumptions of alluses (e.g., electricity, oil, gas) in the house types.