Field measurements and numerical analysis on operating modes of a radiant floor heating aided by a warm air system in a large single-zone church

Space heating can constitute 60–80% of the total energy use buildings in cold climates. Efficient techniques still rely on operating strategies. In this paper, a church with radiant floor climate is taken as case large single-zone building to analyze for heating. Field measurements and numerical analysis are both used study. Different modes heating, including intermittent constant set-point compared saving, reliability indoor climate, thermal comfort. The by an all-air system supplied air temperature control results highest use. aided warm (return control) least affected outdoor best met comfort requirements throughout season. main novelty that mode cyclic proposed. It found small inertia systems should be preferred when reduce warm-up period. suggest how operate building.