This work is focused on indoor thermal comfort control problem in buildings equipped with HVAC (Heating Ventilation and Air Conditioning) systems. The occupants thermal comfort is addressed here by a comfort zone in the psychrometric chart and the PMV (Predict Mean Vote) index. In this context, three control algorithms are proposed by using only-one-actuator system associated to a heating equip...

Water activities (potentials) in plant materials were measured over the range from free water to oven dryness with a Spanner thermocouple psychrometer. In a two-step procedure, water was first condensed on the thermocouple junction for several minutes. The sample was then inserted under the wet thermocouple and the maximum psychrometric cooling was measured in about 10 seconds. Calibration was ...

The indoor thermal and humid environment of the solar greenhouse, especially air humidity, is studied by field test psychrometric chart. First, temperature relative radiation in greenhouse were tested tests. According to results, Solar has a great influence on humidity greenhouse. vary dramatically presence radiation. At night, although meets requirements crop growth, close 90%, far higher than...

The turbine floor of the main plant is an important part in underground pumped storage hydropower plants.The health personnel and safe operation equipment are endangered due to high space humidity water seepage through walls. In this paper, numerical simulations were used study thermal environment summer. Two working conditions with without dissipation computed compared. psychrometric chart was...

OBJECTIVES To examine the incidence, clinical state, personal risk factors, haematology, and biochemistry of heat exhaustion occurring at a deep underground metalliferous mine. To describe the underground thermal conditions associated with the occurrence of heat exhaustion. METHODS A 1 year prospective case series of acute heat exhaustion was undertaken. A history was obtained with a structur...