The article discusses possible differences in subjective assessment of thermal sensations people the intelligent building "Energis" Kielce University Technology with a focus on impact gender. measurements took place 52 educational rooms, during which 1143 questionnaire forms were collected from respondents. Thermal sensation, acceptability, and preference votes analyzed. results indicate that women men might perceive indoor environment differently. Generally speaking, seemed to rate colder...

Problems with inaccurate prediction of electricity generation from photovoltaic (PV) farms cause severe operational, technical, and financial risks, which seriously affect both their owners grid operators. Proper results are required for optimal planning the spinning reserve as well managing inertia frequency response in case contingency events. In this work, impact a number meteorological parameters on PV Poland was analyzed using Pearson coefficient. Furthermore, seven machine learning...

This paper experimentally analyses an indoor environment assessment of a large group respondents regarding their subjective perception overall comfort, air quality and humidity. The questionnaire survey was applied as testing method together with measurements the physical parameters conducted microclimate meter. Two types were analysed: educational rooms climate chamber. comparative analysis sensations experienced within them indicates that they generate quite similar responses; however,...

The paper presents the thermal resistance characteristics of walls with multilayer reflective insulation. tests have been performed using a heat flow meter to determine resistivity layers simulating partition in buildings. A modification structure has also proposed and analysed view increase and, consequently, reduce flux transferred through walls. Consequently, produced that ensure higher insulation lead better performance properties whole buildings, which heating/cooling costs throughout year.

The article presents the fossil fuels combustion effects in terms of dangers increasing CO2 concentration atmosphere.Based on bibliography review negative impact increased carbon dioxide human population is shown area external environment, particularly air pollution and especially health.The paper biomass as renewable energy alternative source to which gives a neutral emissions therefore should be main carrier primary Poland.The heat results humidity selected dry wood pellets (pellets straw,...

This paper presents the developed mathematical models that characterize thermal-air regime of a ventilated attic in summer and winter seasons. The relevance was shown examples applying these to solve some engineering problems were presented. Mathematical can be used analyze evaluate changes temperature heat flux (the radiant convective component) along air movement select materials for roof floor, as well calculation ventilation different climatic conditions.

In the first part of this series, we discussed that building structure, energy efficiency, indoor environmental quality, and moisture management all need to be considered simultaneously ensure durability materials control cost near-zero buildings. These factors must addressed through contributions whole design team. It is also evident physics take an active role in development The good environment limit buildings led integrated process now typical Canada for low-energy Furthermore,...

The indoor environment of buildings significantly affects the well-being and health room users. Experiencing thermal discomfort reduces concentration productivity during study or work, causing drowsiness, fatigue deterioration in general well-being. focuses on presenting results questionnaire symptoms sick building syndromes (SBS), namely: dizziness, nausea, eye pain nasal mucosa, experienced by 69 students a lecture large modern auditorium Kielce University Technology. show that many SBS...

This paper presents experimental and theoretical studies of heat transfer through single- double-glazed windows with electrical heating the internal surfaces. Heating is achieved by applying a voltage to low emissivity coating inner glass. A thermophysical model has been developed simulate these units, allowing us determine their thermal characteristics. Experimental data are used validate numerical model. The resulting flux temperature distributions on external surfaces electrically heated...

The article discusses convectional elements of a building's passive solar heating systems. Mathematical description heat transfer and air movement processes in the convection is presented as an equation set differential form. equations allows determination temperature distribution element well flow being supplied into room. At same time, it possible to analyze structural factors influencing flow. mathematical illustrated by examples calculations diagrams elements.

Nowadays, we can observe a growing interest in passive buildings due to global climate change, environmental concerns, and energy costs. However, developing building is associated with meeting many Passive House requirements, which results their increased complexity as well challenges risks could threaten the successful completion of project. Risk management key tool enabling today’s challenging house project’s demands connected quality, costs, deadlines, legal issues. In this paper, new...

This work presents and verifies the model air transfer in a horizontal, naturally ventilated cavity that could be under flat roof or building as crawl space. In this article, space is represented rectangular channel with cooled top heated bottom walls each either cooled. Temperature of all wall surfaces varies along attic length. The allows estimating temperatures for low velocity airflow channel. results calculations were compared field experiment agreed within estimated errors model, is, <9%.

For the needs of this paper, certain area issues associated with infiltration process and neural networks were selected. In scope process, measurements analysis air through buildings have shown how difficult is in terms strict mathematical models formulation. networks, attention was given to multi‐layer perceptrons systems composed them. It must be noted that, due novelty method, a detailed description neuron network theory presented paper as well thorough discussion modelling process. The...

Wooden construction constitutes a specific branch of the building industry that focuses on high-quality materials, developed sense aesthetics connected with comfort and functionality, concern for ecology durability. This type has positive effect human quality life. article modular frame technological aspects wooden houses built according to Canadian or Scandinavian technologies. Taking weather conditions countries into consideration, timber is popular material, which, when preserving certain...

Thermal comfort and lighting conditions are essential aspects of indoor environmental quality. They considered to influence the productivity room users. The paper presents experimental test results research conducted in university educational building Kielce University Technology (Central Poland) using anonymous questionnaires physical measurements air parameters with a high-precision microclimate meter. It covers analysis subjective assessment thermal sensations, acceptability preference,...