Ensuring that the thermal comfort conditions in offices are in line with the preferences of the occupants, is one of the main aims of a heating/cooling control system, in order to save energy, increase productivity and reduce sick leave days. The industry standard approach for modelling occupant comfort is Fanger’s Predicted Mean Vote (PMV). Although PMV is able to predict user thermal satisfac...

The Urban Heat Island effect concerns the higher air temperature in urban environment with respect to the rural one. This phenomenon has been well known for hundreds of years, but it has been experimentally studied only for the last few decades and in large metropolis. The paper reports on the experimental results obtained during the period 2010–2011 in a medium size city of Italy by the resear...

One of the main consumers of energy in buildings are the HVAC systems intended to maintain the internal environment for the comfort and safety of the occupants. Occupant satisfaction, is influenced by many different factors, including air temperature, radiant temperature, humidity, the outdoor environment, activity levels and clothing. Occupant thermal comfort is traditionally measured by the P...

Abstract: We present an instrumentation devoted to the mapping of indoor ambient conditions by an infrared camera. In addition to a measurement grid composed of several spherical sensors, an infrared camera is used to visualize and quantify the spatial distribution of the air temperature, the air speed, and the mean radiant temperature. A suitable procedure is developed so that from its tempera...

This article analyzes students' opinions about thermal comfort in air-conditioned classrooms. field study monitored and recorded the following variables: Air temperature (°C), Mean radiant Humidity (%), velocity (m/s). In addition, a survey was answered by 169 students to collect sensation preferences according ASHRAE sensory scale. The results show neutral found from votes 28.2°C with 98% of f...

INTRODUCTION A significant number of healthcare workers have responded to aid in the relief and containment of the 2013 Ebola virus disease (EVD) outbreak in West Africa. Healthcare workers are required to wear personal protective clothing (PPC) to impede the transmission of the virus; however, the impermeable design and the hot humid environment lead to risk of heat stress. OBJECTIVE Provide...

Th is paper discusses human thermoregulation and how this relates to health problems during exposure to climatic stress. Th e heat exchange of the body with the environment is described in terms of the heat balance equation which determines whether the body heats up, remains at stable temperature, or cools. Inside the body the thermoregulatory control aims at creating the right conditions of he...

Mean radiant temperature (MRT) is one of the six primary factors that determine thermal comfort in a given environment. In this study, average was determined using calculation method based on surrounding surface temperatures and view factors. The present study specifically investigated use calculated temperature, compared to measured for predicting mean vote (PMV) percentage dissatisfied (PPD) ...

An acute Actinobacillus pleuropneumonia challenge was used to study changes in rectal and radiant surface temperatures over 18 h. From 3.5 to 15 h after challenge, rectal temperatures were elevated in challenged pigs compared to nonchallenged controls. From 6 through 18 h after challenge, infrared surface temperature was higher for challenged pigs versus control nonchallenged pigs. Correlation ...