GAS MIXTURES AND PSYCHROMETRICS Up
... In this chapter, we deal with nonreacting gas mixtures. A nonreacting gas mixture can be treated as a pure substance since it is usually a homogeneous mixture of different gases. The properties of a gas mixture obviously will depend on the properties of the individual gases (called components or con ...
... In this chapter, we deal with nonreacting gas mixtures. A nonreacting gas mixture can be treated as a pure substance since it is usually a homogeneous mixture of different gases. The properties of a gas mixture obviously will depend on the properties of the individual gases (called components or con ...
Advances in dehydration of foods
... to describe the interface transfer of mass and energy between a gas and a pure liquid when they are brought into contact. The term covers not only humidi®cation but also dehumidi®cation of the gases, measurement of vapor content, and cooling of both gases and liquids. For air±water mixtures the term ...
... to describe the interface transfer of mass and energy between a gas and a pure liquid when they are brought into contact. The term covers not only humidi®cation but also dehumidi®cation of the gases, measurement of vapor content, and cooling of both gases and liquids. For air±water mixtures the term ...
Compressed Earth Block & Strawbale Home: Monitoring and
... straw-bales, and exterior earthen plaster finish all contain high moisture contents when installed. It is important to deal with these high amounts of moisture soon after the building is complete in order to avoid potential durability issues (e.g. mould and rot). This is done by maximizing the dryin ...
... straw-bales, and exterior earthen plaster finish all contain high moisture contents when installed. It is important to deal with these high amounts of moisture soon after the building is complete in order to avoid potential durability issues (e.g. mould and rot). This is done by maximizing the dryin ...
Alaska Housing Manual - Alaska Housing Finance Corporation
... This book is written for people involved in the building industry in Alaska: architects, engineers, materials suppliers, contractors, construction crews, municipal grant recipients, and permitting and regulatory agencies. The book is also intended as useful information for anyone interested in const ...
... This book is written for people involved in the building industry in Alaska: architects, engineers, materials suppliers, contractors, construction crews, municipal grant recipients, and permitting and regulatory agencies. The book is also intended as useful information for anyone interested in const ...
Multizone Air Flow Modelling (COMIS) - IEA-EBC
... straightforward problem since the air is contained within ducts or similar components, whose flow characteristics are well understood, and it is driven by fans with known pressure-flow characteristics. Techniques and calculation methods have been developed for the design and sizing of such systems. ...
... straightforward problem since the air is contained within ducts or similar components, whose flow characteristics are well understood, and it is driven by fans with known pressure-flow characteristics. Techniques and calculation methods have been developed for the design and sizing of such systems. ...
Building Air Quality: A Guide for Building Owners and Facility
... Section 2: Factors Affecting Indoor Air Quality........................................................ 5 Sources of Indoor Air Contaminants .....................................................................................5 HVAC System Design and Operation........................................ ...
... Section 2: Factors Affecting Indoor Air Quality........................................................ 5 Sources of Indoor Air Contaminants .....................................................................................5 HVAC System Design and Operation........................................ ...
Condensation Targeter II: Modelling surface
... Because of the relatively high vapour resistivity of most building fabrics diffusion is a negligible factor accounting for approximately 1% of the moisture transferred by bulk air movement. The hygroscopic impact is far more difficult to predict and several attempts have been made to find simple met ...
... Because of the relatively high vapour resistivity of most building fabrics diffusion is a negligible factor accounting for approximately 1% of the moisture transferred by bulk air movement. The hygroscopic impact is far more difficult to predict and several attempts have been made to find simple met ...
Thermoelectric Cooling A Closer Look.indd
... the reduced need for maintenance and replacement parts must be considered as part of the value added to using the technology. Under normal conditions, a thermoelectric air conditioner may last 7 years (or much longer in some cases), without requiring a repair. Recent Changes to Thermoelectric Techno ...
... the reduced need for maintenance and replacement parts must be considered as part of the value added to using the technology. Under normal conditions, a thermoelectric air conditioner may last 7 years (or much longer in some cases), without requiring a repair. Recent Changes to Thermoelectric Techno ...
ApacheSim Calculation Methods - Integrated Environmental Solutions
... simulation is driven by real weather data and may cover any period from a day to a year. The time-evolution of the building’s thermal conditions is traced at intervals as small as one minute. Results output by the simulation include: • Comfort statistics • Energy consumption • Carbon emissions • Roo ...
... simulation is driven by real weather data and may cover any period from a day to a year. The time-evolution of the building’s thermal conditions is traced at intervals as small as one minute. Results output by the simulation include: • Comfort statistics • Energy consumption • Carbon emissions • Roo ...
Document
... Abstract. Early design decisions with regard to building facade characteristics play a significant role in the resulting building's thermal performance. In this context, external metal mesh screens used as a permanent second facade skin- are a rather new shading alternative, particularly in nonresid ...
... Abstract. Early design decisions with regard to building facade characteristics play a significant role in the resulting building's thermal performance. In this context, external metal mesh screens used as a permanent second facade skin- are a rather new shading alternative, particularly in nonresid ...
public deliverables - Climate for Culture
... system. That means all the ideas of these old techniques were taken to improve indoor climate in these historic buildings, which in summer are ‘overrun’ by tourists, at least in Vienna and in Bavaria. Since the managers of these castles are very conscious of cost and sustainability they ...
... system. That means all the ideas of these old techniques were taken to improve indoor climate in these historic buildings, which in summer are ‘overrun’ by tourists, at least in Vienna and in Bavaria. Since the managers of these castles are very conscious of cost and sustainability they ...
Refrigeration And Air Conditioning
... some of which are also widely used as aerosol propellants, foams, and solvents, are now categorized as chlorofluorocarbons (CFCs), hydrochlorofluorocarbons (HCFCs), or hydrofluorocarbons (HFCs). The HFCs, lacking chlorine, are no threat to the ozone layer but are not in common usage as refrigerants. ...
... some of which are also widely used as aerosol propellants, foams, and solvents, are now categorized as chlorofluorocarbons (CFCs), hydrochlorofluorocarbons (HCFCs), or hydrofluorocarbons (HFCs). The HFCs, lacking chlorine, are no threat to the ozone layer but are not in common usage as refrigerants. ...
Glossary
... Unit used for quantifying air flow . acceptable air quality Air in which there are no known contaminants at harmful concentrations as determined by specialist authorities and with which a substantial majority (80 % or more) of the people exposed do not express dissatisfaction. (ASHRAE ...
... Unit used for quantifying air flow . acceptable air quality Air in which there are no known contaminants at harmful concentrations as determined by specialist authorities and with which a substantial majority (80 % or more) of the people exposed do not express dissatisfaction. (ASHRAE ...
pdf - University Of Nigeria Nsukka
... compact and centralized space on single but communicable levels. Centralized locations were appropriated for activity spaces or activities that are most often used by the majority (Uzuegbunam, 2011). Ventilation and Exhaust system, which is also BernoulliVenturi effect, was the base design strategy ...
... compact and centralized space on single but communicable levels. Centralized locations were appropriated for activity spaces or activities that are most often used by the majority (Uzuegbunam, 2011). Ventilation and Exhaust system, which is also BernoulliVenturi effect, was the base design strategy ...
Thermal Performance of Tropical Atrium
... Natural ventilation of the atrium can decrease negative impacts of overheating in internal spaces. In naturally ventilated buildings, the heat at the top of the atrium exits by the wind driving force and stack effect. Indeed, the stack effect lifts air from the lower part of the atrium to the top se ...
... Natural ventilation of the atrium can decrease negative impacts of overheating in internal spaces. In naturally ventilated buildings, the heat at the top of the atrium exits by the wind driving force and stack effect. Indeed, the stack effect lifts air from the lower part of the atrium to the top se ...
Ventilation and Infiltration - Moodle
... Air exchange of outdoor air with the air already in a building can be divided into two broad classifications: ventilation and infiltration. Ventilation air is air used to provide acceptable indoor air quality. It may be composed of forced or natural ventilation, infiltration, suitably treated recirc ...
... Air exchange of outdoor air with the air already in a building can be divided into two broad classifications: ventilation and infiltration. Ventilation air is air used to provide acceptable indoor air quality. It may be composed of forced or natural ventilation, infiltration, suitably treated recirc ...
FINAL REPORT OF THE MONTGOMERY COUNTY PUBLIC SCHOOLS March 4, 1998
... has been little to no money spent on preventive maintenance of elementary or middle school unit ventilators, high school air handling units, and other mechanical equipment essential to providing clean air to our classrooms. Dirty unit ventilator internal surfaces are often fouled with mold populatio ...
... has been little to no money spent on preventive maintenance of elementary or middle school unit ventilators, high school air handling units, and other mechanical equipment essential to providing clean air to our classrooms. Dirty unit ventilator internal surfaces are often fouled with mold populatio ...
Aalborg Universitet Modelling of Natural and Hybrid Ventilation Heiselberg, Per Kvols
... incoming air should be at a lower temperature that the indoor air temperature. However, even at higher temperatures, the resulting air flow inside the space can cause a positive effect on the thermal comfort conditions of the occupants, since it increases heat dissipation from the human body end enh ...
... incoming air should be at a lower temperature that the indoor air temperature. However, even at higher temperatures, the resulting air flow inside the space can cause a positive effect on the thermal comfort conditions of the occupants, since it increases heat dissipation from the human body end enh ...
Towards improved performances of mechanical ventilation systems
... STANDARDS Ventilation in buildings is required to: • deliver fresh (outside) air for people in rooms • dilute and remove polluted air from the building • reduce peoples exposure to microbiological hazards • prevent moisture damage to the building construction. The ventilation requirements in standar ...
... STANDARDS Ventilation in buildings is required to: • deliver fresh (outside) air for people in rooms • dilute and remove polluted air from the building • reduce peoples exposure to microbiological hazards • prevent moisture damage to the building construction. The ventilation requirements in standar ...
Thermal Performance of Rooftop Greenery system in Tropical
... post-operative days, strong and medium level of painkillers and complained less than patients who are looking at a bare brick wall. This appears to be one of many benefits of the developing field known as “Horticultural Therapy”, whereby patients gain exposure to living plants and thus they are able ...
... post-operative days, strong and medium level of painkillers and complained less than patients who are looking at a bare brick wall. This appears to be one of many benefits of the developing field known as “Horticultural Therapy”, whereby patients gain exposure to living plants and thus they are able ...
INFLUENCE OF GRASS COVER ON FLAT REINFORCED
... However, the concrete roof slabs do not perform satisfactorily in warm humid tropical climate conditions [5] because they act as heated bodies and emit long wave radiation into the occupants in the day time. As a result, indoor thermal comfort of the buildings which having concrete roof slabs become ...
... However, the concrete roof slabs do not perform satisfactorily in warm humid tropical climate conditions [5] because they act as heated bodies and emit long wave radiation into the occupants in the day time. As a result, indoor thermal comfort of the buildings which having concrete roof slabs become ...
Thermal Comfort of Spectators in Stadia Built in Hot Climates
... flow rates and temperatures that are necessary to achieve the target comfort conditions. Results obtained from the detailed thermal and air flow analysis indicated that the comfort targets were been achieved for the sample case study, which covered a representative section of the stadium. Benefits w ...
... flow rates and temperatures that are necessary to achieve the target comfort conditions. Results obtained from the detailed thermal and air flow analysis indicated that the comfort targets were been achieved for the sample case study, which covered a representative section of the stadium. Benefits w ...
TOTAL EMISSIVITY OF CARBON DIOXIDE AND ITS
... Another problem with the formula is that it represents homogeneous values for the total emissivity and total absorptivity of the absorbent gas, which is absolutely at odds with what has been observed and verified through experimentation because the total emissivity and total absorptivity of any subs ...
... Another problem with the formula is that it represents homogeneous values for the total emissivity and total absorptivity of the absorbent gas, which is absolutely at odds with what has been observed and verified through experimentation because the total emissivity and total absorptivity of any subs ...
Impact of sustainable office buildings on occupant`s comfort and
... needs and enhancement of their comfort and health level. Hence, the analysis of each individual’s conditions gains importance. 2.2 Comfort In general, comfort is defined by the absence of unpleasant sensations, which has a positive effect on well-being. What factors cause discomfort is subjective an ...
... needs and enhancement of their comfort and health level. Hence, the analysis of each individual’s conditions gains importance. 2.2 Comfort In general, comfort is defined by the absence of unpleasant sensations, which has a positive effect on well-being. What factors cause discomfort is subjective an ...
Indoor air quality
Indoor air quality (IAQ) is a term which refers to the air quality within and around buildings and structures, especially as it relates to the health and comfort of building occupants.IAQ can be affected by gases (including carbon monoxide, radon, volatile organic compounds), particulates, microbial contaminants (mold, bacteria), or any mass or energy stressor that can induce adverse health conditions. Source control, filtration and the use of ventilation to dilute contaminants are the primary methods for improving indoor air quality in most buildings. Residential units can further improve indoor air quality by routine cleaning of carpets and area rugs. EPA has guidelines for frequency of cleaning based on traffic, number of household members, pets, children and smokers. Carpets and rugs act like an air filter and must be cleaned.Determination of IAQ involves the collection of air samples, monitoring human exposure to pollutants, collection of samples on building surfaces, and computer modelling of air flow inside buildings.IAQ is part of indoor environmental quality (IEQ), which includes IAQ as well as other physical and psychological aspects of life indoors (e.g., lighting, visual quality, acoustics, and thermal comfort).Indoor air pollution in developing nations is by far the most deadly risk globally. A major source of indoor air pollution in developing countries is the burning of biomass (e.g. wood, charcoal, dung, or crop residue) for heating and cooking. The resulting exposure to high levels of particulate matter resulted in between 1.5 million and 2 million deaths in 2000.