Beyond biomimicry: What termites can tell us about realizing the
... (Figure 3). To counter this, Eastgate makes clever use of a daily fan-driven ventilation cycle: low-capacity fans operate during the day, while high capacity fans operate at night. During Harare’s typically warm days, the low volume turnover of air in the building facilitates heat storage in the bui ...
... (Figure 3). To counter this, Eastgate makes clever use of a daily fan-driven ventilation cycle: low-capacity fans operate during the day, while high capacity fans operate at night. During Harare’s typically warm days, the low volume turnover of air in the building facilitates heat storage in the bui ...
_NABERS Indoor Environment Guide_BV Edit
... standard for measuring and benchmarking the environmental performance of existing Australian buildings. NABERS is managed nationally by the Office of Environment and Heritage NSW (OEH) on behalf of Australian, state and territory governments. The NABERS approach to rating the environmental performan ...
... standard for measuring and benchmarking the environmental performance of existing Australian buildings. NABERS is managed nationally by the Office of Environment and Heritage NSW (OEH) on behalf of Australian, state and territory governments. The NABERS approach to rating the environmental performan ...
Ventilation and Infiltration - Moodle
... In most of the United States, residential buildings typically rely on infiltration and natural ventilation to meet their ventilation needs. Neither is reliable for ventilation purposes because they depend on weather conditions, building construction, and maintenance. However, natural ventilation, us ...
... In most of the United States, residential buildings typically rely on infiltration and natural ventilation to meet their ventilation needs. Neither is reliable for ventilation purposes because they depend on weather conditions, building construction, and maintenance. However, natural ventilation, us ...
STEEL CONSTRUCTION Thermal Mass
... through a combination of renewable energy, mixed-mode ventilation, extensive use of thermal mass and a sophisticated building management system, it has been possible to reduce carbon emissions by around 50% compared to current national standards for offices. The frame comprises fabricated steel beam ...
... through a combination of renewable energy, mixed-mode ventilation, extensive use of thermal mass and a sophisticated building management system, it has been possible to reduce carbon emissions by around 50% compared to current national standards for offices. The frame comprises fabricated steel beam ...
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... buildings. Building envelopes were leaky and cleaning can be provided for all the pollutant indoor moisture and other indoor pollutants were sources except for people. Ventilation is then able to move outdoors (in heating climates) provided for the people. This can be rephrased through the leakage o ...
... buildings. Building envelopes were leaky and cleaning can be provided for all the pollutant indoor moisture and other indoor pollutants were sources except for people. Ventilation is then able to move outdoors (in heating climates) provided for the people. This can be rephrased through the leakage o ...
Exhaust Ventilation and Radon Induction in a Subarctic Climate
... of radon seems to greatly decline in summer. But the pressure differential over the building shell, the opening of windows for ventilation, the absence of frozen soil at the ground surface, and lower soil gas pressure all probably play a role. During the winter however, the radon levels fluctuate gr ...
... of radon seems to greatly decline in summer. But the pressure differential over the building shell, the opening of windows for ventilation, the absence of frozen soil at the ground surface, and lower soil gas pressure all probably play a role. During the winter however, the radon levels fluctuate gr ...
energy recovery ventilation
... the sensible heat of the exchanged air, and b) (ERV), that can recover sensible heat and latent heat from the exchanged air. ERV is also referred to as enthalpy recovery. Sensible heat is the temperature of the fluid, which can be measured with a thermometer, and latent heat is the energy needed for ...
... the sensible heat of the exchanged air, and b) (ERV), that can recover sensible heat and latent heat from the exchanged air. ERV is also referred to as enthalpy recovery. Sensible heat is the temperature of the fluid, which can be measured with a thermometer, and latent heat is the energy needed for ...
in the Sultanate of Oman
... the selected locations in the SQU library were lower than the NIOSH acceptable limit of 30,000 ppm [25]; however, it was at an unacceptable level as determined by ASHRAE [20] standards. This suggests the necessity of maintaining a steady-state CO 2 level which, to remove human generated pollutants, ...
... the selected locations in the SQU library were lower than the NIOSH acceptable limit of 30,000 ppm [25]; however, it was at an unacceptable level as determined by ASHRAE [20] standards. This suggests the necessity of maintaining a steady-state CO 2 level which, to remove human generated pollutants, ...
205_ch2 - BRE Projects
... The four atria are mechanically ventilated during the day, but provide manual window access to the surrounding offices which are naturally ventilated. At night time the atria and the offices are naturally ventilated. ...
... The four atria are mechanically ventilated during the day, but provide manual window access to the surrounding offices which are naturally ventilated. At night time the atria and the offices are naturally ventilated. ...
The EWZ building .(English)
... The four atria are mechanically ventilated during the day, but provide manual window access to the surrounding offices which are naturally ventilated. At night time the atria and the offices are naturally ventilated. ...
... The four atria are mechanically ventilated during the day, but provide manual window access to the surrounding offices which are naturally ventilated. At night time the atria and the offices are naturally ventilated. ...
Fabric and ventilation heat loss
... • Heat flows from hot areas to cold areas. (Second law of thermodynamics) • Most people like to live and work in room temperatures of approximately 20 0C. • In many European countries, outside air temperatures in winter are well below 20 0C. • Heat from warm areas flows out through the fabric of the ...
... • Heat flows from hot areas to cold areas. (Second law of thermodynamics) • Most people like to live and work in room temperatures of approximately 20 0C. • In many European countries, outside air temperatures in winter are well below 20 0C. • Heat from warm areas flows out through the fabric of the ...
Aalborg Universitet Modelling of Natural and Hybrid Ventilation Heiselberg, Per Kvols
... they are installed. They can also be installed in existing buildings after a few modifications. In contrast, ventilation systems using only natural forces such as wind and thermal buoyancy need to be designed together with the building, since the building itself and its components are the elements t ...
... they are installed. They can also be installed in existing buildings after a few modifications. In contrast, ventilation systems using only natural forces such as wind and thermal buoyancy need to be designed together with the building, since the building itself and its components are the elements t ...
Thermal Applications
... The input data requirements of the thermal applications are summarised below. The data is managed by utility programs invoked from the Application Views. Where possible, applications access common data so that it is never necessary to re-enter values in order to carry out different types of analysis ...
... The input data requirements of the thermal applications are summarised below. The data is managed by utility programs invoked from the Application Views. Where possible, applications access common data so that it is never necessary to re-enter values in order to carry out different types of analysis ...
vaulted ceilings
... requirements of the building where they can be used in place of more traditional construction systems such as flat slab, steel decking or composite With the implementation of this system, it is possible to realise the wider potential that key structural materials can offer to improve the operational ...
... requirements of the building where they can be used in place of more traditional construction systems such as flat slab, steel decking or composite With the implementation of this system, it is possible to realise the wider potential that key structural materials can offer to improve the operational ...
part 7 case studies
... the top floor during the summer. From the observation of the three traditional houses several points were noted. Mud is the main material for both roofs and walls. All the rooms are lit and ventilated in different ways. The windows which are small, open on to interior lightwells, shady or covered st ...
... the top floor during the summer. From the observation of the three traditional houses several points were noted. Mud is the main material for both roofs and walls. All the rooms are lit and ventilated in different ways. The windows which are small, open on to interior lightwells, shady or covered st ...
Towards improved performances of mechanical ventilation systems
... more in terms of solutions. In the descriptive approach for indoor air quality control, one avoids to a large extent the need to specify the boundary conditions and the ‘real objectives’ to be achieved. By assuming certain default values, it is then often possible to come to requirements, which are ...
... more in terms of solutions. In the descriptive approach for indoor air quality control, one avoids to a large extent the need to specify the boundary conditions and the ‘real objectives’ to be achieved. By assuming certain default values, it is then often possible to come to requirements, which are ...
Thermal loss of building envelope
... Thermal loss of the building (Specific) Thermal loss of ventilation (Formula 3) •Each air handling unit is calculated separately if necessary. •Ventilation is calculated with standardized air flow rates and operating times in both cases (reference and design) •Reference value of annual energy effici ...
... Thermal loss of the building (Specific) Thermal loss of ventilation (Formula 3) •Each air handling unit is calculated separately if necessary. •Ventilation is calculated with standardized air flow rates and operating times in both cases (reference and design) •Reference value of annual energy effici ...
Downloaded - Judson University
... the Leadership in Energy and Environmental Design (LEED) certification system (Green Building Council, 2001) supports the benefits of, and should stimulate interest in, NV buildings: they can reduce the energy cost compared with a ‘pre-requisite standard’, lead to improved ventilation effectiveness ...
... the Leadership in Energy and Environmental Design (LEED) certification system (Green Building Council, 2001) supports the benefits of, and should stimulate interest in, NV buildings: they can reduce the energy cost compared with a ‘pre-requisite standard’, lead to improved ventilation effectiveness ...
Building Services Systems: Heating And Air
... To decide on the appropriate heating and air conditioning systems for educational buildings, a range of inputs needs to be considered. First of all, the need of understanding the functions of the school has to be analysed. Some organisations might differ in their educational methods and have night c ...
... To decide on the appropriate heating and air conditioning systems for educational buildings, a range of inputs needs to be considered. First of all, the need of understanding the functions of the school has to be analysed. Some organisations might differ in their educational methods and have night c ...
Thermal Applications Category User Guide
... The input data requirements of the thermal applications are summarised below. The data is managed by utility programs invoked from the Application Views. Where possible, applications access common data so that it is never necessary to re-enter values in order to carry out different types of analysis ...
... The input data requirements of the thermal applications are summarised below. The data is managed by utility programs invoked from the Application Views. Where possible, applications access common data so that it is never necessary to re-enter values in order to carry out different types of analysis ...
Natural Ventilation Engineering Guide
... Introduction to Natural Ventilation Improved Indoor Environmental Quality Occupants often desire the ability to control their local environment in a building by being able to open windows. This feature is often not provided – in many cases for good reasons – in mechanically ventilated buildings. It ...
... Introduction to Natural Ventilation Improved Indoor Environmental Quality Occupants often desire the ability to control their local environment in a building by being able to open windows. This feature is often not provided – in many cases for good reasons – in mechanically ventilated buildings. It ...
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 ...
Selff sustaining greenhouse
... • This system increasing food security. • Also, the 170,000 square feet of greenhouses that Gotham Greens has produce yields equivalent to over 100 acres of conventional field farming. Therefore, this method yields 20-30 times more product per acre than field production while eliminating any use of ...
... • This system increasing food security. • Also, the 170,000 square feet of greenhouses that Gotham Greens has produce yields equivalent to over 100 acres of conventional field farming. Therefore, this method yields 20-30 times more product per acre than field production while eliminating any use of ...
Healthy environments from a broad perspective – an overview of
... present, the performance of the building envelope and the indoor activities. This should match the performance requirements set for thermal comfort, health and productivity. Despite an optimization of the building design (for instance, orientation, lay-out, construction) generally building services ...
... present, the performance of the building envelope and the indoor activities. This should match the performance requirements set for thermal comfort, health and productivity. Despite an optimization of the building design (for instance, orientation, lay-out, construction) generally building services ...
Ventilation (architecture)
Ventilating (the V in HVAC) is the process of ""processing"" or replacing air in any space to provide high indoor air quality (i.e. to control temperature, replenish oxygen, or remove moisture, odors, smoke, heat, dust, airborne bacteria and carbon dioxide). Ventilation is used to remove unpleasant smells and excessive moisture, introduce outside air, to keep interior building air circulating, and to prevent stagnation of the interior air.Ventilation includes both the exchange of an air to the outside as well as circulation of air within the building. It is one of the most important factors for maintaining acceptable indoor air quality in buildings. Methods for ventilating a building may be divided into mechanical/forced and natural types.""Mechanical"" or ""forced"" ventilation is used to control indoor air quality. Excess humidity, odors, and contaminants can often be controlled via dilution or replacement with outside air. However, in humid climates much energy is required to remove excess moisture from ventilation air.Ventilation increases the energy needed for heating or cooling, however heat recovery ventilation can be used to mitigate the energy consumption. This involves heat exchange between incoming and outgoing air. Energy recovery ventilation additionally includes exchange of humidity.Kitchens and bathrooms typically have mechanical exhaust to control odors and sometimes humidity. Kitchens have additional problems to deal with such as smoke and grease (see kitchen ventilation). Factors in the design of such systems include the flow rate (which is a function of the fan speed and exhaust vent size) and noise level. If ducting for the fans traverse unheated space (e.g., an attic), the ducting should be insulated as well to prevent condensation on the ducting. Direct drive fans are available for many applications, and can reduce maintenance needs.Ceiling fans and table/floor fans circulate air within a room for the purpose of reducing the perceived temperature because of evaporation of perspiration on the skin of the occupants. Because hot air rises, ceiling fans may be used to keep a room warmer in the winter by circulating the warm stratified air from the ceiling to the floor. Ceiling fans do not provide ventilation as defined as the introduction of outside air.Natural ventilation is the ventilation of a building with outside air without the use of a fan or other mechanical system. It can be achieved with openable windows or trickle vents when the spaces to ventilate are small and the architecture permits. In more complex systems warm air in the building can be allowed to rise and flow out upper openings to the outside (stack effect) thus forcing cool outside air to be drawn into the building naturally through openings in the lower areas. These systems use very little energy but care must be taken to ensure the occupants' comfort. In warm or humid months, in many climates, maintaining thermal comfort solely via natural ventilation may not be possible so conventional air conditioning systems are used as backups. Air-side economizers perform the same function as natural ventilation, but use mechanical systems' fans, ducts, dampers, and control systems to introduce and distribute cool outdoor air when appropriate.