module (0) balancing human comfort & energy management-apex.by getco
TRANSCRIPT
Module (0)
Presented by: Eng. Juma Yousef Juma
Balancing Human Comfort & Energy Management
و الناس راحة بين التوازن لتحقيق الضمانالطاقة إدارة
Buildings are designed for people, and those people are trying to accomplish a task – whether it’s raising a family, running an office, or manufacturing a product.
The building needs to keep people comfortable, efficient, healthy, and safe as they set about their task.
Balancing Human Comfort & Energy Management
الطاقة إدارة و الناس راحة بين التوازن لتحقيق الضمان
Green design seeks to create efficient buildings that keep people comfortable while minimizing negative environmental impacts.
الراحة منطقةالحرارية
Thermal Comfort
Maintaining a person’s thermal comfort means ensuring that they don’t’ feel too hot or too cold. This means keeping the temperature, humidity, airflow and radiant sources within acceptable range.
األهمية؟ وجه ماWhy it’s
important?المقاييسMetrics
To keep people comfortable you need to provide the right mixture of temperature, humidity, air speed (and covering area), also cleanness of air. The right level of these variables depends on what activity is occurring, how active the people are, and what they are wearing. Everyone has slightly different criteria for comfort, so comfort is often measured by the percentage of occupants who report they’re satisfied with the conditions.
إستراتيجية التصميمDesign
StrategiesCreating comfortable conditions is one of the biggest uses of energy in buildings and it is also critical to the happiness & productivity of its users. Often factors such as airflow & radiant temp. are overlooked in a design, leading to higher energy use and occupancy dissatisfaction.
Some ways to keep people comfortable are to use the HVAC equipment like chillers, DX, PKG, and heat exchangers can temper the air temperature and humidity, but surface temperatures and moving air have to be considered too by utilizing AHU & FCU, and keeping surrounding surfaces the correct temperature with good insulation.
Comfort Zone الراحة منطقة
الراحة – Comfort Metricsمقاييس
البصرية الراحة منطقة Visual Comfort
Maintaining visual comfort means ensuring that people have enough light for their activities, the light has the right quality and balance, and people have good views.
األهمية؟ وجه ماWhy it’s
important?ZالمقاييسMetrics
Good lighting is well-distributed, is not too dim or too strong, and uses minimal energy. Good visual comfort generally means that as much of this light is natural light as possible. Humans are hard-wired to like the sun’s light and it saves energy.
التصميم إستراتيجيةDesign Strategies
Good lighting helps create a happy and productive environment. Natural light does this much better than electric lighting. Having good views and sight-lines gives people a sense of control of their environment and provides a sense of well-being.
Day-lighting design strategies like high or clerestory windows, light shelves, and well-placed skylights can help distribute sunlight inside a space. When you do need to use artificial lights, you can reduce energy use by using efficient fluorescents or LEDs, with day-lighting dimming controls, effective fixtures, and good lighting design. Good controls can automatically balance natural and artificial lighting. Most lights should have occupancy sensors.
Natural Light– اإلضاءةالطبيعية
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خيارتمتعددةMore
Options
الداخلي الهواء جودةAir Quality
In addition to air that’s the right temperature and humidity for thermal comfort, it’s important that air is clean, fresh, and circulated effectively in the space.
وجه مااألهمية؟Why it’s
important?
المقاييسMetrics
Fresh air requires a certain percentage of outside air circulating into spaces. Clean air requires pollutant and pathogen levels to be below certain thresholds.
إستراتيجية التصميمDesign
StrategiesIf air is too stale or is polluted, it can make people uncomfortable, unproductive, unhappy, and sick. Fresh air helps people be alert, productive, healthy, and happy.
Air can be kept fresh with high ventilation rates, either using natural ventilation such as operable windows, or active systems such as HVAC fans and ducts. Clean air can be achieved by filtering air, by flushing spaces with fresh outside air, and by not contaminating the air with impurities from the building, such as volatile organic compounds from paints or materials.
الصوتية الراحة منطقةAcoustic Comfort
Acoustic comfort means having the right level and quality of noise to use the space as intended.
وجه مااألهمية؟Why it’s
important?
المقاييسMetrics
How humans perceive sounds and loudness is a subjective measure. However, you can create a comfortable environment by controlling objective measures like decibel level (sound pressure), reverberation time, and the sound reflection and damping properties of materials.
إستراتيجية التصميم
Design StrategiesPeople are more productive & happy when they’re not distracted by noises from outside or from surrounding spaces and occupants. Acoustic comfort is especially important for schools& office BLD.
Creating barriers and sound breaks between sources of noise is important. You can optimize room shape & size to reduce echoes & reverberation. And you can use acoustic tiles on ceilings & walls to dampen sound.
الصوت عازل تركيب قبلBefore Acoustic Insulation
عازل تركيب بعدالصوت
After Acoustic Insulation
PreventCondensing
Heating
Fresh AirFiltration
Relative Humidity
Cooling
Air Distribution
التكييف وظائفA/C Functions
Noise
:Conclusion:الخالصZZZZZZZة
إذن:يعني التكييف أن نستنتج
بين التوازن إحداثالمختلفة الراحة أنواع
So: We conclude that
Air Conditioning is the balance of all theses types of types of comfort
