Daylight Harvesting: The doorway to a sustainable future

Introduction

Daylight harvesting or daylight response is an automatic lighting control strategy that adapts electric room lighting to natural light target levels, thereby reducing energy costs. It is most effective in places where there is always a lot of natural light, such as offices, and workspaces, also lighting next to the window or near the skylight.

What is Daylight Harvesting?

Daylight harvesting is one of the most sophisticated techniques used in sustainable lighting design for modern day buildings. It automatically dims or adjusts the brightness of the light based on the amount of natural light available in a certain room. By using natural light coming in through windows and skylights, the energy consumption of artificial lighting is minimized.

What is the use of Daylight Harvesting?

The use of daylight is a way to design a new green building to collect and use natural light in the building, if available, to reduce the need for energy-consuming artificial lighting. Of course, all buildings have windows nearby to let in natural light, but green buildings are designed to maximize that light and effectively disperse it deep inside the building.

Older buildings have an electric lighting system that is on day and night when the building is occupied. However, buildings that use daylight have an automatic lighting control system that measures the amount of natural light in each room and adjusts the electrical lighting accordingly to provide exactly what is needed for the right level of lighting. I have. The need for electric lighting depends on the time of day (day and night), the position of the sun, and the weather.

How does Daylight Harvesting work?

Daylight Harvesting systems use light sensors, also known as photocell sensors, to detect common light levels in the environment. It then sends the received light intensity to the controller connected to the lighting control system. The control system automatically adjusts the electrical lighting according to the measured light intensity.

How does Daylight Harvesting work?

There are two kinds of Daylight Harvesting systems:

Open-loop daylight harvesting

In an open-loop control system, the light sensor only measures the intensity of natural light, so it adjusts the intensity level of artificial light to maintain, compensate, or balance the contribution of natural light throughout the day.

Open-loop sensors are usually installed outside the building, near windows, or towards a source of sunlight. This is known as an open loop because there is no feedback from the electric lighting.

Closed-loop daylight harvesting

In a closed control loop, the light sensor records the entire light intensity from both the natural light source and the power source in that area. It also adjusts the intensity of artificial light based on the detected light intensity to maintain the preset ambient light intensity.

The closed-loop sensor is typically installed indoors and faces the opposite side of the sunlight source.

Why should you choose Daylight Harvesting?

Saves energy

It enhances the energy saving by dimming or turning off the lighting based on the natural light entering the room. elitedali’s dynamic daylight harvesting systems are designed in such a way that it can optimise and save energy upto 60-70% depending upon the various control strategies.

Comfortable and Convenient

Adjusting the lighting continuously and automatically helps maintain the proper level of light in the room. elitedali’s dynamic daylight harvesting system comes with an effortless controlling software that you can connect with your PC or mobile thereby bestowing you with the necessary versatility.

Creates a healthy environment

Providing the right amount of light to employees helps maintain the proper biological rhythm, which is essential for good health and good sleep, and prevents seasonal mood disorders. Natural sunlight at work enhances concentration, creates a positive mood, and promotes a healthier employee life.

What are some advantages of Daylight Harvesting?

The comprehensive goal of using sunlight is to minimize the amount of artificial light and reduce electricity costs as well as HVAC costs. Electric lighting produces a lot of heat, but natural light produces very little heat when properly controlled.

In most buildings exposed to sunlight, the total energy savings are 15-40 percent. Energy savings and sustainability can be a reason for organizations to choose sunlight first, but they can also impact the productivity and satisfaction of employees, students, and even customers and retail customers.

Many people have a natural charm and need to work in natural sunlight. Studies show that sunlight has a direct impact on well-being, productivity, and overall satisfaction of a human being. Even retailers like Walmart are aware of the environmental and financial benefits of sunlight for both employees and consumers.

A certain experiment found that in stores with skylights in certain departments, the departments exposed to natural light had higher total sales per square foot.

Where should Daylight Harvesting sensors be placed?

Some basic guidelines for placing Daylight Harvesting sensors are:

The lights should be placed in such a way that its arrow points towards the nearest window one or two times above the window height.
It must be ensured that the light sensors are not obstructed by ceiling fans or other lights.
In open plan offices, assign sensors at least every 9m from the window wall
Do not place the sensor in direct sunlight from room lighting fixtures. As a result, the sensor readings may be incorrect and the system may not receive proper sunlight.

Bottom Line

With elitedali’s Dynamic Daylight Harvesting organisations can enhance client convenience and comfort whilst saving electricity intake costs. In the Dynamic Daylight Harvesting systems, the maximum green daylight hours harvesting structures are automated, and are designed to screen the extent of ambient or to be mild in an surroundings at any given time.

elitedali provides top-notch and long lasting Daylight Harvesting systems that can help maintain the perfect lighting around your workspace. It offers its customers pocket friendly and long lasting lights so buy them as soon as possible!