This LEED Platinum home plot exhibits a large variety of sustainable features, including this 30-panel solar installation atop the barn roof. The setup involves a 6.9 kW system, which serves to power roughly 1/3 of the plot’s operations (covering three buildings and a pond).
In addition, with the aid of supportive credits, the cost of the system was able to be reduced a great deal, to half of the overall total.
Small lineup of vertical axis (VAWT) windmills along the beachfront.
The Philadelphia Eagles football stadium has embraced a number of sustainability practices in its overall operations, along with gaining a LEED Gold Certification from the US Green Building Council.
As part of this, the stadium utilizes solar panel installations on several areas of its structure and throughout the north public parking area, which is lined with solar canopies. There are reportedly 11,108 solar panels used. Fourteen wind turbines also line the top of the stadium.
These technologies provide approximately 1/3 of the stadium’s energy, creating 4 MW per year. More can be read on Lincoln Financial Field’s energy practices and usage here:
We use a set of thermosiphons to heat water for the camp. The water supply travels through the system, being heated by the energy transferred from the sun to a solar collector. Even in cold areas, solar energy may be harnessed and utilized toward a variety of applications, such as this one.
Our local park has solar panels that are used to power the trail lighting. There are about 40 individual installations, and we believe the lamps act on a light sensor that operates using standard dusk till dawn settings.
All of the waste produced in Minnesota’s Olmsted County that is not able to be reduced, reused, recycled, or composted is taken to the Olmsted Waste-to-Energy Facility. This operation is one of many within the County’s waste management network, and reduces the volume of general waste produced by the area by 90%. Neighboring facilities within the network serve to reduce this amount even further, and include a municipal recycling center, hazardous waste facility, and compost site.
Through the waste-to-energy process, both electricity and steam are created and directed to local buildings within the County’s ‘District Energy System’, including to local medical centers, the Rochester Public Library, and the Mayo Civic & Art Center.
As reported by the County, mixed garbage is sent to a combustion chamber within the facility, and after being fully processed, exits at 10% of its original volume, in the form of ash. Emissions from the process are heavily monitored and filtered in accordance with state and federal air emission standards. The final produced ash is then sent to a local landfill and ‘permanently stored in an environmentally protective holding cell’.
More information on the Olmsted County Facility and Waste Management Network:
These solar flowers were co-designed by students from UT Martin’s Engineering and Visual Arts departments.
I created a simple circuit to capture and utilize the energy generated by a single solar cell, in order to charge my phone.
Our restaurant has an extremely well integrated and efficient mechanical and electrical system design, allowing us to better control and minimize high peaks of electricity consumption. These are the control panels of different pumps, circuits, and hoods. In the foreground, the variable-frequency controllers and drivers of the restaurant’s air supply unit are used to modulate the fans for supplying fresh air, and the air for exhaust. This also maintains a comfortable ambient pressure, even if the door opens quickly or a kitchen hood starts.
Unique in Quebec’s catering industry, the air extracted from the building passes through a heat exchanger in order to preheat the fresh air, greatly reducing the heating requirements of the building. Each of the four hoods in our facility easily draws more than 1,000 cubic feet per minute (CFM) outside the building.
Since all of this air must be replaced by fresh air from the outside, a lot of heat is created, especially when the weather brings extremely low temperatures. Our heat recuperator therefore avoids one of the main energy expenditures of restaurants.
I passed a site of small wind and solar installations on the campus of a branch of our community college. The wind turbines are vertical axis (VAWT).
Earth Energy USA has a patented pipe that makes geothermal heating, cooling, and hot water affordable. Our pipe is a flexible 4.5″-wide round bundle, utilizing a 2″-wide round plastic HDPE center pipe as the core pipe of the system. This pipe has small 1/2″ holes evenly drilled throughout its length, which allow for a cement grout to seep through and fill any voids in a system borehole wall. This creates a solid, filled borehole. Around the center pipe are eight smaller plastic pipes wrapped in a spiral fashion to allow for maximum surface heat transfer to your water. Four of the pipes carry the closed water loop down the borehole to a U-turn fitting at the bottom, while the remaining four pipes bring the water loop back up, completing the system.
With this design, whereas other geothermal companies use three to four boreholes, Earth Energy USA only requires two. This makes for significant savings and also allows us to install geothermal systems in more urban areas. The boreholes we drill bring up the natural temperature of the earth, which is a constant 55 degrees Fahrenheit regardless of the season, to heat and cool your home or facility.
This type of system can be utilized in new and existing construction, toward both residential and commercial building applications. As described above, the piping provides for a closed-loop system that is leak-free and non-polluting, while additionally allowing the cost of clean geothermal energy to become more comparable to that of gas or oil.
Our lodge has constructed an advanced hybrid energy system, using the combined power of solar and wind sources with an assortment of battery banks and a three-phase inverter system. In total, our solar park contains 180 PV modules, and the system altogether may be monitored remotely.
With this, we have also been able to provide additional modules to a local school, and stimulate the community in a number of other sustainable and innovative ways. To date, our system has allowed for 280 MWh of clean electricity, and provides power to the entire lodge, our dive center’s air compressor, and to our water treatment plant.
To date, the university’s campus features 80 dual recycling receptacles and solar-powered trash compactors. While the compactor takes little space more than an ordinary receptacle, it may hold 5 times the capacity of waste, due to the self-powered compressing process.
This also saves on the amount of labor required to keep up with accumulated trash. BigBelly Solar, the product manufacturer, notes that this can reduce trash collections by up to 80%.
In the foregound, we have a buffer tank for our geothermal circuit. Pumps circulate glycol in the mitigated circuit between the heat pumps. In the background, two water heaters are used to power the restaurant. Just like the rest of the building mechanics, everything is controlled by the building-management computer system. The central computer cycles the start-up of various equipment and uses load shedding to reduce the electricity demand peaks as much as possible.
The next image displays an overview of the complexity of the piping. The cabinets at the bottom are water-to-water heat pumps which allow the surplus heat to be sent to the geothermal wells during the air conditioning period, and to draw heat to the restaurant in very cold weather.
The solar panel installation at our hotel can be seen at the center right of the image, and utilizes the sunlight as a source of energy to heat running water. The temperature of the working fluid can rise up to 80°C. Thanks to our Pontos, cooling, and boiler systems, the running water is then cooled to 55°C by the end of the whole process.
In the summer season, there is no need to activate the Pontos or boiler systems, as the solar panels absorb enough sun energy (up to 240 kW) to warm up the running water.
More information on the Mosaic House Pontos system may be read in another post:
Hotel Grey Water System with Heat Recuperation