Integrated design of building and microgrid. Optimise mix of electrical and thermal storage to suit the ability of the building to shift its electrical load. Optimise building envelope to allow flexible electrical loads, and shifting of electrical loads See - cibsejournal.com/technical/the-balance-of-power-modelling-a-microgrid-in-durban-south-africa/ PV on the roof, batteries in the basement, and EVs in the parking. ...more »
Buildings As A Resource - Trane Call for Innovation
Seeking Novel Applications of Thermal Storage for Better Building Design & Performance
The building industry strives to produce cost-effective and eco-friendly technologies that improve the performance of buildings, while also considering occupant comfort. It is crucial that innovative techniques and materials be developed that efficiently condition occupied spaces, contribute to improved occupant comfort, and have low product and installation costs. Such energy, comfort and cost considerations will best enable contractors and builders to provide customers with high-performing, sustainable buildings.
Thermal storage has multiple benefits which include: 1) 10X lifetime when compared to traditional batteries, 2) Adding a “partial ice” system to a building can be done at a lower installed cost than a traditional air-cooled chiller system, and 3) Many current thermal storage tanks are 99% recyclable and do not involve remediation of hazardous materials at the end of their lifecycle. Even though energy storage costs are trending down and thermal storage systems in general are approximately 1/4 the cost of electric battery systems, thermal storage has not gained global adoption at the scale which would support the greatest benefit to the power grid and cost advantages to consumers. Most current iterations of thermal storage systems involve large modular insulated tanks which connect to the building chiller systems to produce chilled water or ice inside the tanks.
To meet peak power demand, many utilities apply additional “demand” charges for commercial building customers to recover the associated capital costs. Energy storage can reduce these demand charges by storing energy during off-peak periods and then discharging to reduce the magnitude of peak building demand. Because a significant portion of commercial building peak demand is driven by air conditioning, thermal storage can be used in lieu of battery storage to reduce demand charges. In thermal storage, equipment is used to make chilled water at times when electricity demand is low; later this equipment can cool the building with the chilled water or ice during peak demand hours without any loss of climate control or occupant comfort. Although very efficient, thermal storage usually requires a significant footprint (see Figures 1 & 2 below) hence limiting technology adoption.
The challenge is to develop a new way to heat and cool commercial buildings using thermal storage. Specifically, can we conceptualize ways in which thermal storage can more elegantly complement the design of a structure or facility, thereby promoting greater implementation of the technology. Innovators are encouraged to explore ideas of incorporating the elements of chilled water or ice into a structure that is simple, elegant, and complements other building components and purposes to assist in making the overall building system more efficient and less dependent on the electric grid. Examples of innovative ideas could include storing chilled water or ice within various building components, exploring new ways to use chilled water or ice as a thermal battery for the building, and new ideas around using stored water to provide energy to a system of smaller structures. The solution should comply with the following design criteria:
- Focus on new construction or deep retrofit for commercial applications;
- Cost effective materials and designs meeting a simple payback calculation of under 5 years; and
- System design provides maximum value to both the grid and the system owner by minimizing billed kWh/kW, thereby saving the owner money on monthly electric bills, while enabling the provision of demand response and other grid services.
This JUMP Call for Innovation requires only a written proposal, but inclusion of additional illustrations is encouraged. Review and consideration of ideas does not require submitters to provide ideas with documented Intellectual Property (IP).
Cash award of $5,000 will be sponsored by Trane for the top selected technology submission. The idea submitter will also be invited to discuss future collaboration with Trane and ORNL technical experts. Depending on the needs identified ORNL may provide in-kind technical support of up to $20,000 to enable ORNL staff to provide prototype development, testing, 3rd party validation, or other defined support.
Additionally, Successful JUMP participants looking for funding and incubation support may be invited to participate in the Clean Tech Open Accelerator Program based on technical and market merit.
Idea Submission Deadline
Idea Submission Period Ends: Sunday September 10th, 2017 at 11:59 PM EST
Figure 1. A Thermal Storage Tank at the VA Medical Center in Dallas, TX.
Figure 2. Ice Thermal Storage tanks at the University of Arizona
Lightweight Structures, LLC (LWS) has developed an innovative framing system for building construction brand named “Forteco” Lightweight Composite Framing. The Forteco wall and floor framing system provides an exceptional building envelope utilizing light gauge steel, concrete and insulation in a clever composite fashion that costs less, installs faster and has superior energy efficiency than traditional commercial and ...more »
Commercial, institutional and public buildings suffer from large, sometimes significantly unbalanced, or cooling-dominant loads. Maximum loading typically occurs at or near the hottest part of the day when the heat rejectors are at their least efficient (smallest temperature difference) and electric demand is at it highest (and possibly most expensive). Predictive control software has the ability to utilize ground coupled ...more »
Thermal energy storage/exchange as integral part of building skeleton - hollow framing members functioning as connected, tune-able energy storage/buffering system modeled on biological circulatory responses to temperature changes. Systems functions respond to ambient temperature changes/requirements via in-line: pumps, counter-current multipliers and reservoirs. Systems configured for max heat dissipation in warmer latitudes ...more »
Roof paint which darkens as temperature falls (absorbing increasing amounts of infra-red radiation) and lightens as temperature rises (reflecting radiation). Paint should be capable of cycling in this way for 3-5 years.
QCoefficient's Foresight EMeister is the CPU that automates large commercial building operation in emerging grid operations & markets and against the simplest to the most sophisticated electric rates … for dramatic reductions in energy use, expense, and emissions. At the core, EMeister is a SaaS platform that combines breakthroughs in building energy modeling and model predictive control to harness the drywall and concrete ...more »
1) Sprinklers/hydrants tanks for cold water storage. Using sprinkler/hydrant tank for cold water storage at 2 0C or below zero using salin solution. Depending on the building energy needs, the storage temperature can be set. For new building, fire fighting tanks can be oversized to storage all necesary energy, without having storage temperature below zero. For example a 500 m3 tank at 10 0C temperature difference (+20C...+12 ...more »
The system requires the use of modular ice storage reservoirs that can adjust their footprint according to each location and available space (see atach file)
This solution is reliable when deploying an energy storage system in an existing cooling plant. Using storage system, the chiller load will be 50-60%. This permit to use one chiller to cool the second chiller condenser, the system operating as a two-stage refrigeration equipment. The major advantages are the ability to achieve much lower vaporization temperatures and to use an ice maching machine or snow gun to produce ...more »
With both renewable power and natural gas prices at near historic lows, disruptive building design technologies can encompass both improved energy efficiency and improved indoor air quality with the same upgrade. In many parts of the USA and the global market, the need to mitigate fine particulates smaller than 2.5 microns (PM2.5) is needed now more than ever. This is due to rising public health costs, lost worker productivity ...more »
Cold thermal energy storage can be implemented in a variety of ways. When using water as a storage media, large footprints are typically required to store the quantities of water needed for high storage capacities. One way to increase adoption of water based thermal storage technology would be to increase the utility of the space required for thermal energy storage. Using the energy provided to the HVAC system to solely ...more »