write the answer on computer not on paper
THERMAL ENERGY STORAGE SYSTEM
Thermal energy storage (TES) is a technology that stocks thermal energy by heating or cooling a storage medium so that the stored energy can be used at a later time for heating and cooling applications and power generation. TES systems are used particularly in buildings and in industrial processes.
ADVANTAGES OF THERMAL ENERGY STORAGE
Energy storage may be a trending issue over the last several months, but thermal energy storage is not new; it has been around and in use over the last two or so decades. It has been applied in hundreds of commercial installation with most of these are used in the form of cooling storage for air-conditioning rooms. The storage systems are chiller-based; they run on refrigeration equipment that produces chilled water or ice during the night that can be used for cooling buildings or rooms during the day. The system’s strategies reduce the need for running chiller machines at full capacity during the day thus conserving energy which is the primary goal of the implementation of thermal energy storage. Other notable advantages linked to the use of this technology have significantly influenced the need to incorporate it into HVAC systems.
1.) Cutting Costs
Off-peak electricity is currently the “holy grail” in the commercial energy market. The average night-time cost of electricity use is around 45 cents/kWh; however, the local utility variables may have some significant influence on the costs. As such, the use of daytime power with is on the on-peak use is around 24 times costlier than that of the off-peak period. The extra costs may not by reflected in the utility bill but the overall electricity use package for the peak periods will be well worth the value. The demand charges may be inflamed throughout the year since chillers tend to demand one-third or more of the electric power during the peak periods. The use of thermal storage can reduce if not eliminate the high demand and still ensure transparency of a buildings power usage at a given period.
2.)Green Building Certification
According to extensive studies on green energy, building accorded the green energy certifications tend to enjoy many value enhancements. The benefits of this are numerous and include higher occupancy, greater resale value, improved worker productivity, and reducing costs of operation. The thermal storage technology easily bags 2 -4 credits in the LEED Energy and Atmosphere category. Well, that gain more recognition in areas where thermal storage offers a higher demand for capability.
3.) Grid Benefits
The introduction of thermal storage had directly addressed the issue of stressing load on utility grids caused by air conditioning. The 60’s and 70’s the load amount on the utility grid was around 70%, which is based on the division of the average load by the peak load. That figure has dropped to 50%. Today, half of what the utility grid generates remain idle or as a reserve for a better part of the year. It often is in higher use when there are episodes of high air conditioning demands, and this is often from renewable sources of energy such as wind and solar which are nevertheless erratic. In as much as these efforts are notable, failure to fully utilize the generating infrastructure is an avoidable economic burden that only continues to spread throughout the utility grids.
Other operational benefits of thermal energy storage include:
Thankyou
List at least 3 advantages of thermal energy storage ? write the answer on computer not...
Class activity 3 1- List at least 3 advantages of thermal energy storage 2- List at least 3 disadvantages of thermal energy storage 2. Explain clearly the principle of operation of the solar hot water system shown below
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A thermal energy storage unit consists of a large rectangular channel, which is well insulated on its outer surface and encloses alternating layers of the storage material and the flow passage. Each layer of the storage material is an aluminum slab of width W = 0.05 m, which is at an initial temperature of 25°C. Consider conditions for which the storage unit is charged by passing a hot gas through the passages, with the gas temperature and the convection coefficient...
2. A thermal energy storage unit is composed of rectangular channels and is well insulated from outer surface. It encloses alternating layers and flow passages (shown using the arrows in the image below). Each layer of the storage material is an aluminum slab of width (thickness) W=0.05 m, which is at initial temperature of 25 °C. The storage unit is charged by passing a hot gas through the passages, with the gas temperature and convection coefficient assumed to have constant...