Thermal energy storage systems

Thermal Energy Storage Systems—These are intermittent use systems where the cold is produced off-peak and then used to chill the inlet air during the hot hours of the day. 

C448.3-02 Design and Installation of Underground Thermal Energy Storage Systems for Commercial and Institutional Buildings [14]... 

Environmental Checklist for Earth Energy Heat Pumps and Underground Thermal Energy Storage (UTES) Systems... 

ENERGETIC, EXERGETIC, ENVIRONMENTAL AND SUSTAINABILITY ASPECTS OF THERMAL ENERGY STORAGE SYSTEMS... 

Dincer, I., and M.A. Rosen, 2002. Thermal Energy Storage Systems and Applications, John Wiley Sons, London, 580 pp. 

Dincer, I., and S. Dost, 1996. A perspective on thermal energy storage systems for solar energy applications, Int. J. Energy Res., 20, 547-557. 

Krane, R.J., 1989. Second-law optimization of thermal energy storage systems Fundamentals and sensible heat systems, in Energy Storage Systems, edited by B. Kilkis and S. Kakac, Kluwer Academic Publishers, pp. 37-67. 

Rosen, M.A., 1992. Appropriate thermodynamic performance measures for closed systems for thermal energy storage, ASME J. Solar Energy Eng., 114, 100-105. 

Adebiyi, G.A., and Russell, L.D., 1987, A second law analysis of phase change thermal energy storage systems, ASME HTD 80 9—20. 

Domanski, R., and Fellah, G., 1998, Thermoeconomic analysis of sensible heat, thermal energy storage systems, Applied Thermal Eng. 18 693—704. 

In ATES (Aquifer Thermal Energy Storage) systems groundwater is used to carry the thermal energy into and out of an aquifer. For the connection to the aquifer water wells are used. However, these wells are normally designed with double functions, both as production and infiltration wells, see Figure 29. 

In this study we have described the innovative borehole thermal energy storage system at UOIT and presented a brief performance analysis focusing on coefficient of performance. An illustration is presented. Further research is anticipated to improve the overall BTES system at UOIT, and to produce generalized recommendations for the design of similar systems. 

Abstract. Newly established residential area in Vastra Hamnen (West Harbour) in the city of Malmo uses Aquifer Thermal Energy Storage (ATES) as part of the district heating and cooling system. ATES system has 5 warm and 5 cold wells that are 70-80 m deep. Cold from the nearby sea (Oresund) and water cold from heat pump is stored from winter to summer. The purpose of the system is to deliver free cooling to district cooling system at a temperature level below +6-8 °C. Operational experiences and economic aspects are discussed. 

Kohiyama, M., 1997. Economic Estimation of All-Air Type Snow Air-Conditioning System, Proceedings of Megastock, The 7th International Conference on Thermal Energy Storage. Conference in Sapporo, Hokkaido, Japan (pp. 611-616). 

Chemical heat pump uses chemical reaction for thermal energy storage and conversion. The heat pump operation is based on reaction equilibrium relationship, and has two operation modes. Figure 221 shows equilibrium relationship of chemical heat pump cycle for Mg0/H20 system at (a) heat amplification and cooling mode and (b) heat transformation mode [26], Figure 222 shows... 

In these systems the converter is producing waste heat, which has to be released to the ambient connected to an entropy flow caused by the irreversibilities within the converter. The discharging process will be a heat pump process, where the entropy has to be taken from the ambient. Therefore it is obvious that these systems have to be coupled to the ambient conditions. Such a storage is not self-sufficient. These systems are called indirect thermal energy storages. 

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