Packed Bed Thermal Storage Models for Solar Air Heating and Cooling Systems

1976 ◽  
Vol 98 (2) ◽  
pp. 336-338 ◽  
Author(s):  
P. J. Hughes ◽  
S. A. Klein ◽  
D. J. Close
Keyword(s):  
Thermal Storage ◽  
Packed Bed ◽  
Cooling Systems ◽  
Heating And Cooling ◽  
Air Heating

scholarly journals Comparative Analysis for Renovation of an air Heating and Cooling System from a Romanian Administrative Building

2019 ◽  
Vol 111 ◽  
pp. 04022
Author(s):  
Calotă Răzvan ◽  
Titi Robert ◽  
Nichita Madalina ◽  
Ilie Anica ◽  
Girip Alina
Keyword(s):  
Comparative Analysis ◽  
Solid Fuel ◽  
Air Conditioning ◽  
Cooling System ◽  
Vapor Compression ◽  
Three Solutions ◽  
Fuel Wood ◽  
Cooling Systems ◽  
Heating And Cooling ◽  
Air Heating

In this paper, the authors determine the energy consumption for heating and air conditioning of an administrative building located in the second climatic area, in Romania. The heating and cooling system is provided with fan coils, and the fresh air is supplied by an AHU. The aim is to identify the best solution from 3 proposed heating and cooling systems that can be applied in order to improve the living conditions, namely: boiler with solid fuel (wood) or gas and chiller with mechanical vapor compression (VCM); reversible heat pump; boiler with solid fuel (wood) or gas and absorption chiller type LiBr-H2O driven by solar energy. The goal of the study is to select one of the three solutions which involves minimum investment and exploitation costs.

scholarly journals 5th generation district heating and cooling systems as a solution for renewable urban thermal energy supply

2019 ◽  
Vol 49 ◽  
pp. 129-136 ◽  
Author(s):  
Stef Boesten ◽  
Wilfried Ivens ◽  
Stefan C. Dekker ◽  
Herman Eijdems
Keyword(s):  
Large Scale ◽  
Fossil Fuel ◽  
Supply And Demand ◽  
District Heating ◽  
Thermal Storage ◽  
Energy System ◽  
Heat Pumps ◽  
Urban Environments ◽  
Cooling Systems ◽  
Heating And Cooling

Abstract. In order to reduce greenhouse gas emissions and decrease dependency on depleting fossil fuel resources the shift to a renewable energy system is necessary. District heating and cooling systems are a viable solution to provide heat and cold in urban environments. Renewable heat and cold sources that may get incorporated in future urban energy systems will not provide the same high temperature output as current fossil fuel fired systems. Fifth generation district heating and cooling (5GDHC) systems are decentralized, bi-directional, close to ground temperature networks that use direct exchange of warm and cold return flows and thermal storage to balance thermal demand as much as possible. 5GDHC offers a way to incorporate low temperature renewable heat sources including shallow geothermal energy, as well as reduce total demand by recuperating generated heat from cooling and generated cold from heating. The large scale of 5GDHC allows for optimal design of technical parts like heat pumps and thermal storage vessels, while increasing overall system efficiency by incorporating a large variety of supply and demand profiles. We provide a definition for 5GDHC and show how this concept differs from conventional district heating systems. The Mijnwater system in Heerlen, the Netherlands is showing what a city-level 5GDHC system can look like.

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