Showing papers by "Gorm Bruun Andresen published in 2017"
TL;DR: In this paper, a simple autoregressive forecast model with weather prediction input is used to showcase the new concept, which is useful in both the production planning and the online operation of a modern district heating system, in particular in light of the low temperature operation, integration of renewable energy and close interaction with the electricity markets.
83 citations
TL;DR: In this article, a new configuration of compressed air energy storage technology aiming at cogeneration of electricity, heat and cooling is proposed, which may be very advantageous for locations with high penetration of renewable energy in the electricity grid as well as high heating and cooling demands.
65 citations
TL;DR: In this paper, a new configuration of a bifunctional solar assisted absorption chiller is proposed by which the heating demand of the chiller was efficiently supplied during summertime when there was not enough demand to take advantage of the high temperature discharge water of the chillers.
63 citations
TL;DR: In this article, a novel and efficient energy storage system capable of providing both heat and electricity is designed and analyzed, which is a smart combination of a thermal storage system and a gas turbine cycle without any combustion chamber.
42 citations
TL;DR: In this paper, thermal energy storage (TES) was used as a medium for storing power in an energy storage system, and a detailed energy, exergy and economic performance comparison between the three systems is accomplished, and the positive and negative features of each of them are addressed.
41 citations
TL;DR: In this paper, a novel energy storage system that produces both electricity and heat at high efficiencies and takes advantage of a high temperature hot rock cavern thermal energy storage was recently introduced and designed.
40 citations
TL;DR: In this article, the potential of unglazed building-integrated combined photovoltaic thermal solar collectors (BiPVT) for electricity production and domestic hot water heating application for multi-family apartment buildings was evaluated.
39 citations
TL;DR: In this paper, the authors introduced three classes of decision rules to help production planners perform economically optimal summer shutdown: a fixed date rule, a heat load based rule and a load-based rule augmented with weather forecasts.
9 citations
01 Jan 2017
TL;DR: In this article, the authors provided quantitative estimates for the benefits and costs of an intercontinental HVDC grid connecting a number of highly populated super regions in the Northern Hemisphere, and compared the economical benefits to the additional cost of intercontinental transmission lines.
Abstract: A global electricity grid may offer a number of advantages in a future highly renewable energy system dominated by wind and solar power. In this paper, we provide quantitative estimates for the benefits and costs of an intercontinental HVDC grid connecting a number of highly populated super regions in the Northern Hemisphere. The modeling is based on hourly time series of wind and solar power generation calculated from high-resolution global weather data using the Global Renewable Energy Atlas. Taking a European point of view, we find that the annual need for backup energy can be reduced from 18 to 10 % of the load by connecting to North Africa, the Middle East and Russia. A further reduction to 7 % is found for a grid spanning the whole Northern Hemisphere at the expense of substantial increase in transmission capacities. Comparing the economical benefits to the additional cost of intercontinental transmission lines, we estimate that connecting Europe to its geographically nearest neighbors may reduce the total cost of electricity. Longer distance connections to North America or Asia, on the other hand, would require transmission costs to fall to 15–20 % of current levels.
6 citations